GAME 1303 — Tier 1 Shared Script Kit

Thirteen C# scripts that give every 2D project in the class a working player, damage, respawn, collectibles, camera, scene flow, audio, HUD, moving platforms and parallax. Written for Unity 6 with the Input System package, Cinemachine 3, and TextMeshPro.

Requirements (Package Manager)

• Input System (Edit → Project Settings → Player → Active Input Handling = Input System Package or Both)
• Cinemachine (3.x on Unity 6; the camera script has a two-line change noted for 2.x)
• TextMeshPro essentials (Window → TextMeshPro → Import TMP Essentials)

Folder layout

Scripts/

• Player/ [[PlayerController2D.cs]], [[PlayerAnimatorBridge.cs]]
• Combat/ Health, [[DamageOnContact.cs]]
• Level/ Checkpoint, [[RespawnManager.cs]]
• Collectibles/ [[ItemType.cs]] (ScriptableObject), [[Collectible.cs]], [[CollectionTracker.cs]]
• Camera/ [[CameraTargetAssigner.cs]] (Cinemachine helper)
• Managers/ [[SceneLoader.cs]], [[GameManager.cs]], [[AudioManager.cs]]
• UI/ [[HUDController.cs]]
• Environment/ [[MovingPlatform.cs]], [[ParallaxBackground.cs]]

Drop the whole Scripts folder into Assets/.

Tags and layers to create first

• Tags: Player, Enemy
• Layers: Ground

15-minute scene checklist

1. Player: Sprite + Rigidbody2D (Freeze Rotation Z, Gravity Scale 3, Continuous) + Collider2D + PlayerInput (Behavior = Send Messages, use the default actions asset) + PlayerController2D + Health + Animator + PlayerAnimatorBridge. Tag it Player. Add an empty child GroundCheck at the feet and assign it. Set Ground Layer = Ground.
2. Ground: Tilemap or sprites with colliders on layer Ground.
3. Camera: GameObject → Cinemachine → 2D Camera. Add CameraTargetAssigner to the CinemachineCamera. Add CinemachineConfiner2D and a PolygonCollider2D bounds object if the level has edges.
4. Managers: one empty object each — GameManager, RespawnManager, CollectionTracker, AudioManager, SceneLoader (the last two survive scene loads on their own).
5. Wire events (Inspector, click +):
   • Player Health.OnDied → RespawnManager.OnPlayerDied
   • Player Health.OnHealthChanged → HUDController.UpdateHealth
   • RespawnManager.OnLivesChanged → HUDController.UpdateLives
   • RespawnManager.OnGameOver → GameManager.GameOver
   • CollectionTracker.OnCountChanged → HUDController.UpdateItemCount
   • Player PlayerController2D.OnJumped → AudioManager.PlaySFX (string) "jump"
6. Hazards: any sprite + collider + DamageOnContact. Tick Instant Kill for pits and acid.
7. Pickups: create an ItemType asset (Create → GAME1303 → Item Type), make a prefab with sprite + trigger collider + Collectible, assign the asset.
8. Checkpoints: empty + trigger collider + Checkpoint.
9. Level exit: trigger with a tiny script or UnityEvent that calls GameManager.Instance.LevelComplete() then SceneLoader.Instance.LoadNext().

Animator parameters expected by PlayerAnimatorBridge

Speed (float), IsGrounded (bool), YVelocity (float), Jump / Hurt / Dead (triggers).

Which games skip which scripts

• Top-down (Last Delivery, Weenie Maze): skip PlayerController2D, MovingPlatform, ParallaxBackground; use the Tier 5 TopDownMover / GridMover when written.
• Hot Air: skip PlayerController2D (balloon has its own controller in Tier 3); everything else applies.
• Cozy Critters / Store Sim: managers, audio, HUD, and Collectible only.
• Static camera games (Weenie Maze, MythoClash, Cozy Critters): no CameraTargetAssigner; leave the Cinemachine camera's Follow empty.

Notes for the instructor

• Every script has a SETUP block at the top written for students; they shouldn't need this README.
• Health uses UnityEvent<int,int> — in the Inspector these show under Dynamic when you pick HUDController.UpdateHealth, so students must choose the dynamic version, not the static one.
• PlayerController2D and DamageOnContact use rb.linearVelocity (Unity 6 API). If anyone is on Unity 2022 or earlier, replace every rb.linearVelocity with rb.velocity.
• No Unity here to compile against, so please do one import pass in a fresh project before handing these out; I've reviewed them by hand but a compiler is the real test.
• Singleton managers use Instance and null-check with ?. so a scene that lacks one (e.g. no AudioManager yet) doesn't throw.