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Client: Restore HL SDK behavior for gait animations #307

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Merged
tmp64 merged 1 commit into from
Jul 23, 2026
Merged

Client: Restore HL SDK behavior for gait animations #307

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30 changes: 12 additions & 18 deletions src/game/client/StudioModelRenderer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,19 +22,6 @@
#include "GameStudioModelRenderer.h"
#include "opengl.h"

// Bones that used in gait animation
#define NUM_LEGS_BONES 8
const char *legs_bones[NUM_LEGS_BONES] = {
"Bip01",
"Bip01 Pelvis",
"Bip01 L Leg",
"Bip01 L Leg1",
"Bip01 L Foot",
"Bip01 R Leg",
"Bip01 R Leg1",
"Bip01 R Foot",
};

// Global engine <-> studio model rendering code interface
engine_studio_api_t IEngineStudio;

Expand Down Expand Up @@ -964,19 +951,26 @@ void CStudioModelRenderer::StudioSetupBones(void)

pseqdesc = (mstudioseqdesc_t *)((byte *)m_pStudioHeader + m_pStudioHeader->seqindex) + m_pPlayerInfo->gaitsequence;

int copy = 1;

panim = StudioGetAnim(m_pRenderModel, pseqdesc);
StudioCalcRotations(pos2, q2, pseqdesc, panim, m_pPlayerInfo->gaitframe);

for (i = 0; i < m_pStudioHeader->numbones; i++)
{
for (int j = 0; j < NUM_LEGS_BONES; j++)
if (!strcmp(pbones[i].name, "Bip01 Spine"))
{
copy = 0;
}
else if (pbones[i].parent != -1 && !strcmp(pbones[pbones[i].parent].name, "Bip01 Pelvis"))
{
copy = 1;
}

if (copy)
{
if (strcmp(pbones[i].name, legs_bones[j]))
continue;
// setup animation only for legs bones
memcpy(pos[i], pos2[i], sizeof(pos[i]));
memcpy(q[i], q2[i], sizeof(q[i]));
break;
}
}
}
Expand Down
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