Change name of plugin from fixed point to fixed math

README.md

@@ -1,4 +1,4 @@
-# UnrealFixedPoint
+# UnrealFixedMath
 
 A fixed point math library for Unreal Engine.
 
@@ -18,6 +18,15 @@ This library aims to closely match the interface and functionality of the existi
 - [ ] Fixed point version of FRotator
 	- [ ] FFixedRotator class implementation
 	- [ ] Corresponding FMath and UKismetMathLibrary utility functions
+- [ ] Blueprints
+	- [ ] Expose fixed arithmatic as pure Blueprint nodes
+	- [ ] Ability to edit fixed nums with float sliders/input fields
+		- [ ] Automatically do float <> fixed conversion when tweaking fixed point numbers in the editor
+- [ ] Plugin config
+	- [ ] Configure how fixed nums are shown in editor when exposed as UPROPERTY (as floats only, as float and underlying int, as underlying int only)
+- [ ] Handling errors and edge cases
+	- [ ] Overflow
+	- [ ] Infinity
 
 ### What is fixed point math?
 

Source/UnrealFixedMath/Private/Fixed.cpp

@@ -0,0 +1,3 @@
+// UnrealFixedPoint Copyright Kevin Poretti
+
+#include "Fixed.h"

Source/UnrealFixedMath/Private/UnrealFixedMath.cpp

@@ -1,16 +1,16 @@
 // Copyright Epic Games, Inc. All Rights Reserved.
 
-#include "UnrealFixedPoint.h"
+#include "UnrealFixedMath.h"
 
-#define LOCTEXT_NAMESPACE "FUnrealFixedPointModule"
+#define LOCTEXT_NAMESPACE "FUnrealFixedMathModule"
 
-void FUnrealFixedPointModule::StartupModule()
+void FUnrealFixedMathModule::StartupModule()
 {
 	// This code will execute after your module is loaded into memory; the exact timing is specified in the .uplugin file per-module
 	
 }
 
-void FUnrealFixedPointModule::ShutdownModule()
+void FUnrealFixedMathModule::ShutdownModule()
 {
 	// This function may be called during shutdown to clean up your module.  For modules that support dynamic reloading,
 	// we call this function before unloading the module.
@@ -19,4 +19,4 @@ void FUnrealFixedPointModule::ShutdownModule()
 
 #undef LOCTEXT_NAMESPACE
 	
-IMPLEMENT_MODULE(FUnrealFixedPointModule, UnrealFixedPoint)
+IMPLEMENT_MODULE(FUnrealFixedMathModule, UnrealFixedMath)

Source/UnrealFixedMath/Private/UnrealFixedMathBPLibrary.cpp

@@ -0,0 +1,16 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "UnrealFixedMathBPLibrary.h"
+#include "UnrealFixedMath.h"
+
+UUnrealFixedMathBPLibrary::UUnrealFixedMathBPLibrary(const FObjectInitializer& ObjectInitializer)
+: Super(ObjectInitializer)
+{
+
+}
+
+float UUnrealFixedMathBPLibrary::UnrealFixedMathSampleFunction(float Param)
+{
+	return -1;
+}
+

Source/UnrealFixedMath/Public/Fixed.h

@@ -0,0 +1,57 @@
+// UnrealFixedMath Copyright Kevin Poretti
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Fixed.generated.h"
+
+/**
+ * 
+ */
+USTRUCT(BlueprintType)
+struct UNREALFIXEDMATH_API FFixed
+{
+    GENERATED_BODY()
+
+public:
+    // 48 bits for the whole portion, 16 bits for the fractional portion
+    static constexpr uint8 DecimalBitPosition = 16;
+
+	FFixed() : Data(0) { }
+
+    // int types <> FFixed conversions
+    FORCEINLINE FFixed(int64 A) { Data = A << DecimalBitPosition; }
+    FORCEINLINE operator int64() const { return Data >> DecimalBitPosition; }
+
+    /*
+    int8
+    int16
+    FORCEINLINE operator uint8()
+    */
+
+    // floating point types <> FFixed conversions
+    FORCEINLINE FFixed(float A) { Data = static_cast<int64>(A * (1 << DecimalBitPosition) + (A >= 0 ? 0.5 : -0.5)); }
+    FORCEINLINE operator float() const { return static_cast<float>(Data) / (1 << DecimalBitPosition); }
+
+    FORCEINLINE FFixed(double A) { Data = static_cast<int64>(A * (1 << DecimalBitPosition) + (A >= 0 ? 0.5 : -0.5)); }
+    FORCEINLINE operator double() const { return static_cast<double>(Data) / (1 << DecimalBitPosition); }
+
+    // Arithmetic
+    FFixed operator+(const FFixed& Other) const { return Data + Other.Data; }
+    FFixed operator+=(const FFixed& Other) { Data += Other.Data; return Data; }
+
+    FFixed operator-(const FFixed& Other) const { return Data - Other.Data; }
+    FFixed operator-=(const FFixed& Other) { Data -= Other.Data; return Data; }
+
+    // Other overloads
+    FFixed operator=(const FFixed& Other) { Data = Other.Data; return Data; }
+    FFixed operator-() const { return -Data; }
+
+private:
+    int64 Data;
+};
+
+namespace FFixedMath
+{
+    
+}

