17/09/30 德宇的筆記Week03

目標一:做出angry bird遊戲

1.拖曳滑鼠使產生物理慣性（繪圖模擬）

程式碼:

void setup()

{

  size(800,600);  

}

float HookX=400,HookY=300;   //Hook的初始位子

float HookVX=0,HookVY=0;     //Hook的初始速度

void draw()

{

  background(255);    

  ellipse(HookX,HookY, 50,50);  //畫一個半徑50的圓

  line(HookX,HookY,400,300);  //畫一條線

  HookX+=HookVX;

  HookY+=HookVY;

}

void mouseDragged()  //拖曳滑鼠

{ 

  HookX=mouseX;

  HookY=mouseY;

}

void mouseReleased()  //放開滑鼠

{ 

  HookVX=(400-mouseX)/100.0;  //X軸位移方向

  HookVY=(300-mouseY)/100.0;  //Y軸位移方向

}

2拖曳滑鼠射擊讓豬豬消失

程式碼:

PImage imgbird,imgpig; 

void setup()

{

  size(800,600);

  imgbird=loadImage("bird.png");        

  imgpig=loadImage("pig.png");   

  imageMode(CENTER);  

}

float BirdX=400,BirdY=300;

float BirdVX=0,BirdVY=0;

float BirdAX=0,BirdAY=0;

float PigX=700,PigY=100;

boolean PigAlive=true;

void draw()

{

  background(255);

  if(PigAlive)image(imgpig,PigX,PigY,100,100);     

  image(imgbird,BirdX,BirdY,100,100);

  if(dist(PigX,PigY,BirdX,BirdY)<100)

  {

    PigAlive=false;

  } 

  line(BirdX,BirdY,400,300);

  BirdX+=BirdVX;

  BirdY+=BirdVY;

  BirdVX+=BirdAX;

  BirdVY+=BirdAY;

}

void mouseDragged()

{

  BirdX=mouseX;

  BirdY=mouseY;

  BirdVX=BirdVY=BirdAX=BirdAY=0;  //速度等於加速度

}

void mouseReleased()

{

  BirdVX=(400-mouseX)/10.0;

  BirdVY=(300-mouseY)/10.0;

  BirdAY=0.98;  //加速度9.8

}

3.設定邊界，讓憤怒鳥不會視窗外

程式碼:

PImage imgbird,imgpig; 

void setup()

{

  size(800,600);

  imgbird=loadImage("bird.png");        

  imgpig=loadImage("pig.png");   

  imageMode(CENTER);  

}

float BirdX=400,BirdY=300;

float BirdVX=0,BirdVY=0;

float BirdAX=0,BirdAY=0;

float PigX=700,PigY=100;

boolean PigAlive=true;

void draw()

{

  background(255);

  if(PigAlive)image(imgpig,PigX,PigY,100,100);     

  image(imgbird,BirdX,BirdY,100,100);

  if(dist(PigX,PigY,BirdX,BirdY)<100)

  {

    PigAlive=false;

  } 

  line(BirdX,BirdY,400,300);

  

  BirdX+=BirdVX;

  BirdY+=BirdVY;

  if(BirdX<50)  //設定邊界

  {

    BirdX=50;BirdVX=-BirdVX;

  }

  if(BirdX>width-50)

  {

    BirdX=width-50;BirdVX=-BirdVX;

  }

  if(BirdY<50)

  {

    BirdY=50;BirdVY=-BirdVY;

  }

  if(BirdY>height-50)

  {

    BirdY=height-50;BirdVY=-BirdVY;

  }

  

  BirdVX+=BirdAX;

  BirdVY+=BirdAY;

  BirdVX*=0.997;

  BirdVY*=0.997; 

}

void mouseDragged()

{

  BirdX=mouseX;

  BirdY=mouseY;

  BirdVX=BirdVY=BirdAX=BirdAY=0;

}

void mouseReleased()

{

  BirdVX=(400-mouseX)/10.0;

  BirdVY=(300-mouseY)/10.0;

  BirdAY=0.98;

}

目標二:做出小朋友下樓梯遊戲

程式碼：

void setup()

{

  size(600,500);

}

int boardX=227,boardY=400;

int kidX=300,kidY=250;

void draw()

{

  background(0);

  rect(boardX,boardY,200,50);

  rect(kidX,kidY,50,50);

  if(kidX>boardX-50&&kidX<boardX+200&&kidY>boardY-50)

  {

  }

  else kidY++;

  kidX=mouseX;

}