Team Fortress 2 Source Code as on 22/4/2020
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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: A blood spray effect to expose successful hits.
//
//=============================================================================//
#include "cbase.h"
#include "clienteffectprecachesystem.h"
#include "fx_sparks.h"
#include "iefx.h"
#include "c_te_effect_dispatch.h"
#include "particles_ez.h"
#include "decals.h"
#include "engine/IEngineSound.h"
#include "fx_quad.h"
#include "engine/ivdebugoverlay.h"
#include "shareddefs.h"
#include "fx_blood.h"
#include "view.h"
#include "c_cs_player.h"
CLIENTEFFECT_REGISTER_BEGIN( PrecacheEffectCSBloodSpray )
CLIENTEFFECT_MATERIAL( "effects/blood_gore" )
CLIENTEFFECT_MATERIAL( "effects/blood_drop" )
CLIENTEFFECT_MATERIAL( "effects/blood_puff" )
CLIENTEFFECT_REGISTER_END()
class CHitEffectRamp
{
public:
float m_flDamageAmount;
float m_flMinAlpha;
float m_flMaxAlpha;
float m_flMinSize;
float m_flMaxSize;
float m_flMinVelocity;
float m_flMaxVelocity;
};
void InterpolateRamp(
const CHitEffectRamp &a,
const CHitEffectRamp &b,
CHitEffectRamp &out,
int iDamage )
{
float t = RemapVal( iDamage, a.m_flDamageAmount, b.m_flDamageAmount, 0, 1 );
out.m_flMinAlpha = FLerp( a.m_flMinAlpha, b.m_flMinAlpha, t );
out.m_flMaxAlpha = FLerp( a.m_flMaxAlpha, b.m_flMaxAlpha, t );
out.m_flMinAlpha = clamp( out.m_flMinAlpha, 0, 255 );
out.m_flMaxAlpha = clamp( out.m_flMaxAlpha, 0, 255 );
out.m_flMinSize = FLerp( a.m_flMinSize, b.m_flMinSize, t );
out.m_flMaxSize = FLerp( a.m_flMaxSize, b.m_flMaxSize, t );
out.m_flMinVelocity = FLerp( a.m_flMinVelocity, b.m_flMinVelocity, t );
out.m_flMaxVelocity = FLerp( a.m_flMaxVelocity, b.m_flMaxVelocity, t );
}
void FX_HitEffectSmoke(
CSmartPtr<CBloodSprayEmitter> pEmitter,
int iDamage,
const Vector &vEntryPoint,
const Vector &vDirection,
float flScale)
{
SimpleParticle newParticle;
PMaterialHandle hMaterial = ParticleMgr()->GetPMaterial( "effects/blood_gore" );
// These parameters create a ramp based on how much damage the shot did.
CHitEffectRamp ramps[2] =
{
{
0,
30, // min/max alpha
70,
0.5, // min/max size
1,
0, // min/max velocity (not used here)
0
},
{
50,
30, // min/max alpha
70,
1, // min/max size
2,
0, // min/max velocity (not used here)
0
}
};
CHitEffectRamp interpolatedRamp;
InterpolateRamp(
ramps[0],
ramps[1],
interpolatedRamp,
iDamage );
for ( int i=0; i < 2; i++ )
{
SimpleParticle &newParticle = *pEmitter->AddSimpleParticle( hMaterial, vEntryPoint, 0, 0 );
newParticle.m_flLifetime = 0.0f;
newParticle.m_flDieTime = 3.0f;
newParticle.m_uchStartSize = random->RandomInt(
interpolatedRamp.m_flMinSize,
interpolatedRamp.m_flMaxSize ) * flScale;
newParticle.m_uchEndSize = newParticle.m_uchStartSize * 4;
newParticle.m_vecVelocity = Vector( 0, 0, 5 ) + RandomVector( -2, 2 );
newParticle.m_uchStartAlpha = random->RandomInt(
interpolatedRamp.m_flMinSize,
interpolatedRamp.m_flMaxSize );
newParticle.m_uchEndAlpha = 0;
newParticle.m_flRoll = random->RandomFloat( 0, 360 );
newParticle.m_flRollDelta = random->RandomFloat( -1, 1 );
newParticle.m_iFlags = SIMPLE_PARTICLE_FLAG_NO_VEL_DECAY;
float colorRamp = random->RandomFloat( 0.5f, 1.25f );
newParticle.m_uchColor[0] = MIN( 1.0f, colorRamp ) * 255.0f;
newParticle.m_uchColor[1] = MIN( 1.0f, colorRamp ) * 255.0f;
newParticle.m_uchColor[2] = MIN( 1.0f, colorRamp ) * 255.0f;
}
}
void FX_HitEffectBloodSpray(
CSmartPtr<CBloodSprayEmitter> pEmitter,
int iDamage,
const Vector &vEntryPoint,
const Vector &vSprayNormal,
const char *pMaterialName,
float flLODDistance,
float flDistanceScale,
float flScale,
float flSpeed )
{
PMaterialHandle hMaterial = ParticleMgr()->GetPMaterial( pMaterialName );
SimpleParticle *pParticle;
float color[3] = { 1.0, 0, 0 };
Vector up( 0, 0, 1 );
Vector right = up.Cross( vSprayNormal );
VectorNormalize( right );
// These parameters create a ramp based on how much damage the shot did.
