week 14

憤怒鳥

PImage imgBird;

void setup()

{

  size(500,400);

  imgBird=loadImage("bird.png");

  imageMode(CENTER);

}

float birdX=100,birdY=300,oldX,oldY,vx=0,vy=0;

boolean bMoving=false;

void draw()

{

  background(255);

  image(imgBird,birdX,birdY,100,100);

  if(bMoving)line(mouseX,mouseY,oldX,oldY);

  birdX+= vx; birdY+=vy;

  if(birdX>500-50 || birdX<50)vx=-vx;

  if(birdY>500-50 || birdY<50)vy=-vy;

}

void mouseReleased()

{

  bMoving=false;

  vx=(oldX-mouseX)/10;

  vy=(oldY-mouseY)/10;

}

void mousePressed()

{

  if(dist(mouseX,mouseY,birdX,birdY)<50)

  {

    bMoving=true;

    oldX=birdX;

    oldY=birdY;

  }

}

void mouseDragged()

{

  if(bMoving)

  {

    birdX=mouseX; birdY=mouseY;

  }

}