Added animations

Added new assets for the player
Added lookups for assets
Initial sound testing
Re-enabled temp world drawing

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) {
-				rect->w = opts->scale * ((F32) image->width / (F32) image->height);
-				rect->h = opts->scale;
-			}
-			else {
-				rect->w = opts->scale;
-				rect->h = opts->scale * ((F32) image->height / (F32) image->width);
+			F32 width  = cast(F32) image->width;
+			F32 height = cast(F32) image->height;
+
+			if (opts->flags & D_RECT_UV_ASPECT) {
+				width  *= (opts->uv.max.x - opts->uv.min.x);
+				height *= (opts->uv.max.y - opts->uv.min.y);
 			}
+
+			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;