128 lines
3.2 KiB
Plaintext
128 lines
3.2 KiB
Plaintext
/**
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* Raylib实现的生命游戏：
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* 使用鼠标设置初始状态，回车：开始演化（S：单步演化）， R:复位
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* 生命游戏，又称康威生命游戏，是英国数学家约翰·何顿·康威在1970年发明的细胞自动机
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*/
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#include <raylib.h>
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#include <string>
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class LifeGame {
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public:
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LifeGame(int fps = 10, std::string title = "Life Game") {
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InitWindow(width, height, title.c_str());
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SetTargetFPS(fps);
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}
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~LifeGame() { CloseWindow(); }
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void run() {
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while (!WindowShouldClose()) {
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processKeyEvt(); // 处理键盘
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processMouseEvt(); // 处理鼠标
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BeginDrawing();
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drawFrame(); // 绘制当前帧
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EndDrawing();
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updateCellStates(); // 更新细胞状态
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}
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}
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private:
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//
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// @brief 处理键盘事件
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//
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void processKeyEvt() {
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if (IsKeyPressed(KEY_ENTER)) { // 回车-运行
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running = true;
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}
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if (IsKeyPressed(KEY_R)) { // R - 复位
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running = false;
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clearStates();
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}
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if (IsKeyPressed(KEY_S)) { // S - 单步执行
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updateCellStates(true);
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}
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}
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//
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// @brief 处理鼠标事件：单击改变颜色
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//
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void processMouseEvt() {
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if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
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if (!running) {
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Vector2 vec = GetMousePosition();
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int x = vec.x / cell;
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int y = vec.y / cell;
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state[state_index][x + 1][y + 1] = (state[state_index][x + 1][y + 1] == 1) ? 0 : 1;
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}
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}
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}
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//
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// @brief 绘制当前帧
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//
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void drawFrame() {
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for (int i = 0; i < 60; i++) {
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for (int j = 0; j < 40; j++) {
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Color c = state[state_index][i + 1][j + 1] ? ORANGE : DARKGRAY;
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DrawRectangle(cell * i, cell * j, cell, cell, c);
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DrawRectangleLines(cell * i, cell * j, cell, cell, GREEN);
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}
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}
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}
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//
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// @brief 更新细胞存活状态
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//
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void updateCellStates(bool force = false) {
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if (!force) {
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if (!running) return; // 没有运行，直接返回
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}
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int last = state_index;
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state_index = last == 1 ? 0 : 1;
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for (int i = 1; i <= cell_col; i++) {
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for (int j = 1; j <= cell_row; j++) {
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int sum = state[last][i - 1][j - 1] + state[last][i - 1][j] + state[last][i - 1][j + 1] +
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state[last][i][j - 1] + state[last][i][j + 1] + state[last][i + 1][j - 1] + state[last][i + 1][j] +
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state[last][i + 1][j + 1];
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if (state[last][i][j]) {
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state[state_index][i][j] = (sum < 2 || sum > 3) ? 0 : 1;
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} else {
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state[state_index][i][j] = (sum == 3) ? 1 : 0;
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}
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}
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}
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}
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//
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// @brief 清除状态
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//
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void clearStates() {
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state_index = 0;
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for (int i = 1; i <= cell_col; i++) {
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for (int j = 1; j <= cell_row; j++) {
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state[state_index][i][j] = 0;
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}
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}
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}
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private:
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static constexpr float width = 1200;
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static constexpr float height = 800;
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static constexpr float cell = 25;
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static constexpr int cell_col = width / cell;
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static constexpr int cell_row = height / cell;
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char state[2][cell_col + 2][cell_row + 2] = {0};
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int state_index = 0;
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bool running = false;
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};
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int main(void) {
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LifeGame game;
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game.run();
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return 0;
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} |