【006期】游戏的开始和结束界面，得分和生命值及其游戏逻辑。

核心代码


int score;
int lives;boolean gameOver;
void draw() {background(255);if (!gameOver) {/*游戏中的其他所有逻辑写在此处*/displayScoreAndLives(); // 显示得分和生命值} else {displayGameOverScreen(); // 显示游戏结束画面}
}
void displayScoreAndLives() {fill(0);textAlign(LEFT);textSize(12);text("Score: " + score, 10, 20);text("Lives: " + lives, 10, 35);
}void displayGameOverScreen() {textAlign(CENTER);textSize(32);text("Game Over", width/2, height/2);textSize(16);text("Final Score: " + score, width/2, height/2 + 25);
}void restartGame() {score = 0;lives = 3;gameOver = false;//各项属性值.clear();
}

这个判断距离的函数非常好，值得收藏

  boolean isUnderMouse(float mx, float my) {return mx >= x && mx <= x + tileWidth && my >= y && my <= y + tileHeight;}

下面是一个简单的黑白格游戏的Processing代码示例。游戏中会有黑色的格子从屏幕顶端落下，玩家需要点击它们。如果错过了黑色格子，玩家的生命值会减少。当生命值为零时，游戏结束，并显示最终得分。

ArrayList<Tile> tiles;
int score;
int lives;
final int tileWidth = 50;
final int tileHeight = 20;
boolean gameOver;void setup() {size(200, 400);tiles = new ArrayList<Tile>();score = 0;lives = 3;gameOver = false;// 每秒生成一个黑色格子frameRate(60);
}void draw() {background(255);if (!gameOver) {handleTiles(); // 处理格子的移动和生命值displayScoreAndLives(); // 显示得分和生命值} else {displayGameOverScreen(); // 显示游戏结束画面}
}void mouseClicked() {if (!gameOver) {for (Tile tile : tiles) {if (tile.isUnderMouse(mouseX, mouseY)) {score++;tile.clicked = true;break;}}} else {// 点击屏幕重新开始游戏restartGame();}
}void handleTiles() {// 每60帧添加一个新的黑色格子if (frameCount % 60 == 0) {tiles.add(new Tile(int(random(width/tileWidth)) * tileWidth, -tileHeight));}// 更新和渲染每个格子for (int i = tiles.size()-1; i >= 0; i--) {Tile tile = tiles.get(i);tile.update();if (!tile.clicked && tile.y > height) {lives--;tiles.remove(i);} else if (tile.clicked || tile.y > height) {tiles.remove(i);}if (lives <= 0) {gameOver = true;}}
}void displayScoreAndLives() {fill(0);textAlign(LEFT);textSize(12);text("Score: " + score, 10, 20);text("Lives: " + lives, 10, 35);
}void displayGameOverScreen() {textAlign(CENTER);textSize(32);text("Game Over", width/2, height/2);textSize(16);text("Final Score: " + score, width/2, height/2 + 25);
}void restartGame() {score = 0;lives = 3;gameOver = false;tiles.clear();
}class Tile {float x, y;boolean clicked = false;Tile(float x, float y) {this.x = x;this.y = y;}void update() {y += 2; // 格子下落速度if (!clicked) {fill(0); // 未被点击为黑色} else {fill(100); // 被点击后变为灰色}rect(x, y, tileWidth, tileHeight);}boolean isUnderMouse(float mx, float my) {return mx >= x && mx <= x + tileWidth && my >= y && my <= y + tileHeight;}
}