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// Copyright 2025 https://yuewu.dev/en All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Components/ActorComponent.h"
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#include "GameplayTagContainer.h"
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#include "GCS_TraceDelegates.h"
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#include "GCS_TraceStructLibrary.h"
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#include "GCS_TraceSystemComponent.generated.h"
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class UGCS_TraceSubsystem;
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class UPrimitiveComponent;
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DECLARE_DYNAMIC_MULTICAST_DELEGATE(FGCS_OnTraceSystemDestroyedSignature);
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/**
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* Component for managing collision trace instances.
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* 管理碰撞检测实例的组件。
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*/
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UCLASS(ClassGroup=(GCS), meta=(BlueprintSpawnableComponent, PrioritizeCategories="GCS"), Blueprintable, HideCategories=(Sockets, Navigation, Tags, ComponentTick, ComponentReplication,
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Cooking, AssetUserData, Replication))
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class GENERICCOMBATSYSTEM_API UGCS_TraceSystemComponent : public UActorComponent
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{
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GENERATED_BODY()
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friend UGCS_TraceSubsystem;
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public:
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/**
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* Default constructor.
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* 默认构造函数。
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*/
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UGCS_TraceSystemComponent(const FObjectInitializer& ObjectInitializer);
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/**
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* Gets the collision trace system component from an actor.
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* 从Actor获取碰撞检测系统组件。
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* @param Actor The actor to query. 要查询的Actor。
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* @return The collision trace system component. 碰撞检测系统组件。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem", Meta = (DefaultToSelf="Actor"))
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static UGCS_TraceSystemComponent* GetTraceSystemComponent(const AActor* Actor);
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/**
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* Finds the collision trace system component on an actor.
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* 在Actor上查找碰撞检测系统组件。
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* @param Actor The actor to query. 要查询的Actor。
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* @param Component The found component (output). 找到的组件（输出）。
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* @return True if found. 如果找到返回true。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem", Meta = (DefaultToSelf="Actor", ExpandBoolAsExecs="ReturnValue"))
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static bool FindTraceSystemComponent(const AActor* Actor, UGCS_TraceSystemComponent*& Component);
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/**
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* Initializes the collision trace system.
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* 初始化碰撞检测系统。
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*/
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UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "GCS|TraceSystem", meta=(DisplayName="Initialize Trace System"))
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void OnInitialize();
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virtual void OnInitialize_Implementation();
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/**
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* Deinitializes the collision trace system.
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* 取消初始化碰撞检测系统。
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*/
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UFUNCTION(BlueprintCallable, BlueprintNativeEvent, Category = "GCS|TraceSystem", meta=(DisplayName="Deinitialize Trace System"))
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void OnDeinitialize();
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virtual void OnDeinitialize_Implementation();
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/**
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* Creates trace instances from definitions.
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* 从定义创建碰撞检测实例。
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* @param Definitions The trace definitions. 碰撞检测定义。
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* @param SourceComponent The primitive component for tracing. 用于追踪的原始组件。
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* @param SourceObject The source object. 源对象。
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* @return The created trace instances. 创建的碰撞检测实例。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> AddTracesByDefinitions(const TArray<FGCS_TraceDefinition>& Definitions, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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/**
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* Creates trace instances from data table row handles.
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* 从数据表行句柄创建碰撞检测实例。
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* @param DefinitionHandles The data table row handles for trace definitions. 碰撞检测定义的数据表行句柄。
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* @param SourceComponent The primitive component for tracing. 用于追踪的原始组件。
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* @param SourceObject The source object. 源对象。
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* @return The created trace instances. 创建的碰撞检测实例。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> AddTracesByDefinitionHandles(UPARAM(meta=(RowType="/Script/GenericCombatSystem.GCS_CollisionTraceDefinition"))
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const TArray<FDataTableRowHandle>& DefinitionHandles, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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/**
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* Creates a single trace instance from a definition.
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* 从定义创建单个碰撞检测实例。
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* @param Definition The trace definition. 碰撞检测定义。
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* @param SourceComponent The primitive component for tracing. 用于追踪的原始组件。
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* @param SourceObject The source object. 源对象。
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* @return The created trace instance. 创建的碰撞检测实例。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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FGCS_TraceHandle AddTraceByDefinition(const FGCS_TraceDefinition& Definition, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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/**
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* Starts traces by tags and source object.
