/*
===========================================================================
Copyright (C) 2023 the OpenMoHAA team

This file is part of OpenMoHAA source code.

OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

OpenMoHAA source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

// DESCRIPTION:
// FPS view model animation

#include "cg_local.h"
#include "tiki.h"

static const char *AnimPrefixList[] = {
    "",
    "unarmed",
    "papers",
    "colt45",
    "p38",
    "histandard",
    "garand",
    "kar98",
    "kar98sniper",
    "springfield",
    "thompson",
    "mp40",
    "bar",
    "mp44",
    "fraggrenade",
    "stielhandgranate",
    "bazooka",
    "panzerschreck",
    "shotgun",
    //
    // Team Assault and Team Tactics weapons
    "mg42portable",
    "webley",
    "nagantrev",
    "beretta",
    "enfield",
    "svt",
    "mosin",
    "g43",
    "enfieldl42a1",
    "carcano",
    "delisle",
    "sten",
    "ppsh",
    "moschetto",
    "fg42",
    "vickers",
    "breda",
    "f1grenade",
    "millsgrenade",
    "nebelhandgranate",
    "m18smokegrenade",
    "rdg1smokegrenade",
    "bomba",
    "bombabreda",
    "mine",
    "minedetector",
    "minedetectoraxis",
    "detonator",
    "kar98mortar",
    "PIAT"
};

enum animPrefix_e {
    WPREFIX_NONE,
    WPREFIX_UNARMED,
    WPREFIX_PAPERS,
    WPREFIX_COLT45,
    WPREFIX_P38,
    WPREFIX_HISTANDARD,
    WPREFIX_GARAND,
    WPREFIX_KAR98,
    WPREFIX_KAR98SNIPER,
    WPREFIX_SPRINGFIELD,
    WPREFIX_THOMPSON,
    WPREFIX_MP40,
    WPREFIX_BAR,
    WPREFIX_MP44,
    WPREFIX_FRAGGRENADE,
    WPREFIX_STIELHANDGRANATE,
    WPREFIX_BAZOOKA,
    WPREFIX_PANZERSCHRECK,
    WPREFIX_SHOTGUN,
    //
    // Team Assault and Team Tactics weapons
    WPREFIX_MG42_PORTABLE,
    WPREFIX_WEBLEY,
    WPREFIX_NAGANTREV,
    WPREFIX_BERETTA,
    WPREFIX_ENFIELD,
    WPREFIX_SVT,
    WPREFIX_MOSIN,
    WPREFIX_G43,
    WPREFIX_ENFIELDL42A,
    WPREFIX_CARCANO,
    WPREFIX_DELISLE,
    WPREFIX_STEN,
    WPREFIX_PPSH,
    WPREFIX_MOSCHETTO,
    WPREFIX_FG42,
    WPREFIX_VICKERS,
    WPREFIX_BREDA,
    WPREFIX_F1_GRENADE,
    WPREFIX_MILLS_GRENADE,
    WPREFIX_NEBELHANDGRANATE,
    WPREFIX_M18_SMOKE_GRENADE,
    WPREFIX_RDG1_SMOKE_GRENADE,
    WPREFIX_BOMBA,
    WPREFIX_BOMBA_BREDA,
    WPREFIX_MINE,
    WPREFIX_MINE_DETECTOR,
    WPREFIX_MINE_DETECTOR_AXIS,
    WPREFIX_DETONATOR,
    WPREFIX_KAR98_MORTAR,
    WPREFIX_PIAT
};

int CG_GetVMAnimPrefixIndex()
{
    const char *szWeaponName;
    int         iWeaponClass;

    iWeaponClass = cg.snap->ps.stats[STAT_EQUIPPED_WEAPON];
    szWeaponName = CG_ConfigString(CS_WEAPONS + cg.snap->ps.activeItems[1]);

    if (iWeaponClass & WEAPON_CLASS_ANY_ITEM) {
        if (!Q_stricmp(szWeaponName, "Papers")) {
            return WPREFIX_PAPERS;
        }
        if (!Q_stricmp(szWeaponName, "Packed MG42 Turret")) {
            return WPREFIX_MG42_PORTABLE;
        }
    } else if (iWeaponClass & WEAPON_CLASS_PISTOL) {
        if (!Q_stricmp(szWeaponName, "Colt 45")) {
            return WPREFIX_COLT45;
        }
        if (!Q_stricmp(szWeaponName, "Walther P38")) {
            return WPREFIX_P38;
        }
        if (!Q_stricmp(szWeaponName, "Hi-Standard Silenced")) {
            return WPREFIX_HISTANDARD;
        }

