214 lines
10 KiB
Ucode
214 lines
10 KiB
Ucode
|
/**
|
||
|
|
* this class manages a pool of ParticleSystemComponents
|
||
|
|
* it is meant to be used for single shot effects spawned during gameplay
|
||
|
|
* to reduce object overhead that would otherwise be caused by spawning dozens of Emitters
|
||
|
|
*
|
||
|
|
* Copyright 1998-2013 Epic Games, Inc. All Rights Reserved.
|
||
|
|
*/
|
||
|
|
class EmitterPool extends Actor
|
||
|
|
native
|
||
|
|
transient
|
||
|
|
config(Game);
|
||
|
|
|
||
|
|
/** template to base pool components off of - should not be used for effects or attached to anything */
|
||
|
|
var protected ParticleSystemComponent PSCTemplate;
|
||
|
|
|
||
|
|
/** components currently in the pool */
|
||
|
|
var transient const array<ParticleSystemComponent> PoolComponents;
|
||
|
|
/** components currently active */
|
||
|
|
var transient array<ParticleSystemComponent> ActiveComponents;
|
||
|
|
// NVCHANGE_BEGIN: JCAO - Add surrogate emitter for flex
|
||
|
|
/** surrogate flex emitters */
|
||
|
|
var transient ParticleSystemComponent FlexSurrogateComponent;
|
||
|
|
// NVCHANGE_END: JCAO - Add surrogate emitter for flex
|
||
|
|
/** maximum allowed active components - if this is greater than 0 and is exceeded, the oldest active effect is taken */
|
||
|
|
var int MaxActiveEffects;
|
||
|
|
|
||
|
|
/** option to log out the names of all active effects when the pool overflows */
|
||
|
|
var globalconfig bool bLogPoolOverflow;
|
||
|
|
var globalconfig bool bLogPoolOverflowList;
|
||
|
|
|
||
|
|
/** list of components that should be relative to an Actor */
|
||
|
|
struct native EmitterBaseInfo
|
||
|
|
{
|
||
|
|
var ParticleSystemComponent PSC;
|
||
|
|
var Actor Base;
|
||
|
|
var vector RelativeLocation;
|
||
|
|
var rotator RelativeRotation;
|
||
|
|
var bool bInheritBaseScale;
|
||
|
|
};
|
||
|
|
var transient array<EmitterBaseInfo> RelativePSCs;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The amount of time to allow the SMC and MIC arrays to be beyond their ideals.
|
||
|
|
*/
|
||
|
|
var float SMC_MIC_ReductionTime;
|
||
|
|
var transient float SMC_MIC_CurrentReductionTime;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The ideal number of StaticMeshComponents and MaterialInstanceConstants.
|
||
|
|
* If their counts are greater than this for more than ReductionTime, then
|
||
|
|
* they will be chopped down to their respective settings.
|
||
|
|
*/
|
||
|
|
var int IdealStaticMeshComponents;
|
||
|
|
var int IdealMaterialInstanceConstants;
|
||
|
|
|
||
|
|
/** The free StaticMeshComponents used by emitters in this pool */
|
||
|
|
var private transient const array<StaticMeshComponent> FreeSMComponents;
|
||
|
|
|
||
|
|
/** The free MaterialInstanceConstants used by emitters in this pool */
|
||
|
|
var private transient const array<MaterialInstanceConstant> FreeMatInstConsts;
|
||
|
|
|
||
|
|
cpptext
|
||
|
|
{
|
||
|
|
virtual void TickSpecial(FLOAT DeltaTime);
|
||
|
|
}
|
||
|
|
|
||
|
|
/** set to each pool component's finished delegate to return it to the pool
|
||
|
|
* for custom lifetime PSCs, must be called manually when done with the component
|
||
|
|
*/
|
||
|
|
native function OnParticleSystemFinished(ParticleSystemComponent PSC);
|
||
|
|
|
||
|
|
/** Cleans up the pool components, removing any unused
|
||
|
|
*
|
||
|
|
* @param bClearActive If TRUE, clear active as well as inactive pool components
|
||
|
|
*/
|
||
|
|
native final function ClearPoolComponents(bool bClearActive = false);
|
||
|
|
|
||
|
|
/** internal - detaches the given PSC and returns it to the pool */
|
||
|
|
protected native final function ReturnToPool(ParticleSystemComponent PSC);
|
||
|
|
|
||
|
|
/** internal - moves the SMComponents from given PSC to the pool free list */
|
||
|
|
