By default, Speeder will no longer cancel animations if a terrain hit is detected (e.g. striking the ground, wall, rock, etc.). This hit detection has been moved to line 67:
67) If 1, timing assist will activate via terrain as well as mobs.
In general, this should be 0, but you can change it to 1 if you want to smack a wall and test out timing assist or lines 53/57.
Basically, lines 53, 57, and 17 will now only activate if you hit a mob (unless you set line 67 to 1). This requires updating Speeder to version 25.
