温 week12

 int cityWidth = 800;

int buildingWidth = 40;
int buildingHeightMin = 50;
int buildingHeightMax = 200;
int roadHeight = 20;
int carSize = 30;
float carSpeed = 2.0;
float carX = 0;

void setup() {
  size(800, 400);
}

void draw() {
  background(220);
  
  // 绘制建筑物
  drawBuildings();
  
  // 绘制道路
  drawRoad();
  
  // 移动车辆
  moveCar();
  
  // 绘制车辆
  drawCar(carX, height - roadHeight - carSize);
}

void drawBuildings() {
  fill(150);
  for (int x = 0; x < cityWidth; x += buildingWidth + 20) {
    int buildingHeight = (int)random(buildingHeightMin, buildingHeightMax);
    rect(x, height - buildingHeight - roadHeight, buildingWidth, buildingHeight);
  }
}

void drawRoad() {
  fill(100);
  rect(0, height - roadHeight, cityWidth, roadHeight);
}

void drawCar(float x, float y) {
  fill(255, 0, 0);
  ellipse(x, y, carSize, carSize);
}

void moveCar() {
  carX += carSpeed;
  if (carX > width) {
    carX = -carSize;
  }
}