week05

眼睛會跟著滑鼠指標走

可以讓眼睛跟滑鼠連著一條線

void setup(){

  size(800,800);

}

void draw(){

  background(128);

  strokeWeight(20);

  ellipse(100,200,180,360);

  ellipse(300,200,180,360);

  

  ellipse(100,200,10,10);

  ellipse(300,200,10,10);

  line(mouseX,mouseY,100,200);

  line(mouseX,mouseY,300,200);

}

void setup(){

  size(800,800);

}

void draw(){

  background(128);

  strokeWeight(20);

  ellipse(100,200,180,360);

  ellipse(300,200,180,360);

  

  //ellipse(100,200,10,10);

  //ellipse(300,200,10,10);

  //line(mouseX,mouseY,100,200);

  //line(mouseX,mouseY,300,200);

  float angle1 = atan2((mouseY-200)/2 , mouseX-300);

  float newX1=300+100*cos(angle1)/2;

  float newY1=200+200*sin(angle1)/2;

  ellipse(newX1,newY1,10,10);

  float angle2 = atan2((mouseY-200)/2,mouseX-100);

  float newX2=100+100*cos(angle2)/2;

  float newY2=200+200*sin(angle2)/2;

  ellipse(newX2,newY2,10,10);

}


第二個遊戲
製作射砲砲遊戲



先做出一個砲彈



橘色是身體的本體
線會跟著滑鼠方向連出一條線

void setup(){
  size(400,800);
}
float ballX=200, ballY=600;
float ballVX=0, ballVY=0;
float angle=0;
void draw(){
  background(0,128,0);
  fill(#FA9703); ellipse(200,600,100,100);
 line(mouseX,mouseY,200,600);
 fill(#F9FA03); ellipse(ballX,ballY,30,30);
 angle = atan2(mouseY-600,mouseX-200);

 ballX+=ballVX;
 ballY+=ballVY;
}
void mouseMoved(){
  ballX=200+50*cos(angle);
  ballY=600+50*sin(angle);
}
void mousePressed(){
  ballVX=cos(angle);
  ballVY=sin(angle);
}




黃色的泡泡會射出去
void setup(){
  size(400,800);
}
float [] ballX=new float[10];
float [] ballY=new float[10];
float [] ballVX=new float[10];
float [] ballVY=new float[10];
float [] angle=new float[10];
int now=0;
void draw(){
  background(0,128,0);
  fill(#FA9703); ellipse(200,600,100,100);
  for(int i=0;i<10;i++){
    fill(#F9FA03); ellipse(ballX[i],ballY[i],30,30);
    ballX[i]+=ballVX[i]; ballY[i]+=ballVY[i];
  }
  angle[now] = atan2(mouseY-600,mouseX-200);
}
void mouseMoved(){
  ballX[now]=200+50*cos(angle[now]);
  ballY[now]=600+50*sin(angle[now]);
}
void mousePressed(){
  ballVX[now]=cos(angle[now]);
  ballVY[now]=sin(angle[now]);
}