一、碰撞预设1、碰撞设置主要4种类型NoCollision(无碰撞)、query、Physics、Probe。语法如图其余类似。ALBox-SetCollisionEnabled(ECollisionEnabled::QueryAndPhysics); ALBox-SetCollisionEnabled(ECollisionEnabled::QueryOnly);2、自身碰撞类型ALBox-SetCollisionObjectType(EEC_WorldStatic);其余还有WorldDynamic、Pawn、PhysicsBody、vehicle、Destructible。(前面都要加EEC)3、碰撞响应ALBox-SetCollisionResponseToChannels(ECR_Block);其余还有Overlap、Ignore。如果像这样设置是设置全部碰撞类型的响应如果想要单独设置单个类型的响应可以ALBox-SetCollisionResponseToChannels(EEC_WorldStatic,ECR_Block);以此类推二、auto补充TMapFString, int32 MyMap; // 旧样式 for (auto It MyMap.CreateIterator(); It; It) { UE_LOG(LogCategory, Log, TEXT(Key: %s, Value: %d), It.Key(), *It.Value()); } // 新样式 for (TPairFString, int32 Kvp : MyMap) { UE_LOG(LogCategory, Log, TEXT(Key: %s, Value: %d), *Kvp.Key, Kvp.Value); }三、单播代理委托1、创建DECLARE_DELEGATE(FALDelegate) DECLARE_DELEGATE_OneParam(FALDelegateOne, int32) DECLARE_DELEGATE_TwoParams(FALDelegateTwo, int32, float) DECLARE_DELEGATE_ThreeParams(FALDelegateThree,int32,float,FString) DECLARE_DELEGATE_RetVal(int32, FALDelegateRetVal)//声明 void NoParamFunc(); void OneParamFunc(int32 InInt); void TwoParamFunc(int32 InInt, float InFloat); void ThreeParamFunc(int32 InInt, float InFloat, FString InString); int32 RetValFunc();//方法2、代理绑定事件NoParamDelegate.BindUObject(this, AALActor::NoParamFunc); OneParamDelegate.BindUObject(this, AALActor::OneParamFunc); TwoParamDelegate.BindUObject(this, AALActor::TwoParamFunc); ThreeParamDelegate.BindUObject(this, AALActor::ThreeParamFunc); RetValDelegate.BindUObject(this, AALActor::RetValFunc);//写在构造函数内3、执行NoParamDelegate.ExecuteIfBound(); OneParamDelegate.ExecuteIfBound(42); TwoParamDelegate.ExecuteIfBound(42, 3.14f); ThreeParamDelegate.ExecuteIfBound(42, 3.14f, TEXT(Ciallo)); int32 RetVal RetValDelegate.Execute();四、多播代理1、创建DECLARE_MULTICAST_DELEGATE(FALMulticastDelegate)2、绑定MulticastDelegate.AddUObject(this, AALActor::NoParamFunc); MulticastDelegate.AddUObject(this, AALActor::NoParamFunc2); MulticastDelegate.AddUObject(this, AALActor::NoParamFunc3);//多播代理可以绑定多个函数3、执行MulticastDelegate.Broadcast();