mirror of
https://github.com/openfrontio/OpenFrontIO.git
synced 2026-06-21 07:40:43 +00:00
FloPinguin
805f0968b1
## Description: Relates to #3725 Adds a new **Impassable** terrain type that enables non-rectangular maps and creates impassable barriers on the map. Painted with pure black (`#000`) in the map editor's `image.png`. **Encoding:** Impassable terrain is encoded in the binary format as `isLand=1, magnitude=31` (previously unused). The Go map generator detects `#000` pixels and produces this encoding. The map generator's minimap downscaling gives impassable highest priority (Impassable > Water > Land). Thumbnails render impassable as transparent so the map picker background shows through. **Rendering:** Impassable tiles render as the map background colour (`rgb(60, 60, 60)`, matching `gl.clearColor` in `Renderer.ts`), making them visually indistinguishable from the area outside the map quad. This enables maps to appear non-rectangular. **Gameplay restrictions:** Impassable terrain cannot be: - Owned (`conquer()` throws) - Attacked (`AttackExecution` skips impassable tiles in both `tick()` and `addNeighbors()`) - Nuked (targeting rejected in `nukeSpawn()`, blast radius filtered in `tilesToDestroy()`) - Spawned on (nations, human players, and structures all reject impassable tiles) - Converted to water (guarded in `WaterManager` and `setWater()`) **Nuke trajectories:** Nuke trajectories cannot cross impassable terrain, matching the existing map-border enforcement. This is checked at launch time in `NukeExecution.tick()`. The client-side trajectory preview turns red with a red X where the arc crosses impassable terrain (reusing the existing SAM-intercept visual pipeline in `NukeTrajectory.ts`). The nuke ghost preview is completely hidden when hovering over impassable terrain (same as hovering outside the map). https://github.com/user-attachments/assets/ff131146-9749-41e0-892a-617e5cd16c54 Impassable terrain is transparent on the thumbnail: <img width="213" height="152" alt="Screenshot 2026-06-18 211640" src="https://github.com/user-attachments/assets/ede16f8c-9239-4ab1-be5d-0ba81cce5e9e" /> Tested with water nukes, made sure there is no water depth gradient near the impassable terrain, just like at the world border: <img width="774" height="771" alt="Screenshot 2026-06-18 212348" src="https://github.com/user-attachments/assets/4429069d-911b-48e8-91e3-7307d42c9397" /> Models used: GLM 5.2 and MiMo 2.5 Pro 😄 ## Please complete the following: - [X] I have added screenshots for all UI updates - [X] I process any text displayed to the user through translateText() and I've added it to the en.json file - [X] I have added relevant tests to the test directory ## Please put your Discord username so you can be contacted if a bug or regression is found: FloPinguin