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| using System.Collections;
using System.Collections.Generic;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endif
[ExecuteInEditMode]
public class CellularAutomataCave : MonoBehaviour
{
public enum NeighbourType
{
Live,
Dead,
Keep
}
public int width = 128;
public int height = 128;
[Range(0, 100)] public int fillPercent = 50;
[Range(0, 100)] public int seed = 0;
[Range(0, 10)] public int smoothIteration = 1;
public bool solidBoard = true;
public bool smooth = false;
[Label("邻居为4时")] public NeighbourType neighbourType = NeighbourType.Keep;
private int[,] m_map;
void OnEnable()
{
GenerateMap();
}
public void GenerateMap()
{
FillRandomMap();
if (smooth)
{
for (int i = 0; i < smoothIteration; i++)
{
SmoothMap();
}
}
}
void FillRandomMap()
{
m_map = new int[width, height];
var rnd = new System.Random(seed);
for (int x = 0; x < width; ++x)
{
for (int y = 0; y < height; ++y)
{
bool board = (x == 0 || x == width - 1 || y == 0 || y == height - 1);
if (solidBoard && board)
{
m_map[x, y] = 1;
}
else
{
m_map[x, y] = (rnd.Next(0, 100) < fillPercent) ? 1 : 0;
}
}
}
}
int GetNeighbourCount(int idx, int idy)
{
int count = 0;
for (int x = idx - 1; x <= idx + 1; x++)
{
for (int y = idy - 1; y <= idy + 1; y++)
{
if (x >= 0 && y >= 0 && x < width && y < height)
{
if (x != idx || y != idy)
{
count += m_map[x, y];
}
}
else
{
count++;
}
}
}
return count;
}
void SmoothMap()
{
int[,] nextMap = new int[width, height];
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int count = GetNeighbourCount(x, y);
if (count > 4)
nextMap[x, y] = 1;
else if (count == 4)
{
switch (neighbourType)
{
case NeighbourType.Live:
nextMap[x, y] = 1;
break;
case NeighbourType.Dead:
nextMap[x, y] = 0;
break;
case NeighbourType.Keep:
nextMap[x, y] = m_map[x, y];
break;
}
}
else
nextMap[x, y] = 0;
}
}
m_map = nextMap;
}
void OnDrawGizmos()
{
for (int x = 0; x < width; ++x)
{
for (int y = 0; y < height; ++y)
{
Gizmos.color = (m_map[x, y] == 0) ? Color.black : Color.white;
Vector3 pos = new Vector3(x + 0.5f - width / 2.0f, 0, y + 0.5f - height / 2.0f);
Gizmos.DrawCube(pos, Vector3.one);
}
}
}
#if UNITY_EDITOR
[CustomEditor(typeof(CellularAutomataCave))]
public class CellularAutomataCaveEditor : Editor
{
public override void OnInspectorGUI()
{
var cellularAutomataCave = target as CellularAutomataCave;
if (!cellularAutomataCave) return;
if (DrawDefaultInspector())
{
cellularAutomataCave.GenerateMap();
}
if (GUILayout.Button("Update", GUILayout.MaxWidth(100)))
{
cellularAutomataCave.GenerateMap();
}
}
}
#endif
}
|
