写一个五子棋，c代码，easyx库

好的，以下是一个简单的五子棋游戏的C代码，使用了EasyX库：

#include <graphics.h>
#include <conio.h>

#define BOARD_SIZE 15
#define BLOCK_SIZE 40
#define BOARD_LEFT 100
#define BOARD_TOP 100
#define BOARD_RIGHT BOARD_LEFT + BLOCK_SIZE * (BOARD_SIZE - 1)
#define BOARD_BOTTOM BOARD_TOP + BLOCK_SIZE * (BOARD_SIZE - 1)

enum ChessType { NONE, BLACK, WHITE };

struct Chess {
    ChessType type;
    int x, y;
};

Chess board[BOARD_SIZE][BOARD_SIZE];
ChessType current_player = BLACK;

void draw_board() {
    setbkcolor(RGB(255, 206, 158));
    cleardevice();
    setlinecolor(BLACK);
    for (int i = 0; i < BOARD_SIZE; i++) {
        line(BOARD_LEFT, BOARD_TOP + BLOCK_SIZE * i, BOARD_RIGHT, BOARD_TOP + BLOCK_SIZE * i);
        line(BOARD_LEFT + BLOCK_SIZE * i, BOARD_TOP, BOARD_LEFT + BLOCK_SIZE * i, BOARD_BOTTOM);
    }
}

void draw_chess(Chess chess) {
    int x = BOARD_LEFT + BLOCK_SIZE * chess.x;
    int y = BOARD_TOP + BLOCK_SIZE * chess.y;
    if (chess.type == BLACK) {
        setfillcolor(BLACK);
        solidcircle(x, y, BLOCK_SIZE / 2 - 2);
    } else if (chess.type == WHITE) {
        setfillcolor(WHITE);
        solidcircle(x, y, BLOCK_SIZE / 2 - 2);
        setfillcolor(BLACK);
        solidcircle(x, y, BLOCK_SIZE / 4);
    }
}

bool is_valid_pos(int x, int y) {
    return x >= 0 && x < BOARD_SIZE && y >= 0 && y < BOARD_SIZE && board[x][y].type == NONE;
}

bool is_win(int x, int y) {
    ChessType type = board[x][y].type;
    int count = 1;
    for (int i = x - 1; i >= 0 && board[i][y].type == type; i--) count++;
    for (int i = x + 1; i < BOARD_SIZE && board[i][y].type == type; i++) count++;
    if (count >= 5) return true;
    count = 1;
    for (int i = y - 1; i >= 0 && board[x][i].type == type; i--) count++;
    for (int i = y + 1; i < BOARD_SIZE && board[x][i].type == type; i++) count++;
    if (count >= 5) return true;
    count = 1;
    for (int i = x - 1, j = y - 1; i >= 0 && j >= 0 && board[i][j].type == type; i--, j--) count++;
    for (int i = x + 1, j = y + 1; i < BOARD_SIZE && j < BOARD_SIZE && board[i][j].type == type; i++, j++) count++;
    if (count >= 5) return true;
    count = 1;
    for (int i = x - 1, j = y + 1; i >= 0 && j < BOARD_SIZE && board[i][j].type == type; i--, j++) count++;
    for (int i = x + 1, j = y - 1; i < BOARD_SIZE && j >= 0 && board[i][j].type == type; i++, j--) count++;
    if (count >= 5) return true;
    return false;
}

void switch_player() {
    current_player = current_player == BLACK ? WHITE : BLACK;
}

void play() {
    initgraph(BOARD_RIGHT + 100, BOARD_BOTTOM + 100);
    draw_board();
    while (true) {
        int x = (getmousex() - BOARD_LEFT + BLOCK_SIZE / 2) / BLOCK_SIZE;
        int y = (getmousey() - BOARD_TOP + BLOCK_SIZE / 2) / BLOCK_SIZE;
        if (is_valid_pos(x, y)) {
            setcursor(HAND_CURSOR);
            if (MouseHit()) {
                MouseMsg msg = GetMouseMsg();
                if (msg.uMsg == WM_LBUTTONDOWN) {
                    Chess chess = { current_player, x, y };
                    board[x][y] = chess;
                    draw_chess(chess);
                    if (is_win(x, y)) {
                        settextstyle(50, 0, _T("Arial"));
                        settextcolor(current_player == BLACK ? BLACK : WHITE);
                        outtextxy(BOARD_LEFT, BOARD_BOTTOM + 50, current_player == BLACK ? _T("黑方胜利") : _T("白方胜利"));
                        getch();
                        break;
                    }
                    switch_player();
                }
            }
        } else {
            setcursor(ARROW_CURSOR);
        }
    }
    closegraph();
}

int main() {
    play();
    return 0;
}

这个程序使用了EasyX库来绘制图形界面，实现了一个简单的五子棋游戏。玩家可以使用鼠标来下棋，程序会自动判断胜负并显示结果。