#11 Source Rect error

[Ben Lard]

When running in Debug mode, this error comes up:
Direct3D8: (ERROR) :BLTFAST error. Can't have non-
positive height or width for source rect

[ventolin]

Logged In: YES
user_id=473088

Mostly fixed. Still has problems with Projectiles and
SpecialEffects, but it's quite seldom. The major cause of
the problem was a couple hundred off-by-one errors
throughout the code.