float x=250,y=250,vx=0,vy=3;
void setup(){
size(500,600);
}
void draw(){
background(255);
ellipse(x,y,50,50);
// y=y+3;///3是速度
y=y+vy;
}
float x=250,y=0,vx=0,vy=3;
float x2=150,y2=50,vx2=0,vy2=2;
void setup(){
size(500,600);
}
void draw(){
background(255);
ellipse(x,y,50,50);
ellipse(x2,y2,50,50);
// y=y+3;///3是速度
y=y+vy;
y2=y2+vy2;
}
//很多組
float []x={250,150,350,300};
float []y={0,50,80,100};
float []vx={0,0,0,0};
float []vy={3,2,2.5,4};
void setup(){
size(500,600);
}
void draw(){
background(255);
for(int i=0;i<4;i++){
ellipse(x[i],y[i],50,50);
y[i] = y[i]+vy[i];//vy是速度
}
}
可以讓球碰到牆反彈
//很多組又多一點互動
float []x={250,150,350,300};
float []y={0,50,80,100};
float []vx={0,0,0,0};
float []vy={3,2,2.5,4};
void setup(){
size(500,600);
}
void draw(){
background(255);
for(int i=0;i<4;i++){
ellipse(x[i],y[i],50,50);
y[i] = y[i]+vy[i];//vy是速度
if(y[i]>600) vy[i] = -vy[i];//撞到下方
if(y[i]<0)vy[i]=-vy[i];//撞到上方
}
}
//很多組又多一點互動
float []x={250,150,350,300};
float []y={0,50,80,100};
float []vx={0,0,0,0};
float []vy={3,2,2.5,4};
void setup(){
size(500,600);
}
void draw(){
background(255);
for(int i=0;i<4;i++){
fill(255,255,0);ellipse(x[i],y[i],50,50);
if(dist(mouseX,mouseY,x[i],y[i])<=50){
continue;
}
y[i] = y[i]+vy[i];//vy是速度
if(y[i]>600) vy[i] = -vy[i];//撞到下方
if(y[i]<0)vy[i]=-vy[i];//撞到上方
}
fill(255,0,0);ellipse(mouseX,mouseY,50,50);
}
這個程式碼可以讓紅球碰到的黃球消失
//很多組又多一點互動
float []x={250,150,350,300};
float []y={0,50,80,100};
float []vy={3,2,2.5,4};
boolean [] dead={false,false,false,false};
void setup(){
size(500,600);
}
void draw(){
background(255);
for(int i=0;i<4;i++){
///fill(255,255,0);ellipse(x[i],y[i],50,50);
if(dist(mouseX,mouseY,x[i],y[i])<=50){
dead[i]=true;
}
if(dead[i]==true) continue;
fill(255,255,0);ellipse(x[i],y[i],50,50);
y[i] = y[i]+vy[i];//vy是速度
if(y[i]>600) vy[i] = -vy[i];//撞到下方
if(y[i]<0)vy[i]=-vy[i];//撞到上方
}
fill(255,0,0);ellipse(mouseX,mouseY,50,50);
}
因為課堂上有同學不懂boolean 所以寫一個比較易懂的程式碼教學(布林變數)
綠色是不成立，紅色是成立
boolean down;//按下去
void setup(){
size(500,300);
}
void draw(){
if(mousePressed) down=true;//成立
else down=false;//不成立
print(down);
if(down) background(255,0,0);//紅色
else background(0,255,0);//綠色
}
變出隨機的球數
float []x;//外面宣告global陣列變數
float []y;
float []vy;
boolean []dead;
int N=20;
void setup(){
size(500,600);
x = new float[N];
y = new float[N];
vy = new float[N];
dead = new boolean[N];
for(int i=0;i<N;i++){
x[i] = random(500);//500以下亂數
y[i] = random(100,200);
vy[i] = random(3,4);
dead[i]=false;//沒有死掉
}
}
void draw(){
background(255);
for(int i=0;i<N;i++){
