I was writing a script for “Object2Terrain” in Unity, but I am having trouble because the following message appears and this program is not added to the menu item … The program was written in Visual studio 2019.
After creating the program below, I first got an error message like this:
“No MonoBehaviour scripts in the file, or their names do not match fale name.”
Applicable source code:
using UnityEngine;
using UnityEditor;
using System.Collections;
public class Object2Terrain : EditorWindow {
[MenuItem("Terrain/Object2Terrain", false, 2000)]
static void OpenWindow() => EditorWindow.GetWindow(typeof(Object2Terrain))(true);
private int resolution = 512;
private Vector3 addTerrain;
int bottomTopRadioSelected = 0;
static string[] bottomTopRadio = new string[] ("Bottom Up", "Top Down");
private float shiftHeight = 0f;
void OnGUI () {
resolution = EditorGUILayout.IntField("Resolution", resolution);
addTerrain = EditorGUILayout.Vector3Field("Add terrain", addTerrain);
shiftHeight = EditorGUILayout.Slider("Shift height", shiftHeight, -1f, 1f);
bottomTopRadioSelected = GUILayout.SelectionGrid(bottomTopRadioSelected, bottomTopRadio, bottomTopRadio.Length, EditorStyles.radioButton);
if(GUILayout.Button("Create Terrain")){
if(Selection.activeGameObject == null){
EditorUtility.DisplayDialog("No object selected", "Please select an object.", "Ok");
return;
}
else{
CreateTerrain();
}
}
}
delegate void CleanUp();
void CreateTerrain(){
//Fire up the progress bar
ShowProgressBar(1, 100);
TerrainData terrain = new TerrainData();
terrain.heightmapResolution = resolution;
GameObject terrainObject = Terrain.CreateTerrainGameObject(terrain);
Undo.RegisterCreatedObjectUndo(terrainObject, "Object2Terrain");
MeshCollider collider = Selection.activeGameObject.GetComponent<MeshCollider>();
CleanUp cleanUp = null;
//Add a collider to our source object if it does not exist.
//Otherwise raycasting doesn't work.
if(!collider){
collider = Selection.activeGameObject.AddComponent<MeshCollider>();
cleanUp = () => DestroyImmediate(collider);
}
Bounds bounds = collider.bounds;
float sizeFactor = collider.bounds.size.y / (collider.bounds.size.y + addTerrain.y);
terrain.size = collider.bounds.size + addTerrain;
bounds.size = new Vector3(terrain.size.x, collider.bounds.size.y, terrain.size.z);
// Do raycasting samples over the object to see what terrain heights should be
float[,] heights = new float[terrain.heightmapWidth, terrain.heightmapHeight];
Ray ray = new Ray(new Vector3(bounds.min.x, bounds.max.y + bounds.size.y, bounds.min.z), -Vector3.up);
RaycastHit hit = new RaycastHit();
float meshHeightInverse = 1 / bounds.size.y;
Vector3 rayOrigin = ray.origin;
int maxHeight = heights.GetLength(0);
int maxLength = heights.GetLength(1);
Vector2 stepXZ = new Vector2(bounds.size.x / maxLength, bounds.size.z / maxHeight);
for(int zCount = 0; zCount < maxHeight; zCount++){
ShowProgressBar(zCount, maxHeight);
for(int xCount = 0; xCount < maxLength; xCount++){
float height = 0.0f;
if(collider.Raycast(ray, out hit, bounds.size.y * 3)){
height = (hit.point.y - bounds.min.y) * meshHeightInverse;
height += shiftHeight;
//bottom up
if(bottomTopRadioSelected == 0){
height *= sizeFactor;
}
//clamp
if(height < 0){
height = 0;
}
}
heights[zCount, xCount] = height;
rayOrigin.x += stepXZ[0];
ray.origin = rayOrigin;
}
rayOrigin.z += stepXZ[1];
rayOrigin.x = bounds.min.x;
ray.origin = rayOrigin;
}
terrain.SetHeights(0, 0, heights);
EditorUtility.ClearProgressBar();
if(cleanUp != null){
cleanUp();
}
}
void ShowProgressBar(float progress, float maxProgress){
float p = progress / maxProgress;
EditorUtility.DisplayProgressBar("Creating Terrain...", Mathf.RoundToInt(p * 100f)+ " %", p);
}
Prior to this issue, I received the error message “No MonoBehaviour scripts in the file, or their names do not match fale name.” I tried to correct the class name, check for uppercase and lowercase letters, and add “usingSystem.Collection;”. When I added “using System.Collection;”, the error message “No MonoBehaviour scripts in the file, or their names do not match fale name.” Disappeared.
However, this time, the error “Unexpected character” came out. I fixed it many times but it didn’t fix.
How can I get rid of this error message? I don’t know what is wrong, so please let me know.