U2.ImpactHandler

//=============================================================================
// ImpactHandler.uc
// $Author: Mfox $
// $Date: 1/05/03 8:46p $
// $Revision: 24 $
//=============================================================================

class ImpactHandler extends Object
	abstract
	native;

#exec OBJ LOAD FILE=..\Sounds\U2WeaponsA.uax

// NOTE: U2DamageType.uc handles spewing blood for Pawns and PlayerPawns, so blood effects for TT_Skin should be disabled

struct native TMaterialSounds // list must be terminated with TT_Default definition
{
	var() Material.ETextureType TextureType;
	var() sound ImpactSound;
	var() sound RicochetSound; // optional as long as ImpactSound is specified
	// not implmented: Volume Range
	// not implmented: Pitch Range
	// not implmented: Odds -- of this sound being used (to support multiple sounds for the same type)
};


struct native TMaterialEffects // list must be terminated with TT_Default definition
{
	var() Material.ETextureType TextureType;
	var() Texture DecalTexture;
	var() float DecalScale;
	var() class<Actor> HitEffectClass;
	var() ParticleGenerator ParticleEffect;
	var() float RicochetProbability;
	var() float RicochetIncidenceThreshold;	// surface normal dot projectile direction normal must be less than one minus this value.  (0=any angle bounces, 1=nothing bounces)
	var() int MaxRicochetCount;
	var() float RicochetDamping;
	var() float RicochetSpreadAngle;
	var() float Lifespan;					//optional, used for ParticleEffect and HitEffectClass actors
	// not implmented: Odds -- of this decal/effect being used (to support multiple effects for the same type)
};


var() array<TMaterialSounds> MaterialSounds;
var() array<TMaterialEffects> MaterialEffects;
var() class<U2Projectile> RicochetProjectile;
var() float ReturnDefaultEffectOdds;

static native final function Sound GetImpactSound( Material.ETextureType TextureType, bool bRicochet );
static native final function HandleImpact( Actor Source, vector HitDirection, Material.CheckResult Hit, bool bImpactSound );
static native final function Init( Actor ContextActor );

// optional TextureType passed in on client-side in multiplayer only (optimization to avoid replicating CheckResult)
static function TraceImpact( U2Weapon Source, Material.CheckResult Hit )
{
	// caller is on either the client or the server, no need to implement replication or spawn a new ImpactHandler
	// we pass vect(0,0,0) instead of vector(Pawn(Weapon.Owner).GetViewRotation()) because the viewrotation could differ on the client and the server
	if( (Source.Level.Game.GameFlags & U2GameInfo.GF_NOIMPACTS) == 0 )
		HandleImpact( Source, vect(0,0,0), Hit, true );
}


static function ProjectileImpact( U2Projectile Source, Material.CheckResult Hit, bool bImpactSound )
{
	// caller is on either the client or the server, no need to implement replication or spawn a new ImpactHandler
	if( (Source.Level.Game.GameFlags & U2GameInfo.GF_NOIMPACTS) == 0 )
		HandleImpact( Source, Normal( Source.Velocity ), Hit, bImpactSound );
}


static function ParticleImpact( ParticleGenerator Source, ParticleHandle P, Material.CheckResult Hit )
{
	// caller is on either the client or the server, no need to implement replication or spawn a new ImpactHandler
	if( (Source.Level.Game.GameFlags & U2GameInfo.GF_NOIMPACTS) == 0 )
		HandleImpact( Source, Normal( class'ParticleGenerator'.static.ParticleGetVelocity(P) ), Hit, true );
}


static function Sound DetermineImpactSound( Actor Source, Material.CheckResult Hit, bool bRicochet )
{
	//2002.12.19 (mdf) warning fix
	if( Source != None && (Source.Level.Game.GameFlags & U2GameInfo.GF_NOIMPACTS) == 0 )
		return GetImpactSound( class'Material'.static.GetHitTextureType( Hit ), bRicochet );
		
	return None;
}


function ForceClassToExist()
{
	local Class C;
	C = class'U2Decal';
	C = class'ProjectileSoundProxy';
}

defaultproperties
{
}