Projectile behaviour at high speeds

[Former user]

There seem to be a couple of effects of high speed projectiles:

1. Projectiles are sometimes able to travel into and even straight through walls
2. Occasionally the game will lock up and crash, requiring the process to be terminated

I suspect these two are related, possibly 2 is caused by a projectile moving through a wall as in 1. and heading outside the map boundary?

These effects do not happen 100% of the time but happens more and more frequently on a projectile speed of about 100 or above. It might not be advisable to have projectiles moving at this speed in which case the only fix may be to limit the speed that can be assigned to projectiles to less than 100? Still, you can create some pretty interesting effects with fast projectiles.

[Braden Obrzut]

The crashing is definitely an issue I will need to fix at some point, but until FastProjectile is ported the speed will always be limited by the diameter of the projectile. (It might actually be twice the diameter of the projectile since the speed is scaled to that of Doom). Basically, if the actor moves more than its bounding box in one tic then it may miss colliding with a wall.

[Braden Obrzut]

It has been brought to my attention that ZDoom steps X/Y movement regardless, so fixed in changeset 0abb806.