Da note week04

 1-1 先寫一條會延伸的線

code:

void setup(){

  size(500,500);

}

int x=250, y=250;

void draw(){

  ellipse(x,y,10,10);

  x=x+1;

  y=y-1;

}

1-2 把線變成一個點 並用if判斷球碰到邊界時可以反彈

code:

void setup(){

  size(500,500);

}

float x=250, y=250;

float vx=1.0,vy=-0.5;

void draw(){

  ellipse(x,y,10,10);

  x=x+vx;

  y=y+vy;

  if(x>500)vx=-vx;

  if(y<0)vy=-vy;

}

4-3 寫底下增加一個可以操縱的反彈板，完成遊戲

code:

void setup(){

  size(500,500);

}

float x=250, y=250;

float vx=2.0,vy=-1.5;

void draw(){

  background(#FFFFF2);

  int boardX=mouseX;

  rect(boardX,470,100,20);

  ellipse(x,y,10,10);

  x=x+vx;

  y=y+vy;

  if(x>500)vx=-vx;

  if(y<0)vy=-vy;

  if(x<0)vx=-vx;

  if(y>470 && x>boardX && x<boardX+100)vy=-vy;

}

1-4 調整變數 按住滑鼠左鍵時可增加底部的長度

code:

void setup(){

  size(500,500);

}

float x=250, y=250;

float vx=2.0,vy=-2.5;

float boardX,boardY=470,boardW=100,boardH=20;

void draw(){

  boardX = mouseX-boardW/2;

  background(#FFFFF2);

  rect(boardX,boardY,boardW,boardH);

  ellipse(x,y,10,10);

  x=x+vx;

  y=y+vy;

  if(x>500)vx=-vx;

  if(y<0)vy=-vy;

  if(x<0)vx=-vx;

  if((y>boardY && y<boardY+boardH) && (x>boardX && x<boardX+boardW))

  {

    vy=-vy;

    vx+=(mouseX-pmouseX)/2;

  }

  if(mousePressed && mouseButton==LEFT)boardW*=1.01;

  if(mousePressed && mouseButton==RIGHT)boardW*=0.99;

}

2-1

寫一個迴圈來畫棋子

code:

void setup(){

  size(500,500);

}

void draw(){

    for(int x=50;x<=450;x+=50){

      for(int y=50;y<=450;y+=50){

        ellipse(x,y,50,50);

      }

    }

}

2-2

code:

void setup(){

  size(500,500);

}

int [][] go={

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

};

void draw(){

    for(int i=0;i<9;i++){

      for(int j=0;j<9;j++){

        if( go[i][j]==1)fill(0);

        else fill(255);

        ellipse(50+j*50,50+i*50,50,50);

      }

    }

}

2-3優化棋盤的線跟白色的旗子

code:

void setup(){

  size(500,500);

}

int [][] go={

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,2,1},

  {0,0,0,0,0,0,0,0,1},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

};

void draw(){

   background(246,194,108);

   for(int i=1;i<=9;i++){

        line(50,50*i,450,50*i);

        line(50*i,50,50*i,450);

      }

      for(int i=0;i<9;i++){

        for(int j=0;j<9;j++){

        if( go[i][j]==1){

        fill(0);

        ellipse(50+j*50,50+i*50,40,40);

      }else if(go[i][j]==2){

        fill(255);

        ellipse(50+j*50,50+i*50,40,40);

      }

     }

    }

}

2-4 新增一段程式碼用滑鼠可以控制下黑棋跟白棋的位置

code:

void setup(){

  size(500,500);

}

int [][] go={

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

  {0,0,0,0,0,0,0,0,0},

};

int N=0;

void mousePressed(){

  int j=(mouseX-25)/50;

  int i=(mouseY-25)/50;

  go[i][j]=(N%2==0)?1:2;

  N++;

}

void draw(){

   background(246,194,108);

   for(int i=1;i<=9;i++){

        line(50,50*i,450,50*i);

        line(50*i,50,50*i,450);

      }

      for(int i=0;i<9;i++){

        for(int j=0;j<9;j++){

        if( go[i][j]==1){

        fill(0);

        ellipse(50+j*50,50+i*50,40,40);

      }else if(go[i][j]==2){

        fill(255);

        ellipse(50+j*50,50+i*50,40,40);

      }

     }

    }

}