Enemies and Units trading damage

Hi,

I currently have setup two units. A human unit who moves up and an enemy that moves sideways.

They both have different ranges and the human unit has a higher range and stops on contact. The enemy moves so it is in line but wont do damage as its out of range.

Each unit has its own stats, hp, dmg, attackspeed etc.
coll.collider2D.gameObject.tag returns the enemies tag.

How do I go about dealing damage to the enemy?
Do I need to attach a takedamage and dodamage script to each game object?

So " void OnTriggerEnter2D (Collider2D coll) " do damage*attackspeed to the enemy units current health.
I'm unsure how to access the enemies health.
The game objects have unitHealth attached to them which handles their current health.

Would I do something like this?

Code (csharp):

1.  
2. void OnTriggerEnter2D (Collider2D coll){
3. enemy = coll.collider2D.gameObject.tag;
4. unitHealth = enemy.GetComponent<unitHealth>();
5. unitHealth.takeDamage(damage, attackSpeed);
6. }

Then in unitHealth script takeDamage to remove the hp?

 

There is only one problem I can see. The UnitHealth component
will remain the same for all types of units.

So you could either pass the type of unit to takeDamage and based on that cause
the damage or else you could make an IHealth Interface and
just implement that interface wherever you have to cause damage.

Unity's scripting tutorial on Interface exactly explains such a health/damage
system.

 

Code (csharp):

1.  
2. using UnityEngine;
3.  
4. private class HumanHealth : MonoBehaviour
5. {
6.      pubic float health;   //set this in the inspector
7.      public float damage;  //set this in the inspector
8.      public float attackSpeed;  //set this in the inspector
9.  
10.      void OnTriggerEnter2D(Collider col)
11.      {
12.             GameObject enemy = col.gameObject;
13.             EnemyHealth enemyHealth = enemy.GetComponent<EnemyHealth>();
14.             enemyHealth.TakeDamage(damage, attackSpeed); //damage the enemy
15.             health -= enemyHealth.damage; //damage the player
16.       }
17. }

this would go on the human unit for example;

 

So doing it by tag will cause damage to all units with the same tag if collided with?
I didn't quite understand how to implement an interface properly from the unity tutorial.

Vintar, I will try your suggestion this morning

 

I have it working. Issue is now the attackSpeed. It ramps up the " damageToUnit " really quickly. It gets to 200 in about 2 seconds doing 5 damage a tick.

When the unit hits the enemy it does this.

Code (csharp):

1.  
2. GameObject enemy = coll.gameObject;
3. doDamage enemyScript = enemy.GetComponentInParent<doDamage>();
4. enemyScript.damageUnit(damage, attackSpeed); //damage the enemy
5.  

Then attached to the enemy.

Code (csharp):

1.  
2. public void damageUnit(int damage, float attackSpeed)
3.     {
4.         attackSpeed = attackSpeed;
5.         damage = damage;
6.         inRange = true;
7.         if (health > damageToUnit) {
8.             currentHealth = health - damageToUnit;
9.         } else {
10.             currentHealth = health;
11.         }
12.  
13.     }
14.  
15. void Update () {
16.         timer += Time.deltaTime;
17.         if (timer >= attackSpeed && inRange && currentHealth > 0)
18.         {
19.            
20.                 if (timer >= attackSpeed) {
21.                     // Reset the timer.
22.                     timer = 0f;
23.                     if(currentHealth > damageToUnit)
24.                     {
25.                         // ... damage the enemy.
26.                         damageToUnit += damage;
27.                     }
28.                 }
29.            
30.                 // If the unit has zero or less health...
31.                 if (damageToUnit >= currentHealth) {
32.  
33.                     Debug.Log("dead");
34.                 }
35.        
36.         }
37.  
38.     }

It's not passing across damage and attackSpeed from void damageUnit

 

Solved by setting the variable within the enemy instead of running the function within the enemy.

Code (csharp):

1.  
2. GameObject enemy = coll.gameObject;
3.             doDamage enemyCombat = enemy.GetComponentInParent<doDamage>();
4.             enemyCombat.damage = damage;
5.             enemyCombat.attackSpeed = attackSpeed;
6.