Grid

Assets/Scripts/Grid.meta

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Assets/Scripts/Grid/Grid.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Grid
+{
+    int width, height;
+    float cellSize;
+    Vector3 originPosition;
+    int[,] gridArray;
+
+    public Grid(int _width, int _height, float _cellSize, Vector3 _originPosition)
+    {
+        width = _width;
+        height = _height;
+        cellSize = _cellSize;
+        originPosition = _originPosition;        
+
+        gridArray = new int[width, height];
+
+        for(int x = 0; x < gridArray.GetLength(0); x++)
+        {
+            for (int y = 0; y < gridArray.GetLength(1); y++)
+            {
+                Debug.DrawLine(GetWorldPosition(x, y), GetWorldPosition(x, y+1), Color.white, 100f);
+                Debug.DrawLine(GetWorldPosition(x, y), GetWorldPosition(x+1,y), Color.white, 100f);
+            }
+        }
+        Debug.DrawLine(GetWorldPosition(0, height), GetWorldPosition(width, height), Color.white, 100f);
+        Debug.DrawLine(GetWorldPosition(width, 0), GetWorldPosition(width, height), Color.white, 100f);
+    }
+
+    Vector3 GetWorldPosition(int x, int y)
+    {
+        return new Vector3(x, y) * cellSize + originPosition;
+    }
+
+    void GetXY(Vector3 worldPosition, out int x, out int y)
+    {
+        x = Mathf.FloorToInt((worldPosition - originPosition).x / cellSize);
+        y = Mathf.FloorToInt((worldPosition - originPosition).y / cellSize);
+    }
+
+    public void SetValue(int x, int y, int value)
+    {
+        if(x >= 0 && y >= 0 && x < width && y < height)
+        {
+            gridArray[x, y] = value;
+            Debug.Log(x.ToString() + " " + y.ToString() + " -> " + value.ToString());
+        }
+    }
+
+    public void SetValue(Vector3 worldPosition, int value)
+    {
+        int x, y;
+        GetXY(worldPosition, out x, out y);
+        SetValue(x, y, value);
+    }
+
+    public int GetValue(int x, int y)
+    {
+        if (x >= 0 && y >= 0 && x < width && y < height)
+        {
+            return gridArray[x, y];
+        }
+        else
+        {
+            return 0;
+        }
+    }
+
+    public int GetValue(Vector3 worldPosition)
+    {
+        int x, y;
+        GetXY(worldPosition, out x, out y);
+        return GetValue(x, y);
+    }
+}

Assets/Scripts/Grid/Grid.cs.meta

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Assets/Scripts/Grid/TestGrid.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class TestGrid : MonoBehaviour
+{
+    Grid grid;
+    void Start()
+    {
+        grid = new Grid(100, 100, 1, new Vector3(0, 0));
+    }
+
+    void Update()
+    {
+        if (Input.GetMouseButtonDown(0))
+        {
+            grid.SetValue(Camera.main.ScreenToWorldPoint(Input.mousePosition), 44);
+        }
+
+        if (Input.GetMouseButtonDown(1))
+        {
+            Debug.Log(grid.GetValue(Camera.main.ScreenToWorldPoint(Input.mousePosition)));
+        }
+    }
+}

Assets/Scripts/Grid/TestGrid.cs.meta

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