week14

轉動方塊

PImage imgCar;
float angle = 0,dX=0,dY=0,vel=1;
void setup(){
  size(800,600,P3D);
  imCar=loadImage("car.jpg");
}
void draw(){
  background(255);
  for(int i=-1;i<=8;i++){
    for(int j=-1;j<=6;j++){
      rect(i*100+dX%100,j*100+dY%100,100,100);
    }
  }
  pushMatrix();
    translate(width/2,height/2);
    rotateZ(angle/180.0);
    rect(0,0,100,100);
   popMatrix();
   dX-=vel*cos(angle);
   dY-=vel*sin(angle);
}
void mouseMoved(){
  int x=mouseX-pmouseX;
  int y=mouseY-pmouseY;
  if(x>0)angle+=1;
  if(x<0)angle-=1;
}
void keyPressed(){
  if(key=='l')angle++;
  if(key=='r')angle--;
  if(keyCode==UP)vel*=1.1;
  if(keyCode=DOWN)vel*=0.9;
  println("vel:"+vel);
}