Prop Footsteps

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Note:This issue has been resolved in the Half-Life 2: Episode Two codebase; if you are using its code, you should not try to implement this mod.

For player footsteps, Valve used MASK_PLAYERSOLID_BRUSHONLY rather than MASK_PLAYERSOLID. This difference made it so only the static world would have dynamic footsteps. The following precedure will show how to fix this issue.

Note:This will not make any difference if PlayStepSound is overridden by the player entity (i.e. HL2MP).

Basic Fix

src\cl_dll\c_baseplayer.cpp

Shift Trace Start Up

// Straight down end.z -= 64;

→

// Straight down start.z += 1; end.z -= 64;

Smaller Trace Box Height

Ray_t ray; ray.Init( start, end, GetPlayerMins(), GetPlayerMaxs() );

↓

Ray_t ray; Vector mins = GetPlayerMins(); Vector maxs = GetPlayerMaxs(); maxs.z = mins.z + 1; ray.Init( start, end, mins, maxs);

Change Trace Mask

UTIL_TraceRay( ray, MASK_PLAYERSOLID_BRUSHONLY, this, COLLISION_GROUP_PLAYER_MOVEMENT, &trace );

↓

UTIL_TraceRay( ray, MASK_PLAYERSOLID, this, COLLISION_GROUP_PLAYER_MOVEMENT, &trace );

src\game_shared\gamemovement.cpp

Shift Trace Start Up

// Straight down end[2] -= 64;

→

// Straight down start[2] += 1; end[2] -= 64;

Smaller Trace Box Height & Change Trace Mask

TracePlayerBBox( start, end, MASK_PLAYERSOLID_BRUSHONLY, COLLISION_GROUP_PLAYER_MOVEMENT, trace );

↓

Ray_t ray; Vector mins = player->GetPlayerMins(); Vector maxs = player->GetPlayerMaxs(); maxs.z = mins.z + 1; ray.Init( start, end, mins, maxs); UTIL_TraceRay( ray, MASK_PLAYERSOLID, player, COLLISION_GROUP_PLAYER_MOVEMENT, &trace );

HL2MP Override Removal

src\cl_dll\hl2mp\c_hl2mp_player.h

Prototype Removal

• PlayStepSound
• PrecacheFootStepSounds

src\game_shared\hl2mp\hl2mp_player_shared.cpp

Symbol Removal

• PlayStepSound
• PrecacheFootStepSounds

src\dlls\hl2mp_dll\hl2mp_player.cpp

Precache

In function CHL2MP_Player::Precache
Remove	PrecacheFootStepSounds();

src\dlls\hl2mp_dll\hl2mp_player.h

Prototype Removal

• PlayStepSound
• PrecacheFootStepSounds