using UnityEngine; [RequireComponent(typeof(Animator))] [RequireComponent(typeof(SpriteRenderer))] // Or SkinnedMeshRenderer if 3D public class TrollController : MonoBehaviour { [Header("Movement")] [SerializeField] private float moveSpeed = 2f; [Header("Animation")] [SerializeField] private string speedParameter = "Speed"; // Name of the float parameter in the Animator private Animator animator; private SpriteRenderer spriteRenderer; // Or SkinnedMeshRenderer private float horizontalInput; private void Awake() { animator = GetComponent(); spriteRenderer = GetComponent(); // Or GetComponent(); if (animator == null) { Debug.LogError("Animator component not found on this GameObject.", this); } if (spriteRenderer == null) { // Add fallback or alternative for 3D if needed Debug.LogError("SpriteRenderer component not found on this GameObject.", this); } } private void Update() { // --- Input --- // Replace with your preferred input system if needed horizontalInput = Input.GetAxisRaw("Horizontal"); // --- Animation --- UpdateAnimation(); // --- Movement --- Move(); // --- Flipping --- FlipSprite(); } private void UpdateAnimation() { if (animator != null) { // Set the speed parameter based on horizontal movement float currentSpeed = Mathf.Abs(horizontalInput); animator.SetFloat(speedParameter, currentSpeed); } } private void Move() { // Simple horizontal movement Vector3 movement = new Vector3(horizontalInput, 0f, 0f); transform.position += movement * moveSpeed * Time.deltaTime; } private void FlipSprite() { if (spriteRenderer != null && horizontalInput != 0) { // Flip the sprite based on movement direction spriteRenderer.flipX = horizontalInput < 0; // For 3D models, you might rotate the transform instead: // transform.rotation = Quaternion.Euler(0f, horizontalInput < 0 ? 180f : 0f, 0f); } } } Setup Instructions for Troll Walking Animation: 1. **Attach Script:** Attach the `TrollController.cs` script to your Troll GameObject. 2. **Animator Component:** Ensure your Troll GameObject has an `Animator` component. 3. **Animator Controller:** * Create an Animator Controller asset (Right-click in Project window -> Create -> Animator Controller). * Assign this controller to the `Controller` field of the `Animator` component on your Troll. * Open the Animator window (Window -> Animation -> Animator). 4. **Animation States:** * Drag your Troll's Idle and Walking animation clips into the Animator window to create states. * Set the Idle state as the default state (Right-click -> Set as Layer Default State). 5. **Parameter:** * In the Animator window, go to the 'Parameters' tab. * Click the '+' button and add a `Float` parameter. * Name it exactly `Speed` (or change the `speedParameter` variable in the `TrollController` script if you use a different name). 6. **Transitions:** * Create a transition from Idle to Walking: Right-click Idle state -> Make Transition -> Click Walking state. * Select the transition arrow. In the Inspector: * Uncheck 'Has Exit Time'. * Add a Condition: `Speed` | `Greater` | `0.01`. * Create a transition from Walking to Idle: Right-click Walking state -> Make Transition -> Click Idle state. * Select the transition arrow. In the Inspector: * Uncheck 'Has Exit Time'. * Add a Condition: `Speed` | `Less` | `0.01`. 7. **Assign Components:** Ensure the `TrollController` script has references to the `Animator` and `SpriteRenderer` (or `SkinnedMeshRenderer` for 3D). The script attempts to get them automatically in `Awake`. 8. **Input:** The script uses the default Unity Input Manager ("Horizontal" axis). Make sure this is configured (Edit -> Project Settings -> Input Manager) or adapt the script to your input system. 9. **Run:** Play the scene and use the horizontal input keys (A/D or Left/Right arrows by default) to move the troll and trigger the walking animation.