        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "Webley Revolver")) {
            return WPREFIX_WEBLEY;
        }
        if (!Q_stricmp(szWeaponName, "Nagant Revolver")) {
            return WPREFIX_NAGANTREV;
        }
        if (!Q_stricmp(szWeaponName, "Beretta")) {
            return WPREFIX_BERETTA;
        }

        return WPREFIX_COLT45;
    } else if (iWeaponClass & WEAPON_CLASS_RIFLE) {
        if (!Q_stricmp(szWeaponName, "M1 Garand")) {
            return WPREFIX_GARAND;
        }
        if (!Q_stricmp(szWeaponName, "Mauser KAR 98K")) {
            return WPREFIX_KAR98;
        }
        if (!Q_stricmp(szWeaponName, "KAR98 - Sniper")) {
            return WPREFIX_KAR98SNIPER;
        }
        if (!Q_stricmp(szWeaponName, "Springfield '03 Sniper")) {
            return WPREFIX_SPRINGFIELD;
        }

        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "Lee-Enfield")) {
            return WPREFIX_ENFIELD;
        }
        if (!Q_stricmp(szWeaponName, "SVT 40")) {
            return WPREFIX_SVT;
        }
        if (!Q_stricmp(szWeaponName, "Mosin Nagant Rifle")) {
            return WPREFIX_MOSIN;
        }
        if (!Q_stricmp(szWeaponName, "G 43")) {
            return WPREFIX_G43;
        }
        if (!Q_stricmp(szWeaponName, "Enfield L42A1")) {
            return WPREFIX_ENFIELDL42A;
        }
        if (!Q_stricmp(szWeaponName, "Carcano")) {
            return WPREFIX_CARCANO;
        }
        if (!Q_stricmp(szWeaponName, "DeLisle")) {
            return WPREFIX_DELISLE;
        }

        return WPREFIX_GARAND;
    } else if (iWeaponClass & WEAPON_CLASS_SMG) {
        if (!Q_stricmp(szWeaponName, "Thompson")) {
            return WPREFIX_THOMPSON;
        }
        if (!Q_stricmp(szWeaponName, "MP40")) {
            return WPREFIX_MP40;
        }
        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "Sten Mark II")) {
            return WPREFIX_STEN;
        }
        if (!Q_stricmp(szWeaponName, "PPSH SMG")) {
            return WPREFIX_PPSH;
        }
        if (!Q_stricmp(szWeaponName, "Moschetto")) {
            return WPREFIX_MOSCHETTO;
        }

        return WPREFIX_THOMPSON;
    } else if (iWeaponClass & WEAPON_CLASS_MG) {
        if (!Q_stricmp(szWeaponName, "BAR")) {
            return WPREFIX_BAR;
        }
        if (!Q_stricmp(szWeaponName, "StG 44")) {
            return WPREFIX_MP44;
        }
        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "FG 42")) {
            return WPREFIX_MP44;
        }
        if (!Q_stricmp(szWeaponName, "Vickers-Berthier")) {
            return WPREFIX_VICKERS;
        }
        if (!Q_stricmp(szWeaponName, "Breda")) {
            return WPREFIX_BREDA;
        }

