WIP: Implementing the r_<FOO> files

.vscode/launch.json

@@ -16,7 +16,7 @@
                 }
             },
             "args": [
-                "./WADS/DOOM.WAD", "-dev", "-nomonsters", "-skill", "3"
+                "./WADS/DOOM.WAD", "-dev", "-nomonsters", "-skill", "3", "-config", "DEFAULT.CFG"
             ],
             "cwd": "${workspaceFolder}"
         },

Cargo.toml

@@ -3,4 +3,8 @@ name = "RustyDoom"
 version = "0.1.0"
 edition = "2024"
 
+[features]
+default = []
+french = []
+
 [dependencies]

DEFAULT.CFG

@@ -0,0 +1,46 @@
+mouse_sensitivity		5
+sfx_volume		8
+music_volume		8
+show_messages		1
+key_right		77
+key_left		75
+key_up		72
+key_down		80
+key_strafeleft		51
+key_straferight		52
+key_fire		29
+key_use		57
+key_strafe		56
+key_speed		54
+use_mouse		1
+mouseb_fire		0
+mouseb_strafe		1
+mouseb_forward		2
+use_joystick		0
+joyb_fire		0
+joyb_strafe		1
+joyb_use		3
+joyb_speed		2
+screenblocks		9
+detaillevel		0
+showmessages		1
+comport		1
+snd_channels		8
+snd_musicdevice		4
+snd_sfxdevice		3
+snd_sbport		544
+snd_sbirq		7
+snd_sbdma		1
+snd_mport		-1
+usegamma		0
+chatmacro0		"no macro"
+chatmacro1		"no macro"
+chatmacro2		"no macro"
+chatmacro3		"no macro"
+chatmacro4		"no macro"
+chatmacro5		"no macro"
+chatmacro6		"no macro"
+chatmacro7		"no macro"
+chatmacro8		"no macro"
+chatmacro9		"no macro"
+		0

README.md

@@ -1,5 +1,12 @@
 # RustyDoom
 
-A rust version of the original Doom.
+A Rust version of the original DOOM base on the offically released source code found at [https://github.com/id-software/doom](https://github.com/id-software/doom)
 
-This is more of a learning exercise than something good!
+This is more of a learning exercise than something good! For example, the original `z_zone.c` and `z_zone.h` will be more "Rust-like" compared to the original version.
+
+This repository will only contain the SHAREWARE verison of the original DOOM1, but will be able to run both IWAD and PWADS.
+
+This repository will be done in two parts before a "release"
+  
+  1. An initial port keeping as close to the original C code as possible, which some minor modifications where it is clear on how to convert the code to Rust
+  2. Rust-ify any (hopefully all) parts of the code, that is removing `unsafe` and other such things. This will also include breaking down some of the `uber` sized funtions of the original source into more managable bits

src/d_main/mod.rs

@@ -8,8 +8,13 @@ use crate::m_argv;
 use crate::m_argv::M_CheckParm;
 use crate::m_argv::M_GetOptionalArgumentValueByArgument;
 use crate::m_argv::PARM_NOT_FOUND;
+use crate::m_menu::M_Init;
+use crate::m_misc::M_LoadDefaults;
 
+use crate::renderer::R_Init;
+use crate::v_video::V_Init;
 use crate::w_wad::{W_CheckNumForName, W_InitMultipleFiles};
+use crate::z_zone::Z_Init;
 
 use crate::doomdef::{
     VERSION,
@@ -399,18 +404,16 @@ pub fn D_DoomMain() {
         }
     }
 
-    // TODO: Implement subsytem inits
+    
-    /*
     println!("V_Init: allocate screens.");
     V_Init();
 
-    println!("M_LoadDefaults: Load system defaults.")
+    println!("M_LoadDefaults: Load system defaults.");
     M_LoadDefaults();
 
     println!("Z_init: Init zone memory allocation daemon.");
     Z_Init();
 
-     */
     println!("W_Init: Init WADfiles");
     W_InitMultipleFiles(DOOMGLOBALS::with_ref(|g| g.wadfiles.clone()));  // we are loading so how cares about a borrow
 
@@ -465,14 +468,15 @@ pub fn D_DoomMain() {
         }
     }
     
-    // TODO: Implement other inits
-    /*
     println!("M_Init: Init miscellaneous info.");
     M_Init();
 
-    println!("R_Init: Init DOOM refresh daemon - ")
+    println!("R_Init: Init DOOM refresh daemon - ");
     R_Init();
 
+    // TODO: Implement other inits
+    /*
+
     println!("P_Init: Init Playloop state.");
     P_Init();
 