CHitEffectRamp ramps[2] =
{
{
0,
80, // min/max alpha
128,
flScale/2,// min/max size
flScale,
10, // min/max velocity
20
},
{
50,
80, // min/max alpha
128,
flScale/2,// min/max size
flScale,
30, // min/max velocity
60
}
};
CHitEffectRamp interpolatedRamp;
InterpolateRamp(
ramps[0],
ramps[1],
interpolatedRamp,
iDamage );
for ( int i = 0; i < 6; i++ )
{
// Originate from within a circle '2 * scale' inches in diameter.
Vector offset = vEntryPoint + ( flScale * vSprayNormal * 0.5 );
offset += right * random->RandomFloat( -1, 1 ) * flScale;
offset += up * random->RandomFloat( -1, 1 ) * flScale;
pParticle = pEmitter->AddSimpleParticle( hMaterial, offset, 0, 0 );
if ( pParticle != NULL )
{
pParticle->m_flLifetime = 0.0f;
pParticle->m_flDieTime = random->RandomFloat( 0.7f, 1.3f);
// All the particles are between red and white. The whiter the particle is, the slower it goes.
float whiteness = random->RandomFloat( 0.1, 0.7 );
float speedFactor = 1 - whiteness;
float spread = 0.5f;
pParticle->m_vecVelocity.Random( -spread, spread );
pParticle->m_vecVelocity += vSprayNormal * random->RandomInt( interpolatedRamp.m_flMinVelocity, interpolatedRamp.m_flMaxVelocity ) * flSpeed * speedFactor;
float colorRamp = random->RandomFloat( 0.5f, 0.75f ) + flLODDistance;
pParticle->m_uchColor[0] = MIN( 1.0f, color[0] * colorRamp ) * 255.0f;
pParticle->m_uchColor[1] = MIN( 1.0f, whiteness * colorRamp ) * 255.0f;
pParticle->m_uchColor[2] = MIN( 1.0f, whiteness * colorRamp ) * 255.0f;
pParticle->m_uchStartSize = random->RandomFloat( interpolatedRamp.m_flMinSize, interpolatedRamp.m_flMaxSize ) * flDistanceScale;
pParticle->m_uchEndSize = pParticle->m_uchStartSize * 4 * flDistanceScale;
pParticle->m_uchStartAlpha = random->RandomInt( interpolatedRamp.m_flMinAlpha, interpolatedRamp.m_flMaxAlpha );
pParticle->m_uchEndAlpha = 0;
pParticle->m_flRoll = random->RandomInt( 0, 360 );
pParticle->m_flRollDelta = random->RandomFloat( -4.0f, 4.0f );
}
}
}
void FX_HitEffectBloodSplatter(
CSmartPtr<CBloodSprayEmitter> pTrailEmitter,
int iDamage,
const Vector &vExitPoint,
const Vector &vSplatterNormal,
float flLODDistance )
{
float flScale = 4;
pTrailEmitter->SetSortOrigin( vExitPoint );
PMaterialHandle hMaterial = ParticleMgr()->GetPMaterial( "effects/blood_drop" );
Vector up( 0, 0, 1 );
Vector right = up.Cross( vSplatterNormal );
VectorNormalize( right );
// These parameters create a ramp based on how much damage the shot did.