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* 通过标签和源对象启动碰撞检测。
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* @param TraceTags The gameplay tags to match. 要匹配的游戏标签。
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* @param SourceObject The source object. 源对象。
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* @return The started trace instances. 启动的碰撞检测实例。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> StartTracesByTagsAndSource(const FGameplayTagContainer& TraceTags, const UObject* SourceObject);
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/**
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* Starts multiple traces by their handles.
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* 通过句柄启动多个碰撞检测。
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* @param TraceHandles The trace handles to start. 要启动的碰撞检测句柄。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void StartTracesByHandles(const TArray<FGCS_TraceHandle>& TraceHandles);
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/**
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* Starts a single trace by its handle.
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* 通过句柄启动单个碰撞检测。
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* @param TraceHandle The trace handle to start. 要启动的碰撞检测句柄。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void StartTraceByHandle(const FGCS_TraceHandle& TraceHandle);
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/**
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* Stops multiple traces by their handles.
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* 通过句柄停止多个碰撞检测。
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* @param TraceHandles The trace handles to stop. 要停止的碰撞检测句柄。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void StopTracesByHandles(const TArray<FGCS_TraceHandle>& TraceHandles);
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/**
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* Stops a single trace by its handle.
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* 通过句柄停止单个碰撞检测。
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* @param TraceHandle The trace handle to stop. 要停止的碰撞检测句柄。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void StopTraceByHandle(const FGCS_TraceHandle& TraceHandle);
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/**
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* Removes a trace by its handle.
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* 通过句柄移除碰撞检测。
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* @param TraceHandle The trace handle to remove. 要移除的碰撞检测句柄。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void RemoveTraceByHandle(const FGCS_TraceHandle& TraceHandle);
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/**
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* Clears all active and cached trace instances.
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* 清除所有激活和缓存的碰撞检测实例。
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* @note OnTraceEndPlay event is not fired. OnTraceEndPlay事件不会触发。
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*/
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UFUNCTION(BlueprintCallable, Category = "GCS|TraceSystem")
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void RemoveAllTraces();
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/**
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* Gets all trace handles with the specified tag.
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* 获取具有指定标签的所有碰撞检测句柄。
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* @param TraceToFind The gameplay tag to search for. 要搜索的游戏标签。
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* @return Array of trace handles with the specified tag. 具有指定标签的碰撞检测句柄数组。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> GetTraceHandlesByTag(FGameplayTag TraceToFind) const;
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/**
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* Gets all trace handles created by the specified source object.
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* 获取由指定源对象创建的所有碰撞检测句柄。
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* @param SourceObject The source object to search for. 要搜索的源对象。
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* @return Array of trace handles from the specified source. 来自指定源的碰撞检测句柄数组。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> GetTraceHandlesBySource(const UObject* SourceObject) const;
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/**
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* Gets all trace handles with the specified tags and source object.
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* 获取具有指定标签和源对象的所有碰撞检测句柄。
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* @param TraceTags The gameplay tags to match. 要匹配的游戏标签。
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* @param SourceObject The source object to match. 要匹配的源对象。
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* @return Array of trace handles matching the criteria. 匹配条件的碰撞检测句柄数组。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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TArray<FGCS_TraceHandle> GetTraceHandlesByTagsAndSource(const FGameplayTagContainer& TraceTags, const UObject* SourceObject) const;
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/**
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* Gets the source actor for the specified trace handle.
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* 获取指定碰撞检测句柄的源Actor。
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* @param TraceHandle The trace handle to query. 要查询的碰撞检测句柄。
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* @return The source actor, or nullptr if not found. 源Actor，如果未找到则返回nullptr。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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AActor* GetTraceSourceActor(const FGCS_TraceHandle& TraceHandle) const;
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/**
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* Gets the source component for the specified trace handle.
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* 获取指定碰撞检测句柄的源组件。
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* @param TraceHandle The trace handle to query. 要查询的碰撞检测句柄。
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* @return The source component, or nullptr if not found. 源组件，如果未找到则返回nullptr。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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UPrimitiveComponent* GetTraceSourceComponent(const FGCS_TraceHandle& TraceHandle) const;
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/**
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* Checks if the specified trace is currently active.