Source/UnrealFixedMath/Public/UnrealFixedMath.h

@@ -4,7 +4,7 @@
 
 #include "Modules/ModuleManager.h"
 
-class FUnrealFixedPointModule : public IModuleInterface
+class FUnrealFixedMathModule : public IModuleInterface
 {
 public:
 

Source/UnrealFixedMath/Public/UnrealFixedMathBPLibrary.h

@@ -3,7 +3,7 @@
 #pragma once
 
 #include "Kismet/BlueprintFunctionLibrary.h"
-#include "UnrealFixedPointBPLibrary.generated.h"
+#include "UnrealFixedMathBPLibrary.generated.h"
 
 /* 
 *	Function library class.
@@ -23,10 +23,10 @@
 *	https://wiki.unrealengine.com/Custom_Blueprint_Node_Creation
 */
 UCLASS()
-class UUnrealFixedPointBPLibrary : public UBlueprintFunctionLibrary
+class UUnrealFixedMathBPLibrary : public UBlueprintFunctionLibrary
 {
 	GENERATED_UCLASS_BODY()
 
-	UFUNCTION(BlueprintCallable, meta = (DisplayName = "Execute Sample function", Keywords = "UnrealFixedPoint sample test testing"), Category = "UnrealFixedPointTesting")
+	UFUNCTION(BlueprintCallable, meta = (DisplayName = "Execute Sample function", Keywords = "UnrealFixedMath sample test testing"), Category = "UnrealFixedMathTesting")
-	static float UnrealFixedPointSampleFunction(float Param);
+	static float UnrealFixedMathSampleFunction(float Param);
 };

Source/UnrealFixedMath/UnrealFixedMath.Build.cs

@@ -1,10 +1,10 @@
-// Some copyright should be here...
+// UnrealFixedMath Copyright Kevin Poretti
 
 using UnrealBuildTool;
 
-public class UnrealFixedPoint : ModuleRules
+public class UnrealFixedMath : ModuleRules
 {
-	public UnrealFixedPoint(ReadOnlyTargetRules Target) : base(Target)
+	public UnrealFixedMath(ReadOnlyTargetRules Target) : base(Target)
 	{
 		PCHUsage = ModuleRules.PCHUsageMode.UseExplicitOrSharedPCHs;
 		

Source/UnrealFixedPoint/Private/UnrealFixedPointBPLibrary.cpp

@@ -1,16 +0,0 @@
-// Copyright Epic Games, Inc. All Rights Reserved.
-
-#include "UnrealFixedPointBPLibrary.h"
-#include "UnrealFixedPoint.h"
-
-UUnrealFixedPointBPLibrary::UUnrealFixedPointBPLibrary(const FObjectInitializer& ObjectInitializer)
-: Super(ObjectInitializer)
-{
-
-}
-
-float UUnrealFixedPointBPLibrary::UnrealFixedPointSampleFunction(float Param)
-{
-	return -1;
-}
-

UnrealFixedMath.uplugin

@@ -2,7 +2,7 @@
 	"FileVersion": 3,
 	"Version": 1,
 	"VersionName": "1.0",
-	"FriendlyName": "UnrealFixedPoint",
+	"FriendlyName": "Unreal Fixed Math",
 	"Description": "This library provides a fixed point number primitive with corresponding data types that are useful for game development (i.e. vector, rotator, transform).",
 	"Category": "Math",
 	"CreatedBy": "Kevin Poretti",
@@ -16,7 +16,7 @@
 	"Installed": false,
 	"Modules": [
 		{
-			"Name": "UnrealFixedPoint",
+			"Name": "UnrealFixedMath",
 			"Type": "Runtime",
 			"LoadingPhase": "PreLoadingScreen"
 		}