src/d_strings/d_english/mod.rs

@@ -0,0 +1,638 @@
+/// English Language string constants
+
+//
+// D_Main
+//
+pub const  D_DEVSTR: &'static str	= "Development mode ON.\n";
+pub const  D_CDROM: &'static str = "CD-ROM Version: default.cfg from c:\\doomdata\n";
+
+//
+//	M_Menu
+//
+pub const  PRESSKEY: &'static str =  "press a key.";
+pub const  PRESSYN: &'static str = 	"press y or n.";
+pub const  QUITMSG: &'static str = "are you sure you want to\nquit this great game?";
+pub const  LOADNET: &'static str = concat!("you can't do load while in a net game!\n\n", "press a key.");
+pub const  QLOADNET: &'static str = concat!("you can't quickload during a netgame!\n\n", "press a key.");
+pub const  QSAVESPOT: &'static str = concat!("you haven't picked a quicksave slot yet!\n\n", "press a key.");
+pub const  SAVEDEAD: &'static str =  concat!("you can't save if you aren't playing!\n\n", "press a key.");
+pub const  QSPROMPT: &'static str = concat!("quicksave over your game named\n\n'%s'?\n\n", "press y or n.");
+pub const  QLPROMPT: &'static str = concat!("do you want to quickload the game named\n\n'%s'?\n\n", "press y or n.");
+
+pub const  NEWGAME: &'static str = concat!("you can't start a new game\n", "while in a network game.\n\n", "press a key.");
+
+pub const  NIGHTMARE: &'static str = concat!("are you sure? this skill level\n","isn't even remotely fair.\n\n", "press y or n.");
+
+pub const  SWSTRING: &'static str = concat!("this is the shareware version of doom.\n\n", "you need to order the entire trilogy.\n\n", "press a key.");
+
+pub const  MSGOFF: &'static str = "Messages OFF";
+pub const  MSGON: &'static str = "Messages ON";
+pub const  NETEND: &'static str = concat!("you can't end a netgame!\n\n", "press a key.");
+pub const  ENDGAME: &'static str = concat!("are you sure you want to end the game?\n\n", "press y or n.");
+
+pub const  DOSY: &'static str = "(press y to quit)";
+
+pub const  DETAILHI: &'static str = "High detail";
+pub const  DETAILLO: &'static str = "Low detail";
+pub const  GAMMALVL0: &'static str = "Gamma correction OFF";
+pub const  GAMMALVL1: &'static str = "Gamma correction level 1";
+pub const  GAMMALVL2: &'static str = "Gamma correction level 2";
+pub const  GAMMALVL3: &'static str = "Gamma correction level 3";
+pub const  GAMMALVL4: &'static str = "Gamma correction level 4";
+pub const  EMPTYSTRING: &'static str = "empty slot";
+
+//
+//	P_inter.C
+//
+pub const  GOTARMOR: &'static str = "Picked up the armor.";
+pub const  GOTMEGA: &'static str = "Picked up the MegaArmor!";
+pub const  GOTHTHBONUS: &'static str = "Picked up a health bonus.";
+pub const  GOTARMBONUS: &'static str = "Picked up an armor bonus.";
+pub const  GOTSTIM: &'static str = "Picked up a stimpack.";
+pub const  GOTMEDINEED: &'static str = "Picked up a medikit that you REALLY need!";
+pub const  GOTMEDIKIT: &'static str = "Picked up a medikit.";
+pub const  GOTSUPER: &'static str = "Supercharge!";
+
+pub const  GOTBLUECARD: &'static str = "Picked up a blue keycard.";
+pub const  GOTYELWCARD: &'static str = "Picked up a yellow keycard.";
+pub const  GOTREDCARD: &'static str = "Picked up a red keycard.";
+pub const  GOTBLUESKUL: &'static str = "Picked up a blue skull key.";
+pub const  GOTYELWSKUL: &'static str = "Picked up a yellow skull key.";
+pub const  GOTREDSKULL: &'static str = "Picked up a red skull key.";
+
+pub const  GOTINVUL: &'static str = "Invulnerability!";
+pub const  GOTBERSERK: &'static str = "Berserk!";
+pub const  GOTINVIS: &'static str = "Partial Invisibility";
+pub const  GOTSUIT: &'static str = "Radiation Shielding Suit";
+pub const  GOTMAP: &'static str = "Computer Area Map";
+pub const  GOTVISOR: &'static str = "Light Amplification Visor";
+pub const  GOTMSPHERE: &'static str = "MegaSphere!";
+
+pub const  GOTCLIP: &'static str = "Picked up a clip.";
+pub const  GOTCLIPBOX: &'static str = "Picked up a box of bullets.";
+pub const  GOTROCKET: &'static str = "Picked up a rocket.";
+pub const  GOTROCKBOX: &'static str = "Picked up a box of rockets.";
+pub const  GOTCELL: &'static str = "Picked up an energy cell.";
+pub const  GOTCELLBOX: &'static str = "Picked up an energy cell pack.";
+pub const  GOTSHELLS: &'static str = "Picked up 4 shotgun shells.";
+pub const  GOTSHELLBOX: &'static str = "Picked up a box of shotgun shells.";
+pub const  GOTBACKPACK: &'static str = "Picked up a backpack full of ammo!";
+
+pub const  GOTBFG9000: &'static str = "You got the BFG9000!  Oh, yes.";
+pub const  GOTCHAINGUN: &'static str = "You got the chaingun!";
+pub const  GOTCHAINSAW: &'static str = "A chainsaw!  Find some meat!";
+pub const  GOTLAUNCHER: &'static str = "You got the rocket launcher!";
+pub const  GOTPLASMA: &'static str = "You got the plasma gun!";
+pub const  GOTSHOTGUN: &'static str = "You got the shotgun!";
+pub const  GOTSHOTGUN2: &'static str = "You got the super shotgun!";
+
+//
+// P_Doors.C
+//
+pub const  PD_BLUEO: &'static str = "You need a blue key to activate this object";
+pub const  PD_REDO: &'static str = "You need a red key to activate this object";
+pub const  PD_YELLOWO: &'static str = "You need a yellow key to activate this object";
+pub const  PD_BLUEK: &'static str = "You need a blue key to open this door";
+pub const  PD_REDK: &'static str = "You need a red key to open this door";
+pub const  PD_YELLOWK: &'static str = "You need a yellow key to open this door";
+
+//
+//	G_game.C
+//
+pub const  GGSAVED: &'static str = "game saved.";
+
+//
+//	HU_stuff.C
+//
+pub const  HUSTR_MSGU: &'static str = "[Message unsent]";
+
+pub const  HUSTR_E1M1: &'static str = "E1M1: Hangar";
+pub const  HUSTR_E1M2: &'static str = "E1M2: Nuclear Plant";
+pub const  HUSTR_E1M3: &'static str = "E1M3: Toxin Refinery";
+pub const  HUSTR_E1M4: &'static str = "E1M4: Command Control";
+pub const  HUSTR_E1M5: &'static str = "E1M5: Phobos Lab";
+pub const  HUSTR_E1M6: &'static str = "E1M6: Central Processing";
+pub const  HUSTR_E1M7: &'static str = "E1M7: Computer Station";
+pub const  HUSTR_E1M8: &'static str = "E1M8: Phobos Anomaly";
+pub const  HUSTR_E1M9: &'static str = "E1M9: Military Base";
+
+pub const  HUSTR_E2M1: &'static str = "E2M1: Deimos Anomaly";
+pub const  HUSTR_E2M2: &'static str = "E2M2: Containment Area";
+pub const  HUSTR_E2M3: &'static str = "E2M3: Refinery";
+pub const  HUSTR_E2M4: &'static str = "E2M4: Deimos Lab";
+pub const  HUSTR_E2M5: &'static str = "E2M5: Command Center";
+pub const  HUSTR_E2M6: &'static str = "E2M6: Halls of the Damned";
+pub const  HUSTR_E2M7: &'static str = "E2M7: Spawning Vats";
+pub const  HUSTR_E2M8: &'static str = "E2M8: Tower of Babel";
+pub const  HUSTR_E2M9: &'static str = "E2M9: Fortress of Mystery";
+
+pub const  HUSTR_E3M1: &'static str = "E3M1: Hell Keep";
+pub const  HUSTR_E3M2: &'static str = "E3M2: Slough of Despair";
+pub const  HUSTR_E3M3: &'static str = "E3M3: Pandemonium";
+pub const  HUSTR_E3M4: &'static str = "E3M4: House of Pain";
+pub const  HUSTR_E3M5: &'static str = "E3M5: Unholy Cathedral";
+pub const  HUSTR_E3M6: &'static str = "E3M6: Mt. Erebus";
+pub const  HUSTR_E3M7: &'static str = "E3M7: Limbo";
+pub const  HUSTR_E3M8: &'static str = "E3M8: Dis";
+pub const  HUSTR_E3M9: &'static str = "E3M9: Warrens";
+
+pub const  HUSTR_E4M1: &'static str = "E4M1: Hell Beneath";
+pub const  HUSTR_E4M2: &'static str = "E4M2: Perfect Hatred";
+pub const  HUSTR_E4M3: &'static str = "E4M3: Sever The Wicked";
+pub const  HUSTR_E4M4: &'static str = "E4M4: Unruly Evil";
+pub const  HUSTR_E4M5: &'static str = "E4M5: They Will Repent";
+pub const  HUSTR_E4M6: &'static str = "E4M6: Against Thee Wickedly";
+pub const  HUSTR_E4M7: &'static str = "E4M7: And Hell Followed";
+pub const  HUSTR_E4M8: &'static str = "E4M8: Unto The Cruel";
+pub const  HUSTR_E4M9: &'static str = "E4M9: Fear";
+
+pub const  HUSTR_1: &'static str = "level 1: entryway";
+pub const  HUSTR_2: &'static str = "level 2: underhalls";
+pub const  HUSTR_3: &'static str = "level 3: the gantlet";
+pub const  HUSTR_4: &'static str = "level 4: the focus";
+pub const  HUSTR_5: &'static str = "level 5: the waste tunnels";
+pub const  HUSTR_6: &'static str = "level 6: the crusher";
+pub const  HUSTR_7: &'static str = "level 7: dead simple";
+pub const  HUSTR_8: &'static str = "level 8: tricks and traps";
+pub const  HUSTR_9: &'static str = "level 9: the pit";
+pub const  HUSTR_10: &'static str = "level 10: refueling base";
+pub const  HUSTR_11: &'static str = "level 11: 'o' of destruction!";
+
+pub const  HUSTR_12: &'static str = "level 12: the factory";
+pub const  HUSTR_13: &'static str = "level 13: downtown";
+pub const  HUSTR_14: &'static str = "level 14: the inmost dens";
+pub const  HUSTR_15: &'static str = "level 15: industrial zone";
+pub const  HUSTR_16: &'static str = "level 16: suburbs";
+pub const  HUSTR_17: &'static str = "level 17: tenements";
+pub const  HUSTR_18: &'static str = "level 18: the courtyard";
+pub const  HUSTR_19: &'static str = "level 19: the citadel";
+pub const  HUSTR_20: &'static str = "level 20: gotcha!";
+
+pub const  HUSTR_21: &'static str = "level 21: nirvana";
+pub const  HUSTR_22: &'static str = "level 22: the catacombs";
+pub const  HUSTR_23: &'static str = "level 23: barrels o' fun";
+pub const  HUSTR_24: &'static str = "level 24: the chasm";
+pub const  HUSTR_25: &'static str = "level 25: bloodfalls";
+pub const  HUSTR_26: &'static str = "level 26: the abandoned mines";
+pub const  HUSTR_27: &'static str = "level 27: monster condo";
+pub const  HUSTR_28: &'static str = "level 28: the spirit world";
+pub const  HUSTR_29: &'static str = "level 29: the living end";
+pub const  HUSTR_30: &'static str = "level 30: icon of sin";
+
+pub const  HUSTR_31: &'static str = "level 31: wolfenstein";
+pub const  HUSTR_32: &'static str = "level 32: grosse";
+
+pub const  PHUSTR_1: &'static str ="level 1: congo";
+pub const  PHUSTR_2: &'static str ="level 2: well of souls";
+pub const  PHUSTR_3: &'static str ="level 3: aztec";
+pub const  PHUSTR_4: &'static str ="level 4: caged";
+pub const  PHUSTR_5: &'static str ="level 5: ghost town";
+pub const  PHUSTR_6: &'static str ="level 6: baron's lair";
+pub const  PHUSTR_7: &'static str ="level 7: caughtyard";
+pub const  PHUSTR_8: &'static str ="level 8: realm";
+pub const  PHUSTR_9: &'static str ="level 9: abattoire";
+pub const  PHUSTR_10: &'static str = "level 10: onslaught";
+pub const  PHUSTR_11: &'static str = "level 11: hunted";
+
+pub const  PHUSTR_12: &'static str = "level 12: speed";
+pub const  PHUSTR_13: &'static str = "level 13: the crypt";
+pub const  PHUSTR_14: &'static str = "level 14: genesis";
+pub const  PHUSTR_15: &'static str = "level 15: the twilight";
+pub const  PHUSTR_16: &'static str = "level 16: the omen";
+pub const  PHUSTR_17: &'static str = "level 17: compound";
+pub const  PHUSTR_18: &'static str = "level 18: neurosphere";
+pub const  PHUSTR_19: &'static str = "level 19: nme";
+pub const  PHUSTR_20: &'static str = "level 20: the death domain";
+
+pub const  PHUSTR_21: &'static str = "level 21: slayer";
+pub const  PHUSTR_22: &'static str = "level 22: impossible mission";
+pub const  PHUSTR_23: &'static str = "level 23: tombstone";
+pub const  PHUSTR_24: &'static str = "level 24: the final frontier";
+pub const  PHUSTR_25: &'static str = "level 25: the temple of darkness";
+pub const  PHUSTR_26: &'static str = "level 26: bunker";
+pub const  PHUSTR_27: &'static str = "level 27: anti-christ";
+pub const  PHUSTR_28: &'static str = "level 28: the sewers";
+pub const  PHUSTR_29: &'static str = "level 29: odyssey of noises";
+pub const  PHUSTR_30: &'static str = "level 30: the gateway of hell";
+
+pub const  PHUSTR_31: &'static str = "level 31: cyberden";
+pub const  PHUSTR_32: &'static str = "level 32: go 2 it";
+
+pub const  THUSTR_1: &'static str = "level 1: system control";
+pub const  THUSTR_2: &'static str = "level 2: human bbq";
+pub const  THUSTR_3: &'static str = "level 3: power control";
+pub const  THUSTR_4: &'static str = "level 4: wormhole";
+pub const  THUSTR_5: &'static str = "level 5: hanger";
+pub const  THUSTR_6: &'static str = "level 6: open season";
+pub const  THUSTR_7: &'static str = "level 7: prison";
+pub const  THUSTR_8: &'static str = "level 8: metal";
+pub const  THUSTR_9: &'static str = "level 9: stronghold";
+pub const  THUSTR_10: &'static str = "level 10: redemption";
+pub const  THUSTR_11: &'static str = "level 11: storage facility";
+
+pub const  THUSTR_12: &'static str = "level 12: crater";
+pub const  THUSTR_13: &'static str = "level 13: nukage processing";
+pub const  THUSTR_14: &'static str = "level 14: steel works";
+pub const  THUSTR_15: &'static str = "level 15: dead zone";
+pub const  THUSTR_16: &'static str = "level 16: deepest reaches";
+pub const  THUSTR_17: &'static str = "level 17: processing area";
+pub const  THUSTR_18: &'static str = "level 18: mill";
+pub const  THUSTR_19: &'static str = "level 19: shipping/respawning";
+pub const  THUSTR_20: &'static str = "level 20: central processing";
+
+pub const  THUSTR_21: &'static str = "level 21: administration center";
+pub const  THUSTR_22: &'static str = "level 22: habitat";
+pub const  THUSTR_23: &'static str = "level 23: lunar mining project";
+pub const  THUSTR_24: &'static str = "level 24: quarry";
+pub const  THUSTR_25: &'static str = "level 25: baron's den";
+pub const  THUSTR_26: &'static str = "level 26: ballistyx";
+pub const  THUSTR_27: &'static str = "level 27: mount pain";
+pub const  THUSTR_28: &'static str = "level 28: heck";
+pub const  THUSTR_29: &'static str = "level 29: river styx";
+pub const  THUSTR_30: &'static str = "level 30: last call";
+
+pub const  THUSTR_31: &'static str ="level 31: pharaoh";
+pub const  THUSTR_32: &'static str ="level 32: caribbean";
+
+pub const  HUSTR_CHATMACRO1: &'static str = "I'm ready to kick butt!";
+pub const  HUSTR_CHATMACRO2: &'static str = "I'm OK.";