protected native final function FreeStaticMeshComponents(ParticleSystemComponent PSC);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* internal - retrieves a SMComponent from the pool free list
|
||
|
|
*
|
||
|
|
* @param bCreateNewObject If TRUE, create an SMC w/ the pool as its outer
|
||
|
|
*
|
||
|
|
* @return StaticMeshComponent The SMC, NULL if none was available/created
|
||
|
|
*/
|
||
|
|
protected native final function StaticMeshComponent GetFreeStaticMeshComponent(bool bCreateNewObject = true);
|
||
|
|
|
||
|
|
/** internal - moves the MIConstants from given SMComponent to the pool free list */
|
||
|
|
protected native final function FreeMaterialInstanceConstants(StaticMeshComponent SMC);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* internal - retrieves a MaterialInstanceConstant from the pool free list
|
||
|
|
*
|
||
|
|
* @param bCreateNewObject If TRUE, create an MIC w/ the pool as its outer
|
||
|
|
*
|
||
|
|
* @return MaterialInstanceConstant The MIC, NULL if none was available/created
|
||
|
|
*/
|
||
|
|
protected native final function MaterialInstanceConstant GetFreeMatInstConsts(bool bCreateNewObject = true);
|
||
|
|
|
||
|
|
/** internal - helper for spawning functions
|
||
|
|
* gets a component from the appropriate pool array (checks PerEmitterPools)
|
||
|
|
* includes creating a new one if necessary as well as taking one from the active list if the max number active has been exceeded
|
||
|
|
* @return the ParticleSystemComponent to use
|
||
|
|
*/
|
||
|
|
protected native final function ParticleSystemComponent GetPooledComponent(ParticleSystem EmitterTemplate, bool bAutoActivate);
|
||
|
|
|
||
|
|
/** plays the specified effect at the given location and rotation, taking a component from the pool or creating as necessary
|
||
|
|
* @note: the component is returned so the caller can perform any additional modifications (parameters, etc),
|
||
|
|
* but it shouldn't keep the reference around as the component will be returned to the pool as soon as the effect is complete
|
||
|
|
* @param EmitterTemplate - particle system to create
|
||
|
|
* @param SpawnLocation - location to place the effect in world space
|
||
|
|
* @param SpawnRotation (opt) - rotation to place the effect in world space
|
||
|
|
* @param AttachToActor (opt) - if specified, component will move along with this Actor
|
||
|
|
* @param InInstigator (opt) - if specified and the particle system is lit, the new component will only share particle light environments with other components with matching instigators
|
||
|
|
* @param MaxDLEPooledReuses (opt) - if specified, limits how many components can use the same particle light environment. This is effectively a tradeoff between performance and particle lighting update rate.
|
||
|
|
* @param bInheritScaleFromBase (opt) - if TRUE scale from the base actor will be applied
|
||
|
|
* @return the ParticleSystemComponent the effect will use
|
||
|
|
*/
|
||
|
|
native function ParticleSystemComponent SpawnEmitter(ParticleSystem EmitterTemplate, vector SpawnLocation, optional rotator SpawnRotation, optional Actor AttachToActor, optional Actor InInstigator, optional int MaxDLEPooledReuses, optional bool bInheritScaleFromBase);
|
||
|
|
|
||
|
|
/** spawns a particle system attached to a SkeletalMeshComponent instead of to another Actor or to nothing
|
||
|
|
* as with SpawnEmitter(), the caller should avoid persistent references to the returned component as it will
|
||
|
|
* get automatically reclaimed when the effect is complete
|
||
|
|
* @note: if the owning Actor is destroyed before the effect completes, the ParticleSystemComponent will end up
|
||
|
|
* being marked pending kill and therefore eventually destroyed as well. The pool handles this gracefully,
|
||
|
|
* although it's obviously suboptimal.
