fix: .gitignore + add 44 language JSON files

Engine/Rendering/camera_controller.h

@@ -0,0 +1,44 @@
+#pragma once
+
+// ============================================================================
+// camera_controller.h - 增强相机控制器（飞行 / 步行模式）
+// ============================================================================
+
+#include "camera.h"
+#include "../ASM/math_c_fallback.h"
+
+typedef enum {
+    CAMERA_MODE_FLY,
+    CAMERA_MODE_WALK,
+} CameraMode;
+
+typedef struct {
+    Camera* camera;
+    CameraMode mode;
+    float move_speed;
+    float mouse_sensitivity;
+    float height_offset; // 步行模式眼睛离地面高度
+    float pitch_min;
+    float pitch_max;
+    float yaw;
+    float pitch;
+    float (*ground_height_fn)(float x, float z, void* user);
+    void* ground_user;
+} CameraController;
+
+CameraController camera_controller_create(Camera* camera);
+
+// 更新 yaw/pitch，鼠标输入以 delta 像素为单位
+void camera_controller_look(CameraController* ctrl, float delta_x, float delta_y);
+
+// 移动：dir 为本地空间方向 (x=右, y=上, z=前)
+void camera_controller_move(CameraController* ctrl, Vec3 dir, float dt);
+
+// 设置地形高度采样回调
+void camera_controller_set_ground_callback(CameraController* ctrl, float (*get_height)(float x, float z, void* user), void* user);
+
+// 切换模式
+void camera_controller_set_mode(CameraController* ctrl, CameraMode mode);
+
+// 每帧应用约束（如步行贴地）
+void camera_controller_update(CameraController* ctrl, float dt);