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Fixing ladder climbing bug.

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This is a temporary fix (but it does fix the problem).  I'm going to try to
fix the underlying issue without using the temporary fix.
This commit is contained in:
Nerius Landys 2011-04-03 19:48:18 +00:00
parent 10a96d467b
commit ba1da1cc7a
1 changed files with 32 additions and 4 deletions
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36
reaction/code/game/bg_slidemove.c
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@ -54,6 +54,8 @@
#include "bg_public.h"
#include "bg_local.h"
#define TEMPORARY_STAIR_CLIMBING_BUG_FIX
/* QUAKE 2 Style */
/*
==================
@ -117,11 +119,18 @@ qboolean Q2_PM_SlideMove (qboolean gravity)
if (trace.fraction == 1)
break; // moved the entire distance
time_left -= time_left * trace.fraction;
#ifdef TEMPORARY_STAIR_CLIMBING_BUG_FIX
if (time_left < 0.001) {
// Please see comments on similar section of code in PM_SlideMove().
break;
}
#endif
// save entity for contact
PM_AddTouchEnt(trace.entityNum);
time_left -= time_left * trace.fraction;
// slide along this plane
if (numplanes >= MAX_CLIP_PLANES)
{ // this shouldn't really happen
@ -389,11 +398,30 @@ qboolean PM_SlideMove(qboolean gravity)
if (trace.fraction == 1) {
break; // moved the entire distance
}
// save entity for contact
PM_AddTouchEnt(trace.entityNum);
time_left -= time_left * trace.fraction;
#ifdef TEMPORARY_STAIR_CLIMBING_BUG_FIX
if (time_left < 0.001) { // Rambetter tested other values and this is the smallest acceptable.
// When time_left is small, it leads to some degenerate math computations
// which cause, for example, the player to get stuck while climbing stairs.
// The correct solution is to find those degenerate computations and fix
// them, but in the meantime this is a temporary fix that also fixes the
// problem. The bad thing about this fix is that we're ignoring
// as much as one-thousandth of a second on each client frame. So for
// example if the client is at 200 fps and walking into obstacles,
// as much as 1/5 of the forward progress could be ingored due to this code.
// Removing this temporary fix and cleaning up the degenerate computations
// might be especially important for trick jump maps. Rambetter is
// currently looking into the degenerate computations.
break;
}
#endif
// save entity for contact
PM_AddTouchEnt(trace.entityNum);
if (numplanes >= MAX_CLIP_PLANES) {
// this shouldn't really happen
// Makro - yet it does ! - added ifdef