0000260: Defining (ALLOW)BOUNCEONACTORS restricts z-axis movement of rippers in monsters?

ID	Project	Category	View Status	Date Submitted	Last Update

0000260	Gameplay + OpenGL	[All Projects] Bug	public	2017-02-13 12:37	2017-04-30 18:02

Reporter	GFD
Assigned To	Rachael
Priority	normal	Severity	minor	Reproducibility	always
Status	closed	Resolution	open

Summary	0000260: Defining (ALLOW)BOUNCEONACTORS restricts z-axis movement of rippers in monsters?
Description	Attached is a heavily simplified version of some old DECORATE code I had for a ripping projectile. In development builds (currently using Feb. 13's), this projectile cannot move vertically when ripping through a monster, but it can in 2.8.1. If you comment out the definitions for both the ALLOWBOUNCEONACTORS and BOUNCEONACTORS flags, but leave the A_ChangeFlag instructions under Spawn, this restriction of vertical movement no longer occurs, despite the flags still being set. Rarely, while the aforementioned bug is in effect, the projectile can suddenly gain a ton of vertical velocity if being shot towards the top of the monster. I'm not sure what to make of that either.
Steps To Reproduce	Using the attached example code, fire the pistol at a monster, and notice how the fired projectile can't move vertically while inside the monster in development builds, but can in 2.8.1. This is more easily noticed with larger enemies.
Tags	DECORATE

Date Modified	Username	Field	Change
2017-02-13 12:37	GFD	New Issue
2017-02-13 12:37	GFD	File Added: ripbug_test.pk3
2017-02-13 12:37	GFD	Tag Attached: DECORATE
2017-02-13 15:01	Graf Zahl	Note Added: 0000557
2017-03-02 03:21	Graf Zahl	Status	new => confirmed
2017-04-30 18:02	Rachael	Assigned To	=> Rachael
2017-04-30 18:02	Rachael	Status	confirmed => closed

GFD 2017-02-13 12:37 reporter	ripbug_test.pk3 (737 bytes)

Graf Zahl 2017-02-13 15:01 administrator ~0000557	While I found a few problems in the bouncing code while checking this I have no idea what causes this effect. It still happens on occasion but I have no idea where things go wrong.