- [誕生] 死んでいるセルに隣接する生きたセルがちょうど3つあれば，次の世代が誕生
- [生存] 生きているセルに隣接する生きたセルが2つか3つならば，次の世代でも生存
- [過疎] 生きているセルに隣接する生きたセルが1つ以下ならば，過疎により死滅
- [過密] 生きているセルに隣接する生きたセルが4つ以上ならば，過密により死滅
コード
using UnityEngine;
using System.Collections;
public class LifeGameController : MonoBehaviour {
private static int MAX_WIDTH;
private static int MAX_HEIGHT;
private static int SCREEN_WIDTH;
private static int NUM_CELLS;
private static int CELL_SIZE = 3;
private float frequency = 0.05f;
private bool evaluating = false;
private bool[][] pairMap;
private static Color32 alive = Color.yellow;
private static Color32 dead = Color.white;
private Color32[] pixels;
private Texture2D texture;
private static int[] neighbors;
private int turn = 0;
void Start () {
MAX_HEIGHT = Screen.height / CELL_SIZE;
MAX_WIDTH = Screen.width / CELL_SIZE;
SCREEN_WIDTH = MAX_WIDTH * CELL_SIZE;
NUM_CELLS = MAX_WIDTH * MAX_HEIGHT;
neighbors = new int[]{-MAX_WIDTH - 1, -MAX_WIDTH, -MAX_WIDTH + 1, -1, 1, MAX_WIDTH - 1, MAX_WIDTH, MAX_WIDTH + 1};
this.pairMap = new bool[2][];
for (int i = 0; i < this.pairMap.Length; ++i)
this.pairMap[i] = new bool[NUM_CELLS];
for (int i = 0; i < (int)(NUM_CELLS * frequency); ++i)
this.pairMap[0][Random.Range(0, NUM_CELLS)] = true;
this.pixels = new Color32[NUM_CELLS * CELL_SIZE * CELL_SIZE];
this.texture = new Texture2D(MAX_WIDTH * CELL_SIZE, MAX_HEIGHT * CELL_SIZE);
}
void Update () {
if (!evaluating) {
evaluating = true;
StartCoroutine("Simulate");
}
}
int GetNumAlive(int position, ref bool[] map) {
int cnt = 0;
for (int i = 0; i < neighbors.Length; ++i)
if (map[(position + neighbors[i] + NUM_CELLS) % NUM_CELLS])
++cnt;
return cnt;
}
IEnumerator Simulate() {
yield return new WaitForSeconds(0.1f);
this.Evaluate(ref this.pairMap[this.turn % 2], ref this.pairMap[(this.turn + 1) % 2]);
this.Render(ref this.pairMap[this.turn % 2]);
this.evaluating = false;
++this.turn;
yield return null;
}
void Evaluate(ref bool[] curMap, ref bool[] nextMap) {
for (int i = 0; i < NUM_CELLS; ++i) {
int cnt = this.GetNumAlive(i, ref curMap);
nextMap[i] = ((curMap[i] && (cnt == 2)) || (cnt == 3));
}
}
void Render(ref bool[] map) {
for (int x = 0; x < MAX_WIDTH; ++x) {
for (int y = 0; y < MAX_HEIGHT; ++y) {
Color32 deadOrAlive = map[x + MAX_WIDTH * y] ? alive : dead;
for (int dx = 0; dx < CELL_SIZE; ++dx) {
for (int dy = 0; dy < CELL_SIZE; ++dy) {
int pos = (x + y * SCREEN_WIDTH) * CELL_SIZE + (dx + dy * SCREEN_WIDTH);
this.pixels[pos] = deadOrAlive;
}
}
}
}
this.texture.SetPixels32(this.pixels);
this.texture.Apply();
}
void OnGUI() {
GUI.DrawTexture(new Rect(0, 0, this.texture.width, this.texture.height), this.texture);
}
}
