Added a dynamic array.

src/display/scene.c

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2021 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "scene.h"
+
+void sceneInit(scene_t *scene) {
+  scene->itemCount = 0;
+
+  cameraLookAt(&scene->camera, 3,3,3, 0,0,0);
+  cameraPerspective(&scene->camera, 75, 16.0f/9.0f, 0.01f, 100.0f);
+}
+
+sceneitem_t * sceneAdd(scene_t *scene) {
+  sceneitem_t *item = scene->items + scene->itemCount;
+  scene->itemCount++;
+  return item;
+}
+
+void sceneUpdate(scene_t *scene, engine_t *engine) {
+  int32_t i;
+  sceneitem_t *item;
+
+  for(i = 0; i < scene->itemCount; i++) {
+    item = scene->items + i;
+    if(item->onUpdate == NULL) continue;
+    item->onUpdate(scene, i, engine);
+  }
+}
+
+void sceneRender(scene_t *scene, engine_t *engine, shader_t *shader) {
+  int32_t i;
+  sceneitem_t *item;
+
+  shaderUse(shader);
+  shaderUseCamera(shader, &scene->camera);
+
+  for(i = 0; i < scene->itemCount; i++) {
+    item = scene->items + i;
+    if(item->onRender == NULL) continue;
+    item->onRender(scene, i, engine);
+  }
+}
+
+void sceneDispose(scene_t *scene) {
+  int32_t i;
+  sceneitem_t *item;
+
+  for(i = 0; i < scene->itemCount; i++) {
+    item = scene->items + i;
+    if(item->onDispose == NULL) continue;
+    item->onDispose(scene, i, NULL);
+  }
+}