buildCollisionGrid
buildCollisionGrid(
map,opts):CollisionGrid
Defined in: src/modules/tilemap/collision-grid.ts:45
Derives a walkability mask from layered tile GIDs using two allowlists (floor + walkable props). More robust than enumerating every wall GID: new obstacle tiles added to the map are automatically solid without updating an exclusion list.
Floor GIDs are always walkable. Walkable-prop GIDs override solid tiles on upper layers. Everything else is solid.