Merge remote-tracking branch 'origin'

code/core/impl/string.c

@@ -29,6 +29,20 @@ Str8 Str8_WrapZ(U8 *data) {
 	return result;
 }
 
+#define FNV_OFFSET_BIAS ((U64) 0xCBF29CE484222325)
+#define FNV_PRIME       ((U64) 0x100000001B3)
+
+U64 Str8_Hash(Str8 v) {
+	U64 result = FNV_OFFSET_BIAS;
+
+	for (S64 it = 0; it < v.count; ++it) {
+		result ^= v.data[it];
+		result *= FNV_PRIME;
+	}
+
+	return result;
+}
+
 Str8 Str8_Copy(M_Arena *arena, Str8 s) {
 	Str8 result;
 	result.count = s.count;

code/core/macros.h

@@ -36,6 +36,11 @@
 #define SLL_PopN(h, next) (((h) != 0) ? (h) = (h)->next : 0)
 
 #define SLL_Enqueue(h, t, n) SLL_EnqueueN(h, t, n, next)
+#define SLL_EnqueueFront(h, t, n) SLL_EnqueueFrontN(h, t, n, next)
+#define SLL_Dequeue(h, t) SLL_DequeueN(h, t, next)
+
+#define SLL_Push(h, n) SLL_PushN(h, n, next)
+#define SLL_Pop(h) (((h) != 0) ? (h) = (h)->next : 0)
 
 #define function      static
 #define internal      static

code/core/string.h

@@ -11,6 +11,8 @@ function Str8 Str8_Wrap(S64 count, U8 *data);
 function Str8 Str8_WrapRange(U8 *start, U8 *end);
 function Str8 Str8_WrapZ(U8 *data);
 
+function U64 Str8_Hash(Str8 v);
+
 function Str8 Str8_Copy(M_Arena *arena, Str8 s);
 
 function Str8 Str8_Format(M_Arena *arena, const char *format, ...);

code/draw/core.c

@@ -1,3 +1,59 @@
+
+U32 D_ImageHandle(D_Context *draw, Str8 name) {
+	U32 result = 0;
+
+	U64 hash  = Str8_Hash(name);
+	U64 index = hash & (D_ASSET_HASH_COUNT - 1);
+
+	D_AssetHash *lookup = draw->lookup[index];
+	while (lookup != 0) {
+		if (lookup->hash == hash && Str8_Equal(lookup->value, name, 0)) {
+			result = lookup->id;
+			break;
+		}
+
+		lookup = lookup->next;
+	}
+
+	return result;
+}
+
+
+void D_AnimationInit(D_Animation *a, U32 id, U32 rows, U32 cols, F32 time) {
+	a->id = id;
+
+	a->rows = rows;
+	a->cols = cols;
+
+	a->time = 0;
+	a->frame_time = time;
+
+	a->frame = V2F(1.0f / (F32) cols, 1.0f / (F32) rows);
+
+	a->index = 0;
+}
+
+R2f D_AnimationFrame(D_Animation *a) {
+	R2f result = { 0 };
+
+	U32 row = a->index / a->cols;
+	U32 col = a->index % a->cols;
+
+	result.min = V2F(a->frame.w * col, a->frame.h * row);
+	result.max = V2F(result.min.x + a->frame.w, result.min.y + a->frame.h);
+	return result;
+}
+
+void D_AnimationUpdate(D_Animation *a, F32 dt) {
+	a->time += dt;
+	if (a->time >= a->frame_time) {
+		a->time   = 0;
+		a->index += 1;
+
+		if (a->index >= (a->rows * a->cols)) { a->index = 0; }
+	}
+}
+
 void D_Begin(D_Context *draw, Vk_Frame *frame, U32 max_rects) {
 	Vk_Buffer *rbo   = &frame->rbo;
 
@@ -127,14 +183,19 @@ void _D_Rect(D_Context *draw, D_RectOpts *opts) {
 		else {
 			Vk_Image *image = &draw->images[opts->texture].image;
 
