Singleplayer Crossbow Bolts

[ampreeT]

mp causes crossbow to be automatic. also sets unzoomed bolts to be explosive and zoomed bolts to be normal.

possible solution:

• hook bolt spawn and set bolt to zoomed type
• hook weapon think and modify firerate

[ampreeT]

From what I've seen, we may need to hook a few functions. The following functions are candidates for hooking as they call pGameRules->IsMultiplayer().

CBlackMesaBaseWeaponIronSights::ToggleIronSights
CWeapon_Crossbow::FireBolt
CWeapon_Crossbow::Deploy
CWeapon_Crossbow::GetPrimaryAttackActivity
CWeapon_Crossbow::PrimaryAttack
CWeapon_Crossbow::ItemPostFrame
CWeapon_Crossbow::WeaponIdle

[ampreeT]

CWeapon_Crossbow::FireBolt spawns either entity factory tracerbullet or grenade_bolt depending on whether if it is singleplayer or multiplayer. I believe the first argument of the virtual function CWeapon_Crossbow::FireBolt sets explosive bolts.

CWeapon_Crossbow::PrimaryAttack calls into CWeapon_Crossbow::FireBolt or CWeapon_Crossbow::FireHitscanBolt depending on if it is multiplayer and/or in ironsights.

Linux Disassembly (note that the variables towards the bottom of the function are wrongly named due to being reused):

void __thiscall CWeapon_Crossbow::PrimaryAttack(CWeapon_Crossbow *this)

{
  ushort uVar1;
  ushort uVar2;
  ushort uVar3;
  uint *puVar4;
  bool bVar5;
  ushort *puVar6;
  bool bIsMultiplayer;
  undefined bExplosive;
  CBlackMesaPlayer *pPlayer;
  int iAttackMode;
  undefined4 iAttackActivity;
  char bIsMultiplayer1;
  int iVar7;
  int *piVar8;
  ushort *puVar9;
  ushort *puVar10;
  undefined4 uVar11;
  longdouble lVar12;
  longdouble lVar13;
  float fVar14;
  bool bIsValidEntity;
  code *pfnSequenceDuration;
  
