JS too C# conversion

Hello,

I tried to convert this script to c# but I am finding errors can someone help?

Code (JavaScript):

1. // Blend the two terrain textures according to the steepness of
2.     // the slope at each point.
3.     function Start () {
4.         var map: float[,,] = new float[t.terrainData.alphamapWidth, t.terrainData.alphamapHeight, 2];
5.        
6.         // For each point on the alphamap...
7.         for (var y = 0; y < t.terrainData.alphamapHeight; y++) {
8.             for (var x = 0; x < t.terrainData.alphamapWidth; x++) {
9.                 // Get the normalized terrain coordinate that
10.                 // corresponds to the the point.
11.                 var normX = x * 1.0 / (t.terrainData.alphamapWidth - 1);
12.                 var normY = y * 1.0 / (t.terrainData.alphamapHeight - 1);
13.                
14.                 // Get the steepness value at the normalized coordinate.
15.                 var angle = t.terrainData.GetSteepness(normX, normY);
16.                
17.                 // Steepness is given as an angle, 0..90 degrees. Divide
18.                 // by 90 to get an alpha blending value in the range 0..1.
19.                 var frac = angle / 90.0;
20.                 map[x, y, 0] = frac;
21.                 map[x, y, 1] = 1 - frac;
22.             }
23.         }
24.        
25.         t.terrainData.SetAlphamaps(0, 0, map);
26.     }

My attempt..... and this is errors: Cannot implicitly convert type `float' to `int'. On lines (28,37) (28,40) (29,37) (29,40)

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class Test : MonoBehaviour {
5.  
6.     private TerrainData terrainData;
7.     private Terrain t;
8.  
9.     // Blend the two terrain textures according to the steepness of
10.     // the slope at each point.
11.     void Start () {
12.         float[,,] map = new float[t.terrainData.alphamapWidth, t.terrainData.alphamapHeight, 2];
13.        
14.         // For each point on the alphamap...
15.         for (float y = 0; y < t.terrainData.alphamapHeight; y++) {
16.             for (float x = 0; x < t.terrainData.alphamapWidth; x++) {
17.                 // Get the normalized terrain coordinate that
18.                 // corresponds to the the point.
19.                 float normX = x * 1.0f / (t.terrainData.alphamapWidth - 1);
20.                 float normY = y * 1.0f / (t.terrainData.alphamapHeight - 1);
21.                
22.                 // Get the steepness value at the normalized coordinate.
23.                 float angle = t.terrainData.GetSteepness(normX, normY);
24.                
25.                 // Steepness is given as an angle, 0..90 degrees. Divide
26.                 // by 90 to get an alpha blending value in the range 0..1.
27.                 float frac = angle / 90.0f;
28.                 map[x, y, 0] = frac;
29.                 map[x, y, 1] = 1 - frac;
30.             }
31.         }
32.        
33.         t.terrainData.SetAlphamaps(0, 0, map);
34.     }
35. }

Any help would be appreciated, thanks.

 

Take a look at line 28:

Code (csharp):

1. map[x, y, 0]= frac;

x and y are currently defined as floats, yet the array indexor requires an int. Converting between float and int isn't trivial and can lead to loss of accuracy and precision so C# does not implicitly do it for you.

After a quick look at your code I think the best solution would be to make x and y int's not floats.

 

Fixed it, thank you!