#include "DxLib.h"
#define height 70
#define width 80

int red = GetColor(200, 0, 0);
int green = GetColor(0, 200, 0);
int blue = GetColor(0, 0, 200);

void random_set(int **map){
  for (int i = 0; i < width; i++){
    for (int j = 0; j < height; j++){
      map[i][j] = (int)((double)rand() / RAND_MAX+0.5);
    }
  }
}

void write(int **map){
  for (int i = 0; i < width; i++){
    for (int j = 0; j < height; j++){
      if (map[i][j]){
        DrawFormatString(i * 10, j * 10, green, "*");
      }
    }
  }
}

void copy_map(int** map, int** temp_map){
  for (int i = 0; i < width; i++){
    for (int j = 0; j < height; j++){
      temp_map[i][j] = map[i][j];
    }
  }
}

void update(int** map, int** temp_map){
  int count;
  for (int i = 0; i < width; i++){
    for (int j = 0; j < height; j++){

      //生きているセルの個数を数える
      count = 0;

      //周りの8セルのチェック
      if (i != 0){ count += map[i - 1][j]; }
      if (i != 0 && j != height - 1){  count += map[i - 1][j + 1]; }
      if (j != height - 1){ count += map[i][j + 1]; }
      if (i != width - 1 && j != height - 1){  count += map[i + 1][j + 1]; }
      if (i != width - 1){ count += map[i + 1][j]; }
      if (i != width - 1 && j != 0){ count += map[i + 1][j - 1]; }
      if (j != 0){ count += map[i][j - 1]; }
      if (i != 0 && j != 0){ count += map[i - 1][j - 1]; }

      if ((map[i][j] && (count == 2 || count == 3)) || (!map[i][j] && count == 3)){
        temp_map[i][j] = 1;
      }
      else{
        temp_map[i][j] = 0;
      }
    }
  }
  //更新したtemp_mapをmapにコピー
  copy_map(temp_map, map);
}

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int){

  //前処理
  ChangeWindowMode(true);
  SetAlwaysRunFlag(true);
  DxLib_Init();
  SetGraphMode(1000, 700, 8);
  SetDrawScreen(DX_SCREEN_BACK);

  //mapの宣言
  int **map=new int*[width];
  int **temp_map = new int*[width];
  for (int i = 0; i < width; i++){
    map[i] = new int[height];
    temp_map[i] = new int[height];
  }

  //第1世代をランダムにセット
  random_set(map);

  //世代用の変数
  int generation = 1;

  while (true){
    //画面をクリアする
    ClearDrawScreen();

    //世代を表示
    DrawFormatString(810, 50, red, "世代:%d", generation);

    //map表示
    write(map);

    //次の世代を計算
    update(map, temp_map);

    //0.1秒待って画面反転 世代を1進める
    WaitTimer(100);
    generation++;
    ScreenFlip();
  }
  //終了処理
  DxLib_End();
  return 0;
}