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var cells = [];
var direction = 'u';
var antPos;
var running = false;
function turnright(d)
{
switch(d)
{
case 'u':
return 'r';
case 'd':
return 'l';
case 'r':
return 'd';
case 'l':
return 'u';
}
}
function turnleft(d)
{
return turnright(turnright(turnright(d)));
}
function setup()
{
frameRate(100);
createCanvas(500, 500);
antPos = [width/2, height/2];
for (var i = 0; i < height; i++)
{
cells.push([]);
for (var j = 0; j < width; j++)
{
cells[i].push(1);
}
}
stroke(255, 0, 0);
point(antPos[0], antPos[1]);
}
function start()
{
running = true;
}
function stop()
{
running = false;
}
function resetPos()
{
drawCell(antPos[0], antPos[1]);
antPos[0] = width/2;
antPos[1] = height/2;
stroke(255, 0, 0);
point(antPos[0], antPos[1]);
}
function drawCell(x, y)
{
stroke(cells[y][x]*255);
point(x, y);
}
function draw()
{
if (!running)
return;
for (var i = 0; i < parseInt(document.getElementById("speed").value); i++)
{
if (antPos[0] < 0 || antPos[0] >= width || antPos[1] < 0 || antPos[1] >= height)
{
running = false;
}
if (!running)
return;
if (cells[antPos[1]][antPos[0]] == 1)
direction = turnright(direction);
else
direction = turnleft(direction);
cells[antPos[1]][antPos[0]] = 1-cells[antPos[1]][antPos[0]];
drawCell(antPos[0], antPos[1]);
if (direction == 'u')
antPos[1]--;
else if (direction == 'l')
antPos[0]--;
else if (direction == 'd')
antPos[1]++;
else if (direction == 'r')
antPos[0]++;
stroke(255, 0, 0);
point(antPos[0], antPos[1]);
}
}
function mouseDragged()
{
if (mouseX < 0 || mouseX >= width || mouseY < 0 || mouseY >= height)
return;
cells[mouseY][mouseX] = 1-cells[mouseY][mouseX];
drawCell(mouseX, mouseY);
}
function clearCells()
{
cells = [];
for (var i = 0; i < height; i++)
{
cells.push([]);
for (var j = 0; j < width; j++)
{
cells[i].push(1);
}
}
background(255);
stroke(255, 0, 0);
point(antPos[0], antPos[1]);
}
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