-			if (image->width > image->height) {
+			F32 width  = cast(F32) image->width;
-				rect->w = opts->scale * ((F32) image->width / (F32) image->height);
+			F32 height = cast(F32) image->height;
-				rect->h = opts->scale;
+
-			}
+			if (opts->flags & D_RECT_UV_ASPECT) {
-			else {
+				width  *= (opts->uv.max.x - opts->uv.min.x);
-				rect->w = opts->scale;
+				height *= (opts->uv.max.y - opts->uv.min.y);
-				rect->h = opts->scale * ((F32) image->height / (F32) image->width);
 			}
+
+			F32 aspect_w = (width > height) ? (width / height) : 1.0f;
+			F32 aspect_h = (width > height) ? 1.0f : (height / width);
+
+			rect->w = opts->scale * aspect_w;
+			rect->h = opts->scale * aspect_h;
 		}
 
 		draw->n_rects += 1;

code/draw/core.h

@@ -48,8 +48,33 @@ struct D_Rect {
 
 StaticAssert(sizeof(D_Rect) == 64);
 
+typedef struct D_Animation D_Animation;
+struct D_Animation {
+	U32 id;
+
+	U32 rows;
+	U32 cols;
+	F32 frame_time;
+	F32 time;
+
+	V2f frame; // size of one frame
+
+	U32 index;
+};
+
 struct G_Camera;
 
+#define D_ASSET_HASH_COUNT 128
+
+typedef struct D_AssetHash D_AssetHash;
+struct D_AssetHash {
+	D_AssetHash *next;
+
+	Str8 value;
+	U64  hash;
+	U32  id; // texture id
+};
+
 typedef struct D_Context D_Context;
 struct D_Context {
 	Vk_Buffer *rbo;
@@ -73,6 +98,8 @@ struct D_Context {
 	U32 window_width;
 	U32 window_height;
 
+	D_AssetHash *lookup[D_ASSET_HASH_COUNT];
+
 	struct G_Camera *camera;
 };
 
@@ -80,6 +107,7 @@ typedef U32 D_RectFlags;
 enum D_RectFlags {
 	D_RECT_IGNORE_ASPECT     = (1 << 0), // by default only width is used as a "dimension"
 	D_RECT_PER_VERTEX_COLOUR = (1 << 1), // split colours per vertex
+	D_RECT_UV_ASPECT         = (1 << 2), // get the aspect from the uv rect rather than the full image
 };
 
 typedef struct D_RectOpts D_RectOpts;
@@ -111,6 +139,12 @@ struct D_RectOpts {
 	};
 };
 
+function U32 D_ImageHandle(D_Context *draw, Str8 name);
+
+function void D_AnimationInit(D_Animation *a, U32 id, U32 rows, U32 cols, F32 time);
+function R2f  D_AnimationFrame(D_Animation *a);
+function void D_AnimationUpdate(D_Animation *a, F32 dt);
+
 function void D_Begin(D_Context *draw, Vk_Frame *frame, U32 max_rects);
 function void D_End(D_Context *draw, Vk_Frame *frame);
 

code/first.c

@@ -26,15 +26,12 @@
 #include "game/impl/bandit.c"
 #include "game/testnavmesh.h"
 
-const int width = 1280;
-const int height = 720;
-
 int main(int argc, char **argv)
 {
-	(void)argc;
+	(void) argc;
-	(void)argv;
+	(void) argv;
 
-	if (!SDL_Init(SDL_INIT_VIDEO))
+	if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO))
 	{
 		printf("[Error] :: Failed to initialise SDL3 (%s)\n", SDL_GetError());
 		return 1;
@@ -47,6 +44,30 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
+	SDL_AudioStream *austream;
+	Str8 audio_data;
+	M_TempScope(0, 0) {
+		SDL_AudioSpec spec;
+		spec.format   = SDL_AUDIO_S16LE;
+		spec.channels = 2;
+		spec.freq     = 44100;
+
+		austream = SDL_OpenAudioDeviceStream(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &spec, 0, 0);
+
+		if (!austream) {
+			printf("Failed to open audio stream (%s)\n", SDL_GetError());
+		}
+
+		Str8 exec = FS_SystemPath(temp.arena, FS_SYSTEM_PATH_EXE);
+		Str8 path = Sf(temp.arena, "%.*s/assets/outside_ambience.wav", Sv(exec));
+
+		SDL_AudioSpec wav_spec;
+		U32 count;
+
+		SDL_LoadWAV((const char *) path.data, &wav_spec, &audio_data.data, &count);
+		audio_data.count = count;
+	}
+
 	Vk_Setup(window);
 