///fill(255,255,0);ellipse(x[i],y[i],50,50);
if(dist(mouseX,mouseY,x[i],y[i])<=50){
dead[i]=true;
}
if(dead[i]==true) continue;
fill(255,255,0);ellipse(x[i],y[i],50,50);
y[i] = y[i]+vy[i];//vy是速度
if(y[i]>600) vy[i] = -vy[i];//撞到下方
if(y[i]<0)vy[i]=-vy[i];//撞到上方
}
fill(255,0,0);ellipse(mouseX,mouseY,50,50);
}
class Ball{
float x,y,vx,vy;
boolean dead;
Ball(){
x = random(500);
y = random(100,200);
vy = random(3,4);
dead = false;
}
void draw(){
if(dead==true) return;
ellipse(x,y,50,50);
if(dist(mouseX,mouseY,x,y)<50){
dead=true;
}
y = y+vy;
if(y>500) vy = -vy;
if(y<0) vy = -vy;
}
}
Ball []balls;
void setup(){
size(500,500);
balls = new Ball[20];
for(int i=0;i<20;i++){
balls[i]=new Ball();
}
}
void draw(){
background(255);
for(int i=0;i<20;i++){
balls[i].draw();
}
}
class Ball{
float x,y,vx,vy;
boolean dead;
Ball(){
x = random(500);
y = random(500);
vy = random(-4,4);
vx = random(-4,4);
dead = false;
}
void draw(){
if(dead==true) return;
ellipse(x,y,50,50);
if(dist(mouseX,mouseY,x,y)<50){
dead=true;
}
x = x + vx;
y = y + vy;
if(y>500||y<0) vy = -vy;
if(x>500||x<0) vy = -vy;
}
}
Ball []balls;
void setup(){
size(500,500);
balls = new Ball[20];
for(int i=0;i<20;i++){
balls[i]=new Ball();
}
}
void draw(){
background(255);
for(int i=0;i<20;i++){
balls[i].draw();
}
}
加一個重力加速度
class Ball{
float x,y,vx,vy;
boolean dead;
Ball(){
x = random(500);
y = random(500);
vy = random(-4,4);
vx = random(-4,4);
dead = false;
}
void draw(){
if(dead==true) return;
ellipse(x,y,50,50);
if(dist(mouseX,mouseY,x,y)<50){
dead=true;
}
x = x + vx;
y = y + vy;
vy += 0.98;
if(y>500||y<0) vy = -vy;
if(x>500||x<0) vy = -vy;
}
}
Ball []balls;
void setup(){
size(500,500);
balls = new Ball[20];
for(int i=0;i<20;i++){
balls[i]=new Ball();
}
}
void draw(){
background(255);
for(int i=0;i<20;i++){
balls[i].draw();
}
}
發射子彈，玩家碰到子彈就結束遊戲(變成紅色的畫面)
class Ball{//我們發明 Ball物件
float x, y, vx, vy;
boolean dead;
Ball(){//建構 同名的東西
reborn();
}
void reborn(){
x = random(500);
y = random(500);
vy = random(-2,2);
vx = random(-2,2);
dead = false;//沒有死掉
}
void draw(){
if(dead==true) return;
fill(255,0,0); ellipse(x,y, 5,5);
if( dist(mouseX,mouseY,x,y)<5 ){
dead=true;
gameOver=true;
}
x = x + vx*1;//速度*時間=距離
y = y + vy*1;
if(y>500 || y<0) reborn();
if(x>500 || x<0) reborn();
}
}
Ball [] balls;
void setup(){
size(500,500);
balls = new Ball[99];
for(int i=0; i<99; i++){
balls[i] = new Ball();
}
}
boolean gameOver=false;
void draw(){
background(0);
for(int i=0; i<99; i++){
balls[i].draw();
}
if(gameOver) background(255,0,0);
}
