0000675: Well-timed repeated jumps are silent to player and AI - The Dark Mod Bugtracker

ID	Project	Category	View Status	Date Submitted	Last Update

0000675	The Dark Mod	Coding	public	13.05.2008 10:36	02.06.2008 01:19

Reporter	crispy	Assigned To	greebo
Priority	normal	Severity	major	Reproducibility	always
Status	closed	Resolution	fixed
Product Version	SVN
Fixed in Version	Saint Lucia Release

Summary	0000675: Well-timed repeated jumps are silent to player and AI
Description	This bug is more obvious with the player soft landing sound removed (see http://modetwo.net/darkmod/index.php?showtopic=7730 ), but has existed for a long time without me realising what was going on. Press jump. Shortly afterwards, just as the player is about to hit the ground, press jump again. If you time it right, the player will jump again without making any AI-audible noises (such as footsteps). This bug can be exploited repeatedly, and while moving. With a little practice, you can jump all the way down a corridor with metal flooring, close to hostile AI, without the AI hearing them at all. I have successfully done this.
Additional Information	This is not due to removing the soft landing sound, because the soft landing sound actually wasn't audible to AI in the first place! Many of the player movement sounds besides footsteps are not audible to AI. Footsteps are normally played upon landing via two methods. Firstly, there are still footstep framecommands in the soft_land player animation - these should have been removed when I implemented footsteps-via-code, but were overlooked. These footsteps presumably don't play because the soft_land animation is interrupted by the jumping animation (which goes to show the issues inherent in an animation-based footsteps system). The other method is footsteps-via-code. I theorise that "player jump" handling occurs before footstep handling in each frame, so the footstep code never gets a chance to see that the player was briefly non-airborne.
Tags	No tags attached.

greebo 01.06.2008 15:11 administrator ~0001219	I can confirm that the jump animation is kicking in before the softland animation can play its sounds. One closely related problem here is footstep sounds can only be played if the player has ground contacts. I tried placing a "leftFoot()" call right at the beginning of the "Legs_Soft_Land()" script function, but this sound never gets played because the player is already airborne again at that time. Suggestion: Maybe introduce a jump dead time after each jump which ensures that the player cannot perform this multi-jump stunt in the first place?

crispy 02.06.2008 01:19 reporter ~0001225	Confirmed fixed, thanks greebo!

Date Modified	Username	Field	Change
13.05.2008 10:36	crispy	New Issue
01.06.2008 15:11	greebo	Note Added: 0001219
01.06.2008 15:11	greebo	Status	new => confirmed
01.06.2008 16:04	greebo	Status	confirmed => assigned
01.06.2008 16:04	greebo	Assigned To	=> greebo
01.06.2008 16:07	greebo	Status	assigned => resolved
01.06.2008 16:07	greebo	Fixed in Version	=> Saint Lucia Release
01.06.2008 16:07	greebo	Resolution	open => fixed
02.06.2008 01:19	crispy	Note Added: 0001225
02.06.2008 01:19	crispy	Status	resolved => closed