Week14

滑鼠旋轉方塊

float angle=0;
void setup(){
  size(800, 600, P3D);
}

void draw(){
  background(255);
  pushMatrix();
    translate(width/2, height/2);
    rotateZ(angle/180.0);
    rect(0, 0, 100, 100);
  popMatrix();
}

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--;
}

賽車遊戲

PImage imgCar;

float angle =0,dx=0,dy=0,vel=1;

void setup(){

  size(800,600,P3D);

  imgCar = loadImage("car.png");

}

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);

    image(imgCar, -100,-100,200,200);

  popMatrix();

  dx=-vel*cos(angle);

  dy=-vel*sin(angle);

}

void mouseMoved(){

  int x=mouseX-pmouseX;

  int y=mouseY-pmouseY;

  if(x>0) angle+=1/40.0;

  if(x<0) angle-=1/40.0;

}

void keyPressed(){

  if(key=='l')angle++;

  if(key=='r')angle--;

  if(keyCode==UP)vel*=1.1;

  if(keyCode==DOWN)vel*=0.9;

}