UE4 范围伤害RadiusDamage及碰撞检测通道ECollisionChanel

最新推荐文章于 2025-06-17 15:59:56 发布

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最新推荐文章于 2025-06-17 15:59:56 发布 · 5.9k 阅读

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#UE4 #Collision #RadiusDamage

UE4的RadiusDamage函数在进行范围伤害计算时，首先通过物理检测获取所有非WorldStatic的Component，然后在特定的碰撞通道上进行射线检测。若某个Component的碰撞类型匹配特定过滤条件，例如ECC_GameTraceChannel3，则该Component不会受到伤害。这种方法可以避免特定Component接收伤害，而其他Component不受范围内物体阻挡的影响。注意ECC_EngineTraceChannel1与ECC_GameTraceChannel1的区别。

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UE4的范围伤害函数为

/** Hurt locally authoritative actors within the radius. Will only hit components that block the Visibility channel.
...
 * @param DamagePreventionChannel - Damage will not be applied to victim if there is something between the origin and the victim which blocks traces on this channel
 ...
 */
UFUNCTION(BlueprintCallable, BlueprintAuthorityOnly, Category="Game|Damage", meta=(WorldContext="WorldContextObject", AutoCreateRefTerm="IgnoreActors"))
static bool ApplyRadialDamageWithFalloff(const UObject* WorldContextObject, float BaseDamage, float MinimumDamage, const FVector& Origin, float DamageInnerRadius, float DamageOuterRadius, float DamageFalloff, TSubclassOf<class UDamageType> DamageTypeClass, const TArray<AActor*>& IgnoreActors, AActor* DamageCauser = NULL, AController* InstigatedByController = NULL, ECollisionChannel DamagePreventionChannel = ECC_Visibility);

函数参数除伤害值和伤害范围外还有一个