Add inventory.

src/scene/scene.c

@@ -0,0 +1,84 @@
+// Copyright (c) 2026 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "scene.h"
+#include "assert/assert.h"
+#include "util/string.h"
+
+const scene_t SCENES[] = {
+};
+
+uint_fast8_t SCENE_CURRENT = 0xFF;
+
+errorret_t sceneInit(void) {
+  // Initialize the scene subsystem here
+  errorOk();
+}
+
+void sceneUpdate(void) {
+  const scene_t *current = sceneGetCurrent();
+  if(current && current->update) {
+    current->update();
+  }
+}
+
+void sceneRender(void) {
+  const scene_t *current = sceneGetCurrent();
+
+  if(current && current->render) {
+    current->render();
+  }
+}
+
+void sceneDispose(void) {
+  const scene_t *current = sceneGetCurrent();
+
+  if(current && current->dispose) {
+    current->dispose();
+  }
+}
+
+errorret_t sceneSet(const scene_t *scene) {
+  sceneDispose();
+
+  if(scene) {
+    SCENE_CURRENT = (uint_fast8_t)(scene - SCENES);
+    
+    assertTrue(
+      SCENE_CURRENT < sizeof(SCENES) / sizeof(scene_t),
+      "Invalid scene index."
+    );
+
+    if(scene->init) {
+      errorret_t err = scene->init();
+      if(err.code != ERROR_OK) SCENE_CURRENT = 0xFF;
+      errorChain(err);
+    }
+  } else {
+    SCENE_CURRENT = 0xFF;
+  }
+
+  errorOk();
+}
+
+const scene_t* sceneGetCurrent(void) {
+  if(SCENE_CURRENT == 0xFF) return NULL;
+
+  assertTrue(
+    SCENE_CURRENT < sizeof(SCENES) / sizeof(scene_t),
+    "Invalid current scene index."
+  );
+
+  return &SCENES[SCENE_CURRENT];
+}
+
+const scene_t* sceneGetByName(const char_t *name) {
+  for(uint_fast8_t i = 0; i < sizeof(SCENES) / sizeof(scene_t); i++) {
+    if(stringCompare(SCENES[i].name, name) == 0) {
+      return &SCENES[i];
+    }
+  }
+  return NULL;
+}