 	G_State *game = 0;
@@ -59,6 +80,7 @@ int main(int argc, char **argv)
 
 		G_ImagesLoad(game);
 		G_PipelinesLoad(game);
+		G_AudioLoad(game);
 
 		G_Camera *camera = &game->camera;
 
@@ -115,10 +137,20 @@ int main(int argc, char **argv)
     world->player.currentArea = 0;
 	}
 
+
+	D_Animation animation;
+	{
+		U32 id = D_ImageHandle(&game->draw, S("npc_front_base_white"));
+		D_AnimationInit(&animation, id, 1, 4, 1.0f / 20.0f);
+	}
+
 	bool running = true;
 
 	printf("%zu size in bytes\n", sizeof(TestNavMesh));
 
+	const int width  = 1280;
+	const int height = 720;
+
 	while (running)
 	{
 		SDL_Event e;
@@ -130,13 +162,14 @@ int main(int argc, char **argv)
 			}
       V3f projection = G_CameraUnproject(&game->camera, V2f_Clip(
         V2F(e.button.x, e.button.y),
-        V2F(width, height)
+        V2F((F32) width, (F32) height)
       ));
       game->world->mouseProjected = V2F(projection.x, projection.y);
       ProcessEvents(&e, game->world);
 		}
 
 		UpdateWorld(1.0f / 60.0f, game->world);
+		D_AnimationUpdate(&animation, 1.0f / 250.0f);
     game->camera.p.x = game->world->player.pos.x;
     game->camera.p.y = game->world->player.pos.y;
 
@@ -176,10 +209,15 @@ int main(int argc, char **argv)
 
 		D_Begin(&game->draw, frame, D_MAX_RECTS);
 
-    RenderWorld(game->world, &game->draw);
+    //RenderWorld(game->world, &game->draw);
-		D_Rect(&game->draw, 0.0f, 0.0f, .texture = 1);
+// 		D_Rect(&game->draw, 0.0f, 0.0f, .texture = D_ImageHandle(&game->draw, S("saloon_ext")), .scale = 4.0f);
-		D_Rect(&game->draw, -8.0f, 0.0f, .texture = 2, .scale = 2.0f);
+// 		D_Rect(&game->draw, -8.0f, 0.0f, .texture = 2, .scale = 2.0f);
-		D_Rect(&game->draw, 6.0f, 0.0f, .texture = 3);
+// 		D_Rect(&game->draw, 6.0f, 0.0f, .texture = 3);
+
+		G_WorldDraw(game, game->world);
+
+		R2f aframe = D_AnimationFrame(&animation);
+		D_Rect(&game->draw, 0, 0, .texture = animation.id, .uv = aframe, .flags = D_RECT_UV_ASPECT);
 
 		D_End(&game->draw, frame);
 

code/game/core.c

@@ -1,5 +1,18 @@
 // @Todo:  These should move to draw/core.c
 //
+internal void G_AssetNameHash(D_Context *draw, Str8 name, U32 id) {
+	D_AssetHash *result = M_ArenaPush(draw->arena, D_AssetHash);
+
+	U64 hash  = Str8_Hash(name);
+	U64 index = hash & (D_ASSET_HASH_COUNT - 1);
+
+	result->value = name;
+	result->hash  = hash;
+	result->id    = id;
+
+	SLL_Push(draw->lookup[index], result);
+}
+
 void G_ImagesLoad(G_State *game) {
 	M_TempScope(0, 0) {
 		D_Context *draw = &game->draw;
@@ -59,6 +72,9 @@ void G_ImagesLoad(G_State *game) {
 
 			white->name = S("_WHITE");
 
