zhangqing
dd16f0123a
功能改进： - HeatRegion后自动上传温度数据到GPU - Tick中GPU计算后自动下载温度数据到CPU - DownloadTemperatureDataFromGPU回调中自动更新顶点颜色 调试功能： - HeatRegion后输出距离Hit点最近的4个体素温度 - 包含体素坐标、距离和温度信息，便于调试温度计算 配置优化： - 温度更新间隔从0.1秒调整为1.0秒，降低性能开销 技术细节： - 使用异步任务确保线程安全 - GPU数据上传前检查缓冲区就绪状态 - 完整的CPU↔GPU温度数据同步流程 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
290 lines
8.2 KiB
C++
290 lines
8.2 KiB
C++
// Fill out your copyright notice in the Description page of Project Settings.
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#pragma once
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#include "CoreMinimal.h"
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#include "DynamicMeshActor.h"
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#include <atomic>
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#include "DynamicIronBlock.generated.h"
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/**
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* 温度体素结构 - 存储单个体素的温度和塑性数据
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*/
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USTRUCT(BlueprintType)
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struct FTemperatureVoxel
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{
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GENERATED_BODY()
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// 温度值（摄氏度）
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UPROPERTY()
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float Temperature;
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// 塑性系数（0-1），由温度计算得出
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UPROPERTY()
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float PlasticityCoefficient;
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// 标志位（bit 0: 是否为表面体素）
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UPROPERTY()
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uint8 Flags;
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FTemperatureVoxel()
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: Temperature(20.0f)
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, PlasticityCoefficient(0.0f)
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, Flags(0)
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{}
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};
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/**
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* 动态铁块Actor，继承自ADynamicMeshActor
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* 用于模拟铁匠打铁游戏中的铁块，支持动态变形
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* 包含基于体素的温度模拟系统
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*/
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UCLASS()
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class BLADESMITH_API ADynamicIronBlock : public ADynamicMeshActor
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{
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GENERATED_BODY()
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public:
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// 构造函数
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ADynamicIronBlock();
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// Box的大小
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block")
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FVector BoxSize = FVector(100.0f, 100.0f, 100.0f);
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// Box的细分数
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block")
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FVector NumSubDivide = FVector(1.0f, 1.0f, 1.0f);
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// BVH参数
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block")
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bool bEnableFastBuild;
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// 铁块材质
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block")
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UMaterialInterface* IronMaterial;
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// 形变衰减指数（控制边缘过渡的平滑度）- 材质物理特性
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block|Material Properties")
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float FalloffExponent = 2.0f;
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// 材料凸起比例（凸起区域半径相对于压缩区域的倍数）
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block|Material Properties")
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float BulgeRatio = 0.8f;
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// 材料凸起强度（控制凸起高度，基于体积守恒）
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Iron Block|Material Properties")
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float BulgeStrength = 0.5f;
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// ========== 温度系统参数 ==========
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// 温度体素大小（毫米）
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System", meta = (ClampMin = "3.0", ClampMax = "10.0"))
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float TemperatureVoxelSize = 5.0f;
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// 热传导系数
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System", meta = (ClampMin = "0.0", ClampMax = "1.0"))
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float ThermalConductivity = 0.1f;
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// 表面冷却速率
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System", meta = (ClampMin = "0.0", ClampMax = "1.0"))
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float CoolingRate = 0.05f;
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// 环境温度（摄氏度）
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System")
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float AmbientTemperature = 20.0f;
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// 锻造温度下限（摄氏度）- 开始软化
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System")
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float ForgeTemperatureMin = 800.0f;
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// 锻造温度上限（摄氏度）- 完全软化
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System")
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float ForgeTemperatureMax = 1200.0f;
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// 是否启用温度系统
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UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Temperature System")
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bool bEnableTemperatureSystem = true;
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/**
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* 测试函数 - 加热指定区域
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* @param WorldCenter 加热中心位置（世界坐标）
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* @param Radius 加热半径
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* @param TemperatureIncrease 温度增量
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*/
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UFUNCTION(BlueprintCallable, Category = "Temperature System")
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void HeatRegion(FVector WorldCenter, float Radius, float TemperatureIncrease);
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/**
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* 受击函数 - 模拟圆形铁锤锤击金属表面产生塑性形变
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* @param HitLocation 锤击位置（世界坐标）
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* @param HitNormal 锤击法线方向
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* @param ImpactRadius 锤击影响半径
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* @param ImpactDepth 锤击形变深度
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* @param ImpactForce 锤击力度（0-1），影响形变深度
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*/
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UFUNCTION(BlueprintCallable, Category = "Hammer Impact")
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void OnHammerImpact(FVector HitLocation, FVector HitNormal, float ImpactRadius, float ImpactDepth, float ImpactForce = 1.0f);
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protected:
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// 当游戏开始或生成时调用
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virtual void BeginPlay() override;
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// 每帧更新
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virtual void Tick(float DeltaTime) override;
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// Actor销毁时调用
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virtual void EndPlay(const EEndPlayReason::Type EndPlayReason) override;
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// 初始化时调用，用于设置Box网格和BVH
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virtual void OnConstruction(const FTransform& Transform) override;
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private:
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/**
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* 创建Box网格并生成BVH
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*/
