1-1
做出一顆球碰到旁邊牆壁就停止反彈。
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
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=-vx;
if(x<0)vx=-vx;
}
1-3
做出可以讓球反彈的平台，求落下後用滑鼠移動平台，讓球落在上面後就會反彈。
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=-vx;
if(x<0)vx=-vx;
if(y>470&&x>boardX&&x<boardX+100)vy=-vy;
}
2-1
平台透過滑鼠左鍵能夠變長，而滑鼠右鍵則是縮小回原來的大小。
void setup(){
size(500,500);
}
float x=250,y=250;
float vx=2.0, vy=-1.5;
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=-vx;
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;
}
2-2
運用迴圈畫出很多的棋子。
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);
}
}
}
2-3
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},
{0,1,0,0,0,0,0,0,1},
{0,0,0,0,0,0,0,1,1},
{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);
}
}
}
3-1
做出棋盤將數字改成二會變成白棋，1是黑棋
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},
{0,1,0,0,0,0,0,0,1},
{0,0,0,0,0,0,0,1,1},
{0,0,0,0,0,0,0,0,1},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,2,0,0,0},
{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);//白棋
ellipse(50+j*50,50+i*50,40,40);
}
}
}
}
3-2
按下滑鼠會先放置黑棋，在按一次則是放置白棋。
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);//白棋
ellipse(50+j*50,50+i*50,40,40);
}
}
}
}
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