Implement pause menu

Source/MyProject3/SpaceShooterHUD.cpp

@@ -84,11 +84,18 @@ void ASpaceShooterHUD::DrawHUD()
     ASpaceShooterGameMode* GameMode = GetGameMode();
     if (!GameMode) return;
 
-    if (!GameMode->IsGameOver())
+    APlayerController* PC = GetWorld()->GetFirstPlayerController();
+    bool bIsPaused = PC && PC->IsPaused();
+
+    if (!GameMode->IsGameOver() && bIsPaused)
+    {
+        DrawPauseScreen();
+    }
+    if (!GameMode->IsGameOver() && !bIsPaused)
     {
         DrawGameplayHUD();
     }
-    else
+	if (GameMode->IsGameOver())
     {
         DrawGameOverScreen();
     }
@@ -113,6 +120,51 @@ void ASpaceShooterHUD::DrawGameplayHUD()
     DrawStatusBars();
 }
 
+void ASpaceShooterHUD::DrawPauseScreen()
+{
+    if (!Canvas) return;
+
+    // Draw semi-transparent dark overlay (this creates a "blur-like" effect)
+    FCanvasBoxItem BoxItem(FVector2D(0, 0), FVector2D(Canvas->SizeX, Canvas->SizeY));
+    BoxItem.SetColor(FLinearColor(0.0f, 0.0f, 0.0f, 0.75f));  // More opaque for better readability
+    Canvas->DrawItem(BoxItem);
+
+    // Draw "GAME PAUSED" text
+    FString PauseText = TEXT("GAME PAUSED");
+    float TextWidth, TextHeight;
+    GetTextSize(PauseText, TextWidth, TextHeight, TextFont, PauseTextScale);
+
+    // Center the text
+    float PosX = (Canvas->SizeX - TextWidth) * 0.5f;
+    float PosY = (Canvas->SizeY - TextHeight) * 0.5f;
+
+    // Draw text shadow for better visibility
+    DrawText(PauseText,
+        FLinearColor(0.0f, 0.0f, 0.0f, 1.0f),
+        PosX + 2.0f,
+        PosY + 2.0f,
+        TextFont,
+        PauseTextScale);
+
+    // Draw main text
+    DrawText(PauseText,
+        FLinearColor(1.0f, 1.0f, 1.0f, 1.0f),
+        PosX,
+        PosY,
+        TextFont,
+        PauseTextScale);
+
+    // Draw "Press ESC to Resume" text
+    FString ResumeText = TEXT("Press ESC to Resume");
+    GetTextSize(ResumeText, TextWidth, TextHeight, TextFont);
+
+    DrawText(ResumeText,
+        FLinearColor(1.0f, 1.0f, 1.0f, 0.8f),
+        (Canvas->SizeX - TextWidth) * 0.5f,
+        PosY + TextHeight * 3,
+        TextFont);
+}
+
 void ASpaceShooterHUD::DrawGameOverBackground()
 {
     if (!Canvas) return;

Source/MyProject3/SpaceShooterHUD.h

@@ -58,6 +58,9 @@ protected:
     UPROPERTY(EditAnywhere, Category = "HUD|GameOver")
     float PulsateMaxAlpha = 1.0f;
 
+	UPROPERTY(EditAnywhere, Category = "HUD|Pause")
+	float PauseTextScale = 2.0f;
+
 private:
     void DrawGameplayHUD();
     void DrawGameOverScreen();
@@ -65,6 +68,8 @@ private:
     class ASpaceShooterGameMode* GetGameMode() const;
     class ASpaceshipPawn* GetPlayerPawn() const;
 
+	void DrawPauseScreen();
+
     float GameOverStartTime;
     void DrawGameOverBackground();
     void DrawGameOverText(const FString& Text, const FVector2D& Position, const FLinearColor& Color, float Scale = 1.0f);

Source/MyProject3/SpaceshipPlayerController.cpp

@@ -0,0 +1,61 @@
+#include "SpaceshipPlayerController.h"
+#include "EnhancedInputComponent.h"
+#include "EnhancedInputSubsystems.h"
+#include "Components/PostProcessComponent.h"
+#include "Materials/MaterialInstanceDynamic.h"
+#include "SpaceShooterGameMode.h"
+
+ASpaceshipPlayerController::ASpaceshipPlayerController()
+{
+    // Don't automatically show mouse cursor
+    bShowMouseCursor = false;
+}
+
+void ASpaceshipPlayerController::BeginPlay()
+{
+    Super::BeginPlay();
+
+    // Add Input Mapping Context
+    if (UEnhancedInputLocalPlayerSubsystem* Subsystem = ULocalPlayer::GetSubsystem<UEnhancedInputLocalPlayerSubsystem>(GetLocalPlayer()))
+    {
+        if (DefaultMappingContext)
+        {
+            Subsystem->AddMappingContext(DefaultMappingContext, 0);
+        }
+    }
+}
+
+void ASpaceshipPlayerController::SetupInputComponent()
+{
+    Super::SetupInputComponent();
+
+    if (UEnhancedInputComponent* EnhancedInputComponent = CastChecked<UEnhancedInputComponent>(InputComponent))
+    {
+        // Bind the pause action
+        if (PauseAction)
+        {
+            EnhancedInputComponent->BindAction(PauseAction, ETriggerEvent::Started,
+                this, &ASpaceshipPlayerController::HandlePauseAction);
+        }
+    }
+}
+
+void ASpaceshipPlayerController::HandlePauseAction()
+{
+    // Don't allow pausing if game is over
+    if (ASpaceShooterGameMode* GameMode = Cast<ASpaceShooterGameMode>(GetWorld()->GetAuthGameMode()))
+    {
+        if (GameMode->IsGameOver())
+        {
+            return;
+        }
+    }
+
+    bool bIsPaused = IsPaused();
+    SetPause(!bIsPaused);
+
+    // Show cursor only when paused, hide when resuming
+    bShowMouseCursor = !bIsPaused;
+
+	// To fix resume not working, don't change input mode from game only to UI only since in UI mode the key mapping for pause won't work
+}

Source/MyProject3/SpaceshipPlayerController.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include "CoreMinimal.h"
+#include "GameFramework/PlayerController.h"
+#include "SpaceshipPlayerController.generated.h"
+
+UCLASS()
+class MYPROJECT3_API ASpaceshipPlayerController : public APlayerController
+{
+    GENERATED_BODY()
+
+public:
+    ASpaceshipPlayerController();
+
+protected:
+    virtual void BeginPlay() override;
+    virtual void SetupInputComponent() override;
+
+    // Input Action for pausing
+    UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Input")
+    class UInputAction* PauseAction;
+
+    // Input Mapping Context
+    UPROPERTY(EditAnywhere, BlueprintReadOnly, Category = "Input")
+    class UInputMappingContext* DefaultMappingContext;
+
+private:
+    // Post process component for blur effect
+    UPROPERTY()
+    class UPostProcessComponent* BlurPostProcess;
+
+    void HandlePauseAction();
+};