Question I need help with a tower defense game.

I am making a toweled defense game and I made it so when you press space a tower appears but I want to make it so if you place a tower on a path I makes a land mine. paths are tiles using the tile mapping feature

here is my code for spawning towers:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class zFix : MonoBehaviour
6. {
7.     private Rigidbody rb;
8.     // Start is called before the first frame update
9.     void Start()
10.     {
11.         rb = GetComponent<Rigidbody>();
12.     }
13.  
14.     // Update is called once per frame
15.     void Update()
16.     {
17.         rb.position = new Vector3(transform.position.x,transform.position.y,-1);
18.     }
19. }

 

You must have pasted the wrong thing, that code is only brutally setting the rigidbody position every frame.

 

yup sorry here's the real code

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5.  
6. public class spawner : MonoBehaviour
7. {
8.     float countdown;
9.     float levelnum;
10.    public GameObject Prefab;
11.  
12.     // Update is called once per frame
13.     void Start()
14.     {
15.        
16.         levelnum = 1;
17.     }
18.    
19.     void SpawnObject()
20.     {
21.         Instantiate(Prefab,transform.position,Quaternion.identity);
22.     }
23.     public void start_level()
24.     {   if(countdown<levelnum)
25.         {
26.             Instantiate(Prefab,transform.position,Quaternion.identity);
27.            
28.             countdown ++;
29.         }
30.         else
31.         {
32.             levelnum = levelnum + 1;
33.             countdown = 0;
34.         }
35.     }

 

Classes, which are Components, along with method/function calls should all start with capital letters. Any made variable or declaration should start with lower case letters. That way just looking at it, you, or anyone else can easily see what's what.

Code (CSharp):

1. public class Spawner : MonoBehaviour
2. {
3.     float countdown;
4.     float levelnum = 1;
5.     public GameObject myPrefab;
6.    
7.     void SpawnObject()
8.     {
9.         Instantiate(myPrefab, transform.position, Quaternion.identity);
10.     }
11.    
12.     public void Start_Level()
13.     {  
14.         if (countdown < levelnum)
15.         {
16.             SpawnObject();
17.             countdown++;
18.         }
19.         else
20.         {
21.             levelnum++;
22.             countdown = 0;
23.         }
24.     }
25. }

Ok, now that it's readable, I'm not exactly sure what's going on here. So I assume another manager class is calling this classes "Start_Level()" every frame? If this class is just one spawner, and you're not too worried about severe micro-performance, this class should have no problems running it's own Update() method. Unless you have checks on the manager class, that control spawning at different intervals, then I see, all good.

But your question originally was:

This would all have to do with your raycast method, and determining layer group to if on path or not, and then from that check only call the land mine Instantiate instead of a normal tower Instantiate.

 

um I don't have a clue how to do ray-cast

 

and I'm still working on the start level thing

 

Ohh ok, so you just started playing with code, you're much better off doing some tutorials(code for code), and get some working examples you can always pull and mix code from later. Tutorials normally give you all the info you need, start to finish.

 

I suggest "Code Monkey" from YouTube, he's very good at what he does, and he has a lot of tower defense examples.