CHitEffectRamp ramps[2] =
{
{
0,
0, // min/max alpha
75,
1.5f, // min/max size
2.0f,
25.0f * flScale, // min/max velocity
35.0f * flScale
},
{
50,
0, // min/max alpha
140,
1.5f,// min/max size
2.0f,
65.0f * flScale, // min/max velocity
75.0f * flScale
}
};
CHitEffectRamp interpolatedRamp;
InterpolateRamp(
ramps[0],
ramps[1],
interpolatedRamp,
iDamage );
for ( int i = 0; i < 20; i++ )
{
// Originate from within a circle 'scale' inches in diameter.
Vector offset = vExitPoint;
offset += right * random->RandomFloat( -0.15f, 0.15f ) * flScale;
offset += up * random->RandomFloat( -0.15f, 0.15f ) * flScale;
SimpleParticle *tParticle = (SimpleParticle*)pTrailEmitter->AddSimpleParticle(
hMaterial,
vExitPoint,
random->RandomFloat( 0.225f, 0.35f ),
random->RandomFloat( interpolatedRamp.m_flMinSize, interpolatedRamp.m_flMaxSize )
);
if ( tParticle == NULL )
break;
Vector offDir = vSplatterNormal + RandomVector( -0.05f, 0.05f );
tParticle->m_vecVelocity = offDir * random->RandomFloat( interpolatedRamp.m_flMinVelocity, interpolatedRamp.m_flMaxVelocity );
tParticle->m_iFlags = SIMPLE_PARTICLE_FLAG_NO_VEL_DECAY;
tParticle->m_uchColor[0] = 150;
tParticle->m_uchColor[1] = 0;
tParticle->m_uchColor[2] = 0;
tParticle->m_uchStartAlpha = interpolatedRamp.m_flMaxAlpha / 2;
tParticle->m_uchEndAlpha = 0;
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : origin -
// normal -
// scale -
//-----------------------------------------------------------------------------
void FX_CS_BloodSpray( const Vector &origin, const Vector &normal, float flDamage )
{
if ( UTIL_IsLowViolence() )
return;
static ConVar *violence_hblood = cvar->FindVar( "violence_hblood" );
if ( violence_hblood && !violence_hblood->GetBool() )
return;
Vector offset;
int i;
float r = 64;
float g = 0;
float b = 4;
float scale = 0.5 + clamp( flDamage/50.f, 0.0, 1.0 ) ;
//Find area ambient light color and use it to tint smoke
Vector worldLight = WorldGetLightForPoint( origin, true );
Vector color = Vector( (float)(worldLight[0] * r) / 255.0f, (float)(worldLight[1] * g) / 255.0f, (float)(worldLight[2] * b) / 255.0f );
float colorRamp;
Vector offDir;
CSmartPtr<CBloodSprayEmitter> pSimple = CBloodSprayEmitter::Create( "bloodgore" );
if ( !pSimple )
return;
pSimple->SetSortOrigin( origin );
pSimple->SetGravity( 0 );
// Blood impact
PMaterialHandle hMaterial = ParticleMgr()->GetPMaterial( "effects/blood_core" );
SimpleParticle *pParticle;
Vector dir = normal * RandomVector( -0.5f, 0.5f );
offset = origin + ( 2.0f * normal );
pParticle = (SimpleParticle *) pSimple->AddParticle( sizeof( SimpleParticle ), hMaterial, offset );
if ( pParticle != NULL )
{
pParticle->m_flLifetime = 0.0f;
pParticle->m_flDieTime = 0.75f;
pParticle->m_vecVelocity = dir * random->RandomFloat( 16.0f, 32.0f );
pParticle->m_vecVelocity[2] -= random->RandomFloat( 8.0f, 16.0f );
colorRamp = random->RandomFloat( 0.75f, 2.0f );
pParticle->m_uchColor[0] = MIN( 1.0f, color[0] * colorRamp ) * 255.0f;
pParticle->m_uchColor[1] = MIN( 1.0f, color[1] * colorRamp ) * 255.0f;
pParticle->m_uchColor[2] = MIN( 1.0f, color[2] * colorRamp ) * 255.0f;
