# WeirdForce — Chromatic Drift A one-screen prototype for RayEngine where **the background is the physics**. `src/background.fs` paints a colour field. `src/map.jl` is an allocation-free CPU port of that exact shader, so the game can sample the colour under the player and turn it into acceleration: | sample | force | | ----------------- | ---------------------------- | | red dominant | push left | | green dominant | push right | | blue dominant | push up | | white | hover (forces cancel) | | black (vignette) | dead zone | | yellow | down (red + green, no blue) | You can only steer horizontally. Height is the field's business — ride the magenta updrafts, let the green water carry you right, and dive through the yellow downdrafts. ## Play From `example/`: ```sh julia --project=. activate.jl ``` or from the REPL: ```julia using WeirdForce WeirdForce.run!() ``` Reach the gold beacon before its countdown ring drains. Each capture moves the tour to a different mood of the field; after all six, the field jumps more often and the tour starts again. Missing a beacon shifts both the beacon and the field. Every few seconds the whole field also jumps a little to a new snapshot. | key | action | | ---------------------- | -------------------------------------- | | `A` / `D`, `←` / `→` | nudge left / right | | `W` / `S`, `↑` / `↓` | nudge up / down | | `G` | toggle the force-arrow grid | | `F` | engine debug overlay | | `P` | pause / resume | | `R` | restart the run | The white arrows are the field's force at each point (G toggles the grid); the player has to learn the currents by reading the colours and feeling the d…