Snake Game

2026-07-16 22:31:04 -07:00
parent 4a7867f22e
commit 03b7244fed
3 changed files with 353 additions and 0 deletions
@@ -0,0 +1,62 @@
+#pragma once
+
+#include "activities/Activity.h"
+
+class SnakeActivity final : public Activity {
+public:
+    explicit SnakeActivity(GfxRenderer& renderer, MappedInputManager& mappedInput)
+        : Activity("Snake", renderer, mappedInput) {}
+
+    void onEnter() override;
+    void onExit() override;
+    void loop() override;
+    bool skipLoopDelay() override { return true; }
+    void render(RenderLock&&) override;
+
+private:
+    enum class Dir { Up, Down, Left, Right };
+
+    static constexpr int BLOCK               = 18;
+    static constexpr int HEADER_H            = 34;
+    static constexpr int FOOTER_H            = 30;
+    static constexpr int MAX_SNAKE_LEN       = 2048;
+    static constexpr unsigned long TICK_START_MS = 170;
+    static constexpr unsigned long TICK_MIN_MS   = 80;
+    static constexpr unsigned long TICK_STEP_MS  = 6;
+    static constexpr int POINTS_PER_FOOD     = 10;
+    static constexpr int SPEEDUP_EVERY_POINTS = 50;
+
+    int screenW_ = 0;
+    int screenH_ = 0;
+    int cols_    = 0;
+    int rows_    = 0;
+    int fieldLeft_ = 0;
+    int fieldTop_  = 0;
+
+    int snakeX_[MAX_SNAKE_LEN];
+    int snakeY_[MAX_SNAKE_LEN];
+    int headIdx_ = 0;
+    int length_  = 0;
+
+    Dir dir_        = Dir::Right;
+    Dir pendingDir_ = Dir::Right;
+
+    int foodX_ = 0;
+    int foodY_ = 0;
+
+    int score_ = 0;
+    unsigned long tickInterval_ = TICK_START_MS;
+
+    bool gameOver_      = false;
+    bool won_           = false;
+    bool renderPending_ = false;
+
+    unsigned long lastMove_ = 0;
+
+    void resetGame();
+    void placeFood();
+    bool isSnakeCell(int x, int y) const;
+    void handleDirectionInput();
+    void updateGame();
+    void drawFooterLabels() const;
+};