90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
|
// Copyright 2020 Phyronnaz
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
|
||
|
|
#include "VoxelGeneratorExample.h"
|
||
|
|
#include "FastNoise/VoxelFastNoise.inl"
|
||
|
|
#include "VoxelMaterialBuilder.h"
|
||
|
|
|
||
|
|
TVoxelSharedRef<FVoxelGeneratorInstance> UVoxelGeneratorExample::GetInstance()
|
||
|
|
{
|
||
|
|
return MakeVoxelShared<FVoxelGeneratorExampleInstance>(*this);
|
||
|
|
}
|
||
|
|
|
||
|
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
FVoxelGeneratorExampleInstance::FVoxelGeneratorExampleInstance(const UVoxelGeneratorExample& MyGenerator)
|
||
|
|
: Super(&MyGenerator)
|
||
|
|
, NoiseHeight(MyGenerator.NoiseHeight)
|
||
|
|
, Seed(MyGenerator.Seed)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void FVoxelGeneratorExampleInstance::Init(const FVoxelGeneratorInit& InitStruct)
|
||
|
|
{
|
||
|
|
Noise.SetSeed(Seed);
|
||
|
|
}
|
||
|
|
|
||
|
|
v_flt FVoxelGeneratorExampleInstance::GetValueImpl(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const
|
||
|
|
{
|
||
|
|
const float Height = Noise.GetPerlin_2D(X, Y, 0.01f) * NoiseHeight;
|
||
|
|
|
||
|
|
// Positive value -> empty voxel
|
||
|
|
// Negative value -> full voxel
|
||
|
|
// Value positive when Z > Height, and negative Z < Height
|
||
|
|
float Value = Z - Height;
|
||
|
|
|
||
|
|
// The voxel value is clamped between -1 and 1. That can result in a bad gradient/normal. To solve that we divide it
|
||
|
|
Value /= 5;
|
||
|
|
|
||
|
|
return Value;
|
||
|
|
}
|
||
|
|
|
||
|
|
FVoxelMaterial FVoxelGeneratorExampleInstance::GetMaterialImpl(v_flt X, v_flt Y, v_flt Z, int32 LOD, const FVoxelItemStack& Items) const
|
||
|
|
{
|
||
|
|
FVoxelMaterialBuilder Builder;
|
||
|
|
|
||
|
|
// RGB
|
||
|
|
Builder.SetMaterialConfig(EVoxelMaterialConfig::RGB);
|
||
|
|
Builder.SetColor(FColor::Red);
|
||
|
|
|
||
|
|
// Single index
|
||
|
|
//Builder.SetMaterialConfig(EVoxelMaterialConfig::SingleIndex);
|
||
|
|
//Builder.SetSingleIndex(0);
|
||
|
|
|
||
|
|
// Multi index
|
||
|
|
//Builder.SetMaterialConfig(EVoxelMaterialConfig::MultiIndex);
|
||
|
|
//Builder.AddMultiIndex(0, 0.5f);
|
||
|
|
//Builder.AddMultiIndex(1, 0.5f);
|
||
|
|
|
||
|
|
return Builder.Build();
|
||
|
|
}
|
||
|
|
|
||
|
|
TVoxelRange<v_flt> FVoxelGeneratorExampleInstance::GetValueRangeImpl(const FVoxelIntBox& Bounds, int32 LOD, const FVoxelItemStack& Items) const
|
||
|
|
{
|
||
|
|
// Return the values that GetValueImpl can return in Bounds
|
||
|
|
// Used to skip chunks where the value does not change
|
||
|
|
// Be careful, if wrong your world will have holes!
|
||
|
|
// By default return infinite range to be safe
|
||
|
|
return TVoxelRange<v_flt>::Infinite();
|
||
|
|
|
||
|
|
// Example for the GetValueImpl above
|
||
|
|
|
||
|
|
// Noise is between -1 and 1
|
||
|
|
const TVoxelRange<v_flt> Height = TVoxelRange<v_flt>(-1, 1) * NoiseHeight;
|
||
|
|
|
||
|
|
// Z can go from min to max
|
||
|
|
TVoxelRange<v_flt> Value = TVoxelRange<v_flt>(Bounds.Min.Z, Bounds.Max.Z) - Height;
|
||
|
|
|
||
|
|
Value /= 5;
|
||
|
|
|
||
|
|
return Value;
|
||
|
|
}
|
||
|
|
|
||
|
|
FVector FVoxelGeneratorExampleInstance::GetUpVector(v_flt X, v_flt Y, v_flt Z) const
|
||
|
|
{
|
||
|
|
// Used by spawners
|
||
|
|
return FVector::UpVector;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|