week04

摩擦力跳動的球

float ballX=300,ballY=300;
float vx=-2, vy=-10;
void setup(){
  size(700,400);
}
void draw(){
  background(255);
  ellipse(ballX,ballY,30,30);
  ballX += vx;
  ballY += vy;
  println(vy);
  vy+=0.98;
  if(ballX<0+15)   vx = -vx*0.9;
  if(ballX>600-15) vx = -vx*0.9;
  if(ballY<0+15)   vy = -vy*0.9;
  if(ballY>400-15) vy = -vy*0.9;
}



float ballX=300,ballY=300;
float vx=-2, vy=-10;
void setup(){
  size(700,400);
}
void draw(){
  background(255);
  ellipse(ballX,ballY,30,30);
  ballX += vx;
  ballY += vy;
  println(vy);
  vy+=0.98;
  if(ballX<0+15)   vx = -vx*0.9;
  if(ballX>600-15) vx = -vx*0.9;
  if(ballY<0+15)   vy = -vy*0.9;
  if(ballY>400-15){
    vy=-vy*0.9;
    vx=vx*0.9;
    
    ballY=400-15;
  }
  vy+=0.98;
}



馬力歐
左右滑動+跳

PImage imgMario;
float marioX=100 , marioY=100;
float marioVX=0 , marioVY=0;
void setup(){
  size(500,500);
  imgMario = loadImage("mario1.png");
}
void draw(){
  background(255);
  rect(0,200,500,50);
  image(imgMario,marioX,marioY,100,100);
  marioX += marioVX;
  marioY += marioVY;
  if(softBrake==1) marioVX*=0.9;
  if(marioY<=100) marioVY += 0.9;
  else marioY=100;
}
int softBrake=0;
void keyReleased(){
  if(keyCode==RIGHT) softBrake=1;
  if(keyCode==LEFT) softBrake=1;
}
void keyPressed(){
  if(keyCode==RIGHT){
    marioVX=3;
    softBrake=0;
  }else if(keyCode==LEFT){
    marioVX=-3;
    softBrake=0;
  }else if(keyCode==UP){
    marioVY= -15;
  }  
}