Fix graphics settings

UnrealProject/Lost_Edge/Source/Lost_Edge/Private/CommonFunctions.h

@@ -117,7 +117,9 @@ public:
     static TArray<int32> GetRandomIntArray(int32 size = 16, int32 min = 0, int32 max = 16);
 
     template<typename T>
-    static TArray<T> ArrayDiff(const TArray<T>& a, const TArray<T>& b);
+    static TArray<T> ArraySymmetricDiff(const TArray<T>& a, const TArray<T>& b);
+    template<typename T>
+    static TArray<T> ArrayIntersection(const TArray<T>& a, const TArray<T>& b);
     template<typename T>
     static void ArrayRemoveFirstFromEnd(TArray<T>& array, T element);
 
@@ -134,15 +136,15 @@ namespace SlowMotion
 }
 
 template<typename T>
-inline TArray<T> UCommonFunctions::ArrayDiff(const TArray<T>& a, const TArray<T>& b)
+inline TArray<T> UCommonFunctions::ArraySymmetricDiff(const TArray<T>& a, const TArray<T>& b)
 {
-    TSet<T> result;
-
     if(a.Num() == 0)
         return b;
     else if(b.Num() == 0)
         return a;
 
+    TSet<T> result;
+
     for(auto& i : a)
         if(!b.Contains(i))
             result.Add(i);
@@ -154,6 +156,32 @@ inline TArray<T> UCommonFunctions::ArrayDiff(const TArray<T>& a, const TArray<T>
     return result.Array();
 }
 
+template<typename T>
+inline TArray<T> UCommonFunctions::ArrayIntersection(const TArray<T>& a, const TArray<T>& b)
+{
+    if(a.Num() == 0)
+        return {};
+    else if(b.Num() == 0)
+        return {};
+
+    TSet<T> result;
+
+    if(a.Num() < b.Num())
+    {
+        for(auto& i : a)
+            if(b.Contains(i))
+                result.Add(i);
+    }
+    else
+    {
+        for(auto& i : b)
+            if(a.Contains(i))
+                result.Add(i);
+    }
+
+    return result.Array();
+}
+
 template<typename T>
 inline void UCommonFunctions::ArrayRemoveFirstFromEnd(TArray<T>& array, T element)
 {

UnrealProject/Lost_Edge/Source/Lost_Edge/Private/GraphicsSettingsHelper.cpp

@@ -8,10 +8,14 @@
 #include "CommonTexts.h"
 #include "CustomGameSettings.h"
 
+#include <Kismet/KismetSystemLibrary.h>
 #include <optional>
 
 namespace
 {
+    // some 16:9 resolutions (eg. 1366x768) are nonmathematical bullshit, therefore we try parse them with tolerance
+    constexpr float aspectRatioTolerance = 0.01f;
+
     const FIntPoint ipDefaultWindowPosition = { 0, 0 };
     std::optional<FIntPoint> ipPreviousWindowPosition;
     constexpr int32 iDefaultMonitorId = 0;
@@ -19,7 +23,7 @@ namespace
     std::optional<FIntPoint> ipPreviousResolution;
     constexpr float fDefaultResolutionScale = 100.0f;
     constexpr int32 iDefaultFrameRateLimit = 120;
-    constexpr EDisplayMode eDefaultDisplayMode = EDisplayMode::Fullscreen;
+    constexpr EDisplayMode eDefaultDisplayMode = EDisplayMode::Borderless;
     std::optional<EDisplayMode> ePreviousDisplayMode;
     constexpr bool bDefaultVSyncEnabled = false;
     constexpr int32 eDefaultAntiAliasingMethod = static_cast<int32>(ELostEdgeAntiAliasingMethod::FXAA);
@@ -54,7 +58,7 @@ void UGraphicsSettingsHelper::SetDefaults(UCustomGameSettings* settings)
         settings->ResolutionSizeX = res.X;
         settings->ResolutionSizeY = res.Y;
     }
-    settings->bUseDynamicResolution = true;
+    settings->SetDynamicResolutionEnabled(true);
     settings->FrameRateLimit = GetDefaultFrameRateLimit(settings);
     settings->SetResolutionScaleValueEx(fDefaultResolutionScale);
     settings->FullscreenMode = DisplayToWindowMode(GetDefaultDisplayMode(settings));
@@ -66,6 +70,7 @@ void UGraphicsSettingsHelper::ApplySettings(UCustomGameSettings* settings)
     if(!settings)
         return;
 
