Initial HUD implementation and timer + game over

Source/MyProject3/SpaceShooterGameMode.h

@@ -44,6 +44,12 @@ public:
     virtual void StartPlay() override;
     virtual void Tick(float DeltaTime) override;
 
+    void IncrementKillCount();
+    void RestartGame();
+    int32 GetKillCount() const { return KillCount; }
+    float GetRemainingTime() const { return RemainingTime; }
+    bool IsGameOver() const { return bIsGameOver; }
+
 protected:
     UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Spawning")
     TSubclassOf<class AEnemySpaceship> EnemyClass;
@@ -78,6 +84,18 @@ protected:
     UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Spawning|Difficulty")
     int32 DifficultyInterval = 30;
 
+    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Game Rules")
+    float GameDuration = 30.0f;  // 3 minutes default
+
+    UPROPERTY(BlueprintReadOnly, Category = "Game Stats")
+    int32 KillCount;
+
+    UPROPERTY(BlueprintReadOnly, Category = "Game Stats")
+    float RemainingTime;
+
+    UPROPERTY(BlueprintReadOnly, Category = "Game State")
+    bool bIsGameOver;
+
 private:
     FTimerHandle EnemySpawnTimer;
     FTimerHandle DifficultyTimer;
@@ -99,4 +117,8 @@ private:
 
     // New helper method to ensure minimum spawn distance
     FVector EnsureMinimumSpawnDistance(const FVector& ProposedLocation, const FVector& PlayerLocation);
+
+    void EndGame();
+    void UpdateGameTimer();
+    FTimerHandle GameTimerHandle;
 };