+pub const  HUSTR_CHATMACRO3: &'static str = "I'm not looking too good!";
+pub const  HUSTR_CHATMACRO4: &'static str = "Help!";
+pub const  HUSTR_CHATMACRO5: &'static str = "You suck!";
+pub const  HUSTR_CHATMACRO6: &'static str = "Next time, scumbag...";
+pub const  HUSTR_CHATMACRO7: &'static str = "Come here!";
+pub const  HUSTR_CHATMACRO8: &'static str = "I'll take care of it.";
+pub const  HUSTR_CHATMACRO9: &'static str = "Yes";
+pub const  HUSTR_CHATMACRO0: &'static str = "No";
+
+pub const  HUSTR_TALKTOSELF1: &'static str = "You mumble to yourself";
+pub const  HUSTR_TALKTOSELF2: &'static str = "Who's there?";
+pub const  HUSTR_TALKTOSELF3: &'static str = "You scare yourself";
+pub const  HUSTR_TALKTOSELF4: &'static str = "You start to rave";
+pub const  HUSTR_TALKTOSELF5: &'static str = "You've lost it...";
+
+pub const  HUSTR_MESSAGESENT: &'static str = "[Message Sent]";
+
+// The following should NOT be changed unless it seems
+// just AWFULLY necessary
+
+pub const  HUSTR_PLRGREEN: &'static str = "Green: ";
+pub const  HUSTR_PLRINDIGO: &'static str = "Indigo: ";
+pub const  HUSTR_PLRBROWN: &'static str = "Brown: ";
+pub const  HUSTR_PLRRED: &'static str = "Red: ";
+
+pub const  HUSTR_KEYGREEN: &'static str = "g";
+pub const  HUSTR_KEYINDIGO: &'static str = "i";
+pub const  HUSTR_KEYBROWN: &'static str = "b";
+pub const  HUSTR_KEYRED: &'static str = "r";
+
+//
+//	AM_map.C
+//
+
+pub const  AMSTR_FOLLOWON: &'static str = "Follow Mode ON";
+pub const  AMSTR_FOLLOWOFF: &'static str = "Follow Mode OFF";
+
+pub const  AMSTR_GRIDON: &'static str = "Grid ON";
+pub const  AMSTR_GRIDOFF: &'static str = "Grid OFF";
+
+pub const  AMSTR_MARKEDSPOT: &'static str = "Marked Spot";
+pub const  AMSTR_MARKSCLEARED: &'static str = "All Marks Cleared";
+
+//
+//	ST_stuff.C
+//
+
+pub const  STSTR_MUS: &'static str = "Music Change";
+pub const  STSTR_NOMUS: &'static str = "IMPOSSIBLE SELECTION";
+pub const  STSTR_DQDON: &'static str = "Degreelessness Mode On";
+pub const  STSTR_DQDOFF: &'static str = "Degreelessness Mode Off";
+
+pub const  STSTR_KFAADDED: &'static str = "Very Happy Ammo Added";
+pub const  STSTR_FAADDED: &'static str = "Ammo (no keys) Added";
+
+pub const  STSTR_NCON: &'static str = "No Clipping Mode ON";
+pub const  STSTR_NCOFF: &'static str = "No Clipping Mode OFF";
+
+pub const  STSTR_BEHOLD: &'static str = "inVuln, Str, Inviso, Rad, Allmap, or Lite-amp";
+pub const  STSTR_BEHOLDX: &'static str = "Power-up Toggled";
+
+pub const  STSTR_CHOPPERS: &'static str = "... doesn't suck - GM";
+pub const  STSTR_CLEV: &'static str = 	"Changing Level...";
+
+//
+//	F_Finale.C
+//
+pub const  E1TEXT: &'static str = concat!("Once you beat the big badasses and\n",
+"clean out the moon base you're supposed\n",
+"to win, aren't you? Aren't you? Where's\n",
+"your fat reward and ticket home? What\n",
+"the hell is this? It's not supposed to\n",
+"end this way!\n",
+"\n" ,
+"It stinks like rotten meat, but looks\n",
+"like the lost Deimos base.  Looks like\n",
+"you're stuck on The Shores of Hell.\n",
+"The only way out is through.\n",
+"\n",
+"To continue the DOOM experience, play\n",
+"The Shores of Hell and its amazing\n",
+"sequel, Inferno!\n");
+
+
+pub const  E2TEXT: &'static str = concat!("You've done it! The hideous cyber-\n",
+"demon lord that ruled the lost Deimos\n",
+"moon base has been slain and you\n",
+"are triumphant! But ... where are\n",
+"you? You clamber to the edge of the\n",
+"moon and look down to see the awful\n",
+"truth.\n" ,
+"\n",
+"Deimos floats above Hell itself!\n",
+"You've never heard of anyone escaping\n",
+"from Hell, but you'll make the bastards\n",
+"sorry they ever heard of you! Quickly,\n",
+"you rappel down to  the surface of\n",
+"Hell.\n",
+"\n" ,
+"Now, it's on to the final chapter of\n",
+"DOOM! -- Inferno.");
+
+
+pub const  E3TEXT: &'static str = concat!("The loathsome spiderdemon that\n",
+"masterminded the invasion of the moon\n",
+"bases and caused so much death has had\n",
+"its ass kicked for all time.\n",
+"\n",
+"A hidden doorway opens and you enter.\n",
+"You've proven too tough for Hell to\n",
+"contain, and now Hell at last plays\n",
+"fair -- for you emerge from the door\n",
+"to see the green fields of Earth!\n",
+"Home at last.\n" ,
+"\n",
+"You wonder what's been happening on\n",
+"Earth while you were battling evil\n",
+"unleashed. It's good that no Hell-\n",
+"spawn could have come through that\n",
+"door with you ...");
+
+
+pub const  E4TEXT: &'static str = concat!("the spider mastermind must have sent forth\n",
+"its legions of hellspawn before your\n",
+"final confrontation with that terrible\n",
+"beast from hell.  but you stepped forward\n",
+"and brought forth eternal damnation and\n",
+"suffering upon the horde as a true hero\n",
+"would in the face of something so evil.\n",
+"\n",
+"besides, someone was gonna pay for what\n",
+"happened to daisy, your pet rabbit.\n",
+"\n",
+"but now, you see spread before you more\n",
+"potential pain and gibbitude as a nation\n",
+"of demons run amok among our cities.\n",
+"\n",
+"next stop, hell on earth!");
+
+
+// after level 6, put this:
+
+pub const  C1TEXT: &'static str = concat!("YOU HAVE ENTERED DEEPLY INTO THE INFESTED\n",
+"STARPORT. BUT SOMETHING IS WRONG. THE\n",
+"MONSTERS HAVE BROUGHT THEIR OWN REALITY\n",
+"WITH THEM, AND THE STARPORT'S TECHNOLOGY\n",
+"IS BEING SUBVERTED BY THEIR PRESENCE.\n",
+"\n",
+"AHEAD, YOU SEE AN OUTPOST OF HELL, A\n",
+"FORTIFIED ZONE. IF YOU CAN GET PAST IT,\n",
+"YOU CAN PENETRATE INTO THE HAUNTED HEART\n",
+"OF THE STARBASE AND FIND THE CONTROLLING\n",
+"SWITCH WHICH HOLDS EARTH'S POPULATION\n",
+"HOSTAGE.");
+
+// After level 11, put this:
+
+pub const  C2TEXT: &'static str = concat!("YOU HAVE WON! YOUR VICTORY HAS ENABLED\n",
+"HUMANKIND TO EVACUATE EARTH AND ESCAPE\n",
+"THE NIGHTMARE.  NOW YOU ARE THE ONLY\n",
+"HUMAN LEFT ON THE FACE OF THE PLANET.\n",
+"CANNIBAL MUTATIONS, CARNIVOROUS ALIENS,\n",
+"AND EVIL SPIRITS ARE YOUR ONLY NEIGHBORS.\n",
+"YOU SIT BACK AND WAIT FOR DEATH, CONTENT\n",
+"THAT YOU HAVE SAVED YOUR SPECIES.\n",
+"\n",
+"BUT THEN, EARTH CONTROL BEAMS DOWN A\n",
+"MESSAGE FROM SPACE: \"SENSORS HAVE LOCATED\n",
+"THE SOURCE OF THE ALIEN INVASION. IF YOU\n",
+"GO THERE, YOU MAY BE ABLE TO BLOCK THEIR\n",
+"ENTRY.  THE ALIEN BASE IS IN THE HEART OF\n",
+"YOUR OWN HOME CITY, NOT FAR FROM THE\n",
+"STARPORT.\" SLOWLY AND PAINFULLY YOU GET\n",
+"UP AND RETURN TO THE FRAY.");
+
+
+// After level 20, put this:
+
+pub const  C3TEXT: &'static str = concat!("YOU ARE AT THE CORRUPT HEART OF THE CITY,\n",
+"SURROUNDED BY THE CORPSES OF YOUR ENEMIES.\n",
+"YOU SEE NO WAY TO DESTROY THE CREATURES'\n",
+"ENTRYWAY ON THIS SIDE, SO YOU CLENCH YOUR\n",
+"TEETH AND PLUNGE THROUGH IT.\n",
+"\n",
+"THERE MUST BE A WAY TO CLOSE IT ON THE\n",
+"OTHER SIDE. WHAT DO YOU CARE IF YOU'VE\n",
+"GOT TO GO THROUGH HELL TO GET TO IT?");
+
+
+// After level 29, put this:
+
+pub const  C4TEXT: &'static str = concat!("THE HORRENDOUS VISAGE OF THE BIGGEST\n",
+"DEMON YOU'VE EVER SEEN CRUMBLES BEFORE\n",
+"YOU, AFTER YOU PUMP YOUR ROCKETS INTO\n",
+"HIS EXPOSED BRAIN. THE MONSTER SHRIVELS\n",
+"UP AND DIES, ITS THRASHING LIMBS\n",
+"DEVASTATING UNTOLD MILES OF HELL'S\n",
+"SURFACE.\n",
+"\n",
+"YOU'VE DONE IT. THE INVASION IS OVER.\n",
+"EARTH IS SAVED. HELL IS A WRECK. YOU\n",
+"WONDER WHERE BAD FOLKS WILL GO WHEN THEY\n",
+"DIE, NOW. WIPING THE SWEAT FROM YOUR\n",
+"FOREHEAD YOU BEGIN THE LONG TREK BACK\n",
+"HOME. REBUILDING EARTH OUGHT TO BE A\n",
+"LOT MORE FUN THAN RUINING IT WAS.\n");
+
+
+
+// Before level 31, put this:
+
+pub const  C5TEXT: &'static str = concat!("CONGRATULATIONS, YOU'VE FOUND THE SECRET\n",
+"LEVEL! LOOKS LIKE IT'S BEEN BUILT BY\n",
+"HUMANS, RATHER THAN DEMONS. YOU WONDER\n",
+"WHO THE INMATES OF THIS CORNER OF HELL\n",
+"WILL BE.");
+
+
+// Before level 32, put this:
+
+pub const  C6TEXT: &'static str = concat!("CONGRATULATIONS, YOU'VE FOUND THE\n",
+"SUPER SECRET LEVEL!  YOU'D BETTER\n",
+"BLAZE THROUGH THIS ONE!\n");
+
+
+// after map 06	
+
+pub const  P1TEXT: &'static str = concat!("You gloat over the steaming carcass of the\n",
+"Guardian.  With its death, you've wrested\n",
+"the Accelerator from the stinking claws\n",
+"of Hell.  You relax and glance around the\n",
+"room.  Damn!  There was supposed to be at\n",
+"least one working prototype, but you can't\n",
+"see it. The demons must have taken it.\n",
+"\n",
+"You must find the prototype, or all your\n",
+"struggles will have been wasted. Keep\n",
+"moving, keep fighting, keep killing.\n",
+"Oh yes, keep living, too.");
+
+
+// after map 11
+
+pub const  P2TEXT: &'static str = concat!("Even the deadly Arch-Vile labyrinth could\n",
+"not stop you, and you've gotten to the\n",
+"prototype Accelerator which is soon\n",
+"efficiently and permanently deactivated.\n",
+"\n",
+"You're good at that kind of thing.");
+
+
+// after map 20
+
+pub const  P3TEXT: &'static str = concat!("You've bashed and battered your way into\n",
+"the heart of the devil-hive.  Time for a\n",
+"Search-and-Destroy mission, aimed at the\n",
+"Gatekeeper, whose foul offspring is\n",
+"cascading to Earth.  Yeah, he's bad. But\n",
+"you know who's worse!\n",
+"\n",
+"Grinning evilly, you check your gear, and\n",
+"get ready to give the bastard a little Hell\n",
+"of your own making!");
+
+// after map 30
+
+pub const  P4TEXT: &'static str = concat!("The Gatekeeper's evil face is splattered\n",
+"all over the place.  As its tattered corpse\n",
+"collapses, an inverted Gate forms and\n",
+"sucks down the shards of the last\n",
+"prototype Accelerator, not to mention the\n",
+"few remaining demons.  You're done. Hell\n",
+"has gone back to pounding bad dead folks \n",
+"instead of good live ones.  Remember to\n",
+"tell your grandkids to put a rocket\n",
+"launcher in your coffin. If you go to Hell\n",
+"when you die, you'll need it for some\n",
+"final cleaning-up ...");
+
+// before map 31
+
+pub const  P5TEXT: &'static str = concat!("You've found the second-hardest level we\n",
+"got. Hope you have a saved game a level or\n",
+"two previous.  If not, be prepared to die\n",
+"aplenty. For master marines only.");
+
+// before map 32
+
+pub const  P6TEXT: &'static str = concat!("Betcha wondered just what WAS the hardest\n",
+"level we had ready for ya?  Now you know.\n",
+"No one gets out alive.");
+
+
+pub const  T1TEXT: &'static str = concat!("You've fought your way out of the infested\n",
+"experimental labs.   It seems that UAC has\n",
+"once again gulped it down.  With their\n",
+"high turnover, it must be hard for poor\n",
+"old UAC to buy corporate health insurance\n",
+"nowadays..\n",
+"\n",
+"Ahead lies the military complex, now\n",
+"swarming with diseased horrors hot to get\n",
+"their teeth into you. With luck, the\n",
+"complex still has some warlike ordnance\n",
+"laying around.");
+
+
+pub const  T2TEXT: &'static str = concat!("You hear the grinding of heavy machinery\n",
+"ahead.  You sure hope they're not stamping\n",
+"out new hellspawn, but you're ready to\n",
+"ream out a whole herd if you have to.\n",
+"They might be planning a blood feast, but\n",
+"you feel about as mean as two thousand\n",
+"maniacs packed into one mad killer.\n",
+"\n",
+"You don't plan to go down easy.");
+
+
+pub const  T3TEXT: &'static str = concat!("The vista opening ahead looks real damn\n",
+"familiar. Smells familiar, too -- like\n",
+"fried excrement. You didn't like this\n",
+"place before, and you sure as hell ain't\n",
+"planning to like it now. The more you\n",
+"brood on it, the madder you get.\n",
+"Hefting your gun, an evil grin trickles\n",
+"onto your face. Time to take some names.");
+
+pub const  T4TEXT: &'static str = concat!("Suddenly, all is silent, from one horizon\n",
+"to the other. The agonizing echo of Hell\n",
+"fades away, the nightmare sky turns to\n",
+"blue, the heaps of monster corpses start \n",
+"to evaporate along with the evil stench \n",
+"that filled the air. Jeeze, maybe you've\n",
+"done it. Have you really won?\n",
+"\n",
+"Something rumbles in the distance.\n",
+"A blue light begins to glow inside the\n",
+"ruined skull of the demon-spitter.");
+
+
+pub const  T5TEXT: &'static str = concat!("What now? Looks totally different. Kind\n",
+"of like King Tut's condo. Well,\n",
+"whatever's here can't be any worse\n",
+"than usual. Can it?  Or maybe it's best\n",
+"to let sleeping gods lie..");
+
+
+pub const  T6TEXT: &'static str = concat!("Time for a vacation. You've burst the\n",
+"bowels of hell and by golly you're ready\n",
+"for a break. You mutter to yourself,\n",
+"Maybe someone else can kick Hell's ass\n",
+"next time around. Ahead lies a quiet town,\n",
+"with peaceful flowing water, quaint\n",
+"buildings, and presumably no Hellspawn.\n",
+"\n",
+"As you step off the transport, you hear\n",
+"the stomp of a cyberdemon's iron shoe.");
+
+
+
+//
+// Character cast strings F_FINALE.C
+//
+pub const  CC_ZOMBIE: &'static str = "ZOMBIEMAN";
+pub const  CC_SHOTGUN: &'static str = "SHOTGUN GUY";
+pub const  CC_HEAVY: &'static str = "HEAVY WEAPON DUDE";
+pub const  CC_IMP: &'static str = "IMP";
+pub const  CC_DEMON: &'static str = "DEMON";
+pub const  CC_LOST: &'static str = "LOST SOUL";
+pub const  CC_CACO: &'static str = "CACODEMON";
+pub const  CC_HELL: &'static str = "HELL KNIGHT";
+pub const  CC_BARON: &'static str = "BARON OF HELL";
+pub const  CC_ARACH: &'static str = "ARACHNOTRON";
+pub const  CC_PAIN: &'static str = "PAIN ELEMENTAL";
+pub const  CC_REVEN: &'static str = "REVENANT";
+pub const  CC_MANCU: &'static str = "MANCUBUS";
+pub const  CC_ARCH: &'static str = "ARCH-VILE";
+pub const  CC_SPIDER: &'static str = "THE SPIDER MASTERMIND";
+pub const  CC_CYBER: &'static str = "THE CYBERDEMON";
+pub const  CC_HERO: &'static str = "OUR HERO";

