ライフゲーム - ぼく用あれこれまとめ

//
// ライフゲームのソースコードだよ
//
 
#include <iostream>
#include <string>
 
//
// セルクラス
//
class CellTable
{
public:
	CellTable();
 
	int init();
	int print();
	int set_cell(int tate, int yoko);
	int set_cell_alive_state(int tate, int yoko);
 
 
	int update();
	int update_cell(int x, int y);
 
	int check_cell(int x, int y);
 
	int set_glider();
	int set_penta();
 
private:
	enum ENUM_CELL
	{
		CELL_BUFFER		= 2,
		CELL_X			= 32,
		CELL_Y			= 16,
	};
	bool	cell_array[CELL_X][CELL_Y][CELL_BUFFER];
	int		current_cell;
	int		past_cell;
};
 
 
//
// エントリーポイント
//
int main()
{
	CellTable		cell_table;
	std::string		cell_command = "c";
	std::cout << ".:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*.:*~*:._.:*~*:..:*~*:._.:*~*:. " << std::endl;
	std::cout << ".:･'ﾟ♭:*･♪'ﾟ｡*# ★ Conway's Game of Life ★ :･'ﾟ.'♪*'ﾟ♭.:*･♪ " << std::endl;
	std::cout << ".:*~*:._.:*~*:._.:*~*:._.:*~*:._.:*.:*~*:._.:*~*:..:*~*:._.:*~*:. " << std::endl;
 
	while(cell_command != "exit")
	{
		if(cell_command == "c")
		{
			cell_table.init();
		}
		else if(cell_command == "s")
		{
			int x, y;
			std::cout << "横の番号？> ";
			std::cin >> x;	
			std::cout << "縦の番号？> ";
			std::cin >> y;
			if((x >= 0) && (y >= 0))
			{
				cell_table.set_cell(x, y);
			}
		}
		else if(cell_command == "u")
		{
			cell_table.update();
		}
		else if(cell_command == "g")
		{
			cell_table.set_glider();
		}
		else if(cell_command == "p")
		{
			cell_table.set_penta();
		}
 
		cell_table.print();
		std::cout << std::endl;
		std::cout << "u: セルの更新, s: セルを置く, c: セルのクリア, exit: 終了" << std::endl;
		std::cout << "g: グライダーの設置, p: ペンタデスカトロンの設置" << std::endl;
		std::cout << "コマンドを入力してください> ";
		std::cin >> cell_command;
	}
 
	return 0;
}
 
 
 
CellTable::CellTable()
{
	init();
}
 
 
 
int CellTable::init()
{
	current_cell = 0;
 
	for(int yoko = 0; yoko < CELL_X; ++yoko)
	{
		for(int tate = 0; tate < CELL_Y; ++tate)
		{
			cell_array[yoko][tate][current_cell] = false;
		}
	}
	return 0;
}
 
 
 
int CellTable::print()
{
	for(int tate = -1; tate < CELL_Y; ++tate)
	{
		for(int yoko = -1; yoko < CELL_X; ++yoko)
		{
			if( (yoko == -1) && (tate == -1) )
			{
				std::cout << "  ";
			}
			else if( tate == -1 )
			{
				printf("%2d", yoko);
			}
			else if( yoko == -1 )
			{
				printf("%2d", tate);
			}
			else if( cell_array[yoko][tate][current_cell] == false)
			{
				std::cout << "□";
			}
			else
			{
				std::cout << "■";
			}
		}
		std::cout << "\n";
	}
	return 0;
}
 
 
 
int CellTable::set_cell(int tate, int yoko)
{
	tate = tate % CELL_X * ((tate < 0) ? -1: 1);
	yoko = yoko % CELL_Y * ((yoko < 0) ? -1: 1);
 
	cell_array[tate][yoko][current_cell] = (cell_array[tate][yoko][current_cell] == false) ? true : false;
 
	return 0;
}
 
int CellTable::set_cell_alive_state(int tate, int yoko)
{
	cell_array[tate][yoko][current_cell] = true;
 
	return 0;
}
 
 
int CellTable::update()
{
	past_cell		= current_cell;
	current_cell	= (current_cell + 1) % CELL_BUFFER;
 
	for(int tate = 0; tate < CELL_Y; ++tate)
	{
		for(int yoko = 0; yoko < CELL_X; ++yoko)
		{
			update_cell(yoko, tate);
		}
	}
 
	return 0;
}
 
 
 
int CellTable::update_cell(int x, int y)
{
	int count = check_cell(x, y);
 
	if(cell_array[x][y][past_cell] == false)
	{
		if(count == 3)
		{
			cell_array[x][y][current_cell] = true;
		}
		else
		{
			cell_array[x][y][current_cell] = false;
		}
	}
	else
	{
		if( (count <= 1) || (count >= 4))
		{
			cell_array[x][y][current_cell] = false;
		}
		else
		{
			cell_array[x][y][current_cell] = true;
		}
	}
 
	return 0;
}
 
 
 
int CellTable::check_cell(int x, int y)
{
	int count = 0;
 
	if(cell_array[(x-1 < 0) ? CELL_X-1: x-1][(y-1 < 0) ? CELL_Y-1: y-1][past_cell] == true)
	{
		++count;
	}
	if(cell_array[x][(y-1 < 0) ? CELL_Y-1: y-1][past_cell] == true)
	{
		++count;
	}
	if(cell_array[(x+1 >= CELL_X) ? 0: x+1][(y-1 < 0) ? CELL_Y-1: y-1][past_cell] == true)
	{
		++count;
	}
	if(cell_array[(x-1 < 0) ? CELL_X-1: x-1][y][past_cell] == true)
	{
		++count;
	}
	if(cell_array[(x+1 >= CELL_X) ? 0: x+1][y][past_cell] == true)
	{
		++count;
	}
	if(cell_array[(x-1 < 0) ? CELL_X-1: x-1][(y+1 >= CELL_Y) ? 0: y+1][past_cell] == true)
	{
		++count;
	}
	if(cell_array[x][(y+1 >= CELL_Y) ? 0: y+1][past_cell] == true)
	{
		++count;
	}
	if(cell_array[(x+1 >= CELL_X) ? 0: x+1][(y+1 >= CELL_Y) ? 0: y+1][past_cell] == true)
	{
		++count;
	}
	return count;
}
 
int CellTable::set_glider()
{
	set_cell_alive_state(1, 0);
	set_cell_alive_state(2, 1);
	set_cell_alive_state(0, 2);
	set_cell_alive_state(1, 2);
	set_cell_alive_state(2, 2);
 
	return 0;
}
 
int CellTable::set_penta()
{
	set_cell_alive_state(17, 5);
	set_cell_alive_state(17, 6);
	set_cell_alive_state(17, 7);
	set_cell_alive_state(22, 5);
	set_cell_alive_state(22, 6);
	set_cell_alive_state(22, 7);
	set_cell_alive_state(16, 6);
	set_cell_alive_state(23, 6);
	return 0;
}