214 lines
8.7 KiB
C
214 lines
8.7 KiB
C
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// Copyright 2020 Phyronnaz
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#pragma once
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#include "CoreMinimal.h"
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#include "VoxelValue.h"
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#include "VoxelMaterial.h"
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#include "VoxelIntBox.h"
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#include "Templates/SubclassOf.h"
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#include "VoxelGenerators/VoxelGenerator.h"
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struct FVoxelItemStack;
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struct FVoxelGeneratorInit;
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class UMaterialInstanceDynamic;
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template<typename T>
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struct TVoxelRange;
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template<typename T>
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class TVoxelQueryZone;
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/**
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* A FVoxelGeneratorInstance is a constant object created by a UVoxelGenerator
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*/
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class VOXEL_API FVoxelGeneratorInstance : public TVoxelSharedFromThis<FVoxelGeneratorInstance>
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{
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public:
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template<typename T>
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using TOutputFunctionPtr = T(FVoxelGeneratorInstance::*)(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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using TRangeOutputFunctionPtr = TVoxelRange<T>(FVoxelGeneratorInstance::*)(const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const;
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struct FBaseFunctionPtrs
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{
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TOutputFunctionPtr<v_flt> Value;
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TOutputFunctionPtr<FVoxelMaterial> Material;
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TRangeOutputFunctionPtr<v_flt> ValueRange;
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};
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struct FCustomFunctionPtrs
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{
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TMap<FName, TOutputFunctionPtr<v_flt>> Float;
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TMap<FName, TOutputFunctionPtr<int32>> Int;
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TMap<FName, TOutputFunctionPtr<FColor>> Color;
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TMap<FName, TRangeOutputFunctionPtr<v_flt>> FloatRange;
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};
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public:
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FVoxelGeneratorInstance(
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TSubclassOf<UVoxelGenerator> Class,
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const UVoxelGenerator* Object,
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const FBaseFunctionPtrs& BasePtrs,
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const FCustomFunctionPtrs& CustomPtrs)
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: Class(Class)
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, Object(Object)
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, BasePtrs(BasePtrs)
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, CustomPtrs(CustomPtrs)
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{
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check(Class);
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check(BasePtrs.Value);
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check(BasePtrs.Material);
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check(BasePtrs.ValueRange);
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}
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virtual ~FVoxelGeneratorInstance() = default;
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public:
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// Used for serialization
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const TSubclassOf<UVoxelGenerator> Class;
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const TSoftObjectPtr<UVoxelGenerator> Object;
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const FBaseFunctionPtrs BasePtrs;
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const FCustomFunctionPtrs CustomPtrs;
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template<typename T>
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const TMap<FName, TOutputFunctionPtr<T>>& GetOutputsPtrMap() const;
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template<typename T>
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const TMap<FName, TRangeOutputFunctionPtr<T>>& GetOutputsRangesPtrMap() const;
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public:
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//~ Begin FVoxelGeneratorInstance Interface
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// Initialization
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virtual void Init(const FVoxelGeneratorInit& InitStruct) {}
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// Called before a chunk is computed
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// Needs to be thread safe!
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// EXPERIMENTAL
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virtual void InitArea(const FVoxelIntBox& Bounds, int32 LOD) {}
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// Will be called on every chunk material instance
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// Can be used eg to pass a texture per chunk
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// EXPERIMENTAL
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virtual void SetupMaterialInstance(int32 ChunkLOD, const FVoxelIntBox& ChunkBounds, UMaterialInstanceDynamic* Instance) {}
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// You should implement a fast version of that function, called every time a chunk is updated
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virtual void GetValues (TVoxelQueryZone<FVoxelValue >& QueryZone, int32 LOD, const FVoxelItemStack& Items) const = 0;
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// This function is only called when a chunk material is edited for the first time. Fine to leave as default
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virtual void GetMaterials(TVoxelQueryZone<FVoxelMaterial>& QueryZone, int32 LOD, const FVoxelItemStack& Items) const = 0;
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// World up vector at position (must be normalized). Used for spawners
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virtual FVector GetUpVector(v_flt X, v_flt Y, v_flt Z) const = 0;
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//~ End FVoxelGeneratorInstance Interface
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public:
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v_flt GetValue(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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FVoxelMaterial GetMaterial(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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TVoxelRange<v_flt> GetValueRange(const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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T Get(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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void Get(TVoxelQueryZone<T>& QueryZone, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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T Get(const FIntVector& P, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename TVector>
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FVector GetUpVector(const TVector& P) const;
