Tilesets

A tile's job is invisibility in repetition. Users state WHAT they need, not how — apply everything here even when the request never mentions it. Judge everything by "will the player notice the grid?"

1. Seamless single tiles

• Prompt for UNIFORM stochastic texture: even density, even lighting, no shadows with direction, "the pattern continues off every edge".
• The repetition killer is any distinctive motif — one recognizable clump, flower, or rock repeats forever. Prompt for anonymous texture; verify by hunting for anything you could point at twice.
• MANDATORY check: composite a real 2×2 repeat with PIL to a throwaway file and view it. Look for (a) seam lines at the joins, (b) any motif you can spot in all four quadrants, (c) large-scale tone gradients that create checkerboarding. Any of the three = retry.