src/d_strings/french/mod.rs

@@ -0,0 +1,3 @@
+/// French Language string constants
+/// 
+/// NOT IMPLEMENTED "C'est injuste envers les Français !"

src/d_strings/mod.rs

@@ -0,0 +1,20 @@
+#[cfg(feature = "french")]
+mod d_french;
+
+#[cfg(not(feature = "french"))]
+mod d_english;
+
+#[cfg(feature = "french")]
+pub use d_french::*;
+
+#[cfg(not(feature = "french"))]
+pub use d_english::*;
+
+pub const  SAVEGAMENAME: &'static str = "doomsav";
+
+pub const DEVMPAS: &'static str = "devmaps";
+
+pub const DEVDATA: &'static str = "devdata";
+
+pub const NUM_QUITMESSAGES: i32 = 22;
+

src/doomdef/mod.rs

@@ -1,8 +1,38 @@
 use std::cell::RefCell;
 
+/// DOOM version
 pub const VERSION:i32 =  110;
-pub const D_DEVSTR: &str =	"Development mode ON.";
 
+/// BASE_WIDTH
+/// For resize of screen, at start of game.
+/// It will not work dynamically, see visplanes. TODO: Investigate what this means.
+pub const BASE_WIDTH: i32 = 320;
+
+/// Screen scale multiplier?
+/// Original source comment:
+/// It is educational but futile to change this
+///  scaling e.g. to 2. Drawing of status bar,
+///  menues etc. is tied to the scale implied
+///  by the graphics.
+pub const SCREEN_MUL: i32 =	1;
+
+/// Inverse of the aspect ratio
+pub const INV_ASPECT_RATIO: f32 = 0.625; // 0.75, ideally according to the original source
+
+/// SCREENWIDTH 
+/// = SCREEN_MUL*BASE_WIDTH //320
+pub const SCREENWIDTH: i32 = 320;
+
+/// SCREENHEIGHT
+/// (int)(SCREEN_MUL*BASE_WIDTH*INV_ASPECT_RATIO) //200
+pub const SCREENHEIGHT:i32 = 200;
+
+
+/// The maximum number of players, multiplayer/networking.
+pub const MAXPLAYERS: i32 = 4;
+
+/// The number of state updates (ticks) to be done per second
+pub const TICRATE: i32 = 35;
 
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub enum GameMode {

src/doomtype/mod.rs

@@ -0,0 +1,10 @@
+pub const MAXCHAR: i8 = i8::MAX;
+pub const MAXSHORT: i16 = i16::MAX;
+pub const MAXINT: i32 = i32::MAX;
+pub const MAXLONG: i32 = i32::MAX;
+
+// Minimum values
+pub const MINCHAR: i8 = i8::MIN;
+pub const MINSHORT: i16 = i16::MIN;
+pub const MININT: i32 = i32::MIN;
+pub const MINLONG: i32 = i32::MIN;

src/hu_stuff/mod.rs

@@ -0,0 +1,99 @@
+/// Heads up display stuff
+use std::sync::OnceLock;
+
+use crate::doomdef::TICRATE;
+use crate::d_strings;
+
+/// The first font characters
+pub const HU_FONTSTART: char = '!';
+
+/// The last font characters 
+pub const HU_FONTEND: char = '_';
+
+/// Number of glyphs in the font
+pub const HU_FONTSIZE: u8 = (HU_FONTEND as u8 - HU_FONTSTART as u8) + 1;
+
+pub const HU_BROADCAST: i32 = 5;
+
+// pub const HU_MSGREFRESH	 = KEY_ENTER // Comes from doomdef.h TODO: implement more doomdef!
+
+pub const HU_MSGX: i32 = 0;
+
+pub const HU_MSGY: i32 = 0;
+
+/// The width of a message in characters
+pub const HU_MSGWIDTH: i32 = 64;
+
+/// The height of a message in lines
+pub const HU_MSGHEIGHT: i32 = 1; 
+
+/// The time a message should be displayed for before it disapears
+pub const HU_MSGTIMEOUT: i32 = 4 * TICRATE;
+
+
+/// Constant string arrays
+static CHAT_MACROS_LOCK: OnceLock<[String; 10]> = OnceLock::new();
+
+pub fn get_chat_macro_ptr(index: usize) -> *mut String {
+    let array_ref = CHAT_MACROS_LOCK.get_or_init(|| [
+        d_strings::HUSTR_CHATMACRO0.to_string(),
+        d_strings::HUSTR_CHATMACRO1.to_string(),
+        d_strings::HUSTR_CHATMACRO2.to_string(),
+        d_strings::HUSTR_CHATMACRO3.to_string(),
+        d_strings::HUSTR_CHATMACRO4.to_string(),
+        d_strings::HUSTR_CHATMACRO5.to_string(),
+        d_strings::HUSTR_CHATMACRO6.to_string(),
+        d_strings::HUSTR_CHATMACRO7.to_string(),
+        d_strings::HUSTR_CHATMACRO8.to_string(),
+        d_strings::HUSTR_CHATMACRO9.to_string(),
+    ]);
+
+    // Cast the immutable reference from the lock to a raw mutable pointer
+    unsafe {
+        let array_ptr = array_ref.as_ptr() as *mut String;
+        array_ptr.add(index)
+    }
+}
+
+
+
+// HUD text stuff
+
+#[allow(non_snake_case)]
+pub fn HU_INIT() {
+
+}
+
+
+#[allow(non_snake_case)]
+pub fn HU_Start() {
+
+}
+
+/*
+// TODO: Implement d_event.h/c
+#[allow(non_snake_case)]
+pub fn HU_Responder(event_t* ev) {
+}
+*/
+
+#[allow(non_snake_case)]
+pub fn HU_Ticker() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn HU_Ticket() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn HU_dequeueChatChar() /*-> char */ {
+
+}
+
+#[allow(non_snake_case)]
+pub fn HU_Erase() {
+
+}
+

src/m_menu/mod.rs

@@ -0,0 +1,323 @@
+// Menu Widget stuff i.e episode selection etc.
+
+// TODO: Implement d_event.handle
+
+use std::ptr::addr_of_mut;
+
+use crate::doomdef::{DOOMGLOBALS, GameMode};
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+#[allow(non_snake_case)]
+struct menuitem_t {
+    status: i32,
+    name: [u8; 10],
+    routine: Option<fn(choice: i32)>,
+    
+    // hotkey in menu
+    alpha_key: u8,
+}
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+#[allow(non_snake_case)]
+struct menu_t {
+    
+    /// Number of items in the menu
+    numitems: i32,
+
+    /// Pointer to the previous menu
+    prevMenu: *mut menu_t,
+
+    /// The menu items
+    menuItems: *mut menuitem_t,
+
+    /// draw routine
+    routine: Option<fn()>,
+
+    /// X of the menu
+    x: i32,
+
+    /// y of the menu
+    y: i32,
+
+    /// The last item the user was on in the menu
+    lastOn: i32
+}
+
+/// TEMP function
+#[allow(non_snake_case)]
+fn VoidRoutine() {
+
+}
+
+#[allow(non_snake_case)]
+fn VoidRoutineWithChoice(choice: i32) {
+    let _ = choice;
+}
+
+
+// Main Menu
+#[allow(non_snake_case)]
+mod MainMenu {
+    use super::*;
+
+    /// Enumeration of the main menu options
+    #[allow(non_camel_case_types)]
+    pub(super) enum main_e {
+        newgame = 0,
+        options,
+        loadgame,
+        savegame,
+        readthis,
+        quitdoom,
+        main_end
+    }
+
+    /// Main Menu items
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut MainMenu: [menuitem_t; 6] = [
+        menuitem_t {
+            status: 1,
+            name: *b"M_NGAME\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'n'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_OPTION\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'o'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_LOADG\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'l'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_SAVEG\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b's'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_RDTHIS\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'r'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_QUITG\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'q'
+        }    
+    ];
+
+    /// Default MainMenu
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut MainDef: menu_t = menu_t {
+        numitems: main_e::main_end as i32,
+        prevMenu: std::ptr::null_mut(),
+        menuItems: &raw mut MainMenu as *mut menuitem_t, // Use &raw mut instead of .as_mut_ptr() to avoid illegal static mut references (Feels dirty)
+        routine: Some(VoidRoutine),
+        x: 97,
+        y: 64,
+        lastOn: 0,
+    };
+}
+
+// New Game menu
+#[allow(non_snake_case)]
+mod NewGameMenu {
+    use super::*;
+
+    /// Enumeration of the New Game options
+    #[allow(non_camel_case_types)]
+    pub(super) enum newgame_e {
+        killthings,
+        toorough,
+        hurtme,
+        violence,
+        nightmare,
+        newg_end
+    }
+
+    /// New Game Menu items
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut NewGameMenu: [menuitem_t; 5] = [
+        menuitem_t {
+            status: 1,
+            name: *b"M_JKILL\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'i'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_ROUGH\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'h'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_HURT\0\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'h'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_ULTRA\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'u'
+        },
+        menuitem_t {
+            status: 1,
+            name: *b"M_NMARE\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'n'
+        }
+    ];
+
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut NewDef: menu_t = menu_t {
+        numitems: newgame_e::newg_end as i32,
+        prevMenu: std::ptr::null_mut(), // TODO: Add EpiDef
+        menuItems: &raw mut NewGameMenu as *mut menuitem_t, // Use &raw mut instead of .as_mut_ptr() to avoid illegal static mut references (Feels dirty)
+        routine: Some(VoidRoutine),
+        x: 48,
+        y: 63,
+        lastOn: newgame_e::hurtme as i32,
+    };
+}
+
+// TODO: add OptionsMenu
+#[allow(non_snake_case)]
+mod ReadThis1 {
+    use super::*;
+
+    /// Enumeration of the main menu options
+    #[allow(non_camel_case_types)]
+    pub(super) enum read_e {
+        rdthisempty1 = 0,
+        read1_end,
+    }
+
+    /// Read1 Menu items
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut ReadMenu1: [menuitem_t; 1] = [
+        menuitem_t {
+            status: 1,
+            name: *b"\0\0\0\0\0\0\0\0\0\0",
+            routine: Some(VoidRoutineWithChoice),
+            alpha_key: b'0'
+        }
+    ];
+
+    /// Default MainMenu
+    #[allow(non_upper_case_globals)]
+    pub(super) static mut Read1Def: menu_t = menu_t {
+        numitems: read_e::rdthisempty1 as i32,
+        prevMenu: addr_of_mut!(MainMenu::MainDef),
+        menuItems: &raw mut ReadMenu1 as *mut menuitem_t, // Use &raw mut instead of .as_mut_ptr() to avoid illegal static mut references (Feels dirty)
+        routine: Some(VoidRoutine),
+        x: 280,
+        y: 185,
+        lastOn: 0,
+    };
+}
+
+// TODO: The rest of this hell!
+
+#[allow(non_upper_case_globals)]
+static mut currentMenu: *mut menu_t = std::ptr::null_mut();
+
+#[allow(non_upper_case_globals)]
+static mut menuactive: bool = false;
+
+#[allow(non_upper_case_globals)]
+static mut itemOn: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut whichSkull: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut skullAnimCounter: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+pub(crate) static mut detailLevel: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+pub static mut screenSize: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+pub(crate) static mut screenBlocks: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut messageToPrint: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut messageString: *mut u8 = std::ptr::null_mut();
+
+#[allow(non_upper_case_globals)]
+static mut messageLastMenuActive: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut quickSaveSlot: i32 = -1;
+
+#[allow(non_snake_case)]
+pub fn M_Ticket() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_Drawer() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_Init() {
+    unsafe {
+        currentMenu = addr_of_mut!(MainMenu::MainDef);
+        menuactive = false;
+        itemOn = (*currentMenu).lastOn;
+        whichSkull = 0;
+        skullAnimCounter = 10;
+        screenSize = screenBlocks - 3;
+        messageToPrint = 0;
+        messageString = std::ptr::null_mut();
+        messageLastMenuActive = menuactive as i32;
+        quickSaveSlot = -1;
+    
+
+        match DOOMGLOBALS::with_ref(|g| g.gamemode) {
+            GameMode::Commercial => {
+                /*
+                Original source code comment:
+                // This is used because DOOM 2 had only one HELP
+                //  page. I use CREDIT as second page now, but
+                //  kept this hack for educational purposes.
+                */
+                MainMenu::MainMenu[MainMenu::main_e::readthis as usize] = MainMenu::MainMenu[MainMenu::main_e::quitdoom as usize];
+                MainMenu::MainDef.numitems -=1;
+                MainMenu::MainDef.y += 8;
+                NewGameMenu::NewDef.prevMenu = addr_of_mut!(MainMenu::MainDef);
+                ReadThis1::Read1Def.routine = Some(VoidRoutine);
+                ReadThis1::Read1Def.x = 330;
+                ReadThis1::Read1Def.y = 165;
+                ReadThis1::ReadMenu1[ReadThis1::read_e::rdthisempty1 as usize].routine = Some(VoidRoutineWithChoice);
+            },
+            GameMode::Shareware | GameMode::Registered => {
+                // TODO EpiDef.numitems--
+            }
+            _ => {
+                // do nothing :)
+            }
+        }
+    }
+}
+
+#[allow(non_snake_case)]
+pub fn M_StartControlPanel() {
+
+}

