So i'm pretty new to Java coding so maybe someone can help. I have to make a program where there are rabbits and wolves, where the wolves eat the rabbits so I', trying to figure out how to make the rabbit disappear when it collides into the wolf.
var skyBlue = color(100,200,255);
var pumpkin = color(255, 117, 24);
var periwinkle = color(204, 204, 255);
var deepRed = color(200,0,0);
stroke(pumpkin);
var stepCount = 0;
var xlist = ;
var ylist = ;
var speedX = ;
var speedY = ;
var collision = ;
var i = 0;
while (i<15)
{
xlist.push(random(0, 500));
ylist.push(random(0, 500));
speedX.push(random(-1, 1));
speedY.push(random(-1, 1));
collision.push(0);
i++;
}
var ballSize = 20;
var redDuration = 15; //15 frames is about 1/4 sec.
strokeWeight(3);
draw = function ()
{
stepCount++;
background(periwinkle);
//Check to see if any balls collide.
var i = 0;
while (i<xlist.length)
{
var k = i+5; //Why is k started at i+1?
while (k<xlist.length)
{
if (isCollision(i,k)) break;
k++;
}
i++;
}
//Each ball that did not hit another ball gets moved in a random direction
//All balls are rendered.
i = 0;
while (i<xlist.length)
{
xlist = xlist + speedX;
ylist = ylist + speedY;
if (xlist + ballSize/2 > canvasWidth) speedX = random(-5, 1);
if (ylist + ballSize/2 > canvasHeight) speedY = random(-5, 1);
if (xlist - ballSize/2 < 0) speedX = random(1, 5);
if (ylist - ballSize/2 < 0) speedY = random(1, 5);
if (collision > 0)
{
collision--;
fill(deepRed);
}
else fill(skyBlue);
ellipse(xlist, ylist, ballSize, ballSize);
i++;
}
};
isCollision = function(i,k)
{
var deltaX = xlist - xlist;
var deltaY = ylist - ylist;
var distanceBetweenCenters = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
if (distanceBetweenCenters <= ballSize)
{
if (xlist < xlist)
{
speedX = random(-5, -1);
speedX = random(1, 5);
}
else
{
speedX = random(1, 5);
speedX = random(-5, -1);
}
if (ylist < ylist)
{
speedY = random(-5, -1);
speedY = random(1, 5);
}
else
{
speedY = random(1, 5);
speedY = random(-5, -1);
}
collision = redDuration;
collision = redDuration;
return true
}
return false;
};
