source-engine/game/shared/cstrike/weapon_knife.cpp

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2020-04-22 16:56:21 +00:00
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "cbase.h"
#include "weapon_knife.h"
#include "cs_gamerules.h"
#if defined( CLIENT_DLL )
#include "c_cs_player.h"
#else
#include "cs_player.h"
#include "ilagcompensationmanager.h"
#include "cs_gamestats.h"
#endif
#define KNIFE_BODYHIT_VOLUME 128
#define KNIFE_WALLHIT_VOLUME 512
Vector head_hull_mins( -16, -16, -18 );
Vector head_hull_maxs( 16, 16, 18 );
#ifndef CLIENT_DLL
//-----------------------------------------------------------------------------
// Purpose: Only send to local player if this weapon is the active weapon
// Input : *pStruct -
// *pVarData -
// *pRecipients -
// objectID -
// Output : void*
//-----------------------------------------------------------------------------
void* SendProxy_SendActiveLocalKnifeDataTable( const SendProp *pProp, const void *pStruct, const void *pVarData, CSendProxyRecipients *pRecipients, int objectID )
{
// Get the weapon entity
CBaseCombatWeapon *pWeapon = (CBaseCombatWeapon*)pVarData;
if ( pWeapon )
{
// Only send this chunk of data to the player carrying this weapon
CBasePlayer *pPlayer = ToBasePlayer( pWeapon->GetOwner() );
if ( pPlayer /*&& pPlayer->GetActiveWeapon() == pWeapon*/ )
{
pRecipients->SetOnly( pPlayer->GetClientIndex() );
return (void*)pVarData;
}
}
return NULL;
}
REGISTER_SEND_PROXY_NON_MODIFIED_POINTER( SendProxy_SendActiveLocalKnifeDataTable );
#endif
// ----------------------------------------------------------------------------- //
// CKnife tables.
// ----------------------------------------------------------------------------- //
IMPLEMENT_NETWORKCLASS_ALIASED( Knife, DT_WeaponKnife )
BEGIN_NETWORK_TABLE_NOBASE( CKnife, DT_LocalActiveWeaponKnifeData )
#if !defined( CLIENT_DLL )
SendPropTime( SENDINFO( m_flSmackTime ) ),
#else
RecvPropTime( RECVINFO( m_flSmackTime ) ),
#endif
END_NETWORK_TABLE()
BEGIN_NETWORK_TABLE( CKnife, DT_WeaponKnife )
#if !defined( CLIENT_DLL )
SendPropDataTable("LocalActiveWeaponKnifeData", 0, &REFERENCE_SEND_TABLE(DT_LocalActiveWeaponKnifeData), SendProxy_SendActiveLocalKnifeDataTable ),
#else
RecvPropDataTable("LocalActiveWeaponKnifeData", 0, 0, &REFERENCE_RECV_TABLE(DT_LocalActiveWeaponKnifeData)),
#endif
END_NETWORK_TABLE()
#if defined CLIENT_DLL
BEGIN_PREDICTION_DATA( CKnife )
DEFINE_PRED_FIELD( m_flSmackTime, FIELD_FLOAT, FTYPEDESC_INSENDTABLE ),
END_PREDICTION_DATA()
#endif
LINK_ENTITY_TO_CLASS( weapon_knife, CKnife );
PRECACHE_WEAPON_REGISTER( weapon_knife );
#ifndef CLIENT_DLL
BEGIN_DATADESC( CKnife )
DEFINE_THINKFUNC( Smack )
END_DATADESC()
#endif
// ----------------------------------------------------------------------------- //
// CKnife implementation.
