Blocks are all acting correctly, bomb is acting correctly

Assets/Scripts/Blocks.meta

@@ -0,0 +1,10 @@
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+guid: 60b898dd509fa664d986aed43f17b8ba
+folderAsset: yes
+timeCreated: 1524282772
+licenseType: Free
+DefaultImporter:
+  externalObjects: {}
+  userData: 
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Assets/Scripts/Blocks/BlockBush.cs

@@ -0,0 +1,21 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class BlockBush : MonoBehaviour {
+	GameObject burnt;
+
+	void Awake() {
+		burnt = transform.GetChild (0).gameObject;
+	}
+
+	void OnTriggerEnter2D(Collider2D collider) {
+		//TODO: use durability class?
+		FireDamager fire = collider.gameObject.GetComponent<FireDamager> ();
+		if (fire != null) {
+			burnt.SetActive (true);
+			transform.DetachChildren ();
+			Destroy (gameObject);
+		}
+	}
+}

Assets/Scripts/Blocks/BlockBush.cs.meta

@@ -1,6 +1,6 @@
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+timeCreated: 1524282472
 licenseType: Free
 MonoImporter:
   externalObjects: {}

Assets/Scripts/Blocks/BlockIce.cs

@@ -0,0 +1,22 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class BlockIce : MonoBehaviour {
+	public float bombTimer = -1;
+
+	public GameObject bombPrefab;
+
+	void OnTriggerEnter2D(Collider2D collider) {
+		//TODO: use durability class?
+		FireDamager fire = collider.gameObject.GetComponent<FireDamager> ();
+		if (fire != null) {
+			if (bombTimer >= 0) {
+				GameObject bomb = Instantiate (bombPrefab);
+				bomb.transform.position = transform.position;
+				bomb.GetComponent<Bomb> ().timer = bombTimer;
+			}
+			Destroy (gameObject);
+		}
+	}
+}

Assets/Scripts/Blocks/BlockIce.cs.meta

@@ -0,0 +1,13 @@
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+timeCreated: 1524283289
+licenseType: Free
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+  defaultReferences: []
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Assets/Scripts/Bomb.cs

@@ -6,11 +6,32 @@ public class Bomb : MonoBehaviour {
 	public float timer;
 
 	GameObject explosion;
+	public GameObject iceBlockPrefab;
 
-	void Awake() {
+	float birthTime;
+
+	void Start() {
 		StartCoroutine (ExplodeAfter (timer));
 
 		explosion = transform.GetChild (0).gameObject;
+
+		birthTime = Time.time;
+	}
+
+	void OnTriggerEnter2D(Collider2D collider) {
+		FireDamager fire = collider.gameObject.GetComponent<FireDamager> ();
+		if (fire != null) {
+			//explode immediately
+			StartCoroutine(ExplodeAfter(0));
+		}
+
+		IceDamager ice = collider.gameObject.GetComponent<IceDamager> ();
+		if (ice != null) {
+			GameObject iceBlock = Instantiate (iceBlockPrefab);
+			iceBlock.transform.position = transform.position;
+			iceBlock.GetComponent<BlockIce> ().bombTimer = timer - (Time.time - birthTime);
+			Destroy (gameObject);
+		}
 	}
 
 	IEnumerator ExplodeAfter(float delay) {

Assets/Scripts/Damagers/DamagerBase.cs

@@ -1,5 +1,16 @@
-using UnityEngine;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
 
 public class DamagerBase : MonoBehaviour {
 	public int value = 1;
+
+	void Awake() {
+		StartCoroutine (DestroySelfAfter (30));
+	}
+
+	IEnumerator DestroySelfAfter(float delay) {
+		yield return new WaitForSeconds (delay);
+		Destroy (gameObject);
+	}
 }

Assets/Scripts/Damagers/IceDamager.cs

@@ -1,12 +0,0 @@
-using System.Collections;
-using System.Collections.Generic;
-using UnityEngine;
-
-//shootable
-public class IceDamager : DamagerBase {
-	void OnTriggerEnter2D(Collider2D collider) {
-		if (collider.gameObject.GetComponent<IceDamager> () == null) { //pass through other instances of self
-			Destroy (gameObject);
-		}
-	}
-}

Assets/Scripts/Player.cs

@@ -4,7 +4,8 @@ using UnityEngine;
 
 public class Player : MonoBehaviour {
 	public enum Mode {
-		FIRE, ICE, WIND
+		FIRE, ICE, WIND,
+		LAST
 	};
 
 	Animator animator;
@@ -55,6 +56,9 @@ public class Player : MonoBehaviour {
 
 		if (Input.GetButtonDown("Switch")) {
 			mode += 1;
+			if (mode == Mode.LAST) {
+				mode = 0;
+			}
 		}
 	}