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* 检查指定的碰撞检测当前是否激活。
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* @param TraceHandle The trace handle to check. 要检查的碰撞检测句柄。
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* @return True if the trace is active. 如果碰撞检测激活则返回true。
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*/
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UFUNCTION(BlueprintCallable, BlueprintPure, Category = "GCS|TraceSystem")
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bool IsTraceActive(const FGCS_TraceHandle& TraceHandle) const;
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virtual TArray<FGCS_TraceHandle> StartTraces(const FGameplayTagContainer& TraceTags, const UObject* SourceObject);
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virtual TArray<FGCS_TraceHandle> AddTraces(const TArray<FGCS_TraceDefinition>& Definitions, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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virtual TArray<FGCS_TraceHandle> AddTraces(const TArray<FDataTableRowHandle>& DefinitionHandles, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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virtual FGCS_TraceHandle AddTrace(const FGCS_TraceDefinition& TraceDefinition, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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virtual FGCS_TraceHandle AddTrace(const FDataTableRowHandle& TraceDefinitionHandle, UPrimitiveComponent* SourceComponent, UObject* SourceObject);
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virtual void StartTraces(const TArray<FGCS_TraceHandle>& TraceHandles);
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virtual void StartTrace(const FGCS_TraceHandle& TraceHandle);
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virtual void StopTraces(const TArray<FGCS_TraceHandle>& TraceHandles);
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virtual void StopTrace(const FGCS_TraceHandle& TraceHandle);
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virtual void RemoveTraces(const TArray<FGCS_TraceHandle>& TraceHandles);
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virtual void RemoveTrace(const FGCS_TraceHandle& TraceHandle);
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/**
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* Event fired when a trace hits something.
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* 当碰撞检测命中某物时触发的事件。
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*/
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UPROPERTY(BlueprintAssignable, Category = "GCS|TraceSystem")
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FGCS_OnTraceHitSignature OnTraceHitEvent;
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/**
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* Event fired when a trace state changes.
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* 当碰撞检测状态改变时触发的事件。
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*/
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UPROPERTY(BlueprintAssignable, Category = "GCS|TraceSystem")
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FGCS_OnTraceStateChangedSignature OnTraceStateChangedEvent;
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/**
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* Event fired when a trace starts.
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* 当碰撞检测开始时触发的事件。
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*/
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UPROPERTY(BlueprintAssignable, Category = "GCS|TraceSystem")
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FGCS_OnTraceStartedSignature OnTraceStartedEvent;
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/**
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* Event fired when a trace stops.
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* 当碰撞检测停止时触发的事件。
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*/
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UPROPERTY(BlueprintAssignable, Category = "GCS|TraceSystem")
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FGCS_OnTraceStoppedSignature OnTraceStoppedEvent;
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/**
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* Event fired when the trace system is destroyed.
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* 当碰撞检测系统被销毁时触发的事件。
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*/
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FGCS_OnTraceSystemDestroyedSignature OnDestroyedEvent;
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protected:
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virtual void OnTraceHitDetected(const FGCS_TraceHandle& TraceHandle, const TArray<FHitResult>& HitResults, const float DeltaTime, const uint32 TickIdx);
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virtual void OnTraceStateChanged(const FGCS_TraceHandle& TraceHandle, bool bNewState);
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/**
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* Called when the game starts.
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* 游戏开始时调用。
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*/
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virtual void BeginPlay() override;
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/**
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* Called when the game ends.
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* 游戏结束时调用。
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* @param EndPlayReason The reason for ending. 结束原因。
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*/
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virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
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virtual void OnComponentDestroyed(bool bDestroyingHierarchy) override;
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/**
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* Whether to auto-initialize on BeginPlay and deinitialize on EndPlay.
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* 是否在BeginPlay时自动初始化，在EndPlay时自动取消初始化。
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*/
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UPROPERTY(EditAnywhere, Category = "GCS|TraceSystem")
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bool bAutoInitialize{true};
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/**
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* Default trace definitions created on BeginPlay.
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* 在BeginPlay时创建的默认碰撞检测定义。
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* @note SourceComponent will be the actor's main mesh. 源组件会是Actor的主要mesh。
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*/
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UPROPERTY(EditDefaultsOnly, BlueprintReadOnly, Category = "GCS|TraceSystem", meta=(TitleProperty="TraceTag"))
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TArray<FGCS_TraceDefinition> TraceDefinitions;
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FCriticalSection TraceDoneScopeLock;
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TMap<FGCS_TraceHandle, int32> HandleToStateIdx;
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TMultiMap<FGameplayTag, FGCS_TraceHandle> TagToHandles;
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bool bInitialized = false;
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};
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