Hereunder is he health bar code I have for my units (a green bar floating above the units - RTS style). The problem is that the bar does not stick to the unit (or move together with it). In the second i move the camera the health bar moves in that direction.
Can you please help ?
using UnityEngine;
using System.Collections;
public class AIHealth : MonoBehaviour {
public int maxHp;
public int currentHp;
public Camera mainCamera;
public Texture2D hpBarBG;
public Texture2D hpBarCurrent;
public Transform target;
private float offsetY;
//script will be atached to each GameObject that can suffer dmg.
void Start () {
//put it on top of the character
offsetY=gameObject.collider.bounds.size.y-2;
Debug.Log(offsetY);
}
void Update () {
health h=(health)GetComponent("health");
h.currenthealth = currentHp;
h.maxhealth = maxHp;
var wantedPos = Camera.main.WorldToViewportPoint (target.position);
transform.position = wantedPos;
}
void OnGUI(){
//the hp bar background location on screen
Rect rcBg = new Rect(0,0,60,14);
//the current HP bar
Rect rcCurrent = new Rect(0,0,((currentHp)/maxHp)*56,8);
//the important part : where this object is located in my screen
Vector3 point = mainCamera.WorldToScreenPoint(new Vector3(
transform.position.x,
transform.position.y+offsetY,
transform.position.z)
);
//had to add the substraction since my Y axis were revesed (
rcBg.y = Screen.height-point.y;
//do some ugly hardcoding so the bar is pretty and centered
rcBg.x = point.x-30;
rcCurrent.x=rcBg.x+2;
rcCurrent.y=rcBg.y+3;
GUI.DrawTexture(rcBg,hpBarBG);
GUI.DrawTexture(rcCurrent,hpBarCurrent);
}
}
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