This is a basic grid-world ant foraging simulation. Ants start at the nest and explore the world looking for food, returning immediately if they find any (while carrying a bit back to deposit at the nest). Ants leave light pheromone trails while they are searching, as well as heavier pheromone trails when returning to the nest with food. Ants make decisions of where to search probabilistically based on the pheromone concentrations in each of the squares ahead of them.

Legend

teal box	the nest
yellow box(es)	food piles (brighter = more food)
brown rectangles	obstacles (may not be present)
green areas	pheromone (brighter = higher concentration)
white ants	ants that are searching
blue ants	ants that are returning to the nest without food
orange ants	ants that are returning to the nest with food