TrafficSignBase.h

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// Copyright (c) 2017 Computer Vision Center (CVC) at the Universitat Autonoma
// de Barcelona (UAB).
//
// This work is licensed under the terms of the MIT license.
// For a copy, see <https://opensource.org/licenses/MIT>.
 
#pragma once
 
#include "GameFramework/Actor.h"
 
#include "TrafficSignBase.generated.h"
 
class UBoxComponent;
 
// UENUM 将枚举类型进行标记，方便 虚幻头文件解析工具(UHT, UnrealHeaderTool) 为其生成相应的类型文件，生成反射系统需要的代码。
// BlueprintType说明符令该枚举可以在蓝图中自如使用。
UENUM(BlueprintType)
enum class ETrafficSignState : uint8 {
  Null = 0, // 解决 UE4.24 枚举问题
  UNKNOWN            = 0u   UMETA(DisplayName = "UNKNOWN"),
  TrafficLightRed    = 1u   UMETA(DisplayName = "Traffic Light - Red"),
  TrafficLightYellow = 2u   UMETA(DisplayName = "Traffic Light - Yellow"),
  TrafficLightGreen  = 3u   UMETA(DisplayName = "Traffic Light - Green"),
  SpeedLimit_30             UMETA(DisplayName = "Speed Limit - 30"),
  SpeedLimit_40             UMETA(DisplayName = "Speed Limit - 40"),
  SpeedLimit_50             UMETA(DisplayName = "Speed Limit - 50"),
  SpeedLimit_60             UMETA(DisplayName = "Speed Limit - 60"),
  SpeedLimit_90             UMETA(DisplayName = "Speed Limit - 90"),
  SpeedLimit_100            UMETA(DisplayName = "Speed Limit - 100"),
  SpeedLimit_120            UMETA(DisplayName = "Speed Limit - 120"),
  SpeedLimit_130            UMETA(DisplayName = "Speed Limit - 130"),
  StopSign                  UMETA(DisplayName = "Stop Sign"),
  YieldSign                 UMETA(DisplayName = "Yield Sign")
};
 
UCLASS()
class CARLA_API ATrafficSignBase : public AActor {
 
  GENERATED_BODY()
 
public:
 
  ATrafficSignBase(const FObjectInitializer &ObjectInitializer);
 
  UFUNCTION(BlueprintCallable)
  ETrafficSignState GetTrafficSignState() const
  {
    return TrafficSignState;
  }
 
  UFUNCTION(BlueprintCallable)
  void SetTrafficSignState(ETrafficSignState State)
  {
    TrafficSignState = State;
  }
 
  UFUNCTION(BlueprintImplementableEvent)
  UBoxComponent *GetTriggerVolume() const;
 
  TArray<UBoxComponent*> GetTriggerVolumes() const;
 
private:
 
  UPROPERTY(Category = "Traffic Sign", EditAnywhere)
  ETrafficSignState TrafficSignState = ETrafficSignState::UNKNOWN;
};