// ----------------------------------------------------------------------------- //
CKnife::CKnife()
{
}
bool CKnife::HasPrimaryAmmo()
{
return true;
}
bool CKnife::CanBeSelected()
{
return true;
}
void CKnife::Precache()
{
BaseClass::Precache();
PrecacheScriptSound( "Weapon_Knife.Deploy" );
PrecacheScriptSound( "Weapon_Knife.Slash" );
PrecacheScriptSound( "Weapon_Knife.Stab" );
PrecacheScriptSound( "Weapon_Knife.Hit" );
}
void CKnife::Spawn()
{
Precache();
m_iClip1 = -1;
BaseClass::Spawn();
}
bool CKnife::Deploy()
{
CPASAttenuationFilter filter( this );
filter.UsePredictionRules();
EmitSound( filter, entindex(), "Weapon_Knife.Deploy" );
return BaseClass::Deploy();
}
void CKnife::Holster( int skiplocal )
{
if ( GetPlayerOwner() )
{
GetPlayerOwner()->m_flNextAttack = gpGlobals->curtime + 0.5;
}
}
void CKnife::WeaponAnimation ( int iAnimation )
{
/*
int flag;
#if defined( CLIENT_WEAPONS )
flag = FEV_NOTHOST;
#else
flag = 0;
#endif
PLAYBACK_EVENT_FULL( flag, pPlayer->edict(), m_usKnife,
0.0, (float *)&g_vecZero, (float *)&g_vecZero,
0.0,
0.0,
iAnimation, 2, 3, 4 );
*/
}
void FindHullIntersection( const Vector &vecSrc, trace_t &tr, const Vector &mins, const Vector &maxs, CBaseEntity *pEntity )
{
int i, j, k;
float distance;
Vector minmaxs[2] = {mins, maxs};
trace_t tmpTrace;
Vector vecHullEnd = tr.endpos;
Vector vecEnd;
distance = 1e6f;
vecHullEnd = vecSrc + ((vecHullEnd - vecSrc)*2);
UTIL_TraceLine( vecSrc, vecHullEnd, MASK_SOLID, pEntity, COLLISION_GROUP_NONE, &tmpTrace );
if ( tmpTrace.fraction < 1.0 )
{
tr = tmpTrace;
return;
}
for ( i = 0; i < 2; i++ )
{
for ( j = 0; j < 2; j++ )
{
for ( k = 0; k < 2; k++ )
{
vecEnd.x = vecHullEnd.x + minmaxs[i][0];
vecEnd.y = vecHullEnd.y + minmaxs[j][1];
vecEnd.z = vecHullEnd.z + minmaxs[k][2];
UTIL_TraceLine( vecSrc, vecEnd, MASK_SOLID, pEntity, COLLISION_GROUP_NONE, &tmpTrace );
if ( tmpTrace.fraction < 1.0 )
{
float thisDistance = (tmpTrace.endpos - vecSrc).Length();
if ( thisDistance < distance )
{
tr = tmpTrace;
distance = thisDistance;
}
}
}
}
}
}
void CKnife::PrimaryAttack()
{
CCSPlayer *pPlayer = GetPlayerOwner();
if ( pPlayer )
{
#if !defined (CLIENT_DLL)
// Move other players back to history positions based on local player's lag
lagcompensation->StartLagCompensation( pPlayer, pPlayer->GetCurrentCommand() );
#endif
SwingOrStab( false );
#if !defined (CLIENT_DLL)
lagcompensation->FinishLagCompensation( pPlayer );
#endif
}
}
void CKnife::SecondaryAttack()
{
CCSPlayer *pPlayer = GetPlayerOwner();
if ( pPlayer && !pPlayer->m_bIsDefusing && !CSGameRules()->IsFreezePeriod() )
{
#if !defined (CLIENT_DLL)
// Move other players back to history positions based on local player's lag
lagcompensation->StartLagCompensation( pPlayer, pPlayer->GetCurrentCommand() );
#endif
SwingOrStab( true );
#if !defined (CLIENT_DLL)
lagcompensation->FinishLagCompensation( pPlayer );
#endif
}
}
#include "effect_dispatch_data.h"
void CKnife::Smack( void )
{
if ( !GetPlayerOwner() )
return;
m_trHit.m_pEnt = m_pTraceHitEnt;
if ( !m_trHit.m_pEnt || (m_trHit.surface.flags & SURF_SKY) )