+			// This doesn't _really_ need one because its just zero and always will be zero
+			G_AssetNameHash(draw, white->name, 0);
+
 			white->image.width  = 2;
 			white->image.height = 2;
 			white->image.format = VK_FORMAT_R8G8B8A8_SRGB;
@@ -147,10 +163,11 @@ void G_ImagesLoad(G_State *game) {
 
 					Assert(offset <= staging->size);
 
-					draw->n_images += 1;
-
 					image->name = Str8_Copy(game->arena, Str8_RemoveAfterLast(it->basename, '.'));
 
+					G_AssetNameHash(draw, image->name, draw->n_images);
+
+					draw->n_images += 1;
 					printf("[Info] :: Loaded %.*s from %.*s\n", Sv(image->name), Sv(it->basename));
 
 					image->image.width  = w;
@@ -290,6 +307,22 @@ void G_PipelinesLoad(G_State *game) {
 	Vk_PipelineCreate(basic);
 }
 
+void G_AudioLoad(G_State *game) {
+	(void) game;
+
+	M_TempScope(0, 0) {
+		Str8 exe_path = FS_SystemPath(temp.arena, FS_SYSTEM_PATH_EXE);
+		Str8 path     = Sf(temp.arena, "%.*s/assets", Sv(exe_path));
+
+		FS_List assets = FS_PathList(temp.arena, path);
+
+		// @Incomplete: finish this
+
+		for (FS_Entry *it = assets.first; it != 0; it = it->next) {
+		}
+	}
+}
+
 void G_CalculateCamera(G_Camera *camera, F32 aspect) {
 	Mat4x4FInv proj = M4x4F_Perspective(camera->fov, aspect, camera->nearp, camera->farp);
 	Mat4x4FInv view = M4x4F_CameraView(camera->x, camera->y, camera->z, camera->p);

code/game/core.h

@@ -25,6 +25,7 @@ struct G_State {
 
 function void G_ImagesLoad(G_State *game);
 function void G_PipelinesLoad(G_State *game);
+function void G_AudioLoad(G_State *game);
 
 function void G_CalculateCamera(G_Camera *camera, F32 aspect);
 

code/game/impl/bandit.c

@@ -2,11 +2,9 @@
 #include "game/bandit.h"
 
 void UpdateBandit(F32 delta, Bandit *bandit, World *world) {
-  if(
+  if (
-    world->player.controls.shot 
+      world->player.controls.shot && AABB_Slab(world->player.pos, world->player.shotPos, bandit->collision) && bandit->currentArea == world->player.currentArea)
-    && AABB_Point(bandit->collision, world->player.shotPos) 
+  {
-    && bandit->currentArea == world->player.currentArea
-  ) {
     printf("You shot the bandit %*.s\n", Sv(bandit->name));
     bandit->health--;
   }

code/game/impl/world.c

@@ -5,6 +5,7 @@
 #include <SDL3/SDL_events.h>
 #include <SDL3/SDL_keycode.h>
 #include <SDL3/SDL_oldnames.h>
+#include "../map.h"
 
 void UpdateWorld(F32 delta, World *world)
 {
@@ -19,11 +20,9 @@ void UpdateNPCs(F32 delta, World *world)
   {
     NPC *npc = &world->npcs[i];
     UpdateNPC(delta, npc, world);
-    if(
+    if (
-      world->player.controls.shot 
+        world->player.controls.shot && AABB_Slab(world->player.pos, world->player.shotPos, npc->collision) && npc->currentArea == world->player.currentArea)
-      && AABB_Point(npc->collision, world->player.shotPos) 
+    {
-      && npc->currentArea == world->player.currentArea
-    ) {
       printf("You shot %*.s\n", Sv(world->npcs[i].name));
     }
   }
@@ -38,6 +37,11 @@ void ProcessEvents(SDL_Event *event, World *world)
 }
 
