带宽测试

src/pingpong_game.h

@@ -3,9 +3,34 @@
 
 #include <godot_cpp/classes/node2d.hpp>
 #include <godot_cpp/classes/label.hpp>
+#include <godot_cpp/classes/input_event.hpp>
 
 namespace godot {
 
+class PingPongBall;
+
+// ═══════════════════════════════════════════════════════
+// 视觉常量 — 以后替换素材时删除本段
+// (颜色值定义在 pingpong_game.cpp 中)
+// ═══════════════════════════════════════════════════════
+static constexpr float FIELD_INSET = 15.0f;
+static constexpr float CENTER_LINE_DASH = 20.0f;
+static constexpr float CENTER_LINE_GAP = 12.0f;
+
+// 游戏状态
+enum GameState {
+    WAITING,
+    COUNTDOWN,
+    PLAYING,
+    SCORED,
+    GAME_OVER
+};
+
+// 倒计时参数
+static constexpr float COUNTDOWN_INTERVAL = 0.75f;
+static constexpr int COUNTDOWN_START = 3;
+static constexpr float SCORED_PAUSE = 1.2f;
+
 class PingPongGame : public Node2D {
     GDCLASS(PingPongGame, Node2D)
 
@@ -14,10 +39,20 @@ private:
     int right_score = 0;
     int max_score = 5;
 
+    // 状态机
+    GameState state = WAITING;
+    float state_timer = 0.0f;
+    int countdown_number = COUNTDOWN_START;
+
+    // 子节点引用
     Label *left_score_label = nullptr;
     Label *right_score_label = nullptr;
+    Label *message_label = nullptr;
+    PingPongBall *ball = nullptr;
 
     void update_score_display();
+    void set_state(GameState p_state);
+    void show_message(const String &p_text);
 
 protected:
     static void _bind_methods();
@@ -27,12 +62,16 @@ public:
     ~PingPongGame();
 
     void _ready() override;
+    void _process(double delta) override;
+    void _draw() override;
+    void _input(const Ref<InputEvent> &event) override;
 
     // 得分处理
     void _on_ball_scored(int which);
 
     // 重置整局游戏
     void reset_game();
+    void start_countdown();
 
     // 属性 getter/setter
     void set_left_score(int p_score);