Discussion and analysis of the cause is on discord in the #ncollide channel.
A picture (in this case gif) is worth 100s words:
The root cause is in the EPA algorithm for 2D implementation (0 dimensions of simplex).
Bug can be reproduced in this below branch of my repository. Try to overlap edges of another rectangle while being under it.
Gray is the rectangle you move as, red is the corners you can reproduce the bug on.
The information printed on console when this bug occurs can be configured in this file:
https://github.com/RybekU/Slimeu/blob/ncollide_bug/src/phx/collision/detection.rs#L51
Movement with WASD keys, run with cargo run --features debug-info to see hitboxes (sprite is just a transparent rectangle).
Discussion and analysis of the cause is on discord in the #ncollide channel. A picture (in this case gif) is worth 100s words:
The root cause is in the EPA algorithm for 2D implementation (0 dimensions of simplex).
Bug can be reproduced in this below branch of my repository. Try to overlap edges of another rectangle while being under it.
Gray is the rectangle you move as, red is the corners you can reproduce the bug on.
The information printed on console when this bug occurs can be configured in this file:
https://github.com/RybekU/Slimeu/blob/ncollide_bug/src/phx/collision/detection.rs#L51
Movement with WASD keys, run with
cargo run --features debug-infoto see hitboxes (sprite is just a transparent rectangle).