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/interface/timer/ge_fps.c

@@ -0,0 +1,66 @@
+// ge_fps.c
+#include "ge_fps.h"
+
+// 初始化FPS控制器
+void ge_fps_init(ge_fps_controller_t* fps_ctrl, ge_u32_t target_fps,
+    ge_fps_get_us_func_t get_us, ge_fps_sleep_us_func_t sleep_us) {
+    fps_ctrl->target_fps = target_fps;
+    fps_ctrl->frame_duration = 1000 / target_fps;
+    fps_ctrl->last_frame_time = get_us();
+    fps_ctrl->frame_time = 0;
+    fps_ctrl->sleep_time = 0;
+    fps_ctrl->frame_count = 0;
+    fps_ctrl->fps = 0;
+    fps_ctrl->last_fps_time = fps_ctrl->last_frame_time;
+    fps_ctrl->call_get_us = get_us;
+    fps_ctrl->call_sleep_us = sleep_us;
+}
+
+// 帧开始
+void ge_fps_begin_frame(ge_fps_controller_t* fps_ctrl) {
+    fps_ctrl->last_frame_time = fps_ctrl->call_get_us();
+}
+
+// 帧结束
+void ge_fps_end_frame(ge_fps_controller_t* fps_ctrl) {
+    ge_u32_t current_time = fps_ctrl->call_get_us();
+    fps_ctrl->frame_time = current_time - fps_ctrl->last_frame_time;
+    
+    // 帧率自适应算法
+    if (fps_ctrl->frame_time < fps_ctrl->frame_duration) {
+        ge_u32_t sleep_time = fps_ctrl->frame_duration - fps_ctrl->frame_time;
+        
+        // 动态调整休眠精度
+        if (sleep_time > 2000) { // >2ms使用Sleep
+            fps_ctrl->call_sleep_us(sleep_time - 1000); // 提前1ms唤醒
+            current_time = fps_ctrl->call_get_us();
+            
+            // 剩余时间忙等待
+            while ((current_time - fps_ctrl->last_frame_time) < fps_ctrl->frame_duration) {
+                current_time = fps_ctrl->call_get_us();
+            }
+        } else {
+            // 短时间直接忙等待
+            while ((fps_ctrl->call_get_us() - fps_ctrl->last_frame_time) < fps_ctrl->frame_duration);
+        }
+    }
+    
+    // 更新FPS计数（同原逻辑）
+    fps_ctrl->frame_count++;
+    if (current_time - fps_ctrl->last_fps_time >= 1000000) {
+        fps_ctrl->fps = fps_ctrl->frame_count;
+        fps_ctrl->frame_count = 0;
+        fps_ctrl->last_fps_time = current_time;
+        
+        // 动态调整目标帧时间（±5%容差）
+        // ge_u32_t avg_frame_time = 1000000 / fps_ctrl->fps;
+        // if (avg_frame_time > fps_ctrl->frame_duration * 1.05f) {
+        //     fps_ctrl->frame_duration = avg_frame_time;
+        // } else if (avg_frame_time < fps_ctrl->frame_duration * 0.95f) {
+        //     fps_ctrl->frame_duration = GE_MAX(
+        //         fps_ctrl->target_fps * 1000, 
+        //         avg_frame_time
+        //     );
+        // }
+    }
+}

game_engine/interface/timer/ge_fps.h

@@ -0,0 +1,31 @@
+#ifndef __GE_FPS_H__
+#define __GE_FPS_H__
+
+#include <ge_common.h>
+struct ge_fps_controller;
+typedef struct ge_fps_controller ge_fps_controller_t;
+
+typedef ge_u32_t (*ge_fps_get_us_func_t)(void);
+typedef void (*ge_fps_sleep_us_func_t)(ge_u32_t us);
+
+void ge_fps_init(ge_fps_controller_t* fps_ctrl, ge_u32_t target_fps,
+    ge_fps_get_us_func_t get_ms, ge_fps_sleep_us_func_t sleep_ms);
+void ge_fps_begin_frame(ge_fps_controller_t* fps_ctrl);
+void ge_fps_end_frame(ge_fps_controller_t* fps_ctrl);
+
+// FPS控制器结构体
+struct ge_fps_controller {
+    ge_u32_t target_fps;        // 目标帧率
+    ge_u32_t frame_duration;    // 目标每帧时长(毫秒)
+    ge_u32_t last_frame_time;   // 上一帧开始时间
+    ge_u32_t frame_time;        // 当前帧耗时
+    ge_u32_t sleep_time;        // 需要休眠的时间
+    ge_u32_t frame_count;       // 帧计数器
+    ge_u32_t fps;               // 实际帧率
+    ge_u32_t last_fps_time;     // 上次计算FPS的时间
+
+    ge_fps_get_us_func_t call_get_us;
+    ge_fps_sleep_us_func_t call_sleep_us;
+};
+
+#endif // __GE_FPS_H__

game_engine/interface/timer/ge_timer.h

@@ -0,0 +1,23 @@
+#ifndef __GE_TIMER_H__
+#define __GE_TIMER_H__ 
+
+#include <ge_config.h>
+#include "ge_fps.h"
+
+typedef void (*ge_sleep_ms_func_t)(ge_u32_t);
+typedef ge_u32_t (*ge_get_ms_func_t)(void);
+
+typedef void (*ge_sleep_us_func_t)(ge_u32_t);
+typedef ge_u32_t (*ge_get_us_func_t)(void);
+
+typedef struct {
+    ge_sleep_ms_func_t sleep_ms;
+    ge_get_ms_func_t get_ms;
+
+    ge_sleep_us_func_t sleep_us;
+    ge_get_us_func_t get_us;
+    
+    ge_fps_controller_t fps_ctl;
+} ge_timer_t;
+
+#endif // __GE_TIMER_H__