int []x=new int[1000];
int []y=new int[1000];
color []c=new color[1000];
int n=0;
void setup(){
size(400,400);
}
void draw(){
background(255);
for(int i=0;i<n;i++){
fill(c[i]);
circle(x[i],y[i],30);
y[i]+=2;
}
}
void mousePressed(){
x[n]=mouseX;
y[n]=mouseY;
c[n]=color(random(225),random(255),random(255));
n++;
}
增加讓球變大
int []x=new int[1000];
int []y=new int[1000];
int []r=new int[1000];
color []c=new color[1000];
int n=0;
void setup(){
size(400,400);
}
void draw(){
background(255);
for(int i=0;i<n;i++){
fill(c[i]);
circle(x[i],y[i],r[i]);
y[i]--;
}
if(mousePressed) r[n-1]++;
}
void mousePressed(){
x[n]=mouseX;
y[n]=mouseY;
r[n]=10;
c[n]=color(random(225),random(255),random(255));
n++;
}
利用陣列減少程式碼
class Bubble{
int x;
int y;
int r;
color c;
}
Bubble []b=new Bubble[1000];
int n=0;
void setup(){
size(400,400);
}
void draw(){
background(255);
for(int i=0;i<n;i++){
fill(b[i].c);
circle(b[i].x,b[i].y,b[i].r);
b[i].y--;
}
if(mousePressed) b[n-1].r++;
}
void mousePressed(){
b[n]=new Bubble();
b[n].x=mouseX;
b[n].y=mouseY;
b[n].r=10;
b[n].c=color(random(225),random(255),random(255));
n++;
}
利用物件再簡化程式碼
Bubble []b=new Bubble[1000];
int n=0;
void setup(){
size(400,400);
}
void draw(){
background(255);
for(int i=0;i<n;i++){
b[i].drawAndUpdate();
}
if(mousePressed) b[n-1].r++;
}
void mousePressed(){
b[n]=new Bubble(mouseX,mouseY,10);
n++;
}
class Bubble{
int x;
int y;
int r;
color c;
Bubble(int _x,int _y,int _r){
x=_x;y=_y;r=_r;
c=color(random(255),random(255),random(255));
}
void drawAndUpdate(){
fill(c);
circle(x,y,r);
y--;
}
}
了解陣列
size(300,300);
int [][] table={ {0,0,0,0,0},
{1,1,1,0,1},
{0,0,1,1,0},
{0,0,1,1,0} };
for(int i=0;i<4;i++){
for(int j=0;j<5;j++){
if(table[i][j]==1) fill(255,0,0);
else fill(128);
rect(j*50,i*50,50,50);
}
}
基礎踩地雷
int [][]table=new int[6][6];
void setup(){
size(300,300);
}
void draw(){
background(128);
for(int i=0;i<6;i++){
for(int j=0;j<6;j++){
if(table[i][j]==1) fill(255,0,0);
else fill(128);
rect(j*50,i*50,50,50);
}
}
}
void mousePressed(){
int x=(mouseX)/50;
int y=(mouseY)/50;
table[y][x]=1;
}
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