 void RenderWorld(World *world, D_Context *draw) {
+  World_Tile tileTypes[] = {dirt, middlePath, middlePathEdgeTop, middlePathEdgeRight, middlePathEdgeBottom, middlePathEdgeLeft, middlePathCornerTopLeft, middlePathCornerTopRight, middlePathCornerBottomRight, middlePathCornerTurnBottomLeft};
+  for (int i = 0; i < 4800; i++)
+  {
+    D_Rect(draw, (F32) (i % 96), (F32) (i / 96), .texture = tileTypes[map[i]].tile, .angle = (F32) tileTypes[map[i]].rotation);
+  }
   for(U32 i = 0; i < world->npcCount; i++) {
     NPC npc = world->npcs[i];
     if(npc.currentArea == world->player.currentArea) {
@@ -59,15 +63,17 @@ void G_WorldDraw(G_State *game, World *world) {
 
 	(void) world;
 
-	for (F32 y = -128; y < 128; y += 1.1f) {
+	U32 id     = D_ImageHandle(&game->draw, S("tile_dirt_0"));
-		for (F32 x = -128; x < 128; x += 1.1f) {
+	U32 alt_id = D_ImageHandle(&game->draw, S("tile_dirt_1"));
 
+	for (F32 y = -128; y < 128; y += 1.0f) {
+		for (F32 x = -128; x < 128; x += 1.0f) {
 			U32 ux = (U32) x;
 			U32 uy = (U32) y;
 
-			U32 tid = 15;
+			U32 tid = id;
 			if ((ux % 11) == 0 || ((uy % 7) == 0)) {
-				tid = 16;
+				tid = alt_id;
 			}
 
 			D_Rect(draw, x, y, .texture = tid);

code/game/map.h

@@ -0,0 +1,65 @@
+#include "world.h"
+
+
+World_Tile dirt = {.rotation=0,.collision=false,.tile=16};//0
+World_Tile middlePath = {.rotation=0,.collision=false,.tile=6};//1
+World_Tile middlePathEdgeTop = {.rotation=0,.collision=false,.tile=7};//2
+World_Tile middlePathEdgeRight = {.rotation=PI_F32/2,.collision=false,.tile=7};//3
+World_Tile middlePathEdgeBottom = {.rotation=PI_F32,.collision=false,.tile=7};//4
+World_Tile middlePathEdgeLeft = {.rotation=-PI_F32/2,.collision=false,.tile=7};//5
+World_Tile middlePathCornerTopLeft = {.rotation=0,.collision=false,.tile=5};//6
+World_Tile middlePathCornerTopRight = {.rotation=PI_F32/2,.collision=false,.tile=5};//7
+World_Tile middlePathCornerBottomRight = {.rotation=-PI_F32,.collision=false,.tile=5};//8
+World_Tile middlePathCornerTurnBottomLeft = {.rotation=-PI_F32/2,.collision=false,.tile=5};//9
+int map[] = {
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5,1,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+};

code/game/world.h

@@ -5,9 +5,22 @@
 
 // Areas are which
 typedef U32 World_Area;
-enum World_Area {
+enum World_Area
+{
   WORLD_AREA_OUTSIDE = (1 << 0),
   WORLD_AREA_SALOON = (1 << 1),
+  WORLD_PATH_MIDDLE_EDGE = (1 << 2),
+  WORLD_PATH_MIDDLE = (1 << 3),
+  WORLD_PATH_CORNER = (1 << 4),
+  WORLD_PATH_CORNER_EDGE = (1 << 5),
+};
+
+typedef struct World_Tile World_Tile;
+struct World_Tile
+{
+  World_Area tile;
+  double rotation;
+  bool collision;
 };
 
 typedef struct World World;
@@ -39,7 +52,7 @@ struct World {
 };
 
 function void UpdateWorld(F32 delta, World *world);
-function void RenderWorld(World *world, D_Context *drawContext );
+function void RenderWorld(World *world, D_Context *drawContext);
 function void ProcessEvents(SDL_Event *event, World *world);
 function void UpdateNPCs(F32 delta, World *world);
 function void UpdateNPC(F32 delta, NPC *npc, World *world);