|
||
|
|
* @param EmitterTemplate - particle system to create
|
||
|
|
* @param Mesh - mesh component to attach to
|
||
|
|
* @param AttachPointName - bone or socket to attach to
|
||
|
|
* @param bAttachToSocket (opt) - whether AttachPointName is a socket or bone name
|
||
|
|
* @param RelativeLoc (opt) - offset from bone location to place the effect (not used when attaching to socket)
|
||
|
|
* @param RelativeRot (opt) - offset from bone rotation to place the effect (not used when attaching to socket)
|
||
|
|
* @return the ParticleSystemComponent the effect will use
|
||
|
|
*/
|
||
|
|
native function ParticleSystemComponent SpawnEmitterMeshAttachment( ParticleSystem EmitterTemplate,
|
||
|
|
SkeletalMeshComponent Mesh, name AttachPointName, optional bool bAttachToSocket,
|
||
|
|
optional vector RelativeLoc, optional rotator RelativeRot );
|
||
|
|
|
||
|
|
/** spawns a pooled component that has a custom lifetime (controlled by the caller)
|
||
|
|
* the caller is responsible for attaching/detaching the component
|
||
|
|
* as well as calling our OnParticleSystemFinished() function when it is done with the component
|
||
|
|
* the pool may take the component back early - if it does, it will trigger the component's OnSystemFinished delegate
|
||
|
|
* so the caller can guarantee that it will be triggered
|
||
|
|
* @param EmitterTemplate - particle system to create
|
||
|
|
* @param bSkipAutoActivate - if TRUE, do not autoactivate the component when retrieving it from the pool
|
||
|
|
* @return the ParticleSystemComponent to use
|
||
|
|
*/
|
||
|
|
native function ParticleSystemComponent SpawnEmitterCustomLifetime(ParticleSystem EmitterTemplate, optional bool bSkipAutoActivate);
|
||
|
|
|
||
|
|
// NVCHANGE_BEGIN: JCAO - Add surrogate emitter for flex
|
||
|
|
simulated function PostBeginPlay()
|
||
|
|
{
|
||
|
|
// not using defaultproperties solves two problems: Template having stale data in it from the last level/PIE session,
|
||
|
|
// and LODSettings array being cleared in PostLoad when running the editor.
|
||
|
|
local ParticleSystem FlexParticleTemplate;
|
||
|
|
local DynamicLightEnvironmentComponent FlexLightEnvironment;
|
||
|
|
local ParticleSystemComponent SurrogateComponentTemplate;
|
||
|
|
local LightingChannelContainer LightingChannels;
|
||
|
|
|
||
|
|
SurrogateComponentTemplate = new() class'ParticleSystemComponent';
|
||
|
|
SurrogateComponentTemplate.SecondsBeforeInactive=9999999999999;
|
||
|
|
SurrogateComponentTemplate.CastShadow=false;
|
||
|
|
SurrogateComponentTemplate.bUseAsOccluder=true;
|
||
|
|
// SPH fluid was rendered at first
|
||
|
|
SurrogateComponentTemplate.TranslucencySortPriority=0;
|
||
|
|
|
||
|
|
FlexParticleTemplate = new(SurrogateComponentTemplate) class'ParticleSystem';
|
||
|
|
FlexParticleTemplate.LODSettings.Add(1);
|
||
|
|
FlexParticleTemplate.LODSettings[0].bLit=true;
|
||
|
|
FlexParticleTemplate.LODDistances.Add(1);
|
||
|
|
FlexParticleTemplate.LODDistances[0] = 0;
|
||
|
|
|
||
|
|
FlexLightEnvironment = new(SurrogateComponentTemplate) SurrogateComponentTemplate.LightEnvironmentClass;
|
||
|
|
FlexLightEnvironment.SetEnabled(false);
|
||
|
|
SurrogateComponentTemplate.SetLightEnvironment(FlexLightEnvironment);
|
||
|
|
|
||
|
|
LightingChannels.Indoor = true;
|
||
|
|
LightingChannels.Outdoor = true;
|
||
|
|
LightingChannels.bInitialized = true;
|
||
|
|
SurrogateComponentTemplate.SetLightingChannels(LightingChannels);
|
||
|
|
|
||
|
|
FlexSurrogateComponent = new(self) class'ParticleSystemComponent'(SurrogateComponentTemplate);
|
||
|
|
FlexSurrogateComponent.SetTemplate(new(FlexSurrogateComponent) class'ParticleSystem'(FlexParticleTemplate));
|
||
|
|
AttachComponent(FlexSurrogateComponent);
|
||
|
|
|
||
|
|
Super.PostBeginPlay();
|
||
|
|
}
|
||
|
|
// NVCHANGE_END: JCAO - Add surrogate emitter for flex
|
||
|
|
|
||
|
|
defaultproperties
|
||
|
|
{
|
||
|
|
Begin Object Class=ParticleSystemComponent Name=ParticleSystemComponent0
|
||
|
|
AbsoluteTranslation=true
|
||
|
|
AbsoluteRotation=true
|
||
|
|
SecondsBeforeInactive=0.0
|
||
|
|
End Object
|
||
|
|
PSCTemplate=ParticleSystemComponent0
|
||
|
|
|
||
|
|
TickGroup=TG_DuringAsyncWork
|
||
|
|
|
||
|
|
SMC_MIC_ReductionTime=2.5
|
||
|
|
IdealStaticMeshComponents=250
|
||
|
|
IdealMaterialInstanceConstants=250
|
||
|
|
|
||
|
|
`if(`__TW_)
|
||
|
|
//MaxActiveEffects=200
|
||
|
|
`endif
|
||
|
|
}
|