src/m_misc/mod.rs

@@ -0,0 +1,367 @@
+use std::ptr::addr_of_mut;
+
+use crate::d_strings;
+use crate::doomtype;
+use crate::hu_stuff::get_chat_macro_ptr;
+use crate::m_argv::{M_CheckParm, M_GetOptionalArgumentValueByArgument, PARM_NOT_FOUND};
+
+
+
+// static mut variable stuff
+
+#[allow(non_upper_case_globals)]
+static mut mouseSensitivity: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut snd_SfxVolumne: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut snd_MusicVolume: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut showMessages: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut usemouse: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut mousebfire: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut mousebstrafe: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut mousebforward: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut usejoystick: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut joybfire: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut joybstrafe: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut joybuse: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut joybspeed: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut screenblocks: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut detailLevel: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut numChannels: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut usegamma: i32 = 0;
+
+/// Represents a type-safe pointer to either a numeric or string global variable 
+pub enum DefaultLocation {
+
+    /// Pointer to an integer(i32) value
+    Int(*mut i32),
+
+    /// Pointer to a String value
+    Str(*mut String)
+}
+
+/// Represents a type to represent the extacted default fallback value
+pub enum ConfigValue {
+
+    /// Represents an integer(i32) configuration value
+    Int(i32),
+
+    /// Represents a String configuration value
+    Str(String)
+}
+
+/// Represents the name, location and default value of a configuation variable
+#[repr(C)]
+pub struct default_t {
+
+    /// The key used for the configuration value from the corresponding '.cfg' file
+    pub name: &'static str,
+
+    /// The memory location of the global variable to update
+    pub location: DefaultLocation,
+
+    /// The fallback value if the setting is missing from the file
+    pub default_value: ConfigValue
+}
+
+
+fn get_defaults() -> Vec<default_t> {
+    unsafe {
+        vec![
+            // mouse_sensitivity
+            default_t {
+                name: "mouse_sensitivity",
+                location: DefaultLocation::Int(addr_of_mut!(mouseSensitivity)),
+                default_value: ConfigValue::Int(5)
+            },
+            // snd_SfxVolumne
+            default_t {
+                name: "sfx_volume",
+                location: DefaultLocation::Int(addr_of_mut!(snd_SfxVolumne)),
+                default_value: ConfigValue::Int(8)
+            },
+            // snd_MusicVolume
+            default_t {
+                name: "snd_MusicVolumne",
+                location: DefaultLocation::Int(addr_of_mut!(snd_MusicVolume)),
+                default_value: ConfigValue::Int(8)
+            },
+            // showMessages
+            default_t {
+                name: "show_messages",
+                location: DefaultLocation::Int(addr_of_mut!(showMessages)),
+                default_value: ConfigValue::Int(1)
+            },
+            // usemouse
+            default_t {
+                name: "use_mouse",
+                location: DefaultLocation::Int(addr_of_mut!(usemouse)),
+                default_value: ConfigValue::Int(1)
+            },
+            // mousebfire
+            default_t {
+                name: "mouseb_fire",
+                location: DefaultLocation::Int(addr_of_mut!(mousebfire)),
+                default_value: ConfigValue::Int(0)
+            },
+            // mousebstrafe
+            default_t {
+                name: "mouseb_strafe",
+                location: DefaultLocation::Int(addr_of_mut!(mousebstrafe)),
+                default_value: ConfigValue::Int(1)
+            },
+            // mousebforward
+            default_t {
+                name: "mouseb_forward",
+                location: DefaultLocation::Int(addr_of_mut!(mousebforward)),
+                default_value: ConfigValue::Int(2)
+            },
+            // usejoystick
+            default_t {
+                name: "use_joystick",
+                location: DefaultLocation::Int(addr_of_mut!(usejoystick)),
+                default_value: ConfigValue::Int(0)
+            },
+            // joybfire
+            default_t {
+                name: "joyb_fire",
+                location: DefaultLocation::Int(addr_of_mut!(joybfire)),
+                default_value: ConfigValue::Int(0)
+            },
+            // joybstrafe
+            default_t {
+                name: "joyb_strafe",
+                location: DefaultLocation::Int(addr_of_mut!(joybstrafe)),
+                default_value: ConfigValue::Int(1)
+            },
+            // joybuse
+            default_t {
+                name: "joyb_use",
+                location: DefaultLocation::Int(addr_of_mut!(joybuse)),
+                default_value: ConfigValue::Int(3)
+            },
+            // joybspeed
+            default_t {
+                name: "joyb_speed",
+                location: DefaultLocation::Int(addr_of_mut!(joybspeed)),
+                default_value: ConfigValue::Int(2)
+            },
+            // screenblocks
+            default_t {
+                name: "screenblocks",
+                location: DefaultLocation::Int(addr_of_mut!(screenblocks)),
+                default_value: ConfigValue::Int(9)
+            },
+            // detailLevel
+            default_t {
+                name: "detailLevel",
+                location: DefaultLocation::Int(addr_of_mut!(detailLevel)),
+                default_value: ConfigValue::Int(0)
+            },
+            // numChannels
+            default_t {
+                name: "snd_channels",
+                location: DefaultLocation::Int(addr_of_mut!(numChannels)),
+                default_value: ConfigValue::Int(3)
+            },
+            // usegamma
+            default_t {
+                name: "usegamma",
+                location: DefaultLocation::Int(addr_of_mut!(usegamma)),
+                default_value: ConfigValue::Int(0)
+            },
+            // chatmacro0
+            default_t {
+                name: "chatmacro0",
+                location: DefaultLocation::Str(get_chat_macro_ptr(0)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO0.to_string())
+            },
+            // chatmacro1
+            default_t {
+                name: "chatmacro1",
+                location: DefaultLocation::Str(get_chat_macro_ptr(1)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO1.to_string())
+            },
+            // chatmacro2
+            default_t {
+                name: "chatmacro2",
+                location: DefaultLocation::Str(get_chat_macro_ptr(2)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO2.to_string())
+            },
+            // chatmacro3
+            default_t {
+                name: "chatmacro3",
+                location: DefaultLocation::Str(get_chat_macro_ptr(3)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO3.to_string())
+            },
+            // chatmacro4
+            default_t {
+                name: "chatmacro4",
+                location: DefaultLocation::Str(get_chat_macro_ptr(4)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO4.to_string())
+            },
+            // chatmacro5
+            default_t {
+                name: "chatmacro5",
+                location: DefaultLocation::Str(get_chat_macro_ptr(5)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO5.to_string())
+            },
+            // chatmacro6
+            default_t {
+                name: "chatmacro6",
+                location: DefaultLocation::Str(get_chat_macro_ptr(6)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO6.to_string())
+            },
+            // chatmacro7
+            default_t {
+                name: "chatmacro7",
+                location: DefaultLocation::Str(get_chat_macro_ptr(7)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO7.to_string())
+            },
+            // chatmacro8
+            default_t {
+                name: "chatmacro8",
+                location: DefaultLocation::Str(get_chat_macro_ptr(8)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO8.to_string())
+            },
+            // chatmacro9
+            default_t {
+                name: "chatmacro9",
+                location: DefaultLocation::Str(get_chat_macro_ptr(9)),
+                default_value: ConfigValue::Str(d_strings::HUSTR_CHATMACRO9.to_string())
+            }            
+        ]
+    }
+}
+
+#[allow(non_snake_case)]
+pub fn M_WriteFile(name: &str, source: std::fs::File, length: i64) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_ReadFile(name: &str, buffer: Vec<u8>) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_ScreenShot() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_LoadDefaults() {
+    // Set to defaults
+    let mut defaults = get_defaults();
+    for item in &defaults {
+        unsafe {
+            match &item.location {
+                DefaultLocation::Int(ptr) => {
+                    if let ConfigValue::Int(val) = item.default_value {
+                        **ptr = val;
+                    }
+                }
+                DefaultLocation::Str(ptr) => {
+                    if let ConfigValue::Str(val) = &item.default_value {
+                        **ptr = val.clone();
+                    }
+                }
+            }
+        }
+    } // end iter
+
+    // load custom cfg?
+    let mut cfg_location = "DEFAULT.CFG";
+    let p = M_CheckParm("-config");
+    if p != PARM_NOT_FOUND {
+        cfg_location = M_GetOptionalArgumentValueByArgument("-config").unwrap();
+    }
+
+    // read contents
+    if let Ok(cfg_content) = std::fs::read_to_string(cfg_location) {
+        for line in cfg_content.lines() {
+            let cfg_line = line.trim();
+            if cfg_line.is_empty() {
+                continue;
+            }
+            // split the non-empty cfg line into two
+            if let Some((parsed_cfg_key, parsed_cfg_value)) = cfg_line.split_once(char::is_whitespace) {
+                let key = parsed_cfg_key.trim();
+                let value = parsed_cfg_value.trim();
+
+                if let Some(cfg_item) = defaults.iter_mut().find(|d| d.name == key) {
+                    unsafe {
+                        match &cfg_item.location {
+                            DefaultLocation::Int(ptr) => {
+                                if value.starts_with("0x") {
+                                    if let Ok(num) = i32::from_str_radix(value, 16) {
+                                        **ptr = num;
+                                    }
+                                    else {
+                                        println!("Unable to parse value '{}' as an integer for configuation setting '{}'", value, key);
+                                        println!("Using defaults");
+                                    }
+                                }
+                                else if let Ok(num) = i32::from_str_radix(value, 10) {
+                                     **ptr = num;
+                                }
+                                else {
+                                    println!("Unable to parse value '{}' as an integer for configuation setting '{}'", value, key);
+                                    println!("Using defaults");
+                                }
+                            }
+                            DefaultLocation::Str(ptr) => {
+                                let cleaned_str = value.trim_matches('"').to_string();
+                                **ptr = cleaned_str;
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    } else {
+        println!("Unable to read configuation file '{}'", &cfg_location);
+        println!("Using defaults");
+    }
+
+}
+
+#[allow(non_snake_case)]
+pub fn M_SaveDefaults() {
+    
+}
+
+#[allow(non_snake_case)]
+pub fn M_DrawText(x: i32, y: i32, direct: bool, text: &str) {
+
+}

src/main.rs

@@ -1,7 +1,15 @@
 mod d_main;
+mod d_strings;
 mod doomdef;
+mod doomtype;
+mod hu_stuff;
 mod m_argv;
+mod m_menu;
+mod m_misc;
+mod renderer;
+mod v_video;
 mod w_wad;
+mod z_zone;
 mod math;
 