return;
if ( m_trHit.fraction == 1.0 )
return;
if ( m_trHit.m_pEnt )
{
CPASAttenuationFilter filter( this );
filter.UsePredictionRules();
if( m_trHit.m_pEnt->IsPlayer() )
{
EmitSound( filter, entindex(), m_bStab?"Weapon_Knife.Stab":"Weapon_Knife.Hit" );
}
else
{
EmitSound( filter, entindex(), "Weapon_Knife.HitWall" );
}
}
CEffectData data;
data.m_vOrigin = m_trHit.endpos;
data.m_vStart = m_trHit.startpos;
data.m_nSurfaceProp = m_trHit.surface.surfaceProps;
data.m_nDamageType = DMG_SLASH;
data.m_nHitBox = m_trHit.hitbox;
#ifdef CLIENT_DLL
data.m_hEntity = m_trHit.m_pEnt->GetRefEHandle();
#else
data.m_nEntIndex = m_trHit.m_pEnt->entindex();
#endif
CPASFilter filter( data.m_vOrigin );
#ifndef CLIENT_DLL
filter.RemoveRecipient( GetPlayerOwner() );
#endif
data.m_vAngles = GetPlayerOwner()->GetAbsAngles();
data.m_fFlags = 0x1; //IMPACT_NODECAL;
te->DispatchEffect( filter, 0.0, data.m_vOrigin, "KnifeSlash", data );
}
void CKnife::WeaponIdle()
{
if (m_flTimeWeaponIdle > gpGlobals->curtime)
return;
CCSPlayer *pPlayer = GetPlayerOwner();
if ( !pPlayer )
return;
if ( pPlayer->IsShieldDrawn() )
return;
SetWeaponIdleTime( gpGlobals->curtime + 20 );
// only idle if the slid isn't back
SendWeaponAnim( ACT_VM_IDLE );
}
//=============================================================================
// HPE_BEGIN:
// [tj] Hacky cheat code to control knife damage
//=============================================================================
#ifndef CLIENT_DLL
ConVar KnifeDamageScale("knife_damage_scale", "100", FCVAR_DEVELOPMENTONLY);
#endif
//=============================================================================
// HPE_END
//=============================================================================
bool CKnife::SwingOrStab( bool bStab )
{
CCSPlayer *pPlayer = GetPlayerOwner();
if ( !pPlayer )
return false;
float fRange = bStab ? 32 : 48; // knife range
Vector vForward; AngleVectors( pPlayer->EyeAngles(), &vForward );
Vector vecSrc = pPlayer->Weapon_ShootPosition();
Vector vecEnd = vecSrc + vForward * fRange;
trace_t tr;
UTIL_TraceLine( vecSrc, vecEnd, MASK_SOLID, pPlayer, COLLISION_GROUP_NONE, &tr );
//check for hitting glass - TODO - fix this hackiness, doesn't always line up with what FindHullIntersection returns
#ifndef CLIENT_DLL
CTakeDamageInfo glassDamage( pPlayer, pPlayer, 42.0f, DMG_BULLET | DMG_NEVERGIB );
TraceAttackToTriggers( glassDamage, tr.startpos, tr.endpos, vForward );
#endif
if ( tr.fraction >= 1.0 )
{
UTIL_TraceHull( vecSrc, vecEnd, head_hull_mins, head_hull_maxs, MASK_SOLID, pPlayer, COLLISION_GROUP_NONE, &tr );
if ( tr.fraction < 1.0 )
{
// Calculate the point of intersection of the line (or hull) and the object we hit
// This is and approximation of the "best" intersection
CBaseEntity *pHit = tr.m_pEnt;
if ( !pHit || pHit->IsBSPModel() )
FindHullIntersection( vecSrc, tr, VEC_DUCK_HULL_MIN, VEC_DUCK_HULL_MAX, pPlayer );
vecEnd = tr.endpos; // This is the point on the actual surface (the hull could have hit space)
}
}
bool bDidHit = tr.fraction < 1.0f;
