planet/ue_client/Source/PlanetClient/ComputePointActor.h

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "PlanetDataTypes.h"
#include "ComputePointActor.generated.h"

class UStaticMeshComponent;
class UBillboardComponent;

UENUM(BlueprintType)
enum class EPointVisualState : uint8
{
    Normal    UMETA(DisplayName="Normal"),
    Hovered   UMETA(DisplayName="Hovered"),
    Selected  UMETA(DisplayName="Selected"),
};

/**
 * AComputePointActor
 *
 * Represents one supercomputer data point on the Cesium globe.
 *
 * Usage:
 *   1. Create a Blueprint subclass: Content Browser → New Blueprint →
 *      search "AComputePointActor" as parent class → name it BP_ComputePointActor
 *   2. In the Blueprint, assign a sphere mesh to SphereMesh (Engine/BasicShapes/Sphere)
 *   3. Assign a material to NormalMaterial / HoveredMaterial / SelectedMaterial
 *   4. Set this Blueprint class in APlanetDataManager → ComputePointClass
 */
UCLASS(BlueprintType, Blueprintable)
class PLANETCLIENT_API AComputePointActor : public AActor
{
    GENERATED_BODY()

public:
    AComputePointActor();

    // -----------------------------------------------------------------------
    // Components
    // -----------------------------------------------------------------------

    // The visible sphere. Assign a sphere mesh in your Blueprint subclass.
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="Planet|Components")
    UStaticMeshComponent* SphereMesh;

    // -----------------------------------------------------------------------
    // Materials (assign in Blueprint subclass)
    // -----------------------------------------------------------------------
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Planet|Visual")
    UMaterialInterface* NormalMaterial;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Planet|Visual")
    UMaterialInterface* HoveredMaterial;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Planet|Visual")
    UMaterialInterface* SelectedMaterial;

    // -----------------------------------------------------------------------
    // Point scale (world units). Tweak this in the Details Panel.
    // -----------------------------------------------------------------------
    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category="Planet|Visual")
    float PointScale = 80000.f;

    // -----------------------------------------------------------------------
    // Data (set by APlanetDataManager after spawn)
    // -----------------------------------------------------------------------
    UPROPERTY(BlueprintReadOnly, Category="Planet|Data")
    FComputePoint PointData;

    UPROPERTY(BlueprintReadOnly, Category="Planet|Data")
    EPointVisualState VisualState = EPointVisualState::Normal;

    // -----------------------------------------------------------------------
    // Public API
    // -----------------------------------------------------------------------

    // Called by APlanetDataManager immediately after spawning.
    UFUNCTION(BlueprintCallable, Category="Planet")
    void SetPointData(const FComputePoint& Data);

    // Called by PlanetPlayerController on hover/select.
    UFUNCTION(BlueprintCallable, Category="Planet")
    void SetVisualState(EPointVisualState NewState);

    // Convenience: is this point currently selected?
    UFUNCTION(BlueprintPure, Category="Planet")
    bool IsSelected() const { return VisualState == EPointVisualState::Selected; }

protected:
    virtual void BeginPlay() override;

private:
    void ApplyMaterial();
};