week03 至

拖曳滑鼠使產生慣性

程式碼

程式碼:

void setup(){

  size(800,600);  //視窗初始化大小

}

float HookX=400,HookY=300;   

float HookVX=0,HookVY=0; 

void draw(){

  background(255);     //背景顏色(數值)

  ellipse(HookX,HookY, 50,50);     //畫一個圓(大小半徑為50)  line(HookX,HookY,400,300);       //畫一條線

  HookX+=HookVX;

  HookY+=HookVY;

}

void mouseDragged(){    //滑鼠拖曳

  HookX=mouseX;

  HookY=mouseY;

}

void mouseReleased(){     //滑鼠釋放

  HookVX=(400-mouseX)/100.0;      HookVY=(300-mouseY)/100.0;   }

拖曳滑鼠射擊讓泳圈消失

程式碼:

PImage imgHook,imgLove; 

void setup(){

  size(800,600);

  imgHook=loadImage("Hook.jpg");        

  imgLove=loadImage("Love.jpg");   

  imageMode(CENTER);  

}

float HookX=400,HookY=300;

float HookVX=0,HookVY=0;

float HookAX=0,HookAY=0;

float LoveX=700,LoveY=100;

boolean LoveAlive=true;

void draw(){

  background(255);

  if(LoveAlive)image(imgLove,LoveX,LoveY,100,100);     

  image(imgHook,HookX,HookY,100,100);

  if(dist(LoveX,LoveY,HookX,HookY)<100){

    LoveAlive=false;

  } 

  line(HookX,HookY,400,300);

  HookX+=HookVX;

  HookY+=HookVY;

  HookVX+=HookAX;

  HookVY+=HookAY;

}

void mouseDragged(){

  HookX=mouseX;

  HookY=mouseY;

  HookVX=HookVY=HookAX=HookAY=0;

}

void mouseReleased(){

  HookVX=(400-mouseX)/10.0;

  HookVY=(300-mouseY)/10.0;

  HookAY=0.98;

}

接著設定邊界，讓魚不會彈出視窗外

程式碼:

PImage imgHook,imgLove; 

void setup(){

  size(800,600);

  imgHook=loadImage("Hook.jpg");        

  imgLove=loadImage("Love.jpg");   

  imageMode(CENTER);  

}

float HookX=400,HookY=300;

float HookVX=0,HookVY=0;

float HookAX=0,HookAY=0;

float LoveX=700,LoveY=100;

boolean LoveAlive=true;

void draw(){

  background(255);

  if(LoveAlive)image(imgLove,LoveX,LoveY,100,100);     

  image(imgHook,HookX,HookY,100,100);

  if(dist(LoveX,LoveY,HookX,HookY)<100){

    LoveAlive=false;

  } 

  line(HookX,HookY,400,300);

  

  

  HookX+=HookVX;

  HookY+=HookVY;

  if(HookX<50){HookX=50;HookVX=-HookVX;}

  if(HookX>width-50){HookX=width-50;HookVX=-HookVX;}

  if(HookY<50){HookY=50;HookVY=-HookVY;}

  if(HookY>height-50){HookY=height-50;HookVY=-HookVY;}

  

  HookVX+=HookAX;

  HookVY+=HookAY;

  HookVX*=0.997;

  HookVY*=0.997;

}

void mouseDragged(){

  HookX=mouseX;

  HookY=mouseY;

  HookVX=HookVY=HookAX=HookAY=0;

}

void mouseReleased(){

  HookVX=(400-mouseX)/10.0;

  HookVY=(300-mouseY)/10.0;

  HookAY=0.98;

}

小朋友下樓梯概念

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;

}