        return WPREFIX_BAR;
    } else if (iWeaponClass & WEAPON_CLASS_GRENADE) {
        if (!Q_stricmp(szWeaponName, "Frag Grenade")) {
            return WPREFIX_FRAGGRENADE;
        }
        if (!Q_stricmp(szWeaponName, "Stielhandgranate")) {
            return WPREFIX_STIELHANDGRANATE;
        }
        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "F1 Grenade")) {
            return WPREFIX_F1_GRENADE;
        }
        if (!Q_stricmp(szWeaponName, "Mills Grenade")) {
            return WPREFIX_MILLS_GRENADE;
        }
        if (!Q_stricmp(szWeaponName, "Nebelhandgranate")) {
            return WPREFIX_NEBELHANDGRANATE;
        }
        if (!Q_stricmp(szWeaponName, "M18 Smoke Grenade")) {
            return WPREFIX_M18_SMOKE_GRENADE;
        }
        if (!Q_stricmp(szWeaponName, "RDG-1 Smoke Grenade")) {
            return WPREFIX_RDG1_SMOKE_GRENADE;
        }
        if (!Q_stricmp(szWeaponName, "Bomba A Mano")) {
            return WPREFIX_BOMBA;
        }
        if (!Q_stricmp(szWeaponName, "Bomba A Mano Breda")) {
            return WPREFIX_BOMBA_BREDA;
        }
        if (!Q_stricmp(szWeaponName, "LandmineAllies")) {
            return WPREFIX_MINE;
        }
        if (!Q_stricmp(szWeaponName, "LandmineAxis")) {
            return WPREFIX_MINE;
        }
        if (!Q_stricmp(szWeaponName, "Minensuchgerat")) {
            return WPREFIX_MINE_DETECTOR_AXIS;
        }
        if (!Q_stricmp(szWeaponName, "Minedetector")) {
            return WPREFIX_MINE_DETECTOR;
        }

        return WPREFIX_FRAGGRENADE;
    } else if (iWeaponClass & WEAPON_CLASS_HEAVY) {
        if (!Q_stricmp(szWeaponName, "Bazooka")) {
            return WPREFIX_BAZOOKA;
        }
        if (!Q_stricmp(szWeaponName, "Panzerschreck")) {
            return WPREFIX_PANZERSCHRECK;
        }
        if (!Q_stricmp(szWeaponName, "Gewehrgranate")) {
            return WPREFIX_KAR98_MORTAR;
        }
        if (!Q_stricmp(szWeaponName, "Shotgun")) {
            return WPREFIX_SHOTGUN;
        }
        //
        // Team Assault and Team Tactics
        //
        if (!Q_stricmp(szWeaponName, "PIAT")) {
            return WPREFIX_PIAT;
        }

        return WPREFIX_BAZOOKA;
    }

    return WPREFIX_UNARMED;
}

void CG_ViewModelAnimation(refEntity_t *pModel)
{
    int         i;
    int         iAnimFlags;
    float       fCrossblendTime, fCrossblendFrac, fCrossblendAmount;
    float       fAnimLength;
    int         iAnimPrefixIndex;
    const char *pszAnimSuffix;
    char        szAnimName[MAX_QPATH];
    dtiki_t    *pTiki;
    qboolean    bAnimChanged;
    qboolean    bWeaponChanged;

    fCrossblendFrac = 0.0;
    bAnimChanged    = qfalse;
    bWeaponChanged  = qfalse; // Added in OPM
    pTiki           = pModel->tiki;

    if (cgi.anim->g_iLastEquippedWeaponStat == cg.snap->ps.stats[STAT_EQUIPPED_WEAPON]
        && !strcmp(cgi.anim->g_szLastActiveItem, CG_ConfigString(CS_WEAPONS + cg.snap->ps.activeItems[1]))) {
        iAnimPrefixIndex = cgi.anim->g_iLastAnimPrefixIndex;
    } else {
        iAnimPrefixIndex                    = CG_GetVMAnimPrefixIndex();
        cgi.anim->g_iLastEquippedWeaponStat = cg.snap->ps.stats[STAT_EQUIPPED_WEAPON];
        Q_strncpyz(cgi.anim->g_szLastActiveItem, CG_ConfigString(CS_WEAPONS + cg.snap->ps.activeItems[1]), sizeof(cgi.anim->g_szLastActiveItem));
        cgi.anim->g_iLastAnimPrefixIndex = iAnimPrefixIndex;

        bAnimChanged   = qtrue;
        bWeaponChanged = qtrue;
    }

    if (cgi.anim->g_iLastVMAnim == -1) {
        Com_sprintf(szAnimName, sizeof(szAnimName), "%s_idle", AnimPrefixList[iAnimPrefixIndex]);
        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index = cgi.Anim_NumForName(pTiki, szAnimName);

        if (cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index == -1) {
            cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index = cgi.Anim_NumForName(pTiki, "idle");
            cgi.DPrintf("Warning: Couldn't find view model animation %s\n", szAnimName);
        }

