06160805的課堂筆記

2019互動技術概論week04

注意：
size(w,h); //頁面大小
line(x,y,x,y); //線
rect(x,y,w,h); //矩形
circle(x,y,r); //圓形
ellipse(x,y,w,h); //橢圓
fill(R,G,B); //在矩形,圓形...等裡面的顏色
background(R,G,B); //頁面背景的顏色



打開processing

改字體大小：文件→偏好設定→編輯器字體大小

程式碼

讓圓球左右移動

int ballX=300,ballY=300;

int vx=-2;

void setup(){

  size(700,400);

}

void draw(){

  background(255);

  ellipse(ballX,ballY,30,30);

  ballX+=vx;

  if(ballX<0)vx=+2; //球的位置到0時，就往右走

  if(ballX>700)vx=-2; //球的位置到700時，就往左走

}

讓球進行彈跳

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;

  vy+=0.98;

  if(ballX<0+15) vx=-vx*0.9;

  if(ballX>700-15) vx=-vx*0.9;

  if(ballY<0+15) vy=-vy*0.9;

  if(ballY>400-15) vy=-vy*0.9;

}

增加摩擦力，讓球碰到邊時，慢慢停止下來

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;

  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;

}

馬力歐進行上下跳動左右前進

PImage imgMario;

float marioX=100,marioY=100;

float marioVX=0,marioVY=0;

float vx=+2,vy=-10;

void setup(){

  size(700,400);

  imgMario=loadImage("123.jpg");

}

void draw(){

  background(255);

  rect(0,200,500,50);

  image(imgMario,marioX,marioY,100,100);

  marioX+=marioVX;

  marioY+=marioVY;

  if(marioY<=100)marioVY+=0.9;

  else marioY=100;

}

void keyPressed(){

  if(keyCode==RIGHT) marioX+=3;

  if(keyCode==LEFT)marioX-=3;

  if(keyCode==UP){

    marioVY=-15;

  }

}

馬力歐進行上下跳動左右前進，當放掉按鍵，馬力歐就進行煞車

PImage imgMario;

float marioX=100,marioY=100;

float marioVX=0,marioVY=0;

void setup(){

  size(700,400);

  imgMario=loadImage("123.jpg");

}

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){

    marioX+=3;

    softBrake=0;

  }

  else if(keyCode==LEFT){

    marioX-=3;

    softBrake=0;

  }

  else if(keyCode==UP){

    marioVY=-15;

  }

}