/godot-tilemap-mastery

Migration notes: godot-tilemap-mastery

Incremental upgrade for topics this skill covers. Apply one hop, stabilize/test, then next. Never skip hops.

If the project is < 4.0, follow godot-version-migration era bridges (legacy → 3→4) until 4.0, then these hops. Official 3→4: Upgrading from Godot 3 to Godot 4.

3.x → 4.0

Official: Upgrading from Godot 3 to Godot 4

• TileMap map_to_world/world_to_map → map_to_local/local_to_map.
• Converter keeps TileMap; TileMapLayer split is a 4.3 hop — do not expect it at 4.0.
• GridMap map_to_world/world_to_map → local variants.
• Re-save tilesets after convert; verify collision polygons.

4.0 → 4.1

Official: Upgrading to Godot 4.1

• PathFollow2D.lookahead removed — update tile-adjacent path-follow samples (moving platforms on Path2D).

4.1 → 4.2

Official: Upgrading to Godot 4.2

• TileMap.cell_quadrant_size → rendering_quadrant_size — grep performance tuning sections for the old property name.

4.2 → 4.3

Official: Upgrading to Godot 4.3

• TileMap layers → child TileMapLayer nodes — migrate scenes/scripts: one node per layer, per-layer z-order, collision, and navigation polygons.
• Confirm rendering_quadrant_size lives on each TileMapLayer after migration.
• TileData.get_navigation_polygon() / get_occluder() gain flip/transpose optionals — pass transform when sampling nav/occluder from flipped tiles.

4.3 → 4.4

Official: Upgrading to Godot 4.4

No skill-relevant breaking changes for this hop.

4.4 → 4.5

Official: Upgrading to Godot 4.5

• TileMapLayer physics chunking changed — get_coords_for_body_rid() is less precise; set physics_quadrant_size = 1 when debugging which tile owns a collision RID.

4.5 → 4.6

Official: Upgrading to Godot 4.6

No skill-relevant breaking changes for this hop.

4.6 → 4.7

Official: Upgrading to Godot 4.7

No skill-relevant breaking changes for this hop.