我想在处理中按一个按钮来添加/删除一个椭圆。我使用 void keyPressed() 和 void keyReleased() 作为键。现在我可以添加更多，并删除一些省略号。例如，如果我有一个，我可以按一个按钮，然后再有一个。或按一个按钮删除一个。但现在我想为每个椭圆使用不同的键集来移动这些椭圆（最多 4 个）。所以我做了4个不同的集合，但现在我不能让它们同时移动。我怎样才能做到这一点？请帮我。下面是我的代码。
final static int N1= 1; //players can move at the same time
final static int S1 = 2;
final static int E1 = 4;
final static int W1 = 8; // Speed limit. Round out edges for field (silhouette)
// if time Collision detection
final static int N2 = 16;
final static int S2 = 32;
final static int E2 = 64;
final static int W2 = 128;
final static int N3 = 256;
final static int S3 = 512;
final static int E3 = 1024;
final static int W3 = 2048;
final static int N4 = 4096;
final static int S4 = 8192;
final static int E4 = 16384;
final static int W4 = 32768;
int result,k; //store key input and initial number of players on field
float x1,x2,x3,x4,y1,y2,y3,y4,n,r; //Decleare some useful variables
boolean sketchFullScreen() { //Make full screen
return true;
}
void setup() { //Basic setup
size(displayWidth, displayHeight); //Window size maximum
noCursor(); //Hide mouse cursor
frameRate(60); //set the frame rate, can lower the rate for lower performent pc
result = 0;
k = 1;
n = 8; //initial movement speed
r = 15; //initial radius of bubble
x1 = 2*width/3;
y1 = height/3;
x2 = 2*width/3; //light dot initial position
y2 = 2*height/3;
x3 = width/3;
y3 = height/3;
x4 = width/3;
y4 = 2*height/3;
}
void draw() { //Start drawing
background(0); //Black background(COMPLETELY BLACK)
switch(result){
case N1: y1=y1-n; break;
case E1: x1=x1+n; break;
case S1: y1=y1+n; break;
case W1: x1=x1-n; break; //create movement to the dot by reassigning the coordinates
case N1|E1: y1=y1-n; x1=x1+n; break;
case N1|W1: y1=y1-n; x1=x1-n; break;
case S1|E1: y1=y1+n; x1=x1+n; break;
case S1|W1: y1=y1+n; x1=x1-n; break;
case N2: y2=y2-n; break;
case E2: x2=x2+n; break;
case S2: y2=y2+n; break;
case W2: x2=x2-n; break; //create movement to the dot by reassigning the coordinates
case N2|E2: y2=y2-n; x2=x2+n; break;
case N2|W2: y2=y2-n; x2=x2-n; break;
case S2|E2: y2=y2+n; x2=x2+n; break;
case S2|W2: y2=y2+n; x2=x2-n; break;
case N3: y3=y3-n; break;
case E3: x3=x3+n; break;
case S3: y3=y3+n; break;
case W3: x3=x3-n; break; //create movement to the dot by reassigning the coordinates
case N3|E3: y3=y3-n; x3=x3+n; break;
case N3|W3: y3=y3-n; x3=x3-n; break;
case S3|E3: y3=y3+n; x3=x3+n; break;
case S3|W3: y3=y3+n; x3=x3-n; break;
case N4: y4=y4-n; break;
case E4: x4=x4+n; break;
case S4: y4=y4+n; break;
case W4: x4=x4-n; break; //create movement to the dot by reassigning the coordinates
case N4|E4: y4=y4-n; x4=x4+n; break;
case N4|W4: y4=y4-n; x4=x4-n; break;
case S4|E4: y4=y4+n; x4=x4+n; break;
case S4|W4: y4=y4+n; x4=x4-n; break;
}
if(k>=5){k=4;} //max bumber of players is 4
if(k<0){k=0;} //least amount of players is 0
if(x1<0){x1=r/2;}
else if(x1>displayWidth){x1=displayWidth-r/2;}
if(x2<0){x2=r/2;}
else if(x2>displayWidth){x2=displayWidth-r/2;}
if(x3<0){x3=r/2;}
else if(x3>displayWidth){x3=displayWidth-r/2;}
if(x4<0){x4=r/2;}
else if(x4>displayWidth){x4=displayWidth-r/2;}
if(y1<0){y1=r/2;}
else if(y1>displayHeight){y1=displayHeight-r/2;}
if(y2<0){y2=r/2;}
else if(y2>displayHeight){y2=displayHeight-r/2;}
if(y3<0){y3=r/2;}
else if(y3>displayHeight){y3=displayHeight-r/2;}
if(y4<0){y4=r/2;}
else if(y4>displayHeight){y4=displayHeight-r/2;}
stroke(255); //White light stroke
if(k==1){ellipse(x1,y1,r,r);} //Draw an ellipse at location (x,y) xwith radius of 15 pixels
if(k==2){
ellipse(x1,y1,r,r);
ellipse(x2,y2,r,r);
}
if(k==3){
ellipse(x1,y1,r,r);
ellipse(x2,y2,r,r);
ellipse(x3,y3,r,r);
}
if(k==4){
ellipse(x1,y1,r,r);
ellipse(x2,y2,r,r);
ellipse(x3,y3,r,r);
ellipse(x4,y4,r,r);
}
}
void keyPressed() {
switch(key) {
case('w'):case('W'):result |=N1;break;
case('d'):case('D'):result |=E1;break;
case('s'):case('S'):result |=S1;break; //classify the cases for the key pressed
case('a'):case('A'):result |=W1;break;}
switch(key) {
case('8'):result |=N2;break;
case('6'):result |=E2;break;
case('5'):result |=S2;break;
case('4'):result |=W2;break;}
switch(key) {
case('t'):case('T'):result |=N3;break;
case('h'):case('H'):result |=E3;break;
case('g'):case('G'):result |=S3;break;
case('f'):case('F'):result |=W3;break;}
switch(key) {
case('i'):case('I'):result |=N4;break;
case('l'):case('L'):result |=E4;break;
case('k'):case('K'):result |=S4;break;
case('j'):case('J'):result |=W4;break;}
switch(key) {
case('+'):case('='): n++;break;
case('_'):case('-'): n--;break; //change movement speed
case('['):case('{'): r=r-1;break; //change radius of bubble
case(']'):case('}'): r=r+1;break;
case(':'): k--;break; //add and take away players
case('"'): k++;break;
}
}
void keyReleased(){
switch(key) {
case('w'):case('W'):result ^=N1;break;
case('d'):case('D'):result ^=E1;break;
case('s'):case('S'):result ^=S1;break; //classify the cases for the key pressed
case('a'):case('A'):result ^=W1;break;}
switch(key) {
case('8'):result ^=N2;break;
case('6'):result ^=E2;break;
case('5'):result ^=S2;break;
case('4'):result ^=W2;break;}
switch(key) {
case('t'):case('T'):result ^=N3;break;
case('h'):case('H'):result ^=E3;break;
case('g'):case('G'):result ^=S3;break;
case('f'):case('F'):result ^=W3;break;}
switch(key) {
case('i'):case('I'):result ^=N4;break;
case('l'):case('L'):result ^=E4;break;
case('k'):case('K'):result ^=S4;break;
case('j'):case('J'):result ^=W4;break;}
switch(key) {
case('+'):case('='): n++;break;
case('_'):case('-'): n--;break;
case('['):case('{'): r=r-1;break;
case(']'):case('}'): r=r+1;break;
}
}