Added Health bar + landing on player will remove heart

playable/Assets/Heart 1.prefab.meta

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playable/Assets/Heart.png.meta

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playable/Assets/Heart.prefab.meta

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playable/Assets/Scripts/PlayerControler.cs

@@ -11,7 +11,11 @@ public class PlayerControler : MonoBehaviour {
 
 	public float speed;
 	public Vector2 jumpVector;
+	public int health = 0;
+	private int displayedHealth = 0;
+	private bool updateHealth = false;
 	public GameObject bullet;
+	public GameObject heart;
 	bool canJump = true;
 
 
@@ -24,6 +28,12 @@ public class PlayerControler : MonoBehaviour {
 		animator.SetBool ("Fall", !canJump);
 		applyPlayerDirection (Input.GetAxisRaw ("Horizontal_P1"));
 
+		if (displayedHealth != health) {
+			updateHealth = true;
+		}
+		if (updateHealth)
+			displayHealth (health);
+
 
 		if (Input.GetKey (KeyCode.UpArrow)){
 			if (canJump == true){
@@ -39,6 +49,20 @@ public class PlayerControler : MonoBehaviour {
 		//}
 	}
 
+	private void displayHealth(int health){
+		GameObject[] hearts = GameObject.FindGameObjectsWithTag("heartUI2");
+		foreach (GameObject desHeart in hearts)
+			GameObject.Destroy (desHeart);
+		
+		for (int i=1; i<= health; i++) {
+			GameObject heartCanister = Instantiate (heart) as GameObject;
+			Vector3 heartPos = new Vector3 (1-(i * 0.033f), 0.95f, 0);
+			heartCanister.transform.position = heartPos;
+		}
+		displayedHealth = health;
+		updateHealth = false;
+	}
+
 	private void applyPlayerDirection(float moveHorizontal)
 	{
 		if (moveHorizontal != 0)
@@ -52,8 +76,16 @@ public class PlayerControler : MonoBehaviour {
 	void OnCollisionEnter2D(Collision2D col){
 		if (col.collider.tag == "ground")
 			canJump = true;
-		else if(col.collider.tag == "Player")
+		else if (col.collider.tag == "Player") {
 			canJump = true;
+			if(transform.position.y>col.transform.position.y){
+				col.gameObject.GetComponent<player2_controls>().health --;
+				//health --;
+				rigidbody2D.velocity = jumpVector;
+				canJump = false;
+			}
+
+		}
 	}
 
 }

playable/Assets/Scripts/player2_controls.cs

@@ -11,7 +11,11 @@ public class player2_controls : MonoBehaviour {
 	
 	public float speed;
 	public Vector2 jumpVector;
+	public int health = 0;
+	private int displayedHealth = 0;
+	private bool updateHealth = false;
 	public GameObject bullet;
+	public GameObject heart;
 	bool canJump = true;
 
 
@@ -24,6 +28,12 @@ public class player2_controls : MonoBehaviour {
 		animator.SetFloat("Velocity",velo.magnitude);
 		animator.SetBool ("Fall", !canJump);
 		applyPlayerDirection (Input.GetAxisRaw ("Horizontal_P2"));
+
+		if (displayedHealth != health) {
+			updateHealth = true;
+		}
+		if (updateHealth)
+			displayHealth (health);
 		
 		if (Input.GetKey (KeyCode.W)){
 			if (canJump == true){
@@ -39,6 +49,19 @@ public class player2_controls : MonoBehaviour {
 		//}
 	}
 
+	private void displayHealth(int health){
+		GameObject[] hearts = GameObject.FindGameObjectsWithTag("heartUI");
+		foreach (GameObject desHeart in hearts)
+			GameObject.Destroy (desHeart);
+
+		for (int i=1; i<= health; i++) {
+			GameObject heartCanister = Instantiate (heart) as GameObject;
+			Vector3 heartPos = new Vector3 ((i * 0.033f), 0.95f, 0);
+			heartCanister.transform.position = heartPos;
+		}
+		displayedHealth = health;
+		updateHealth = false;
+	}
 	//Changes direction of sprite according to key pressed
 	private void applyPlayerDirection(float moveHorizontal)
 	{
@@ -53,8 +76,14 @@ public class player2_controls : MonoBehaviour {
 	void OnCollisionEnter2D(Collision2D col){
 		if (col.collider.tag == "ground")
 			canJump = true;
-		else if(col.collider.tag == "Player")
-			canJump = true;
+		else if (col.collider.tag == "Player") {
+			if(transform.position.y>col.transform.position.y){
+				col.gameObject.GetComponent<PlayerControler>().health --;
+				//health --;
+				rigidbody2D.velocity = jumpVector;
+				canJump = false;
+			}
+		}
 	}