Trigger is not working

Hi
I have problem with triggers and scripting the object, so the animator work as I want it to.
This is the script:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3. using UnityEngine.UI;
4.  
5. public class EnemyHealth : MonoBehaviour {
6.  
7.     public  int startingHealth = 10;
8.     public int currentHealthEnemy;
9.     public Image damageImage;
10.     public AudioClip deathClip;
11.     public float flashSpeed = 5f;
12.     public Color flashColour = new Color(1f, 0f, 0f, 0.1f);
13.     public int scoreValue = 10;
14.  
15.     AnimationClip clip;
16.     Animator anim;
17.     AudioSource enemyAudio;
18.     ParticleSystem hitParticles;
19.     BoxCollider2D boxCollider2D;
20.     public Sword sword;
21.     PolygonCollider2D polygonCollider2D;
22.     GameObject enemy;
23.     bool isDead;
24.     bool damaged;
25.     private Animator animator;
26.  
27.  
28.     void Awake ()
29.     {
30.         //Seeting up the references
31.         enemy = GameObject.FindGameObjectWithTag ("Enemy");
32.         boxCollider2D = GetComponent <BoxCollider2D> ();
33.         currentHealthEnemy = startingHealth;
34.  
35.  
36.         anim = GetComponent <Animator> ();         //można przenieść do start()
37.         enemyAudio = GetComponent <AudioSource> ();
38.         hitParticles = GetComponentInChildren <ParticleSystem>();
39.      
40.      
41.  
42.     }
43.  
44.     void OnTriggerEnter2D(Collider2D other)
45.     {
46.         if(other.name== "sword")
47.         {
48.             polygonCollider2D = sword.GetComponent <PolygonCollider2D>();
49.             damageImage.color = flashColour;
50.             damaged=true;
51.  
52.         }
53.  
54.         else{
55.             return;
56.         }
57.     }
58.  
59.     void Start()
60.     {
61.         //setting up initial health
62.  
63.         Debug.Log(enemy);
64.         Debug.Log(this);
65.         if (boxCollider2D.isTrigger == true){
66.         GameObject go = GameObject.FindWithTag("DamageImage");
67.         damageImage = go.GetComponent<Image>();
68.      
69.         }
70.         else{
71.             return;
72.         }
73.  
74.     }
75.     void Update()
76.     {
77.  
78.  
79.         //if the enemy has just been damaged...
80.         if(damaged)
81.         {
82.             damageImage.color = flashColour;
83.  
84.      
85.         }
86.  
87.         else
88.         {
89.             damageImage.color = Color.Lerp (damageImage.color, Color.clear, flashSpeed * Time.deltaTime);
90.         }
91.  
92.  
93.         damaged = false;
94.  
95.     }
96.  
97.     public void TakeDamage (int amount)
98.     {
99.         damaged = true; //błyskanie
100.         currentHealthEnemy -= amount;
101.  
102.         enemyAudio.Play ();
103.  
104.  
105.         if(currentHealthEnemy <= 0 && isDead)
106.         {
107.             Death ();
108.         }
109.     }
110.  
111.     void Death ()
112.     {
113.         Destroy (enemy.gameObject);
114.         isDead = true;
115.         //boxCollider2D.isTrigger = true;
116.         anim.SetTrigger ("enemyDead");
117.         enemyAudio.clip = deathClip;
118.         enemyAudio.Play ();
119.  
120.  
121.      
122.     }
123.  
124.     public Animator GetAnimator()
125.     {
126.         return animator;
127.     }
128.  
129. }
130.  

As you can see, when the Death() method is being run, it should trigger the "enemyDead" animation, but it didn't.
This is how it looks inside the animator:



The Game Object. Is Active is being active in next frame of animation, so the other sprite is visible.


I bet there is some simple solution for that, but none tutorial helped me with it.

enemyIdle state is running, but when the enemy is killed, the enemyDead state is not triggered.

 

Unfortunately, it makes enemyDead animation start when I'm starting the game. EnemyIdle is starting and is being played just once, and enemyDead animation keeps playing on and on (and is starting when the enemyIdle is starting).

 

1. I don't know why this script is not running Death() method. It just don't work.
2. When I put "anim.SetTrigger ("enemyDead");" into Update() -> if (damaged) { _here_ }, then the animation is running.
3. Method TakeDamage() is working, because I can see that the currentHealth is changing, but

Code (CSharp):

1.     if(currentHealthEnemy <= 0 && isDead)
2.         {
3.             Death ();
4.         }

is not working. I don't know why.
4. Can I make the animation enemyDead play just once, then destroy the object Enemy, but leave some (let's call it EnemyCorpse) sprite on a ground withing animation?

 

if(currentHealthEnemy <= 0 && isDead)

to

if(currentHealthEnemy <= 0 && !isDead)

In start put

isDead = false;

 

4. Ofcourse, you can create a state with the desired corpse 'animation' that loops after leaving enemyDead (so enemyDead should be enemyDying) or you can trigger or time the destruction of the current object and the creation of a new one. There are countless ways to set this up.

 

Thank you for this solution. It works perfectly, but I have further problem.

Everything works fine with object, that I put in the scene myself, but for a prefab the currentHealthEnemy is not shrinking, when collider triggers it (collider from another object triggers it, I checked).

Looks like it shouldn't be public int, only private (because if public, then this variable is the same for every "clone" of a prefab that is spawned?) but I need it to be public, because other scripts are using this variable.

If I am right, is there any way to solve this?