One-way angle in Colliders, Physics, Tiles and Tilemaps, Development: check total 1075 (#159)

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Colliders.md

@@ -81,11 +81,17 @@ block it. `Move` without the setting and `Set position` ignore colliders entirel
 
 A collider with **One-way** on (#155) blocks only what comes from one side: **Blocks from** says
 which — *Above* by default, or *Below*, *Left*, *Right* — in the collider's own axes, so it turns
-and mirrors with its object. In the scene view that side is drawn thick. It is the platform a
+and mirrors with its object. In the scene view that side is drawn thick, with a fan on its middle
-figure jumps through from below and lands on from above:
+showing the **One-way angle**. It is the platform a figure jumps through from below and lands on
+from above:
 
-- It blocks a contact whose normal lies within **45 degrees** of that side; anything else passes -
+- It blocks a contact whose normal lies within the **One-way angle** of that side — **45 degrees**
-  from below, and from the side as well, as in Unity and Godot.
+  by default, 0 to 90 (#159); anything else passes - from below, and from the side as well, as in
+  Unity and Godot. The angle counts where the surface is not square to that side: on a slope of
+  25 degrees in a polygon blocking from *Above*, a figure lands at 25 degrees or more and falls
+  through below that. At 90 degrees the sides block too, only what comes from the opposite side
+  passes.
+- *Blocks from* and *One-way angle* show in the inspector only while *One-way* is on.
 - What is already inside it passes on through for as long as it is inside, so a jump that did not
   clear the top falls back out below.
 - `Move` with *Collide with solids* reports `hit` only where it was stopped, and a fast fall is

Development.md

@@ -12,7 +12,7 @@ npm run check        # typecheck + lint + format:check + tests, the gate CI runs
                      #   code is lost (tail's is reported), so a red run reads as green
 npm run build        # writes dist/ and regenerates index.html
 ./build.sh           # the same under `set -o pipefail`, for callers that pipe the output
-node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1074 editor checks, screenshots in /tmp/gm-e2e-*.png
+node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 1075 editor checks, screenshots in /tmp/gm-e2e-*.png
 GM_STEPS=20 node tools/e2e.mjs                                # or 1-12, or 6,20 — a subset while working on one step
 ./e2e.sh start [GM_STEPS]                                     # the same run detached, see below
 ./e2e.sh status                                               # live progress, or the last run's result

Physics.md

@@ -108,7 +108,8 @@ one-way collider is worked out **before every step**:
 
 - It **lands** when it is on the blocking side or sunk in no deeper than 2 units (a landing at 60
   steps per second sinks in 1.9 before the engine pushes it out), the contact faces that side
-  within 45 degrees, and it is not moving away from it.
+  within the collider's or tile's one-way angle (45 degrees by default, #159), and it is not moving
+  away from it.
 - Once landed it is **held** as long as the two overlap: a body falling 2000 units per second is
   13 units into an 8 units thick platform one step later, and is pushed back up instead of passing.
 - Otherwise it passes, and so does a body told to by `Ignore one-way`. A resting body is woken for

Tilemaps.md

@@ -210,9 +210,11 @@ There are no trigger tiles yet: a tile blocks or it does not.
 A solid tile with **One-way (from above)** on (#155) blocks only what comes down on it from above,
 like a one-way collider blocking from *Above* (see [Colliders](Colliders#one-way)): a figure jumps
 through from below and from the side, lands on top, and falls through with `Ignore one-way`. Above
-means the map's top, turned with it. One-way cells are merged into rectangles the same way, but only
+means the map's top, turned with it. The tile's **One-way angle** (45 degrees by default, #159) is
-with each other — a platform next to a wall is two shapes, so the wall never blocks from below only.
+how far a contact may lean from straight up and still land, as on a collider. One-way cells are
-In the scene view they are outlined thinner, their top drawn thick.
+merged into rectangles the same way, but only with each other and only with tiles of the same angle —
+a platform next to a wall is two shapes, so the wall never blocks from below only. In the scene view
+they are outlined thinner, their top drawn thick with the fan of their angle on its middle.
 
 ## In the project file
 

Tiles.md

@@ -62,6 +62,8 @@ asks for; a picture that does not fit is kept and named, never silently dropped.
   every layer (#132); see [Tilemaps](Tilemaps#collision).
 - **One-way (from above)** — off by default. A solid tile with it on blocks only from above: a
   platform one jumps through from below (#155); see [Tilemaps](Tilemaps#one-way-tiles).
+- **One-way angle** — 45 by default, 0 to 90, shown while *One-way* is on. How far a contact may
+  lean from straight up and still land on the tile (#159).
 - **Collision scale** — 1 by default. How big a solid cell blocks against its square, drawn in or
   out only on the sides without a blocking neighbour (#140); see
   [Tilemaps](Tilemaps#collision-scale).