Create shooting game mode

Source/MyProject3/SpaceShooterGameMode.cpp

@@ -0,0 +1,71 @@
+#include "SpaceShooterGameMode.h"
+#include "SpaceshipPawn.h"
+#include "EnemySpaceship.h"
+#include "Kismet/GameplayStatics.h"
+
+ASpaceShooterGameMode::ASpaceShooterGameMode()
+{
+    PrimaryActorTick.bCanEverTick = true;
+
+    // Set default pawn class to our spaceship
+    DefaultPawnClass = ASpaceshipPawn::StaticClass();
+}
+
+void ASpaceShooterGameMode::StartPlay()
+{
+    Super::StartPlay();
+
+    // Start spawning enemies
+    GetWorldTimerManager().SetTimer(EnemySpawnTimer, this, &ASpaceShooterGameMode::SpawnEnemy,
+        EnemySpawnInterval, true);
+}
+
+void ASpaceShooterGameMode::Tick(float DeltaTime)
+{
+    Super::Tick(DeltaTime);
+}
+
+void ASpaceShooterGameMode::SpawnEnemy()
+{
+    // Count current enemies
+    TArray<AActor*> FoundEnemies;
+    UGameplayStatics::GetAllActorsOfClass(GetWorld(), AEnemySpaceship::StaticClass(), FoundEnemies);
+
+    // Only spawn if we haven't reached the maximum
+    if (FoundEnemies.Num() < MaxEnemies)
+    {
+        UWorld* World = GetWorld();
+        if (World)
+        {
+            FVector SpawnLocation = GetRandomSpawnLocation();
+            FRotator SpawnRotation = FRotator::ZeroRotator;
+            FActorSpawnParameters SpawnParams;
+            SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AdjustIfPossibleButAlwaysSpawn;
+
+            World->SpawnActor<AEnemySpaceship>(AEnemySpaceship::StaticClass(), SpawnLocation,
+                SpawnRotation, SpawnParams);
+        }
+    }
+}
+
+FVector ASpaceShooterGameMode::GetRandomSpawnLocation()
+{
+    APlayerController* PlayerController = UGameplayStatics::GetPlayerController(GetWorld(), 0);
+    if (PlayerController && PlayerController->GetPawn())
+    {
+        FVector PlayerLocation = PlayerController->GetPawn()->GetActorLocation();
+
+        // Generate random angle
+        float Angle = FMath::RandRange(0.0f, 2.0f * PI);
+
+        // Calculate spawn position in a circle around the player
+        FVector SpawnLocation;
+        SpawnLocation.X = PlayerLocation.X + SpawnRadius * FMath::Cos(Angle);
+        SpawnLocation.Y = PlayerLocation.Y + SpawnRadius * FMath::Sin(Angle);
+        SpawnLocation.Z = PlayerLocation.Z;
+
+        return SpawnLocation;
+    }
+
+    return FVector::ZeroVector;
+}