  pPlayer = (CBlackMesaPlayer *)CBlackMesaBaseWeapon::GetBlackMesaPlayer(this);
  if (pPlayer == (CBlackMesaPlayer *)0x0) {
    return;
  }
  iAttackMode = (*(code *)this->vftable->GetCurrentAttackMode)(this);
  if (iAttackMode == 0) {
    pfnSequenceDuration = (code *)this->vftable->FireBolt;
    bExplosive = (**(code **)(*g_pGameRules + 0x8c))(g_pGameRules);
    bIsValidEntity = (bool)(*pfnSequenceDuration)(this,bExplosive);
  }
  else if (iAttackMode == 1) {
    bIsMultiplayer1 = (**(code **)(*g_pGameRules + 0x8c))(g_pGameRules);
    if (bIsMultiplayer1 == '\0') {
      bIsValidEntity = (bool)(*(code *)this->vftable->FireBolt)(this,0);
    }
    else {
      bIsValidEntity = (bool)(*(code *)this->vftable->FireHitscanBolt)(this);
    }
  }
  else {
    bIsValidEntity = false;
  }
  uVar11 = 1;
  if (*(int *)&this->field_0x4e8 < 1) {
    uVar11 = 0xb;
  }
  iAttackActivity = (*(code *)this->vftable->GetPrimaryAttackActivity)(this);
  bIsMultiplayer = (bool)(**(code **)(*g_pGameRules + 0x8c))(g_pGameRules);
  if ((bIsMultiplayer == false) &&
     (bVar5 = 0 < *(int *)&this->field_0x4e8, bVar5 != this->m_bNeedsToRearm)) {
    if (this->field_0x5c == '\0') {
      puVar4 = *(uint **)&this->field_0x20;
      if ((puVar4 != (uint *)0x0) && ((*puVar4 & 0x100) == 0)) {
        *puVar4 = *puVar4 | 1;
        puVar9 = (ushort *)CBaseEdict::GetChangeAccessor(puVar4);
        puVar6 = g_pSharedChangeInfo;
        if (puVar9[1] == *g_pSharedChangeInfo) {
          uVar2 = *puVar9;
          uVar3 = g_pSharedChangeInfo[(uint)uVar2 * 0x14 + 0x14];
          if (uVar3 == 0) {
LAB_003299fc:
            g_pSharedChangeInfo[(uint)uVar2 * 0x14 + 0x14] = uVar3 + 1;
            puVar6[(uint)uVar2 * 0x14 + uVar3 + 1] = 0x5bc;
          }
          else if (g_pSharedChangeInfo[(uint)uVar2 * 0x14 + 1] != 0x5bc) {
            puVar10 = g_pSharedChangeInfo + (uint)uVar2 * 0x14 + 2;
            do {
              if (puVar10 == g_pSharedChangeInfo + (uint)uVar2 * 0x14 + 2 + (uVar3 - 1 & 0xffff)) {
                if (uVar3 != 0x13) goto LAB_003299fc;
                goto LAB_00329a23;
              }
              uVar1 = *puVar10;
              puVar10 = puVar10 + 1;
            } while (uVar1 != 0x5bc);
          }
        }
        else if (g_pSharedChangeInfo[0x7d1] == 100) {
LAB_00329a23:
          puVar9[1] = 0;
          *puVar4 = *puVar4 | 0x100;
        }
        else {
          *puVar9 = g_pSharedChangeInfo[0x7d1];
          puVar6 = g_pSharedChangeInfo;
          g_pSharedChangeInfo[0x7d1] = g_pSharedChangeInfo[0x7d1] + 1;
          puVar9[1] = *puVar6;
          puVar6 = g_pSharedChangeInfo;
          uVar2 = *puVar9;
          g_pSharedChangeInfo[(uint)uVar2 * 0x14 + 1] = 0x5bc;
          puVar6[(uint)uVar2 * 0x14 + 0x14] = 1;
        }
      }
    }
    else {
      this->field_0x60 = this->field_0x60 | 1;
    }
    this->m_bNeedsToRearm = bVar5;
  }
  if (bIsValidEntity == false) goto failed_to_create_bolt_or_normal;
  (*(code *)this->vftable->WeaponSound_1)(this,uVar11,0);
  (*(code *)this->vftable->SendWeaponAnim)(this,iAttackActivity);
  lVar12 = (longdouble)(*(code *)this->vftable->GetFireRate)(this,iAttackMode);
  uVar11 = *(undefined4 *)&this->m_nSequence;
  pfnSequenceDuration = (code *)this->vftable->SequenceDuration;
  if (this->field_0x345 == '\0') {
    piVar8 = *(int **)&this->field_0x488;
    if (piVar8 == (int *)0x0) {
      iVar7 = CBaseEntity::GetModel(this);
      if (iVar7 == 0) {
        piVar8 = *(int **)&this->field_0x488;
      }
      else {
        CBaseAnimating::LockStudioHdr(this);
        piVar8 = *(int **)&this->field_0x488;
      }
      if (piVar8 == (int *)0x0) goto LAB_0032982e;
    }
    if (*piVar8 == 0) goto LAB_0032982e;
  }
  else {
LAB_0032982e:
    piVar8 = (int *)0x0;
  }
  lVar13 = (longdouble)(*pfnSequenceDuration)(this,piVar8,uVar11);
  if ((float)lVar12 <= (float)lVar13) {
    uVar11 = *(undefined4 *)&this->m_nSequence;
    pfnSequenceDuration = (code *)this->vftable->SequenceDuration;
    if (this->field_0x345 == '\0') {
      piVar8 = *(int **)&this->field_0x488;
      if (piVar8 == (int *)0x0) {
        iVar7 = CBaseEntity::GetModel(this);
        if (iVar7 == 0) {
          piVar8 = *(int **)&this->field_0x488;
        }
        else {
          CBaseAnimating::LockStudioHdr(this);
          piVar8 = *(int **)&this->field_0x488;
        }
        if (piVar8 == (int *)0x0) goto LAB_003298b7;
      }
      if (*piVar8 == 0) goto LAB_003298b7;
    }
    else {
LAB_003298b7:
      piVar8 = (int *)0x0;
    }
    lVar12 = (longdouble)(*pfnSequenceDuration)(this,piVar8,uVar11);
  }
  else {
    lVar12 = (longdouble)(*(code *)this->vftable->GetFireRate)(this,iAttackMode);
  }
  fVar14 = *(float *)(gpGlobals + 0xc);
  if (iAttackMode == 0) {
    CBlackMesaBaseWeapon::SetNextPrimaryAttack
              ((CBlackMesaBaseWeapon *)this,(float)lVar12 + fVar14,false);
    fVar14 = *(float *)(gpGlobals + 0xc);
  }
  else if (iAttackMode == 1) {
    CBlackMesaBaseWeapon::SetNextSecondaryAttack
              ((CBlackMesaBaseWeapon *)this,(float)lVar12 + fVar14,false);
    fVar14 = *(float *)(gpGlobals + 0xc);
  }
  (*(code *)this->vftable->SetWeaponIdleTime)(this,fVar14);
                    /* 0x3f800000 == float(1.0) (can't retype) */
  (*(code *)this->vftable->AddViewKick_1)(this,iAttackMode,0x3f800000);
  CBaseAnimating::DoMuzzleFlash(this);
failed_to_create_bolt_or_normal:
  bIsMultiplayer1 = (**(code **)(*g_pGameRules + 0x8c))(g_pGameRules);
  if (((bIsMultiplayer1 != '\0') &&
      (bIsMultiplayer1 = (*(code *)this->vftable->InIronsights)(this), bIsMultiplayer1 != '\0')) &&
     (iAttackMode = (*(code *)this->vftable->Clip1)(this), 0 < iAttackMode)) {
    CBlackMesaBaseWeaponIronSights::ToggleIronSights(this);
  }
  (*(code *)pPlayer->vftable->OnMyWeaponFired)(pPlayer,this);
  return;
}