Interactive ants!

Use the image file in this post and run the code in NodeBox. Clicking in the window after you render will add food sources to the scene.

You will also need the ants & color libraries installed.

try:
    ants = ximport("ants")
    colors = ximport("colors")
 
except:
    ants = ximport("__init__")
    reload(ants)
 
size(500,500)
speed(200)
 
clr = colors.rgb(0.6, 0.4, 0, 0.5)
 
def setup():    
    
    # Starts a colony with 30 ants in it.
    global colony, has_clicked
    colony = ants.colony(20, WIDTH/2, HEIGHT/2, 100)
    
    # Add some food in the vicinity of the colony.
    for i in range(0):
        x = 50 + random(WIDTH-100)
        y = 50 + random(HEIGHT-100)
        s = random(20,40)
        colony.foodsources.append(ants.food(x,y,s))
 
 
        
def draw():
    global colony, has_clicked
 
    if mousedown:
        if not has_clicked:
            x = MOUSEX
            y = MOUSEY
            s = random(20,40)
            colony.foodsources.append(ants.food(x,y,s))
            has_clicked = True
    else:
        has_clicked = False
    
    image("dirt3.jpg", 0, 0)
    
    # Draw the hoarded food in the colony.
    s = colony.food
    #colony hole
    #strokewidth(10)
    #stroke(1, .5, .4)
    #fill(0, 0, 0)
    #oval(245, 245, 20, 20)
    nostroke()
    
    # Draw each foodsource in green.
    # Watch it shrink as the ants eat away its size parameter!
    #fill(0.6,0.8,0)
    fill(0.6, 0.4, 0, 0.6)
    for f in colony.foodsources:
        #food source
        oval(f.x-f.size/2, f.y-f.size/2, f.size, f.size)
           
    for ant in colony:
        
        #stroke(0,0,0, 0.4)
        strokewidth(1)
        nofill()
        autoclosepath(False)
        
        # Draw the pheromone trail for each ant.
        # Ants leave a trail of scent from the foodsource,
        # enabling other ants to find the food as well!
        if len(ant.trail) > 0:
            beginpath(ant.trail[0].x, ant.trail[0].y)
            for p in ant.trail: lineto(p.x, p.y)
            endpath()
        
        nostroke()
        # ant color no food
        fill(0,0,0, 0.8)
        
        # Change ant color when carrying food.
        if ant.has_food:
            fill(0,0,0)
        
            
        # The main ant behaviour:
        # 1) follow an encountered trail,
        # 2) harvest nearby food source,
        # 3) bring food back to colony,
        # 4) wander aimlessly
        ant.forage()
        rect(ant.x, ant.y, 3, 3)