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void InitializeBoxMesh();
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/**
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* 生成BVH加速结构
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*/
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void GenerateBVH();
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// ========== 温度系统数据 ==========
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// 温度体素网格（CPU侧）
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TArray<FTemperatureVoxel> TemperatureGrid;
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// 温度网格分辨率
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FIntVector TemperatureResolution;
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// ========== 温度系统方法 ==========
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/**
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* 计算温度网格分辨率（基于BoxSize和TemperatureVoxelSize）
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*/
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void CalculateTemperatureResolution();
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/**
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* 初始化温度体素网格
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*/
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void InitializeTemperatureGrid();
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/**
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* 获取体素索引
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*/
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FORCEINLINE int32 GetTemperatureIndex(int32 X, int32 Y, int32 Z) const
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{
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return X + Y * TemperatureResolution.X + Z * TemperatureResolution.X * TemperatureResolution.Y;
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}
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FORCEINLINE int32 GetTemperatureIndex(const FIntVector& Coord) const
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{
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return GetTemperatureIndex(Coord.X, Coord.Y, Coord.Z);
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}
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/**
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* 检查体素坐标是否有效
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*/
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FORCEINLINE bool IsValidTemperatureCoord(int32 X, int32 Y, int32 Z) const
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{
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return X >= 0 && X < TemperatureResolution.X &&
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Y >= 0 && Y < TemperatureResolution.Y &&
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Z >= 0 && Z < TemperatureResolution.Z;
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}
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FORCEINLINE bool IsValidTemperatureCoord(const FIntVector& Coord) const
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{
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return IsValidTemperatureCoord(Coord.X, Coord.Y, Coord.Z);
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}
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/**
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* 判断是否为表面体素
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*/
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bool IsSurfaceTemperatureVoxel(int32 X, int32 Y, int32 Z) const;
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/**
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* 从温度网格采样温度（三线性插值）
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* @param LocalPosition 局部坐标位置
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* @return 插值后的温度值
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*/
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float SampleTemperatureAtPosition(const FVector& LocalPosition) const;
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/**
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* 从温度网格采样塑性系数（三线性插值）
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* @param LocalPosition 局部坐标位置
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* @return 插值后的塑性系数
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*/
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float SamplePlasticityAtPosition(const FVector& LocalPosition) const;
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/**
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* 根据温度计算塑性系数
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* @param Temperature 温度值
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* @return 塑性系数（0-1）
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*/
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float CalculatePlasticityFromTemperature(float Temperature) const;
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/**
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* 更新体素的塑性系数（基于当前温度）
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*/
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void UpdatePlasticityCoefficient(FTemperatureVoxel& Voxel);
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/**
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* 温度到颜色的映射（黑体辐射近似）
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* @param Temperature 温度值
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* @return 颜色
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*/
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FLinearColor TemperatureToColor(float Temperature) const;
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/**
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* 更新网格顶点颜色以显示温度
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*/
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void UpdateVertexColors();
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// ========== GPU计算系统（Phase 2） ==========
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// GPU缓冲区（Ping-Pong双缓冲）
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FBufferRHIRef TemperatureBufferA; // 温度缓冲A
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FBufferRHIRef TemperatureBufferB; // 温度缓冲B
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FBufferRHIRef PlasticityBuffer; // 塑性系数缓冲
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FBufferRHIRef SurfaceVoxelFlagsBuffer; // 表面体素标志缓冲
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FUnorderedAccessViewRHIRef TemperatureUAV_A; // 温度缓冲A的UAV
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FUnorderedAccessViewRHIRef TemperatureUAV_B; // 温度缓冲B的UAV
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FUnorderedAccessViewRHIRef PlasticityUAV; // 塑性系数缓冲的UAV
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FShaderResourceViewRHIRef TemperatureSRV_A; // 温度缓冲A的SRV
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FShaderResourceViewRHIRef TemperatureSRV_B; // 温度缓冲B的SRV
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FShaderResourceViewRHIRef SurfaceVoxelSRV; // 表面体素标志的SRV
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bool bUseBufferA = true; // Ping-Pong标志
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float TimeSinceLastUpdate = 0.0f; // 距离上次温度更新的时间
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float TemperatureUpdateInterval = 1.0f; // 温度更新间隔（秒）
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// GPU缓冲区是否已准备好（线程安全标志）
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std::atomic<bool> bGPUBuffersReady{false};
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/**
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* 创建GPU缓冲区
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*/
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void CreateGPUBuffers();
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/**
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* 释放GPU缓冲区
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*/
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void ReleaseGPUBuffers();
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/**
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* 上传温度数据到GPU
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*/
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void UploadTemperatureDataToGPU();
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/**
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* 从GPU下载温度数据
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*/
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void DownloadTemperatureDataFromGPU();
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/**
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* 调度GPU温度计算
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* @param DeltaTime 时间步长
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*/
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void DispatchTemperatureCompute(float DeltaTime);
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}; |