 

src/math/m_fixed.rs

@@ -2,46 +2,63 @@
 
 This provides fixed-point arithmetic as 32-bit 16.16
 */
+use std::ops::ShrAssign;
+
+use crate::doomtype::{
+    MININT,
+    MAXINT
+};
 
 pub const FRACBITS: i32 = 16;
 pub const FRACUNIT: i32 = 1 << FRACBITS;
 
-pub const MININT: i32 = 0x80000000;
+
-pub const MAXINT: i32 = 0x7fffffff;
 /// Struct representing a fixed point 32-bit value
 #[derive(Copy, Clone, PartialEq, Debug)]
-pub struct FixedPoint {
+#[allow(non_camel_case_types)]
+pub struct fixed_t {
     pub value: i32,
 }
 
-impl FixedPoint {
+impl fixed_t {
 
-    #[allow(non_snake_case)]
+    pub const fn new(val: i32) -> Self {
-    pub fn FixedMul(a: FixedPoint, b: FixedPoint) -> FixedPoint {
+        fixed_t { value: val }
-        let value = ((a.value as u64) * (b.value as u64) >> FRACBITS) as i32;
-        FixedPoint{value}
     }
     
     #[allow(non_snake_case)]
-    pub fn FixedDiv(a: FixedPoint, b: FixedPoint) -> FixedPoint {
+    pub fn FixedMul(a: fixed_t, b: fixed_t) -> fixed_t {
+        let value = ((a.value as u64) * (b.value as u64) >> FRACBITS) as i32;
+        fixed_t{value}
+    }
+
+    #[allow(non_snake_case)]
+    pub fn FixedDiv(a: fixed_t, b: fixed_t) -> fixed_t {
         if (i32::abs(a.value) >> 14) >= i32::abs(b.value) {
             if a.value^b.value == 0 {
-                FixedPoint{value: MININT};
+                fixed_t{value: MININT};
             }
             else {
-               FixedPoint{value: MAXINT};
+               fixed_t{value: MAXINT};
             }
         }
-        FixedPoint::FixedDiv2(a,b)
+        fixed_t::FixedDiv2(a,b)
     }
 
     #[allow(non_snake_case)]
-    pub fn FixedDiv2(a: FixedPoint, b: FixedPoint) -> FixedPoint {
+    pub fn FixedDiv2(a: fixed_t, b: fixed_t) -> fixed_t {
         let c: f64 = ((a.value as f64) / (b.value as f64)) * FRACUNIT as f64;
         if c >= 2147483648.0 || c < -2147483648.0 {
             panic!("FixedDiv: divide by zero");
         }
-        FixedPoint { value: c as i32 }
+        fixed_t { value: c as i32 }
     }
 
 } 
+
+impl ShrAssign<i32> for fixed_t {
+    fn shr_assign(&mut self, rhs: i32) {
+        // Shift the underlying wrapped i32 value directly
+        self.value >>= rhs;
+    }
+}

src/math/mod.rs

@@ -1,3 +1,5 @@
-// pub mod m_fixed;
+mod m_fixed;
 
-// pub use m_fixed::FixedPoint;
+pub use m_fixed::fixed_t;
+pub use m_fixed::FRACUNIT;
+pub use m_fixed::FRACBITS;

src/renderer/mod.rs

@@ -0,0 +1,130 @@
+// Main entry to Render stuff
+// i.e r_main c/h
+mod r_data;
+mod r_defs;
+mod r_plane;
+
+
+use crate::doomdef::SCREENWIDTH;
+use crate::math::{fixed_t, FRACUNIT};
+use crate::m_menu::{detailLevel, screenBlocks};
+use r_data::R_InitData;
+use r_defs::lighttable_t;
+use r_plane::R_InitPlanes;
+
+// Light constants
+// Orignal source comment: Now why not 32 levels here?
+pub const LIGHTLEVELS: i32 = 16;
+pub const MAXLIGHTSCALE: i32 = 48;
+pub const LIGHTSCALESHIFT: i32 = 12;
+pub const MAXLIGHTZ: i32 = 128;
+pub const LIGHTZSHIFT: i32 = 20;
+
+#[allow(non_upper_case_globals)]
+pub static mut scalelight: [[*mut lighttable_t; MAXLIGHTSCALE as usize]; LIGHTLEVELS as usize] = 
+    [[std::ptr::null_mut(); MAXLIGHTSCALE as usize]; LIGHTLEVELS as usize];
+
+#[allow(non_upper_case_globals)]
+pub static mut scalelightfixed: [*mut lighttable_t; MAXLIGHTSCALE as usize] = 
+    [std::ptr::null_mut(); MAXLIGHTSCALE as usize];
+
+#[allow(non_upper_case_globals)]
+pub static mut zlight: [[*mut lighttable_t; MAXLIGHTZ as usize]; LIGHTLEVELS as usize] = 
+    [[std::ptr::null_mut(); MAXLIGHTZ as usize]; LIGHTLEVELS as usize];
+
+/// R_InitLightTables
+/// Only inits the zlight table,
+///  because the scalelight table changes with view size.
+pub const DISTMAP:i32 = 2;
+
+
+/// Number of diminishing brightness levels.
+/// There a 0-31, i.e. 32 LUT in the COLORMAP lump.
+pub const NUMCOLORMAPS: i32 =  32;
+
+#[allow(non_upper_case_globals)]
+static mut viewcos: fixed_t = fixed_t{value: 0};
+
+#[allow(non_upper_case_globals)]
+static mut viewsin: fixed_t = fixed_t{value: 0};
+
+#[allow(non_upper_case_globals)]
+static mut setsizeneeded: bool = false;
+
+#[allow(non_upper_case_globals)]
+static mut setblocks: i32 = 0;
+
+#[allow(non_upper_case_globals)]
+static mut setdetail: i32 = 0;
+
+
+
+#[allow(non_snake_case)]
+fn R_InitPointToAngle() {
+    // this is unused in the original source
+    // we get this data from tables
+}
+
+#[allow(non_snake_case)]
+fn R_InitTables() {
+    // this is unused in the original source
+    // we get this data from tables
+}
+
+#[allow(non_snake_case)]
+fn R_InitLightTables() {
+    let mut startmap: i32;
+    let mut scale: fixed_t;
+    let mut level: i32;
+    for i in 0..(LIGHTLEVELS as usize) {
+        startmap = ((LIGHTLEVELS - 1 - (i as i32)) * 2) * NUMCOLORMAPS/LIGHTLEVELS;
+        for j in 0..(MAXLIGHTZ as usize) {
+            scale = fixed_t::FixedDiv(fixed_t{value: (SCREENWIDTH/2*FRACUNIT)}, fixed_t{value: ((j as i32) + 1) << LIGHTZSHIFT});
+            scale >>= LIGHTSCALESHIFT;
+
+            level = startmap - scale.value/DISTMAP;
+            level = level.clamp(0, NUMCOLORMAPS - 1);
+
+            // zlight[i][j] = colormaps + level * 256; //TODO: Implement zlight
+        }
+    }
+}
+
+
+
+/* // TODO: Implement player_t
+pub fn R_RenderPlayerView(player: *const player_t) {
+
+} 
+*/
+
+#[allow(non_snake_case)]
+pub fn R_Init() {
+    R_InitData();
+    println!("R_InitData");
+    R_InitPointToAngle();
+    println!("R_InitPointToAngle");
+    R_InitTables();
+    // viewwidth / viewheight / detailLevel are set by the defaults
+    println!("R_InitTables");
+    unsafe {R_SetViewSize(screenBlocks, detailLevel);}
+    R_InitPlanes();
+    println!("R_InitPlanes");
+    R_InitLightTables();
+    println!("R_InitLightTables");
+    //R_InitSkyMap();
+    println!("R_InitSkyMap");
+    //R_InitTranslationTables();
+    println!("R_InitTranslationTables")
+
+    // framecount = 0;
+}
+
+#[allow(non_snake_case)]
+pub fn R_SetViewSize(blocks: i32, detail: i32) {
+    unsafe {
+        setsizeneeded = true;
+        setblocks = blocks;
+        setdetail = detail;
+    }
+}

src/renderer/r_data.rs

@@ -0,0 +1,60 @@
+#[allow(non_snake_case)]
+fn R_InitTextures() {
+
+}
+
+#[allow(non_snake_case)]
+fn R_InitFlats() {
+
+}
+
+#[allow(non_snake_case)]
+fn R_InitSpriteLumps() {
+
+}
+
+#[allow(non_snake_case)]
+fn R_InitColormaps() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_GetColumn (tex: i32, col: i32) {
+
+}
+
+
+/// R_InitData
+/// Locates all the lumps that will be used by all views
+/// This must be called after `W_Init`
+#[allow(non_snake_case)]
+pub fn R_InitData() {
+    R_InitTextures();
+    println!("InitTextures");
+    R_InitFlats();
+    println!("InitFlats");
+    R_InitSpriteLumps();
+    println!("InitSprites");
+    R_InitColormaps();
+    println!("InitColormaps");
+}
+
+#[allow(non_snake_case)]
+pub fn R_PrecacheLevel() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_FlatNumForName(name: &str) -> i32 {
+    1
+}
+
+#[allow(non_snake_case)]
+pub fn R_TextureNumForName(name: &str) -> i32 {
+    1
+}
+
+#[allow(non_snake_case)]
+pub fn R_CheckTextureNumForName(name: &str) -> i32 {
+    1
+}

