World

Configures the simulation grid.

The world is the arena where agents live and are evaluated. It defines the physical space - how big it is, what’s in it, and how items replenish after being consumed. Every evolution run takes place inside a world; the same agent body can behave very differently in a dense 5x5 grid versus a sparse 20x20 one. World configuration is one of the key levers for controlling how hard navigation and foraging tasks are.

world ForestFloor {
    size: 15 x 15             // width x height (minimum 3 x 3)
    walls: border             // border walls around edges
    item_respawn: 20 ticks    // ticks before consumed items respawn
    spawn food: 8             // spawn 8 items of category "food"
    spawn water: 4            // spawn 4 items of category "water"
}

Rules

• size dimensions must be >= 3 (need at least 1 interior cell)
• walls must be border (custom walls not yet supported)
• ticks unit suffix is optional (for readability)
• Spawn categories must match item categories in the evolve block’s item list
• Total spawns + agents must be less than interior cell count