+    CenterWindowPosition(settings);
     if(GEngine && GEngine->GameViewport)
         if(auto window = GEngine->GameViewport->GetWindow())
             window->MoveWindowTo(settings->GetWindowPosition());
@@ -94,15 +99,41 @@ FIntPoint UGraphicsSettingsHelper::GetWindowPosition([[maybe_unused]] UCustomGam
 
 void UGraphicsSettingsHelper::SetWindowPosition(UCustomGameSettings* settings, const FIntPoint& pos)
 {
-    if(settings)
-    {
+    if(!settings)
+        return;
+
     if(ipPreviousWindowPosition == pos)
         ipPreviousWindowPosition.reset();
     else
         ipPreviousWindowPosition = GetWindowPosition(settings);
 
-        settings->SetWindowPosition(pos.X, pos.Y);
+    settings->SetWindowPosition(std::max(0, pos.X), std::max(0, pos.Y));
+}
+
+void UGraphicsSettingsHelper::CenterWindowPosition(UCustomGameSettings* settings)
+{
+    if(!settings)
+        return;
+
+    FIntPoint position;
+    if(GetDisplayMode(settings) == EDisplayMode::Fullscreen)
+    {
+        position = { 0, 0 };
     }
+    else
+    {
+        auto monitors = GetAvailableMonitors();
+        int32 monitorId = GetMonitorId(settings);
+        int32 offset = 0.0f;
+        for(int32 i = 0; i < monitorId; ++i)
+            offset += monitors[i].NativeWidth;
+
+        FIntPoint monitor = GetNativeResolutionByMonitorId(monitorId);
+        FIntPoint window = GetResolution(settings);
+        position = { offset + (monitor.X - window.X) / 2, (monitor.Y - window.Y) / 2 };
+    }
+
+    SetWindowPosition(settings, position);
 }
 
 void UGraphicsSettingsHelper::RestoreWindowPosition(UCustomGameSettings* settings)
@@ -278,6 +309,10 @@ TArray<FIntPoint> UGraphicsSettingsHelper::GetAllAvailableResolutions()
 
 TArray<FIntPoint> UGraphicsSettingsHelper::GetAvailableResolutionsByMonitorId(const int32 id)
 {
+    if(auto settings = UCustomGameSettings::Get())
+        if(GetDisplayMode(settings) == EDisplayMode::Fullscreen)
+            return { GetNativeResolutionByMonitorId(GetMonitorId(settings)) };
+
     auto resolutions = GetAllAvailableResolutions();
     FIntPoint nativeRes = GetNativeResolutionByMonitorId(id);
     TArray<FIntPoint> result;
@@ -306,13 +341,37 @@ TArray<FIntPoint> UGraphicsSettingsHelper::FilterResolutionsViaAspectRatio(const
     {
         float resRatio = static_cast<float>(i.X) / i.Y;
         float aspRatio = static_cast<float>(aspectRatio.X) / aspectRatio.Y;
-        if(UCommonFunctions::FloatIsZero(resRatio - aspRatio))
+        if(std::abs(resRatio - aspRatio) < aspectRatioTolerance)
             result.Add(i);
     }
 