src/renderer/r_defs.rs

@@ -0,0 +1,441 @@
+use crate::doomdef::SCREENWIDTH;
+use crate::m_fixed::{fixed_t};
+use crate::tables::angle_t;
+
+// TODO: Implement d_think.h and p_mobj.h
+
+/// Original Source comment: 
+/// Silhouette, needed for clipping Segs (mainly)
+/// and sprites representing things.
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+#[repr(i32)]
+pub enum Silhouette {
+    None = 0,
+    Bottom = 1,
+    Top = 2,
+    Both = 3,
+}
+
+pub const MAXDRAWSEGS: i32 = 256;
+
+/// Original source comment
+/// This could be wider for >8 bit display.
+/// Indeed, true color support is posibble
+///  precalculating 24bpp lightmap/colormap LUT.
+///  from darkening PLAYPAL to all black.
+/// Could even us emore than 32 levels.
+type lighttable_t = u8;
+
+/// Original Source comment: 
+/// Your plain vanilla vertex.
+/// Note: transformed values not buffered locally,
+///  like some DOOM-alikes ("wt", "WebView") did.
+#[derive(Copy, Clone)]
+pub struct vertex_t {
+    x: fixed_t,
+    y: fixed_t
+}
+
+/// Original Source comment: 
+/// Each sector has a degenmobj_t in its center
+///  for sound origin purposes.
+/// I suppose this does not handle sound from
+///  moving objects (doppler), because
+///  position is prolly just buffered, not
+///  updated.
+pub struct degenmobj_t {
+    //TODO: implement d_think.h
+    // thinker: thinker_t,
+    x: fixed_t,
+    y: fixed_t,
+    z: fixed_t    
+}
+
+/// Sectors represent a distinct, closed polygon area on the map with uniform 
+/// floor heights, ceiling heights, lighting levels, and floor/ceiling textures.
+/// They also serve as containers for gameplay entities (`mobj_t`).
+/// Original Source comment: 
+/// The SECTORS record, at runtime.
+/// Stores things/mobjs.
+pub struct sector_t {
+    /// Height of the floor
+    pub(crate) floorheight: fixed_t,
+
+    /// Height of the ceiling
+    pub(crate) ceilingheight: fixed_t,
+
+    /// Texture index applied to the floor surface
+    pub(crate) floorpic: i16,
+
+    /// Texture index applied to the ceiling surface
+    pub(crate) ceilingpic: i16,
+
+    /// The current brightness level for the sector
+    pub(crate) lightlevel: i16,
+
+    /// Sector type/behaviour flags (e.g sewage / lava damaging floors)
+    pub(crate) special: i16,
+
+    /// Unique ID tag used by linedef triggers to identify and manipluate this sector
+    pub(crate) tag: i16,
+    
+    /// Sound propagation state variable used during sound traversal calculations.
+    /// Values: 0 = untraversed, 1 or 2 = sound lines - 1.
+    pub(crate) soundtraversed: i32,
+
+    //TODO: mobj_t implementation (p_mobj.h)
+    /// Pointer to the map object (`mobj_t`) that generated a sound in this sector, or null.
+    pub(crate) soundtarget: *mut mobj_t,
+
+    /// A bounding box `[ymin, ymax, xmin, xmax]` mapping blocks for height changes and collisions.
+    pub(crate) blockbox: [i32; 4],
+
+    ///  simplified, stationary map object representing the central origin point for sound playback.
+    pub(crate) soundorg: degenmobj_t,
+
+    /// A frame check counter variable used to avoid re-processing this sector multiple times per tick.
+    pub(crate) validcount: i32,
+
+    /// A dynamic collection of all map objects currently inside this sector.
+    /// TODO: Change back to *mut mobj_t linked list later
+    pub(crate) thinglist: Vec<mobj_t>,
+
+    /// A generic raw pointer to an active thinker struct (e.g., `plat_t`, `ceiling_t`) for handling moving parts
+    pub(crate) specialdata: *mut (), 
+
+    /// The total number of linedefs that form the boundaries of this sector.
+    pub(crate) linecount: i32,
+
+    /// A raw pointer to an array of pointers pointing to the `line_s` (linedef) structs that border this sector.
+    pub(crate) lines: *mut *mut line_s, 
+}
+
+/// Linedefs are made up of either one or two sidedefs (front and back). 
+/// A sidedef contains texture alignment offsets, texture indices, and 
+/// points directly to the sector it faces.
+pub struct sidedef_t {
+
+    /// Horizontal alignment offset added to the calculated texture column.
+    pub(crate) textureoffset: fixed_t,
+
+     /// Vertical alignment offset added to the calculated texture top.
+    pub(crate) rowoffset: fixed_t, 
+
+    // texture indices
+
+    /// The index of the upper wall texture (above the ceiling gap).
+    pub(crate) toptexture: i16,
+
+    /// The index of the lower wall texture (below the floor gap).
+    pub(crate) bottomtexture: i16,
+
+    /// The index of the middle wall texture (used on single-sided walls or windows).
+    pub(crate) midtexture: i16,
+    
+    /// A raw pointer to the sector this specific side faces.
+    pub(crate) sector: *mut sector_t,
+}
+
+/// The line slope classification type.
+/// 
+/// Used by the collision and rendering engines to optimize intersection 
+/// checks and line-of-sight tracking based on the orientation of a wall line.
+#[derive(Copy, Clone)]
+enum slopetype_t {
+
+    /// A perfectly horizontal line (dy == 0).
+    ST_HORIZONTAL,
+
+    /// A perfectly vertical line (dx == 0).
+    ST_VERTICAL,
+
+    /// A line with a positive slope rising from bottom-left to top-right (dx and dy have the same sign).
+    ST_POSITIVE,
+
+    /// A line with a negative slope falling from top-left to bottom-right (dx and dy have opposite signs).
+    ST_NEGATIVE
+}
+
+
+/// Linedefs form the walls and structural geometry of a map. They contain
+/// pointers to their start/end vertices, front/back siding data, physical 
+/// triggers (`special`), and precalculated bounding extents to assist the physics engine.
+pub struct linedef_t {
+     /// Raw pointer to the starting vertex (v1) of the wall.
+    pub(crate) v1: *mut vertex_t,
+    
+    /// Raw pointer to the ending vertex (v2) of the wall.
+    pub(crate) v2: *mut vertex_t,
+
+    /// Precalculated horizontal delta value (v2.x - v1.x) for quick side-of-line checking.
+    pub(crate) dx: fixed_t,
+    
+    /// Precalculated vertical delta value (v2.y - v1.y) for quick side-of-line checking.
+    pub(crate) dy: fixed_t,
+
+    /// Configuration flags handling behavior (e.g., solid wall, blocks monsters, secret map wall).
+    pub(crate) flags: i16,
+    
+    /// The linedef activation type/trigger function index (e.g., doors, teleporters, lifts).
+    pub(crate) special: i16,
+    
+    /// A unique ID tag matching sector targets to process execution triggers.
+    pub(crate) tag: i16,
+
+    /// Sidedef lookups. `sidenum[0]` is the front side; `sidenum[1]` is the back side (or -1 if single-sided).
+    pub(crate) sidenum: [i16; 2],			
+
+    /// Bounding box layout `[ymin, ymax, xmin, xmax]` representing the full grid extent of the line.
+    pub(crate) bbox: [fixed_t; 4],
+
+    /// Slope classification used to optimize physics intersection and visibility clipping loops.
+    pub(crate) slopetype: slopetype_t,
+
+    /// Raw pointer to the sector directly in front of this linedef's first side.
+    pub(crate) frontsector: *mut sector_t,
+    
+    /// Raw pointer to the sector behind this linedef's second side, or null if single-sided.
+    pub(crate) backsector: *mut sector_t,
+
+    /// A frame counter lookup variable used to avoid parsing or processing this line multiple times per tick.
+    pub(crate) validcount: i32,
+
+    /// A generic raw pointer to a running thinker action layout (e.g., standard scrolling wall textures).
+    pub(crate) specialdata: *mut (),		
+}
+
+
+/// Subsectors are the structural leaves at the bottom of the BSP tree. 
+/// They represent smaller, guaranteed-convex sub-polygons carved out of a 
+/// larger sector, defined by a sequential slice of rendering lines (`seg_t`).
+pub struct subsectordef_t {
+    /// A raw pointer to the parent sector that this subsector belongs to.
+    pub(crate) sector: *mut sector_t,
+
+    /// The total number of consecutive line segments (`seg_t`) that form this subsector.
+    pub(crate) numlines: i16,
+
+    /// The starting array index inside the global `segs` array for this subsector's lines.
+    pub(crate) firstline: i16,
+}
+
+/// Segs are clipped slices of linedefs generated by the node builder. 
+/// The rendering engine processes them in strict front-to-back order 
+/// using the BSP tree to draw wall surfaces without sorting artifacts.
+pub struct segdef_t {
+    /// Raw pointer to the starting vertex (v1) of this specific segment.
+    pub(crate) v1: *mut vertex_t,
+
+    /// Raw pointer to the ending vertex (v2) of this specific segment.
+    pub(crate) v2: *mut vertex_t,
+    
+    /// The distance offset along the original linedef where this segment begins.
+    pub(crate) offset: fixed_t,
+
+    /// The absolute binary angle of the segment (represented as a 32-bit unsigned integer).
+    pub(crate) angle: angle_t,
+
+    /// Raw pointer to the sidedef structure containing the texture data for this segment.
+    pub(crate) sidedef: *mut sidedef_t,
+
+    /// Raw pointer to the parent linedef structure this segment was split out from.
+    pub(crate) linedef: *mut linedef_t,
+
+    /// Raw pointer to the sector directly in front of this segment.
+    pub(crate) frontsector: *mut sector_t,
+
+    /// Raw pointer to the sector behind this segment, or null if it belongs to a solid one-sided wall.
+    pub(crate) backsector: *mut sector_t,
+}
+
+/// Nodes form the internal branching skeleton of the map's 3D visibility tree.
+/// Each node acts as a cutting plane line segment that splits a sub-region into
+pub struct node_t {
+    /// Starting X coordinate of the division splitter line.
+    pub(crate) x: fixed_t,
+
+    /// Starting Y coordinate of the division splitter line.
+    pub(crate) y: fixed_t,
+    
+    /// Horizontal delta length of the division splitter vector.
+    pub(crate) dx: fixed_t,
+    
+    /// Vertical delta length of the division splitter vector.
+    pub(crate) dy: fixed_t,
+
+    /// Precalculated bounding boxes [ymin, ymax, xmin, xmax] for the right [0] and left [1] child spaces.
+    pub(crate) bbox: [[FixedT; 4]; 2],
+
+    /// References to left [0] and right [1] children. If highest bit (0x8000) is set, it targets a subsector_t index.
+    pub(crate) children: [u16; 2],
+}
+
+/// A runtime record of a drawn wall segment.
+/// Stores clipping and scaling metadata to correctly occlude and scale sprites behind it.
+pub struct drawseg_t {
+    /// Pointer to the line segment being rendered (usually seg_t).
+    pub(crate) curline: *mut sector_t,
+
+    /// Starting horizontal screen column (left boundary).
+    pub(crate) x1: i32,
+    
+    /// Ending horizontal screen column (right boundary).
+    pub(crate) x2: i32,
+
+    /// Initial texture scale at the starting column (x1).
+    pub(crate) scale1: fixed_t,
+
+    /// Final texture scale at the ending column (x2).
+    pub(crate) scale2: fixed_t,
+
+    /// Amount to change the texture scale per horizontal pixel step.
+    pub(crate) scalestep: fixed_t,
+
+    /// Silhouette type flags handling sprite occlusion (e.g., SIL_BOTTOM, SIL_TOP).
+    pub(crate) silhouette: i32,
+
+    /// Maximum floor height boundary for bottom silhouette clipping.
+    pub(crate) bsilheight: fixed_t,
+
+    /// Minimum ceiling height boundary for top silhouette clipping.
+    pub(crate) tsilheight: fixed_t,
+
+    /// Pointer to the screen column array managing top clipping bounds for sprites.
+    pub(crate) sprtopclip: *mut u16,
+
+    /// Pointer to the screen column array managing bottom clipping bounds for sprites.
+    pub(crate) sprbottomclip: *mut u16,
+
+    /// Pointer to the column offset array used for rendering masked textures.
+    pub(crate) maskedtexturecol: *mut u16,
+}
+
+/// A hardware-agnostic 2D picture or graphic asset.
+/// Uses a column-oriented format to optimize rapid vertical stretching and scaling.
+pub struct patch_t {
+    /// Total width of the graphic patch in pixels.
+    pub(crate) width: u16,
+    
+    /// Total height of the graphic patch in pixels.
+    pub(crate) height: u16,
+
+    /// Horizontal offset relative to the origin (used to center weapon and sprite frames).
+    pub(crate) leftoffset: u16,
+
+    /// Vertical offset relative to the origin (used to center weapon and sprite frames).
+    pub(crate) topoffset: u16,
+
+    /// Array of byte offsets from the start of the patch to the start of each vertical pixel column.
+    /// only [width] used
+    // the [0] is &columnofs[width] 
+    pub(crate) columnofs: [i32; 8],
+}
+
+/// A visible sprite entry prepared for rendering.
+/// Tracks screen bounds, scaling, and clipping parameters for a partly visible map object.
+pub struct vissprite_t {
+    /// Pointer to the previous sprite in the doubly linked list.
+    pub(crate) prev: *mut vissprite_t,
+    
+    /// Pointer to the next sprite in the doubly linked list.
+    pub(crate) next: *mut vissprite_t,
+    
+    /// Starting horizontal screen column (left boundary).
+    pub(crate) x1: i32,
+    
+    /// Ending horizontal screen column (right boundary).
+    pub(crate) x2: i32,
+
+    /// Global X coordinate used for line-side visibility checks.
+    pub(crate) gx: fixed_t,
+    
+    /// Global Y coordinate used for line-side visibility checks.
+    pub(crate) gy: fixed_t,		
+
+    /// Global bottom Z coordinate used for silhouette clipping calculations.
+    pub(crate) gz: fixed_t,
+    
+    /// Global top Z coordinate used for silhouette clipping calculations.
+    pub(crate) gzt: fixed_t,
+
+    /// Horizontal texture offset fraction at screen column x1.
+    pub(crate) startfrac: fixed_t,
+    
+    /// Scale factor of the sprite relative to its distance from the camera.
+    pub(crate) scale: fixed_t,
+    
+    /// Horizontal step scale factor (inverted and negative if the sprite is flipped).
+    pub(crate) xiscale: fixed_t,	
+
+    /// Vertical texture alignment midpoint coordinate.
+    pub(crate) texturemid: fixed_t,
+    
+    /// The index of the graphic patch asset being rendered.
+    pub(crate) patch: i32,
+
+    /// Pointer to the color lookup array handling lighting, shadows, and full-brightness frames.
+    pub(crate) colormap: *mut lighttable_t,
+   
+    /// Cached copy of the parent map object's physics and state flags.
+    pub(crate) mobjflags: i32,
+}
+
+/// Animation frame data for a sprite object.
+/// Tracks raw graphic lump IDs and horizontal flip bits for all 8 view rotations.
+#[derive(Copy, Clone)]
+pub struct spriteframe_t {
+    /// True if the sprite has directional rotation variants; false if it looks identical from all sides.
+    pub(crate) rotate: bool,
+
+    /// WAD graphic lump indices representing the image assets for view angles 0 to 7.
+    pub(crate) lump: [i16; 8],
+
+    /// Bitmask flags (1 = mirror image horizontally) applied to view angles 0 to 7 to save space.
+    pub(crate) flip: [u8; 8],
+}
+
+/// A top-level sprite asset container managing a series of sequential animation frames.
+pub struct spritedef_t {
+    /// Total number of animation frames allocated for this sprite sequence.
+    pub(crate) numframes: i32,
+
+    /// Raw pointer to the array of frame records tracking rotation and asset data.
+    pub(crate) spriteframes: *mut spriteframe_t,
+}
+
+/// A floor or ceiling polygon segment prepared for flat horizontal texture mapping.
+/// Merges drawing spans to prevent visible gaps or layout cracking during screen refresh.
+pub struct visplane_t {
+    /// Absolute height level of the floor or ceiling plane in fixed-point space.
+    pub(crate) height: fixed_t,
+
+    /// WAD graphic texture flat index applied to the surface.
+    pub(crate) picnum: i32,
+
+    /// Calculated light/brightness visibility level of the flat polygon plane.
+    pub(crate) lightlevel: i32,
+
+    /// The leftmost horizontal screen column index bound for drawing.
+    pub(crate) minx: i32,
+
+    /// The rightmost horizontal screen column index bound for drawing.
+    pub(crate) maxx: i32,
+  
+    /// Memory padding byte mimicking historical x-1 lookups.
+    pub(crate) pad1: u8,
+
+    /// Dynamic horizontal boundary array tracing top rendering margins across columns.
+    pub(crate) top: [u8; SCREENWIDTH],
+
+    /// Memory padding byte mimicking historical array bounds checks.
+    pub(crate) pad2: u8,
+
+    /// Memory padding byte mimicking historical array bounds checks.
+    pub(crate) pad3: u8,
+
+    /// Dynamic horizontal boundary array tracing bottom rendering margins across columns.
+    pub(crate) bottom: [u8; SCREENWIDTH],
+
+    /// Memory padding byte mimicking historical x+1 lookups.
+    pub(crate) pad4: u8,
+}