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template<typename T>
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T GetCustomOutput(T DefaultValue, FName Name, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T, typename U>
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T GetCustomOutput(T DefaultValue, FName Name, const U& P, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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TVoxelRange<T> GetCustomOutputRange(TVoxelRange<T> DefaultValue, FName Name, const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const;
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};
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class VOXEL_API FVoxelTransformableGeneratorInstance : public FVoxelGeneratorInstance
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{
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public:
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template<typename T>
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using TOutputFunctionPtr_Transform = T(FVoxelTransformableGeneratorInstance::*)(const FTransform& LocalToWorld, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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using TRangeOutputFunctionPtr_Transform = TVoxelRange<T>(FVoxelTransformableGeneratorInstance::*)(const FTransform& LocalToWorld, const FVoxelIntBox& WorldBounds, int32 LOD, const FVoxelItemStack& Items) const;
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struct FBaseFunctionPtrs_Transform
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{
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TOutputFunctionPtr_Transform<v_flt> Value;
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TOutputFunctionPtr_Transform<FVoxelMaterial> Material;
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TRangeOutputFunctionPtr_Transform<v_flt> ValueRange;
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};
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struct FCustomFunctionPtrs_Transform
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{
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TMap<FName, TOutputFunctionPtr_Transform<v_flt>> Float;
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TMap<FName, TOutputFunctionPtr_Transform<int32>> Int;
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TMap<FName, TOutputFunctionPtr_Transform<FColor>> Color;
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TMap<FName, TRangeOutputFunctionPtr_Transform<v_flt>> FloatRange;
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};
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public:
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FVoxelTransformableGeneratorInstance(
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TSubclassOf<UVoxelTransformableGenerator> Class,
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const UVoxelTransformableGenerator* Object,
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const FBaseFunctionPtrs& BasePtrs,
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const FCustomFunctionPtrs& CustomPtrs,
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const FBaseFunctionPtrs_Transform& BasePtrs_Transform,
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const FCustomFunctionPtrs_Transform& CustomPtrs_Transform)
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: FVoxelGeneratorInstance(Class, Object, BasePtrs, CustomPtrs)
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, BasePtrs_Transform(BasePtrs_Transform)
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, CustomPtrs_Transform(CustomPtrs_Transform)
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{
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check(BasePtrs_Transform.Value);
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check(BasePtrs_Transform.Material);
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check(BasePtrs_Transform.ValueRange);
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if (auto* GeneratorWithBounds = Cast<UVoxelTransformableGeneratorWithBounds>(Object))
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{
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GeneratorBounds = GeneratorWithBounds->GetBounds();
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}
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}
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bool HasBounds() const { return GeneratorBounds.IsSet(); }
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FVoxelIntBox GetBounds() const { return GeneratorBounds.GetValue(); }
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private:
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TOptional<FVoxelIntBox> GeneratorBounds;
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public:
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const FBaseFunctionPtrs_Transform BasePtrs_Transform;
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const FCustomFunctionPtrs_Transform CustomPtrs_Transform;
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template<typename T>
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const TMap<FName, TOutputFunctionPtr_Transform<T>>& GetOutputsPtrMap_Transform() const;
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template<typename T>
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const TMap<FName, TRangeOutputFunctionPtr_Transform<T>>& GetOutputsRangesPtrMap_Transform() const;
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//~ Begin FVoxelTransformableGeneratorInstance Interface
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virtual void GetValues_Transform (const FTransform& LocalToWorld, TVoxelQueryZone<FVoxelValue >& QueryZone, int32 LOD, const FVoxelItemStack& Items) const = 0;
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virtual void GetMaterials_Transform(const FTransform& LocalToWorld, TVoxelQueryZone<FVoxelMaterial>& QueryZone, int32 LOD, const FVoxelItemStack& Items) const = 0;
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//~ End FVoxelTransformableGeneratorInstance Interface
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public:
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v_flt GetValue_Transform(const FTransform& LocalToWorld, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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FVoxelMaterial GetMaterial_Transform(const FTransform& LocalToWorld, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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TVoxelRange<v_flt> GetValueRange_Transform(const FTransform& LocalToWorld, const FVoxelIntBox& WorldBounds, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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T Get_Transform(const FTransform& LocalToWorld, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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void Get_Transform(const FTransform& LocalToWorld, TVoxelQueryZone<T>& QueryZone, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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T Get_Transform(const FTransform& LocalToWorld, const FIntVector& P, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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T GetCustomOutput_Transform(const FTransform& LocalToWorld, T DefaultValue, FName Name, v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const;
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template<typename T>
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TVoxelRange<T> GetCustomOutputRange_Transform(const FTransform& LocalToWorld, TVoxelRange<T> DefaultValue, FName Name, const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const;
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};
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VOXEL_DEPRECATED(1.2, "Please use FVoxelGeneratorInstance instead of FVoxelWorldGeneratorInstance.")
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typedef FVoxelGeneratorInstance FVoxelWorldGeneratorInstance;
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VOXEL_DEPRECATED(1.2, "Please use FVoxelTransformableGeneratorInstance instead of FVoxelTransformableWorldGeneratorInstance.")
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typedef FVoxelTransformableGeneratorInstance FVoxelTransformableWorldGeneratorInstance;
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