        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].time   = 0.0;
        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].weight = 1.0;
        cgi.anim->g_iLastVMAnim                                        = 0;
    }

    if (cg.snap->ps.iViewModelAnimChanged != cgi.anim->g_iLastVMAnimChanged) {
        bAnimChanged                   = qtrue;
        cgi.anim->g_iLastVMAnim        = cg.snap->ps.iViewModelAnim;
        cgi.anim->g_iLastVMAnimChanged = cg.snap->ps.iViewModelAnimChanged;
    }

    if (bAnimChanged) {
        switch (cgi.anim->g_iLastVMAnim) {
        case VM_ANIM_CHARGE:
            pszAnimSuffix = "charge";
            break;
        case VM_ANIM_FIRE:
            pszAnimSuffix = "fire";
            break;
        case VM_ANIM_FIRE_SECONDARY:
            pszAnimSuffix = "fire_secondary";
            break;
        case VM_ANIM_RECHAMBER:
            pszAnimSuffix = "rechamber";
            break;
        case VM_ANIM_RELOAD:
            pszAnimSuffix = "reload";
            break;
        case VM_ANIM_RELOAD_SINGLE:
            pszAnimSuffix = "reload_single";
            break;
        case VM_ANIM_RELOAD_END:
            pszAnimSuffix = "reload_end";
            break;
        case VM_ANIM_PULLOUT:
            pszAnimSuffix = "pullout";
            break;
        case VM_ANIM_PUTAWAY:
            pszAnimSuffix = "putaway";
            break;
        case VM_ANIM_LADDERSTEP:
            pszAnimSuffix = "ladderstep";
            break;
        case VM_ANIM_IDLE_0:
            pszAnimSuffix = "idle0";
            break;
        case VM_ANIM_IDLE_1:
            pszAnimSuffix = "idle1";
            break;
        case VM_ANIM_IDLE_2:
            pszAnimSuffix = "idle2";
            break;
        case VM_ANIM_DISABLED:
            pszAnimSuffix = "disabled";
            break;
        default:
        case VM_ANIM_IDLE:
            pszAnimSuffix = "idle";
            break;
        }

        Com_sprintf(szAnimName, sizeof(szAnimName), "%s_%s", AnimPrefixList[iAnimPrefixIndex], pszAnimSuffix);
        if (!bWeaponChanged) {
            fCrossblendTime =
                cgi.Anim_CrossblendTime(pTiki, cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index);
            fCrossblendAmount = cgi.anim->g_iCurrentVMDuration / 1000.0;

            if (fCrossblendAmount < fCrossblendTime && fCrossblendAmount > 0.0) {
                fCrossblendFrac = fCrossblendAmount / fCrossblendTime;
                for (i = 0; i < MAX_FRAMEINFOS; ++i) {
                    if (cgi.anim->g_VMFrameInfo[i].weight) {
                        if (i == cgi.anim->g_iCurrentVMAnimSlot) {
                            cgi.anim->g_VMFrameInfo[i].weight = fCrossblendFrac;
                        } else {
                            cgi.anim->g_VMFrameInfo[i].weight *= (1.0 - fCrossblendFrac);
                        }
                    }
                }
            }
        } else {
            fCrossblendTime   = 0;
            fCrossblendAmount = 0;
            fCrossblendFrac   = 0;
        }

        cgi.anim->g_iCurrentVMAnimSlot = (cgi.anim->g_iCurrentVMAnimSlot + 1) % MAX_FRAMEINFOS;
        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index = cgi.Anim_NumForName(pTiki, szAnimName);

        if (cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index == -1) {
            cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index = cgi.Anim_NumForName(pTiki, "idle");
            cgi.DPrintf("Warning: Couldn't find view model animation %s\n", szAnimName);
        }