src/renderer/r_plane.rs

@@ -0,0 +1,39 @@
+#[allow(non_snake_case)]
+pub fn R_InitPlanes() {
+    // Original source comment
+    // doh!
+    // wtf?
+}
+
+#[allow(non_snake_case)]
+pub fn R_ClearPlanes() {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_MapPlane (y: i32, x1: i32, x2: i32) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_MakeSpans(x: i32, t1: i32, b1: i32, t2: i32, b2: i32) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_DrawPlanes() {
+
+}
+
+/*  TODO: Implement visplane_t
+
+#[allow(non_snake_case)]
+pub fn R_FindPlane(height: fixed_t, picnum: i32, lightlevel: i32) -> *const visplane_t {
+
+}
+
+#[allow(non_snake_case)]
+pub fn R_CheckPlane(pl: *const visplane_t, start: i32, stop: i32) -> *const visplane_t {
+
+}
+*/

src/v_video/mod.rs

@@ -0,0 +1,43 @@
+use crate::doomdef::{SCREENHEIGHT, SCREENWIDTH};
+use crate::doomtype;
+
+pub const CENTERY: i32 = SCREENHEIGHT / 2;
+
+// static var stuff
+#[allow(non_upper_case_globals)]
+static mut screens: [[u8; (SCREENWIDTH*SCREENHEIGHT) as usize]; 5] = [[0u8; (SCREENWIDTH*SCREENHEIGHT) as usize]; 5];
+
+
+#[allow(non_snake_case)]
+pub fn V_Init() {
+    // Do nothing :)
+    // the memory is already allocated
+}
+
+#[allow(non_snake_case)]
+pub fn V_CopyRect(srcx: i32, srcy: i32, srcscrn: i32, width: i32, height: i32, destx: i32, desty: i32, destscrn: i32) {
+
+}
+
+/* 
+TODO: Implement "r_data"
+#[allow(non_snake_case)]
+pub fn V_DrawPatch(x: i32, y: i32, scrn: i32, patch: Vec<patch_t>) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn V_DrawPatchDirect(x: i32, y: i32, scrn: i32, patch: Vec<patch_t>) {
+
+}
+*/
+
+#[allow(non_snake_case)]
+pub fn V_GetBlock(x: i32, y: i32, scrn: i32, width: i32, height: i32, dest: Vec<u8>) {
+
+}
+
+#[allow(non_snake_case)]
+pub fn V_MarkRect(x: i32, y: i32, width: i32, height: i32) {
+
+}

src/z_zone/mod.rs

@@ -0,0 +1,165 @@
+/// Memory allocator stuff
+/// Compared to the original source, this will be some what "lean n' mean"
+use std::cell::RefCell;
+use std::collections::HashMap;
+
+#[derive(Debug, Clone, Copy, PartialEq, PartialOrd)]
+/// The PurgeTags (PUs)
+/// Tags < 100 are not overwritten untill freed
+pub enum PurgeTag {
+    /// Static the entire execution time
+    Static = 1,
+    /// Static while playing
+    Sound = 2,
+    /// static while playing
+    Music = 3,
+    /// Original source comment: anything else dave wants static
+    Dave = 4,
+    /// static until level exit
+    Level = 50,
+    /// static for special thinkers in a level
+    LevSpec = 51,
+    // Tags >= 100 are "purgable" whenever needed
+    PurgeLevel = 100,
+    Cache = 101,
+}
+
+
+/// Provides metadata on 
+struct AllocMeta {
+    /// The size of the allocation
+    size: usize,
+    /// The PU tag associated with the allocation
+    tag: i32,
+    /// A pointer to the caller's tracking pointer, cleared automatically upon freeing
+    user: *mut *mut u8,
+}
+
+
+thread_local! {
+    // We promise not to be naughty and access this from another thread :)
+    /// Mapping from pointers (as usize) to the correspond AllocationMeta
+    static REGISTRY: RefCell<HashMap<usize, AllocMeta>> = RefCell::new(HashMap::new());
+}
+
+// Helper method that we can use to access the registry
+fn with_registry<F, R>(f: F) -> R 
+where
+    F: FnOnce(&mut HashMap<usize, AllocMeta>) -> R
+{
+    REGISTRY.with(|registry| f(&mut *registry.borrow_mut()))
+}
+
+#[allow(non_snake_case)]
+/// Initalized the Zone memory allocator sub-system
+pub fn Z_Init() {
+    // do nothing, we get lazy init of the registry.
+}
+
+#[allow(non_snake_case)]
+/// Allocate a contiguous chunk of zeroed memory from the zone allocator
+/// # Safety
+/// This function returns a raw pointer that bypasses Rust's automatic memory 
+/// tracking. The returned memory must be manually reclaimed using `Z_Free`.
+pub unsafe fn Z_Malloc(size: usize, tag: i32, user: *mut *mut u8) -> *mut u8 {
+    let mut buffer = vec![0u8; size];
+    let ptr = buffer.as_mut_ptr();
+
+    // ensures Rust does not drop the buffer at the end of this block
+    std::mem::forget(buffer);
+
+    // Update the engine's tracking pointer if one was provided
+    if !user.is_null() {
+        unsafe {
+            *user = ptr;
+        }
+    }
+
+    // Save allocation details using the pointer address as the key
+    with_registry(|map| {
+        map.insert(ptr as usize, AllocMeta { size, tag, user });
+    });
+
+    ptr
+}
+
+#[allow(non_snake_case)]
+/// Reclaims and frees a allocation from Z_Malloc
+/// # Safety
+/// The provided pointer must point to a valid allocation tracked by the registry.
+/// Passing an invalid or already freed pointer can result in undefined behavior
+pub unsafe fn Z_Free(ptr: *mut u8) {
+    if ptr.is_null() {
+        return;
+    }
+    let removed = with_registry(|map| map.remove(&(ptr as usize)));
+    
+    if let Some(meta) = removed {
+        // Clear the caller's tracking pointer to prevent use-after-free
+        if !meta.user.is_null() {
+            unsafe {
+                *meta.user = std::ptr::null_mut();
+            }
+        }
+        // re-build the vector so Rust can drop it
+        unsafe {
+            let _dropped_vec = Vec::from_raw_parts(ptr, meta.size, meta.size);
+        }
+    }
+}
+
+#[allow(non_snake_case)]
+/// Frees all memory allocations between the specific lifetime PU tags.
+/// # Safety
+/// All pointers tracked within this tag boundary are invalidated and deallocate
+pub unsafe fn Z_FreeTags(low_tag: i32, high_tag: i32) {
+
+    // get all of the allocations to free
+    let tags_to_free: Vec<usize> = with_registry(|map| {
+        map.iter()
+            .filter(|(_, meta)| meta.tag >= low_tag && meta.tag <= high_tag)
+            .map(|(ptr_addr,_)| *ptr_addr)
+            .collect()
+    });
+
+    // remove each pointer returned from the map and drop the memory
+
+    for ptr_addr in tags_to_free {
+        let removed_ptr = with_registry(|map| map.remove(&ptr_addr));
+
+        if let Some(meta) = removed_ptr {
+            let p = ptr_addr as *mut u8;
+            unsafe {
+                // clear caller tracking pointer to preven use after free
+                if !meta.user.is_null() {
+                    *meta.user = std::ptr::null_mut();
+                }
+
+                let _dropped_vec = Vec::from_raw_parts(p, meta.size, meta.size);
+            }
+        }
+    }
+}
+
+// Internal ChangeTag function
+#[allow(non_snake_case)]
+fn Z_ChangeTagInternal(ptr: *mut u8, tag: i32) {
+    if ptr.is_null() {
+        return;
+    }
+
+    with_registry(|map| {
+        if let Some(meta) = map.get_mut(&(ptr as usize)) {
+            meta.tag = tag;
+        }
+    })
+}
+/// Modifies the lifetime tag of an active allocation.
+/// 
+/// # Safety
+/// The provided pointer must point to a valid allocation tracked by the registry
+#[allow(non_snake_case)]
+pub unsafe fn Z_ChangeTag(ptr: *mut u8, tag: i32) {
+    // removes the original helper macro from the original C, we don't need withcraft here
+    Z_ChangeTagInternal(ptr, tag);
+}