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[M4-S2] Swap a region from clean to anomaly #35
Description
Problem
Every region has two states. The swap must change only the layers and collision that differ.
Acceptance criteria
- Swaps the changed layers (Rusty Creek: structure) and the collision file for the anomaly state
- Moves the hero to the region's start; enemies spawn from the anomaly collision
- Reusable for every region
Notes and dependencies
04 – Every region has two states. Never cut. Owner: Vatsal – lane B, game code (docs/13).
Verification
Debug key toggles the state on every chunk; collision overlay follows.
Activity
[-]Swap a region from clean to anomaly[/-][+][M4-S2] Swap a region from clean to anomaly[/+]arudaev commentedon Oct 24, 2026
Done in #155 (merged with the stack into main, 2cb1f6d):
swapRegion,trigger-entered, and the garden → creek → maze route.