I created a small library for detecting collisions with other tokens during a token's last movement, adapted from my interpolated trap detection script. <a href="https://gist.github.com/Cazra/348653571dffc16e87b9" rel="nofollow">https://gist.github.com/Cazra/348653571dffc16e87b9</a>... Simply tell it what token moved and and which tokens you're testing collisions with it. It even works with waypoint movement. It also requires a script of vector math functions I've implemented here: <a href="https://gist.github.com/Cazra/8d7fdd5f1975c7b28605" rel="nofollow">https://gist.github.com/Cazra/8d7fdd5f1975c7b28605</a> The updated trap detection script which uses this library can be found here, as an example of how to use the library: <a href="https://app.roll20.net/forum/post/529899/script-interpolated-trap-detection#post-776572" rel="nofollow">https://app.roll20.net/forum/post/529899/script-interpolated-trap-detection#post-776572</a>