From 6621d248b8e2b6ead7fbfcd8470a87e3a175a3bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Wed, 12 May 2021 19:26:41 +0200
Subject: [PATCH] introduce basic asset system

---
 code/game/header/assets.h               | 37 ++++++-----
 code/game/header/utils/raylib_helpers.h | 10 +++
 code/game/source/assets.c               | 82 ++++++++++++++++++++++++-
 code/game/source/assets_list.c          |  5 ++
 code/game/source/platform_raylib.c      |  3 +
 5 files changed, 119 insertions(+), 18 deletions(-)
 create mode 100644 code/game/source/assets_list.c

diff --git a/code/game/header/assets.h b/code/game/header/assets.h
index 35966f8..f170be8 100644
--- a/code/game/header/assets.h
+++ b/code/game/header/assets.h
@@ -1,21 +1,28 @@
 #pragma once
 #include "system.h"
 
-typedef struct {
-    uint16_t id;
-    uint8_t kind;
-    char* filename;
-} asset_info;
+#define ASSET_INVALID 0xFF
 
-enum {
-    ASSET_KIND_IMAGE,
-    ASSET_KIND_SOUND,
-    ASSET_KIND_FORCE_8 = UINT8_MAX,
-};
-
-enum {
+typedef enum {
     ASSET_PLAYER,
-    ASSET_FORCE_16 = UINT16_MAX,
-};
+    ASSET_THING,
+    
+    MAX_ASSETS,
+    FORCE_ASSET_UINT16 = UINT16_MAX
+} asset_id;
 
-extern asset_info assets[];
+typedef enum {
+    AKIND_TEXTURE,
+    AKIND_SOUND,
+    
+    FORCE_AKIND_UINT8 = UINT8_MAX
+} asset_kind;
+
+int32_t assets_setup(void);
+void assets_destroy(void);
+
+uint16_t assets_find(asset_id id);
+
+asset_kind assets_get_kind(uint16_t id);
+void *assets_get_snd(uint16_t id);
+void *assets_get_tex(uint16_t id);
diff --git a/code/game/header/utils/raylib_helpers.h b/code/game/header/utils/raylib_helpers.h
index d65bf5d..ac6c2e0 100644
--- a/code/game/header/utils/raylib_helpers.h
+++ b/code/game/header/utils/raylib_helpers.h
@@ -52,4 +52,14 @@ void DrawRectangleEco(float posX, float posY, int width, int height, Color color
 static inline
 Image GetBlockImage(uint8_t id) {
     return *(Image*)blocks_get_img(id);
+}
+
+static inline
+Image GetSpriteImage(uint16_t id) {
+    return *(Image*)assets_get_tex(id);
+}
+
+static inline
+Sound GetSound(uint16_t id) {
+    return *(Sound*)assets_get_snd(id);
 }
\ No newline at end of file
diff --git a/code/game/source/assets.c b/code/game/source/assets.c
index b411c01..5092d3f 100644
--- a/code/game/source/assets.c
+++ b/code/game/source/assets.c
@@ -1,5 +1,81 @@
 #include "assets.h"
+#include "raylib.h"
 
-asset_info assets[] = {
-    {.id = ASSET_PLAYER, .kind = ASSET_KIND_IMAGE, .filename = "player.png"}
-};
+#define ASSETS_COUNT (sizeof(assets)/sizeof(asset))
+
+typedef struct {
+    asset_id id;
+    asset_kind kind;
+    
+    union {
+        Texture2D tex;
+        Sound snd;
+    };
+    
+    // NOTE(zaklaus): metadata
+} asset;
+
+#include "assets_list.c"
+
+int32_t assets_setup(void) {
+    for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+        asset *b = &assets[i];
+        
+        switch (b->kind) {
+            case AKIND_TEXTURE: {
+                // TODO(zaklaus): introduce texgen
+                Image img = GenImageColor(1, 1, RAYWHITE);
+                b->tex = LoadTextureFromImage(img);
+                UnloadImage(img);
+            }break;
+            
+            case AKIND_SOUND: {
+                // TODO(zaklaus): soundgen
+            }break;
+            
+            default: {
+                // TODO(zaklaus): assert
+            }break;
+        }
+    }
+    return 0;
+}
+
+void assets_destroy(void) {
+    for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+        switch (assets[i].kind) {
+            case AKIND_TEXTURE: {
+                UnloadTexture(assets[i].tex);
+            }break;
+            
+            case AKIND_SOUND: {
+                // TODO(zaklaus): soundgen
+            }break;
+            
+            default: {
+                // TODO(zaklaus): assert
+            }break;
+        }
+        
+    }
+}
+
+uint16_t assets_find(asset_id id) {
+    for (uint32_t i=0; i<ASSETS_COUNT; i++) {
+        if (assets[i].id == id)
+            return i;
+    }
+    return ASSET_INVALID;
+}
+
+asset_kind assets_get_kind(uint16_t id) {
+    return assets[id].kind;
+}
+
+void *assets_get_snd(uint16_t id) {
+    return (void*)&assets[id].snd;;
+}
+
+void *assets_get_tex(uint16_t id) {
+    return (void*)&assets[id].tex;
+}
diff --git a/code/game/source/assets_list.c b/code/game/source/assets_list.c
new file mode 100644
index 0000000..aedec5a
--- /dev/null
+++ b/code/game/source/assets_list.c
@@ -0,0 +1,5 @@
+#include "assets.h"
+
+static asset assets[] = {
+    
+};
diff --git a/code/game/source/platform_raylib.c b/code/game/source/platform_raylib.c
index 9de9dd7..c262659 100644
--- a/code/game/source/platform_raylib.c
+++ b/code/game/source/platform_raylib.c
@@ -8,6 +8,7 @@
 #include "camera.h"
 #include "math.h"
 #include "world/blocks.h"
+#include "assets.h"
 #include "utils/raylib_helpers.h"
 
 uint16_t screenWidth = 1600;
@@ -44,10 +45,12 @@ void platform_init() {
     EndDrawing();
     
     blocks_setup();
+    assets_setup();
 }
 
 void platform_shutdown() {
     blocks_destroy();
+    assets_destroy();
     CloseWindow();
 }