Adding trick spawn and movement to Experiment scene

AGENTS.md

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+# GGJ2026 Agent Notes
+
+These notes are for coding agents working in this repo. Keep them short, actionable, and up to date.
+
+## Project Overview
+- Unity project (2D). Main code in `Assets/Scripts/`.
+- Input uses Unity Input System with `Assets/InputSystem_Actions.inputactions`.
+- Scene of interest: `Assets/Scenes/Level1.unity`.
+
+## Input/Controllers
+- Player controllers are `PlayerPlatformerController` and `PlayerPickupController`.
+- Each controller instantiates its own `InputActionAsset` and can filter to a specific device.
+- Device filtering is based on:
+  - `controlSchemeName == "Gamepad"` and/or
+  - `gamepadIndex >= 0`.
+- When no matching gamepad is available, controllers ignore input until the device appears.
+- Gamepad index inference:
+  - `actionMapName = Player` -> index 0
+  - `actionMapName = Player2/Player3/...` -> index (N-1)
+- If you add/rename action maps, update inference or set `gamepadIndex` explicitly.
+
+## Level1 Scene Notes
+- Player 2/3/4 are placed directly in the scene and set to Gamepad.
+- Current expected indices:
+  - Player2 -> `gamepadIndex: 0`
+  - Player3 -> `gamepadIndex: 1`
+  - Player4 -> `gamepadIndex: 2`
+- If you want a 4th controller player, set `gamepadIndex: 3` and ensure `controlSchemeName: Gamepad`.
+
+## Prefabs
+- `Assets/Prefabs/Player.prefab` defaults to `controlSchemeName: Keyboard&Mouse` and `gamepadIndex: -1`.
+- If you instantiate players at runtime, set `gamepadIndex` and `controlSchemeName` per player.
+
+## Editing Tips
+- Use `rg` for searches (`rg -n "term" Assets`).
+- Prefer `apply_patch` for small edits.
+- Avoid touching `Library/`, `Temp/`, and `Logs/`.