要開始準備期末作品了
要做掉落的金幣
float x = 250,y = 0, vx = 0, vy = 3;
void setup(){
size(500,600);
}
void draw(){
background(255);
ellipse(x,y,50,50);
y = y + vy;
}
那球就是金幣
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 + vy;
y2 = y2 + vy2;
}
不同位置與速度的球
接著利用陣列跟迴圈畫球
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];
}
}
讓球上下彈
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];
if(y[i] > 600) vy[i] = -vy[i];
if(y[i] < 0) vy[i] = -vy[i];
}
}
把球上黃色，再做一個碰到就會停的紅球
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];
if(y[i] > 600) vy[i] = -vy[i];
if(y[i] < 0) vy[i] = -vy[i];
}
fill(255,0,0);ellipse(mouseX,mouseY,50,50);
}
做一個隨機生球，碰到消失的程式
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();
}
}
讓球有更多變化
class Ball{
float x,y,vx,vy;
boolean dead;
Ball(){
x = random(500);
y = random(500);
vy = random(-4,4);//這裡
vx = random(-4,4);//這裡
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;//這裡
y = y + vy;
if(y > 500 || y < 0) vy = -vy;//這裡
if(x > 500 || x < 0) vx = -vx;//這裡
}
}
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();
}
}
改造成用滑鼠躲球的遊戲
class Ball{
float x,y,vx,vy;
boolean dead;
Ball(){
rebron();
}
void rebron(){
x = random(500);
y = random(500);
vy = random(-2,2);
vx = random(-2,2);
dead = false;
}
void draw(){
if(dead == true) return;
ellipse(x,y,50,50);
if(dist(mouseX,mouseY,x,y) < 5){
dead = true;
gameOver = true;
}
x = x + vx*1;
y = y + vy*1;
vy += 0.98;//重力
if(y > 500 || y < 0) vy = -vy;
if(x > 500 || x < 0) vx = -vx;
}
}
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);
}
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