feat(engine): 重构游戏引擎核心逻辑

- 重新设计了引擎的初始化和运行流程
- 引入了实体组件系统(ECS)和物理系统
- 优化了渲染系统和输入系统
- 移除了不必要的资源管理系统
- 调整了日志系统的实现

game_engine/ecs/ge_entity.h

@@ -0,0 +1,64 @@
+#ifndef __GE_ENTIRY_H__
+#define __GE_ENTIRY_H__
+
+#include <ge_core.h>
+#include <utils/ge_vector2i.h>
+#include "ge_render_component.h"
+#include "ge_physics_component.h"
+
+#include <stdint.h>
+typedef uint16_t ge_ecs_id_t; // 支持65536个实体
+#define GE_ECS_MAX 128
+
+typedef enum {
+    GE_COMPONENT_ACVIVE            = 1 << 0,
+    GE_COMPONENT_POSITION          = 1 << 1,
+    GE_COMPONENT_TRANSFORM         = 1 << 2, // TODO not implimented
+    GE_COMPONENT_RENDERABLE        = 1 << 3,
+    GE_COMPONENT_PHYSICS_BODY      = 1 << 4, // TODO not implimented
+    GE_COMPONENT_COLLIDER          = 1 << 5, // TODO not implimented
+    GE_COMPONENT_TIMED_LIFE        = 1 << 6, // TODO not implimented
+} ge_ecs_mask_t;
+
+#define GE_RENDERABLE_MASK  \
+    (GE_COMPONENT_POSITION | GE_COMPONENT_RENDERABLE)
+#define GE_PHYSICS_MASK \
+    (GE_COMPONENT_POSITION | GE_COMPONENT_PHYSICS_BODY)
+
+typedef struct ge_entity {
+    ge_ecs_id_t id;
+    ge_ecs_mask_t component_mask;
+    ge_vector2i_t position;
+    ge_render_component_t renderable;
+    ge_physics_component_t physics_body;
+} ge_entity_t;
+
+typedef struct {
+    // TODO static storage to dynamic storage
+    ge_entity_t entities[GE_ECS_MAX];
+    ge_ecs_id_t count;
+} ge_ecs_storage_t;
+
+typedef struct ge_ecs {
+    ge_ecs_storage_t storage;
+} ge_ecs_t;
+
+
+static inline ge_ecs_id_t ge_ecs_add_entity(ge_ecs_t* ecs, ge_entity_t** entity) {
+    ge_ecs_id_t id = ++ecs->storage.count;
+    if (id >= GE_ECS_MAX) {
+        return 0;
+    }
+    // TODO squeze the data
+    if (entity != NULL) *entity = &ecs->storage.entities[id];
+    return id;
+}
+
+static inline ge_entity_t* ge_ecs_get_entity(ge_ecs_t* ecs, ge_ecs_id_t id) {
+    if(id >= ecs->storage.count) {
+        return NULL;
+    }
+    return &ecs->storage.entities[id];
+}
+
+#endif // __GE_ENTIRY_H__