     return MoveTemp(result);
 }
 
+FIntPoint UGraphicsSettingsHelper::FilterClosestResolution(const TArray<FIntPoint>& resolutions, const FIntPoint& target)
+{
+    if(resolutions.IsEmpty() || target.X == 0)
+        return {};
+
+    int32 resultId = 0;
+    float coefficient = resolutions[resultId].X / (float)target.X;
+    if(UCommonFunctions::FloatIsZero(coefficient - 1))
+        return resultId;
+
+    for(int32 i = 1; i < resolutions.Num(); ++i)
+    {
+        float c = resolutions[i].X / (float)target.X;
+        if((coefficient > 1 && c < coefficient)
+            || (coefficient < 1 && c > coefficient && c < 1))
+        {
+            coefficient = c;
+            resultId = i;
+        }
+    }
+
+    return resolutions[resultId];
+}
+
 void UGraphicsSettingsHelper::SetResolution(UCustomGameSettings* settings, const FIntPoint& resolution)
 {
     if(!settings)
@@ -382,6 +441,9 @@ FIntPoint UGraphicsSettingsHelper::GetAspectRatio([[maybe_unused]] UCustomGameSe
 
 FIntPoint UGraphicsSettingsHelper::GetAspectRatioFromResolution(const FIntPoint& resolution)
 {
+    if(std::abs(resolution.X / (float)resolution.Y - 16 / 9.0f) < aspectRatioTolerance)
+        return { 16, 9 };
+
     int32 gcd = UCommonFunctions::GreatestCommonDivisor(resolution.X, resolution.Y);
     return { resolution.X / gcd, resolution.Y / gcd };
 }
@@ -393,6 +455,10 @@ FIntPoint UGraphicsSettingsHelper::GetAspectRatioOfMonitor(const int32 monitor)
 
 TArray<FIntPoint> UGraphicsSettingsHelper::GetAvailableAspectRatiousOfMonitor(const int32 monitor)
 {
+    if(auto settings = UCustomGameSettings::Get())
+        if(GetMonitorId(settings) == monitor && GetDisplayMode(settings) == EDisplayMode::Fullscreen)
+            return { GetAspectRatioFromResolution(GetNativeResolutionByMonitorId(monitor)) };
+
     TArray<FIntPoint> resolutions = GetAvailableResolutionsByMonitorId(monitor);
     if(resolutions.Num() == 0)
         return { GetAspectRatio(nullptr) };

UnrealProject/Lost_Edge/Source/Lost_Edge/Private/GraphicsSettingsHelper.h

@@ -65,6 +65,8 @@ protected: // Window position setting is on the thin edge of user safeness, ther
     UFUNCTION(BlueprintCallable, Category = "Settings|Graphics|Window")
     static void SetWindowPosition(class UCustomGameSettings* settings, const FIntPoint& pos);
     UFUNCTION(BlueprintCallable, Category = "Settings|Graphics|Window")
+    static void CenterWindowPosition(class UCustomGameSettings* settings);
+    UFUNCTION(BlueprintCallable, Category = "Settings|Graphics|Window")
     static void RestoreWindowPosition(class UCustomGameSettings* settings);
 
 public:
@@ -96,6 +98,8 @@ public:
     static TArray<FIntPoint> GetAvailableResolutionsByMonitorId(const int32 id);
     UFUNCTION(BlueprintPure, Category = "Settings|Graphics|Resolution")
     static TArray<FIntPoint> FilterResolutionsViaAspectRatio(const TArray<FIntPoint>& resolutions, const FIntPoint& aspectRatio);
+    UFUNCTION(BlueprintPure, Category = "Settings|Graphics|Resolution")
+    static FIntPoint FilterClosestResolution(const TArray<FIntPoint>& resolutions, const FIntPoint& target);
     UFUNCTION(BlueprintCallable, Category = "Settings|Graphics|Resolution")
     static void SetResolution(class UCustomGameSettings* settings, const FIntPoint& resolution);
     UFUNCTION(BlueprintCallable, Category = "Settings|Graphics|Resolution")