/-----------------------------------------------------------------------------
// Ability: Fire Breath
//-----------------------------------------------------------------------------
#ifdef CLIENT_DLL
#define CDOTA_Ability_Creature_Fire_Breath C_DOTA_Ability_Creature_Fire_Breath
#endif
schema class CDOTA_Ability_Creature_Fire_Breath : public CDOTABaseAbility
{
    DECLARE_ENTITY_CLASS( CDOTA_Ability_Creature_Fire_Breath, CDOTABaseAbility, "creature_fire_breath" );
public:

    void OnSpellStart( void ) OVERRIDE;

    bool OnProjectileHit( EHANDLE hTarget, const Vector &vLocation ) OVERRIDE;

#ifdef SERVER_DLL
    virtual void OnChannelThink( float flInterfClampedVal ) OVERRIDE;
#endif

public:

    int speed;
    int projectile_count;
    float rotation_angle;
    float damage;
    float radius;
    CountdownTimer ctTimer;
    Vector m_vecStartRot;
    Vector m_vecEndRot;
};


LINK_ENTITY_TO_CLASS( creature_fire_breath, CDOTA_Ability_Creature_Fire_Breath );


//-----------------------------------------------------------------------------

void CDOTA_Ability_Creature_Fire_Breath::OnSpellStart( void )
{
#ifdef SERVER_DLL
    DOTA_ABILITY_RETRIEVE_VALUE( rotation_angle );
    DOTA_ABILITY_RETRIEVE_VALUE( radius );
    DOTA_ABILITY_RETRIEVE_VALUE( speed );
    DOTA_ABILITY_RETRIEVE_VALUE( damage );
    DOTA_ABILITY_RETRIEVE_VALUE( projectile_count );

    QAngle angles = GetCaster()->GetAbsAngles();
    Vector vecFwd;
    AngleVectors( angles, &vecFwd );
    matrix3x4_t matRot;
    Vector vecRotAxis = Vector ( 0, 0, 1 );
    MatrixBuildRotationAboutAxis ( vecRotAxis, -rotation_angle/2, matRot );
    VectorRotate( vecFwd, matRot, m_vecStartRot );
    MatrixBuildRotationAboutAxis ( vecRotAxis, rotation_angle/2, matRot );
    VectorRotate( vecFwd, matRot, m_vecEndRot );

    float flTiming = GetChannelTime() / float( projectile_count );
    ctTimer.Start( flTiming );

    DOTA_EmitSound( DOTA_EMIT_SOUND_FLAGS_NEARBY | DOTA_EMIT_SOUND_FLAGS_VISIBLE, "Creature.FireBreath.Cast", GetCaster() );
#endif
}

//-----------------------------------------------------------------------------
#ifdef SERVER_DLL
void CDOTA_Ability_Creature_Fire_Breath::OnChannelThink( float flInterfClampedVal )
{
    BaseClass::OnChannelThink( flInterfClampedVal );
    if ( !ctTimer.IsElapsed() )
        return;

    ctTimer.Reset();

    Vector vDirection = VectorLerp( m_vecStartRot, m_vecEndRot, RemapValClamped( GetGameTime(), GetChannelStartTime(),  GetChannelStartTime() + GetChannelTime(), 0.0f, 1.0f  ));

    VectorNormalize( vDirection );

    sLinearProjectileCreateInfo info;
    info.pszEffectName = "particles/neutral_fx/mini_rosh_fire.vpcf";
    info.bStickyFoWReveal = true;
    info.pAbility = this;
    info.vVelocity = vDirection * speed;
    info.vSpawnOrigin = GetCaster()->GetAbsOrigin();
    info.fDistance = GetCastRange();
    info.fStartRadius = radius;
    info.fEndRadius = radius;
    info.hSource = GetCaster();
    info.iUnitTargetTeam = DOTA_UNIT_TARGET_TEAM_ENEMY;
    info.iUnitTargetType = DOTA_UNIT_TARGET_HERO | DOTA_UNIT_TARGET_BASIC;
    info.iUnitTargetFlags = DOTA_UNIT_TARGET_FLAG_MAGIC_IMMUNE_ENEMIES;
    info.iVisionTeamNumber = GetCaster()->GetTeamNumber();

    g_DOTAProjectileManager.CreateLinearProjectile( info );

}
#endif


//-----------------------------------------------------------------------------

bool CDOTA_Ability_Creature_Fire_Breath::OnProjectileHit( EHANDLE hTarget, const Vector &vLocation )
{
#ifdef SERVER_DLL
    CDOTA_BaseNPC *pTarget = ToDOTABaseNPC( hTarget );
    if ( pTarget && !pTarget->IsInvulnerable() && !pTarget->IsAncient() )
    {
        ApplyDamage( GetCaster(), pTarget, this, damage, DAMAGE_TYPE_MAGICAL );
    }
#endif

    return false;
}