Placing buildings

I would like to have a script, where if you have a certain amount of logs and stones, you can create a campfire. I want a raycast from the middle of the screen to hit a colldier, and instantate a prefab. I then want this prefab to follow the raycast's position, but all my efforts so far have failed. I will post the code for both of these scripts, the GUI and the handler.
Builder_GUI.js

Code (JavaScript):

1. #pragma strict
2.  
3. private var WindowLoc : Rect = Rect(Screen.width/4, Screen.height/4, Screen.width /2, Screen.height /2);
4. private var scrollBarChopGrid : Vector2 = Vector2.zero;
5. private var ShowBuildingMenu : boolean = false;
6. private var Building_Handler : Building_Handler;
7.  
8. var ToggleBuild : KeyCode = KeyCode.P;
9.  
10. function Start()
11. {
12.     Building_Handler = GetComponent("Building_Handler");
13. }
14.  
15. function Update()
16. {
17.     if (Input.GetKeyDown(ToggleBuild))
18.         if (ShowBuildingMenu)
19.         {
20.             ShowBuildingMenu = false;
21.            
22.         }
23.         else
24.             ShowBuildingMenu = true;
25. }
26.  
27. function OnGUI () {
28.     if (ShowBuildingMenu)
29.         WindowLoc = GUI.Window(0, WindowLoc, Building_Selection, "");
30. }
31.  
32. function Building_Selection(windowID : int)
33. {
34.     GUI.Label(Rect(5, 0,100,25), "<b>Item to build:</b>");
35.     GUI.Label(Rect(110, 0,200,25), "<b>Resources required:</b>");
36.     scrollBarChopGrid = GUI.BeginScrollView(Rect (0, 25, Screen.width/2,257), scrollBarChopGrid, Rect(0,0,0,500));
37.        
38.         GUI.Label(Rect(5, 0,100,25), "Camp Fire");
39.         GUI.Label(Rect(110,0,200,25), "10xWood, 10xStone");
40.         if (GUI.Button(Rect(315, 0,75,25), "Build"))
41.         {
42.             Building_Handler.Building = true;
43.             Building_Handler.Once = true;
44.             ShowBuildingMenu = false;
45.         }
46.     GUI.EndScrollView();
47. }

Builder_Handler.js

Code (JavaScript):

1. #pragma strict
2.  
3. @HideInInspector
4. var Building : boolean = false;
5. var BuildCampFire : GameObject;
6.  
7. @HideInInspector
8. var Once : boolean = false;
9.  
10. private var hitPointX : int = 0;
11. private var hitPointY : int = 0;
12. private var hitPointZ : int = 0;
13.  
14. function Update () {
15.     if (Building)
16.     {
17.         var ray : Ray = Camera.main.ScreenPointToRay(Vector3(Screen.width*0.5, Screen.height*0.5, 0));
18.         var hit : RaycastHit;
19.         if(Physics.Raycast (ray, hit, 50))
20.         {
21.             var clone : GameObject;
22.             hitPointX = hit.point.x;
23.             hitPointY = hit.point.y;
24.             hitPointZ = hit.point.z;
25.             if (Once)
26.             {  
27.                 clone = Instantiate(BuildCampFire, Vector3(hitPointX,hitPointY + 0.5,hitPointZ), Quaternion.Euler(0,0,0));
28.                 Once = false;
29.             }
30.             clone.position = Vector3(hitPointX,hitPointY,hitPointZ);
31.            
32.             if (Input.GetMouseButtonDown(0))
33.             {
34.                 Building = false;
35.             }
36.         }
37.     }
38. }

 

http://forum.unity3d.com/threads/using-code-tags-properly.143875/

 

Better?

 

Anybody??

 

You have some very glaring errors in your build handler.

• You have Once as a boolean inside that Raycast. Since your other script makes it true automatically. This script will always set the building immediately when you click the GUI button to create a building.
• You should have the Input handle the Instanciation and set the boolean of Building to false.
• No need to create/reference the Clone gameObject until you plan on creating anything.
• Not sure why you created three variables of floats to capture the hitPoint[axis]. If you really want to make it nicer just declare a new Vector3(0, 0.5f, 0) and add it to your result. This is the exact thing your already doing.

Code (JavaScript):

1.  
2. #pragma strict
3. @HideInInspector
4. var Building : boolean = false;
5. var BuildCampFire : GameObject;
6. var BuildPositionModifier: Vector3 = Vector3(0, 0.5f, 0)
7.  
8. var hit : RaycastHit;
9. var ray : Ray;
10.  
11. function Update ()
12. {
13.     if (Building)
14.     {
15.         ray = Camera.main.ScreenPointToRay(Vector3(Screen.width*0.5, Screen.height*0.5, 0));
16.        
17.         if(Physics.Raycast (ray, hit, 50))
18.         {      
19.             if (Input.GetMouseButtonDown(0))
20.             {
21.                 Instantiate(BuildCampFire, hit.point + BuildPositionModifier, Quaternion.Euler(0,0,0));
22.                 Building = false;
23.             }
24.         }
25.     }
26. }

 

I just make my GUI instantiate a copy of the prefab I want and then attach this script to the prefab...

Code (JavaScript):

1. var isBeingPlaced : boolean = true;
2. private var rayHitInfo : RaycastHit;
3.  
4. function Update(){
5.     if(isBeingPlaced){
6.         if(Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition),rayHitInfo,LayerMask.NameToLayer("Ground"))){
7.             transform.position = rayHitInfo.point;
8.         }
9.         if(Input.GetButtonDown("Fire1")){
10.             Placed();
11.         }
12.         if(Input.GetButtonDown("Fire2")){
13.             Destroy(this.gameObject);
14.         }
15.     }
16. }
17.  
18. function Placed(){
19.     isBeingPlaced = false;
20.    
21. }

This is in JS but the conversion to C# is stupid simple.

 

is there a question in there somewhere?

 

No, was given him my code that does what he wants much easier. Why would I need to ask anything lol.

 

ah well miss read it somehow, sorry.

 

Notta problem. OP did it get ya where ya needed to be?

 

You all helped me to get a good result. If you want to see it in action, there is a windows standalone which you can view it in action. Use wasd to move around and E to pickup. To view the crafting menu, hit p. Thanks guys for all your help!!

P.S: This is an early build. When you have no more use for it, please feel free to discard!

Link to standalone: https://www.dropbox.com/s/27pn8rfbvrfqaa5/[UNITY 3D] Survival.zip