pParticle->m_uchStartSize = 8;
pParticle->m_uchEndSize = 32;
pParticle->m_uchStartAlpha = 255;
pParticle->m_uchEndAlpha = 0;
pParticle->m_flRoll = random->RandomInt( 0, 360 );
pParticle->m_flRollDelta = 0;
}
hMaterial = ParticleMgr()->GetPMaterial( "effects/blood_gore" );
for ( i = 0; i < 4; i++ )
{
offset = origin + ( 2.0f * normal );
pParticle = (SimpleParticle *) pSimple->AddParticle( sizeof( SimpleParticle ), hMaterial, offset );
if ( pParticle != NULL )
{
pParticle->m_flLifetime = 0.0f;
pParticle->m_flDieTime = random->RandomFloat( 0.75f, 1.0f);
pParticle->m_vecVelocity = dir * random->RandomFloat( 16.0f, 32.0f )*(i+1);
pParticle->m_vecVelocity[2] -= random->RandomFloat( 16.0f, 32.0f )*(i+1);
colorRamp = random->RandomFloat( 0.75f, 2.0f );
pParticle->m_uchColor[0] = MIN( 1.0f, color[0] * colorRamp ) * 255.0f;
pParticle->m_uchColor[1] = MIN( 1.0f, color[1] * colorRamp ) * 255.0f;
pParticle->m_uchColor[2] = MIN( 1.0f, color[2] * colorRamp ) * 255.0f;
pParticle->m_uchStartSize = scale * random->RandomInt( 4, 8 );
pParticle->m_uchEndSize = pParticle->m_uchStartSize * 4;
pParticle->m_uchStartAlpha = 255;
pParticle->m_uchEndAlpha = 0;
pParticle->m_flRoll = random->RandomInt( 0, 360 );
pParticle->m_flRollDelta = 0;
}
}
//
// Dump out drops
//
TrailParticle *tParticle;
CSmartPtr<CTrailParticles> pTrailEmitter = CTrailParticles::Create( "blooddrops" );
if ( !pTrailEmitter )
return;
pTrailEmitter->SetSortOrigin( origin );
// Partial gravity on blood drops
pTrailEmitter->SetGravity( 400.0 );
// Enable simple collisions with nearby surfaces
pTrailEmitter->Setup(origin, &normal, 1, 10, 100, 400, 0.2, 0 );
hMaterial = ParticleMgr()->GetPMaterial( "effects/blood_drop" );
//
// Shorter droplets
//
for ( i = 0; i < 32; i++ )
{
// Originate from within a circle 'scale' inches in diameter
offset = origin;
tParticle = (TrailParticle *) pTrailEmitter->AddParticle( sizeof(TrailParticle), hMaterial, offset );
if ( tParticle == NULL )
break;
tParticle->m_flLifetime = 0.0f;
offDir = RandomVector( -1.0f, 1.0f );
tParticle->m_vecVelocity = offDir * random->RandomFloat( 32.0f, 128.0f );
tParticle->m_flWidth = scale * random->RandomFloat( 1.0f, 3.0f );
tParticle->m_flLength = random->RandomFloat( 0.1f, 0.15f );
tParticle->m_flDieTime = random->RandomFloat( 0.5f, 1.0f );
FloatToColor32( tParticle->m_color, color[0], color[1], color[2], 1.0f );
}
}
//-----------------------------------------------------------------------------
// Purpose:
// Input : bloodtype -
// r -
// g -
// b -
//-----------------------------------------------------------------------------
void GetBloodColorForTeam( int iTeam, unsigned char &r, unsigned char &g, unsigned char &b )
{
}
//-----------------------------------------------------------------------------
// Purpose: Intercepts the blood spray message.
//-----------------------------------------------------------------------------
void CSBloodSprayCallback( const CEffectData &data )
{
FX_CS_BloodSpray( data.m_vOrigin, data.m_vNormal, data.m_flMagnitude );
}
DECLARE_CLIENT_EFFECT( "csblood", CSBloodSprayCallback );