Migrate into your project

Use this when you want arcade-shooter systems inside a project you already have, instead of extending the standalone FAB template.

Migration overview

flowchart LR
  FAB["FAB template project"] --> Migrate["Asset Actions → Migrate"]
  Migrate --> Target["Your project Content/"]
  Target --> Collision["Add Asteroid channel"]
  Collision --> GameMode["Set BP_SpaceRockGameMode"]
  GameMode --> Play["Play DemoMap copy"]

Example — minimal migrate into `MyGame`

Assume your project lives at C:/Projects/MyGame/.

Open the Space Rock Shooter Template FAB project.
In Content Browser, select the folder SpaceShooterTemplate.
Right-click → Asset Actions → Migrate → choose C:/Projects/MyGame/Content/.
Confirm dependency list (includes StarterContent/Particles used by Explosion Effects).

Minimum folders:

Content/SpaceShooterTemplate/
├── Blueprints/          (all subfolders)
├── Meshes/
├── Materials/
├── Textures/
├── Sounds/
├── StarterContent/Particles/
└── Maps/DemoMap         (optional reference map)

Example — add the Asteroid collision channel

Merge into your project’s Config/DefaultEngine.ini:

+DefaultChannelResponses=(Channel=ECC_GameTraceChannel1,Name="Asteroid",DefaultResponse=ECR_Block,bTraceType=False,bStaticObject=False)

Or use Edit → Project Settings → Engine → Collision → Object Channels → New Object Channel… → name it Asteroid.

Without this channel, BP_Projectile hits and ship–rock On Component Hit will not behave as designed.

Example — first playable test map

Migrate content (above).
Duplicate SpaceShooterTemplate/Maps/DemoMap → Content/MyGame/Maps/AsteroidTest.
Open AsteroidTest → World Settings:
- Game Mode Override → BP_SpaceRockGameMode
Open BP_SpaceRockGameMode → confirm Default Pawn Class = BP_Spaceship (shipped default).
Edit → Project Settings → Maps & Modes → set Game Default Map to AsteroidTest (optional).
Press Play — you should see WBP_PlayerHUD (spawned by the game mode, not the engine HUD class).

Input mappings

BP_Spaceship uses legacy axis/action events:

Name	Type	Graph event
MoveForward	Axis	InputAxis MoveForward
MoveRight	Axis	InputAxis MoveRight
Fire	Action	InputAction Fire

Copy the same mappings from the template project’s Project Settings → Input, or rebind these events to your Enhanced Input actions.

Save game slot

BP_SaveGameManager defaults:

Property	Value
Save Game Slot Name	`SpaceShooterSaveGame`
Save Game User Index	`0`

Persisted struct ST_SaveGame currently stores High Score only. Rename the slot in BP_SaveGameManager if another game on the same PC already uses SpaceShooterSaveGame.

Verification checklist

WBP_PlayerHUD start screen appears
Start Game enables ship + asteroid spawn
Movement, fire, screen wrap work
Rocks destroy, award score, show WBP_HitDamage
Lives decrease on collision; game over + restart work
High score persists after editor restart

Troubleshooting

Issue	Fix
Projectiles pass through rocks	Add Asteroid channel; check BP_Projectile collision
Blank screen on play	Set Game Mode Override; ensure game mode spawns WBP_PlayerHUD in Event Graph
Missing explosion particles	Migrate `StarterContent/Particles/` or repoint Explosion Effects on BP_SpaceRock
Broken references	Right-click migrated folder → Fix Up Redirectors in Folder