        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].time   = 0.0;
        cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].weight = 1.0;
        cgi.anim->g_iCurrentVMDuration                                 = 0;

        if (!bWeaponChanged) {
            fCrossblendTime =
                cgi.Anim_CrossblendTime(pTiki, cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index);
            if (!fCrossblendTime) {
                for (i = 0; i < MAX_FRAMEINFOS; ++i) {
                    if (i != cgi.anim->g_iCurrentVMAnimSlot) {
                        cgi.anim->g_VMFrameInfo[i].weight = 0.0;
                    }
                }

                cgi.anim->g_bCrossblending = qfalse;
            } else {
                cgi.anim->g_bCrossblending = qtrue;
            }
        } else {
            // Added in OPM
            //  If there is a new weapon, don't do any crossblend
            cgi.anim->g_bCrossblending = qfalse;

            // clear crossblend values
            for (i = 0; i < MAX_FRAMEINFOS; ++i) {
                if (i != cgi.anim->g_iCurrentVMAnimSlot) {
                    cgi.anim->g_VMFrameInfo[i].weight = 0.0;
                }
            }
        }
    }

    cgi.anim->g_iCurrentVMDuration += cg.frametime;
    if (cgi.anim->g_bCrossblending) {
        fCrossblendTime = cgi.Anim_CrossblendTime(pTiki, cgi.anim->g_VMFrameInfo[cgi.anim->g_iCurrentVMAnimSlot].index);
        fCrossblendAmount = cgi.anim->g_iCurrentVMDuration / 1000.0;
        if (fCrossblendAmount >= fCrossblendTime || fCrossblendAmount <= 0.0) {
            // clear crossblend values
            for (i = 0; i < MAX_FRAMEINFOS; ++i) {
                if (i != cgi.anim->g_iCurrentVMAnimSlot) {
                    cgi.anim->g_VMFrameInfo[i].weight = 0.0;
                }
            }

            cgi.anim->g_bCrossblending = qfalse;
        } else {
            fCrossblendFrac = fCrossblendAmount / fCrossblendTime;
        }
    }

    for (i = 0; i < MAX_FRAMEINFOS; ++i) {
        if (!cgi.anim->g_VMFrameInfo[i].weight) {
            // clear the weight values of the ref entity
            pModel->frameInfo[i].index  = 0;
            pModel->frameInfo[i].time   = 0.0;
            pModel->frameInfo[i].weight = 0.0;
        } else {
            fAnimLength = cgi.Anim_Time(pTiki, cgi.anim->g_VMFrameInfo[i].index);
            cgi.anim->g_VMFrameInfo[i].time += cg.frametime / 1000.0;

            if (cgi.anim->g_VMFrameInfo[i].time > fAnimLength) {
                if (pTiki) {
                    if (cgi.Anim_Flags(pTiki, cgi.anim->g_VMFrameInfo[i].index) & TAF_DELTADRIVEN) {
                        cgi.anim->g_VMFrameInfo[i].time -= fAnimLength;
                    } else {
                        cgi.anim->g_VMFrameInfo[i].time = fAnimLength;
                    }
                } else {
                    cgi.anim->g_VMFrameInfo[i].time = 0.f;
                }
            }

            pModel->frameInfo[i].index = cgi.anim->g_VMFrameInfo[i].index;
            pModel->frameInfo[i].time  = cgi.anim->g_VMFrameInfo[i].time;

            if (cgi.anim->g_bCrossblending) {
                if (i == cgi.anim->g_iCurrentVMAnimSlot) {
                    pModel->frameInfo[i].weight = fCrossblendFrac;
                } else {
                    pModel->frameInfo[i].weight = cgi.anim->g_VMFrameInfo[i].weight * (1.0 - fCrossblendFrac);
                }
            } else {
                pModel->frameInfo[i].weight = 1.0;
            }
        }
    }

    pModel->actionWeight = 1.0;
}

void CG_CalcViewModelMovement(float fViewBobPhase, float fViewBobAmp, vec_t *vVelocity, vec_t *vMovement)
{
    int    i;
    float  fPhase, fDelta;
    vec3_t vTargOfs;
    vec3_t vNorm;

