extern int gmsgCustomDecal;

void UTIL_CustomDecal( TraceResult *pTrace, const char *name, int persistent /* =0 */ )
{
    if (pTrace->flFraction == 1.0)
        return;

    if ( pTrace->pHit )
    {
        int idx = ENTINDEX( pTrace->pHit );
    //  ALERT(at_console, "%d\n", idx);
        if (idx)
            return;
    }

//  ALERT(at_console, "sent\n");

    MESSAGE_BEGIN( MSG_BROADCAST, gmsgCustomDecal );
        WRITE_COORD( pTrace->vecEndPos.x );
        WRITE_COORD( pTrace->vecEndPos.y );
        WRITE_COORD( pTrace->vecEndPos.z );
        WRITE_COORD( pTrace->vecPlaneNormal.x );
        WRITE_COORD( pTrace->vecPlaneNormal.y );
        WRITE_COORD( pTrace->vecPlaneNormal.z );
        WRITE_BYTE( persistent );
        WRITE_STRING( name );
    MESSAGE_END();
}

void UTIL_BloodDecalTrace( TraceResult *pTrace, int bloodColor )
{
    if ( UTIL_ShouldShowBlood( bloodColor ) )
    {
        if ( bloodColor == BLOOD_COLOR_RED )
        {
            UTIL_DecalTrace( pTrace, DECAL_BLOOD1 + RANDOM_LONG(0,5) );
            UTIL_CustomDecal( pTrace, "redblood" );
        }
        else
        {
            UTIL_DecalTrace( pTrace, DECAL_YBLOOD1 + RANDOM_LONG(0,5) );
            UTIL_CustomDecal( pTrace, "yellowblood" );
        }
    }
}


void UTIL_DecalTrace( TraceResult *pTrace, int decalNumber )
{
    short entityIndex;
    int index;
    int message;

    if ( decalNumber < 0 )
        return;

    index = gDecals[ decalNumber ].index;

    if ( index < 0 )
        return;

    if (pTrace->flFraction == 1.0)
        return;

    // buz: also paint custom decal
    if (decalNumber == DECAL_SCORCH1 || decalNumber == DECAL_SCORCH2)
    {
        UTIL_CustomDecal( pTrace, "scorch" );
    }

    // Only decal BSP models
    if ( pTrace->pHit )
    {
        CBaseEntity *pEntity = CBaseEntity::Instance( pTrace->pHit );
        if ( pEntity && !pEntity->IsBSPModel() )
            return;
        entityIndex = ENTINDEX( pTrace->pHit );
    }
    else
        entityIndex = 0;

    message = TE_DECAL;
    if ( entityIndex != 0 )
    {
        if ( index > 255 )
        {
            message = TE_DECALHIGH;
            index -= 256;
        }
    }
    else
    {
        message = TE_WORLDDECAL;
        if ( index > 255 )
        {
            message = TE_WORLDDECALHIGH;
            index -= 256;
        }
    }

    MESSAGE_BEGIN( MSG_BROADCAST, SVC_TEMPENTITY );
        WRITE_BYTE( message );
        WRITE_COORD( pTrace->vecEndPos.x );
        WRITE_COORD( pTrace->vecEndPos.y );
        WRITE_COORD( pTrace->vecEndPos.z );
        WRITE_BYTE( index );
        if ( entityIndex )
            WRITE_SHORT( entityIndex );
    MESSAGE_END();
}

/*
==============
UTIL_PlayerDecalTrace

A player is trying to apply his custom decal for the spray can.
Tell connected clients to display it, or use the default spray can decal
if the custom can't be loaded.
==============
*/
void UTIL_PlayerDecalTrace( TraceResult *pTrace, int playernum, int decalNumber, BOOL bIsCustom )
{
    int index;

    if (!bIsCustom)
    {
        if ( decalNumber < 0 )
            return;

        index = gDecals[ decalNumber ].index;
        if ( index < 0 )
            return;
    }
    else
        index = decalNumber;

    if (pTrace->flFraction == 1.0)
        return;

    MESSAGE_BEGIN( MSG_BROADCAST, SVC_TEMPENTITY );
        WRITE_BYTE( TE_PLAYERDECAL );
        WRITE_BYTE ( playernum );
        WRITE_COORD( pTrace->vecEndPos.x );
        WRITE_COORD( pTrace->vecEndPos.y );
        WRITE_COORD( pTrace->vecEndPos.z );
        WRITE_SHORT( (short)ENTINDEX(pTrace->pHit) );
        WRITE_BYTE( index );
    MESSAGE_END();
}

void UTIL_GunshotDecalTrace( TraceResult *pTrace, int decalNumber )
{
    if ( decalNumber < 0 )
        return;

    int index = gDecals[ decalNumber ].index;
    if ( index < 0 )
        return;

    if (pTrace->flFraction == 1.0)
        return;

    MESSAGE_BEGIN( MSG_PAS, SVC_TEMPENTITY, pTrace->vecEndPos );
        WRITE_BYTE( TE_GUNSHOTDECAL );
        WRITE_COORD( pTrace->vecEndPos.x );
        WRITE_COORD( pTrace->vecEndPos.y );
        WRITE_COORD( pTrace->vecEndPos.z );
        WRITE_SHORT( (short)ENTINDEX(pTrace->pHit) );
        WRITE_BYTE( index );
    MESSAGE_END();
}