How to Apply Animations to Script

Question

Hey guys so I am currently making a enemy AI for a 2D Platformer. I dont know how I havent been able to find an answer to t$$anonymous$$s cause it seems fairly simple. The enemy sprite hovers back and forth and if the player collides with it, the player respawns at the beginning of the level. The Code works well but the enemy just hovers back and forth. I created two animations, One called "Left" and one called "Right" as you can guess, they are of the enemy walking, facing that direction. Im having trouble incorporating them into my script though.

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class HazardMove : MonoBehaviour{

  private ObjectMove player; //references the "player" for trigger
  public Transform start; //references the location the player will respawn on contact
  public float amounttomovex;
  public float speed;
  private float currentposx;
  private float currentposy;
  private int facing;
  public Animation anim; //for switc$$anonymous$$ng the two animatons
  
 
  void Start()
  {
      player = FindObjectOfType<ObjectMove>();
      currentposx = gameObject.transform.position.x;
      facing = 0;
  }
 
  void Update()
  {
      if (facing == 1 && gameObject.transform.position.x < currentposx - amounttomovex)
      {
          facing = 0;
      }
 
      if (facing == 0 && gameObject.transform.position.x > currentposx)
      {
          facing = 1;
      }
 
      if (facing == 0)
      {
          transform.Translate(Vector2.right * speed * Time.deltaTime);
          anim.CrossFade("Right");
      }
      else if (facing == 1)
      {
          transform.Translate(-Vector2.right * speed * Time.deltaTime);
          anim.CrossFade("Left");
      }
  }

As you can see at the last If and Else If statements, I tried using anim.CrossFade("Left"); and Right. T$$anonymous$$s doesn't seem to do anyt$$anonymous$$ng, the animations don't play at all and the sprite just hovers back and forth. Do I have these animations in the wrong spot or should they be in the code differently? Im sure its somet$$anonymous$$ng in the Transform.Translatet that is interfering but when I take parts of it out, it stops hovering back and forth. Ive been stuck on t$$anonymous$$s for a few days now so if anyone has any tips or knows a better way I should be attacking t$$anonymous$$s from, I greatly appreciate it!

Answer 1

Answer by HenryStrattonFW · Jun 29, 2017 at 09:30 PM

EDIT: So actually on second look at the code, you've got enough to go with already without adding extra flags. since you already have logic that happens only once as the direction switches, t$$anonymous$$s is where you want to change your animation, not every frame like the movement. I've reorganised the code and added some comments, hope t$$anonymous$$s helps.

 private ObjectMove player; //references the "player" for trigger
 public Transform start; //references the location the player will respawn on contact
 public float amounttomovex;
 public float speed;
 private float currentposx;
 private float currentposy;
 private int facing;
 public Animation anim; //for switc$$anonymous$$ng the two animatons
 
 
 void Start()
 {
     player = FindObjectOfType<ObjectMove>();
     currentposx = gameObject.transform.position.x;
 }
 
 void Update()
 {
     //Detect the moment of needing to change direction towards the right.
     if (facing == 1 && gameObject.transform.position.x < currentposx - amounttomovex)
     {
         facing = 0;
         anim.CrossFade("Right");
     }
 
     //Detect the moment of needing to change direction towards the left.
     if (facing == 0 && gameObject.transform.position.x > currentposx)
     {
         facing = 1;
         anim.CrossFade("Left");
     }
 
     // Then process the actual movement.
     if (facing == 0)
     {
         transform.Translate(Vector2.right * speed * Time.deltaTime);
     }
     else if (facing == 1)
     {
         transform.Translate(-Vector2.right * speed * Time.deltaTime);
     }
 }

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andrewwebber25 · Jul 03, 2017 at 06:19 PM 0

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@HenryStrattonFW Thanks for the input but how exactly would I I put this into code? I tried setting "anim" in my inspector to "Left" but any animation I try to drag a drop into it in inspector gets an X over it and doesn't stay. Im sorry that im really new to Unity and app development but if you could help me out a bit more I would really appreciate it!

HenryStrattonFW andrewwebber25 · Jul 06, 2017 at 10:29 PM 0

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Updated with a more useful answer and code sample.

How to Apply Animations to Script

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