    fPhase       = sin(fViewBobPhase + M_PI / 10) * fViewBobAmp * vm_sway_side->value;
    vMovement[0] = fPhase * vm_sway_front->value;
    vMovement[1] = fPhase;

    fPhase       = sin(fViewBobPhase - 0.94 + fViewBobPhase - 0.94 + M_PI);
    vMovement[2] = (sin((fViewBobPhase - 0.94) * 4.0 + M_PI / 2) * 0.125 + fPhase) * fViewBobAmp * vm_sway_up->value;

    if (cg.predicted_player_state.walking) {
        if (cg.predicted_player_state.viewheight == CROUCH_EYE_HEIGHT) {
            if (cgi.anim->g_iLastAnimPrefixIndex == WPREFIX_BAZOOKA
                || cgi.anim->g_iLastAnimPrefixIndex == WPREFIX_PANZERSCHRECK) {
                vTargOfs[0] = vm_offset_rocketcrouch_front->value;
                vTargOfs[1] = vm_offset_rocketcrouch_side->value;
                vTargOfs[2] = vm_offset_rocketcrouch_up->value;
            } else if (cgi.anim->g_iLastAnimPrefixIndex == WPREFIX_SHOTGUN) {
                vTargOfs[0] = vm_offset_shotguncrouch_front->value;
                vTargOfs[1] = vm_offset_shotguncrouch_side->value;
                vTargOfs[2] = vm_offset_shotguncrouch_up->value;
            } else {
                vTargOfs[0] = vm_offset_crouch_front->value;
                vTargOfs[1] = vm_offset_crouch_side->value;
                vTargOfs[2] = vm_offset_crouch_up->value;
            }
        } else {
            memset(vTargOfs, 0, sizeof(vTargOfs));
        }
    } else {
        vTargOfs[0] = vm_offset_air_front->value;
        vTargOfs[1] = vm_offset_air_side->value;
        vTargOfs[2] = vm_offset_air_up->value;
    }

    if (cg.predicted_player_state.walking) {
        fDelta = VectorLength(vVelocity) - vm_offset_vel_base->value;
        if (fDelta > 0.0) {
            if (fDelta > 250.0 - vm_offset_vel_base->value) {
                fDelta = 250.0 - vm_offset_vel_base->value;
            }

            fPhase = fDelta / (250.0 - vm_offset_vel_base->value);
            vTargOfs[0] += fPhase * vm_offset_vel_front->value;
            vTargOfs[1] += fPhase * vm_offset_vel_side->value;
            vTargOfs[2] += fPhase * vm_offset_vel_up->value;
        }
    } else if (vVelocity[2]) {
        vTargOfs[2] -= vVelocity[2] * vm_offset_upvel->value;
    }

    for (i = 0; i < 3; i++) {
        fDelta = vTargOfs[i] - cgi.anim->g_vCurrentVMPosOffset[i];
        cgi.anim->g_vCurrentVMPosOffset[i] += cg.frametime / 1000.0 * fDelta * vm_offset_speed->value;

        if (fDelta > 0.0) {
            if (cgi.anim->g_vCurrentVMPosOffset[i] > vTargOfs[i]) {
                cgi.anim->g_vCurrentVMPosOffset[i] = vTargOfs[i];
            }
        } else if (fDelta < 0.0) {
            if (cgi.anim->g_vCurrentVMPosOffset[i] < vTargOfs[i]) {
                cgi.anim->g_vCurrentVMPosOffset[i] = vTargOfs[i];
            }
        }
    }

    VectorAdd(vMovement, cgi.anim->g_vCurrentVMPosOffset, vMovement);
    if (cg.predicted_player_state.fLeanAngle) {
        vMovement[2] -= fabs(cg.predicted_player_state.fLeanAngle) * vm_lean_lower->value;
    }

    if (VectorNormalize2(vMovement, vNorm) > vm_offset_max->value) {
        VectorScale(vNorm, vm_offset_max->value, vMovement);
    }
}