#ifndef CLIENT_DLL
bool bFirstSwing = (m_flNextPrimaryAttack + 0.4) < gpGlobals->curtime;
#endif
float fPrimDelay, fSecDelay;
if ( bStab )
{
SendWeaponAnim( bDidHit ? ACT_VM_HITCENTER : ACT_VM_MISSCENTER );
fPrimDelay = fSecDelay = bDidHit ? 1.1f : 1.0f;
pPlayer->DoAnimationEvent( PLAYERANIMEVENT_FIRE_GUN_PRIMARY );
}
else // swing
{
SendWeaponAnim( bDidHit ? ACT_VM_HITCENTER : ACT_VM_MISSCENTER );
fPrimDelay = bDidHit ? 0.5f : 0.4f;
fSecDelay = bDidHit ? 0.5f : 0.5f;
pPlayer->DoAnimationEvent( PLAYERANIMEVENT_FIRE_GUN_SECONDARY );
}
if ( pPlayer->HasShield() )
{
fPrimDelay += 0.7f; // 0.7 seconds slower if we carry a shield
fSecDelay += 0.7f;
}
m_flNextPrimaryAttack = gpGlobals->curtime + fPrimDelay;
m_flNextSecondaryAttack = gpGlobals->curtime + fSecDelay;
SetWeaponIdleTime( gpGlobals->curtime + 2 );
if ( !bDidHit )
{
// play wiff or swish sound
CPASAttenuationFilter filter( this );
filter.UsePredictionRules();
EmitSound( filter, entindex(), "Weapon_Knife.Slash" );
}
#ifndef CLIENT_DLL
float flDamage = 0.0f;
if ( bDidHit )
{
// play thwack, smack, or dong sound
CBaseEntity *pEntity = tr.m_pEnt;
// player "shoot" animation
pPlayer->SetAnimation( PLAYER_ATTACK1 );
ClearMultiDamage();
flDamage = 42.0f;
if ( bStab )
{
flDamage = 65.0f;
if ( pEntity && pEntity->IsPlayer() )
{
Vector vTragetForward;
AngleVectors( pEntity->GetAbsAngles(), &vTragetForward );
Vector2D vecLOS = (pEntity->GetAbsOrigin() - pPlayer->GetAbsOrigin()).AsVector2D();
Vector2DNormalize( vecLOS );
float flDot = vecLOS.Dot( vTragetForward.AsVector2D() );
//Triple the damage if we are stabbing them in the back.
if ( flDot > 0.80f )
flDamage *= 3;
}
}
else
{
if ( bFirstSwing )
{
// first swing does full damage
flDamage = 20;
}
else
{
// subsequent swings do less
flDamage = 15;
}
}
//=============================================================================
// HPE_BEGIN:
// [tj] Hacky cheat to lower knife damage for testing
//=============================================================================
flDamage *= (KnifeDamageScale.GetInt() / 100.0f);
//=============================================================================
// HPE_END
//=============================================================================
CTakeDamageInfo info( pPlayer, pPlayer, flDamage, DMG_BULLET | DMG_NEVERGIB );
CalculateMeleeDamageForce( &info, vForward, tr.endpos, 1.0f/flDamage );
pEntity->DispatchTraceAttack( info, vForward, &tr );
ApplyMultiDamage();
}
CCS_GameStats.Event_KnifeUse( pPlayer, bStab, flDamage );
#endif
if ( bDidHit )
{
// delay the decal a bit
m_trHit = tr;
// Store the ent in an EHANDLE, just in case it goes away by the time we get into our think function.
m_pTraceHitEnt = tr.m_pEnt;
m_bStab = bStab; //store this so we know what hit sound to play
m_flSmackTime = gpGlobals->curtime + (bStab?0.2f:0.1f);
}
return bDidHit;
}
void CKnife::ItemPostFrame( void )
{
if( m_flSmackTime > 0 && gpGlobals->curtime > m_flSmackTime )
{
Smack();
m_flSmackTime = -1;
}
BaseClass::ItemPostFrame();
}
bool CKnife::CanDrop()
{
return false;
}