Hi there, I'm trying to make a fly swatter mini game but I can't get it to add more flies after you swat the first one.

[answerhappygod]

Hi there, I'm trying to make a fly swatter mini game but I can't
get it to add more flies after you swat the first one. The score
should also update every time you swat a fly. The fly should also
move around but I can't figure out how to get it working. Any help
would be appreciated and it needs to be able to run in processing 4
using java. The first image is what it should looks like.
Here is my current code:
PImage fly,flybye,swatter,swatted;
float[] fX,fY; // fly locations array
float[] swat; // fly swatted binary boolean array, 1 =
swatted, 0 = not swatted
int score=0; // increments when swatted.
void setup(){
size(800,400);
fX=new float[0];
fY=new float[0];
swat=new float[0];
// load images
fly = loadImage("fly.png");
fly.resize(50,50);
flybye = loadImage("flybye.png");
flybye.resize(50,50);
swatter = loadImage("swatter.png");
swatted = loadImage("swatted.png");
fX =append(fX, random(50,750)); //first fly - random
location
fY =append(fY, random(25,375));
swat =append(swat,0); // used as a boolean and matches to
each individual fly, 0 = fly not swatted, 1 = swatted.
}
void populate(){ // draw the flies in memory to the
screen.
for(int i=0;i<fX.length;i++){
if(swat==1){ // if swatted
// resize the fly image and place based on
fx/fy array values
image(flybye, fX[0], fY[0]);
} else { // not swatted
image(fly,fX[0],fY[0]);
}
}
}
void collisionDetect(){
int newFlys = 0;
for(int i=0; i<swat.length;i++){ // bounding box
detection
if ( swat[0] == 1 )
continue;
if(mouseX-37 > fX[0]-40 &&
mouseX-37 < fX[0]+40 && mouseY-30 > fY[0]-40
&& mouseY-30 < fY[0]+40){
swat[0] = 1; //
swatted
newFlys ++;
image(flybye, fX[0],
fY[0]);
score=0;
score ++; //increment
score
}
}
for (int i=0; i < newFlys; ++i){
fX = append(fX, random(50,750)); //new
fly placed in random location when old fly dies.
fY = append(fY, random(50,350));
swat =append(swat,0); // new fly not
swatted
}
}
void draw(){
background(255);
noCursor(); //added to hide cursor for a more fluid
look
populate(); // draw flys to screen.
fill(0);
// set a text size and location for the score.
textSize(22);
text("total score: ",score, 250, 0);
if(mousePressed){ // image swap
collisionDetect();
image(swatted, mouseX-37, mouseY-30); //draw
swatter image to around mouse locaiton - might want to play with
this to get it to look right.
}else{
image(swatter, mouseX-37, mouseY-30); // if not
pressed then alternative image.
}
}