validate worldgen data

code/game/src/gen/texgen.c

@@ -14,6 +14,13 @@ Texture2D LoadImageEco(const char *name) {
 
 Texture2D texgen_build_sprite(asset_id id) {
     switch (id) {
+        case ASSET_EMPTY: {
+            Image img = GenImageColor(1, 1, PINK);
+            Texture2D tex = LoadTextureFromImage(img);
+            UnloadImage(img);
+            return tex;
+        }break;
+        
         case ASSET_DEMO_ICEMAKER: return LoadImageEco("demo_icemaker");
         
         // NOTE(zaklaus): blocks
@@ -41,6 +48,4 @@ Texture2D texgen_build_sprite(asset_id id) {
             return tex;
         }break;
     }
-    
-    ZPL_PANIC("unreachable code");
 }

code/game/src/world/blocks_list.c

@@ -6,7 +6,7 @@
 }
 
 static block blocks[] = {
-    BLOCK(ASSET_EMPTY, 0, ' ', .drag = 1.0f, .friction = 1.0f),
+    BLOCK(ASSET_EMPTY, 0, 'E'),
     BLOCK(ASSET_GROUND, 0, '.', .drag = 1.0f, .friction = 1.0f),
     BLOCK(ASSET_DIRT, 0, ',', .drag = 2.1f , .friction = 1.0f),
     BLOCK(ASSET_WALL, BLOCK_FLAG_COLLISION, '#', .drag = 1.0f , .friction = 1.0f, .bounce = 1.0f),

code/game/src/world/world.c

@@ -193,7 +193,14 @@ int32_t world_init(int32_t seed, uint16_t chunk_size, uint16_t chunk_amount) {
     int32_t world_build_status = worldgen_test(&world);
     ZPL_ASSERT(world_build_status >= 0);
     
-    for (int i = 0; i < world.chunk_amount * world.chunk_amount; ++i) {
+    for (int i = 0; i < zpl_square(world.dim); ++i) {
+        if (world.data[i] == 0) {
+            ZPL_PANIC("Worldgen failure! Block %d is unset!\n", i);
+            return -1;
+        }
+    }
+    
+    for (int i = 0; i < zpl_square(world.chunk_amount); ++i) {
         ecs_entity_t e = ecs_new(world.ecs, 0);
         ecs_set(world.ecs, e, Classify, {.id = EKIND_CHUNK });
         Chunk *chunk = ecs_get_mut(world.ecs, e, Chunk, NULL);