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'''
#include
#include
#include
#include
#include
#include
using namespace std;
bool gameover;
const int width = 20;
const int height = 20;
int x, y, fruitx, fruity, score;
int tailx[100], taily[100], ntail;
enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN };
eDirection dir;
struct termios stored_settings;
void Setup()
{
??gameover = false;
??dir = STOP;
??x = width / 2;
??y = height / 2;
??fruitx = rand() % width;
??fruity = rand() % height;
??score = 0;
}
void Draw()
{
??system("clear"); // 清空屏幕
??for (int i = 0; i < width + 2; i++) // 畫出上邊緣
????cout << "#";
??cout << endl;
??for (int i = 0; i < height; i++) // 畫出每一行的內容
??{
????for (int j = 0; j < width; j++)
????{
??????if (j == 0)
????????cout << "#"; // 左邊緣
??????if (i == y && j == x)
????????cout << "O"; // 蛇頭位置
??????else if (i == fruity && j == fruitx)
????????cout << "F"; // 果實位置
??????else
??????{
????????bool print = false;
????????for (int k = 0; k < ntail; k++)
????????{
??????????if (tailx[k] == j && taily[k] == i)
??????????{
????????????cout << "o";
????????????print = true;
??????????}
????????}
????????if (!print)
??????????cout << " ";
??????}
??????if (j == width - 1)
????????cout << "#"; // 右邊緣
????}
????cout << endl;
??}
??for (int i = 0; i < width + 2; i++) // 畫出下邊緣
????cout << "#";
??cout << endl;
??cout << "Score:" << score << endl;
}
void Input()
{
??char c;
??if (read(STDIN_FILENO, &c, 1) == 1)
??{
????switch (c)
????{
????case 'a':
??????dir = LEFT;
??????break;
????case 'd':
??????dir = RIGHT;
??????break;
????case 'w':
??????dir = UP;
??????break;
????case 's':
??????dir = DOWN;
??????break;
????case 'x':
??????gameover = true;
??????break;
????}
??}
}
void Logic()
{
??int prevx = tailx[0];
??int prevy = taily[0];
??int prev2x, prev2y;
??tailx[0] = x;
??taily[0] = y;
??for (int i = 1; i < ntail; i++)
??{
????prev2x = tailx[i];
????prev2y = taily[i];
????tailx[i] = prevx;
????taily[i] = prevy;
????prevx = prev2x;
????prevy = prev2y;
??}
??switch (dir)
??{
??case LEFT:
????x--;
????break;
??case RIGHT:
????x++;
????break;
??case UP:
????y--;
????break;
??case DOWN:
????y++;
????break;
??default:
????break;
??}
??// 撞墻
??if (x >= width)
????x = 0;
??else if (x < 0)
????x = width - 1;
??if (y >= height)
????y = 0;
??else if (y < 0)
????y = height - 1;
??// 撞到自己
??for (int i = 0; i < ntail; i++)
??{
????if (tailx[i] == x && taily[i] == y)
??????gameover = true;
??}
??if (x == fruitx && y == fruity)
??{
????score += 10;
????fruitx = rand() % width;
????fruity = rand() % height;
????ntail++;
??}
}
int main()
{
??Setup();
??struct termios new_settings;
??tcgetattr(STDIN_FILENO, &stored_settings);
??new_settings = stored_settings;
??new_settings.c_lflag &= (~ICANON & ~ECHO);
??tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
??while (!gameover)
??{
????Draw();
????Input();
????Logic();
????usleep(50000); // 蛇的速度限制
??}
??tcsetattr(STDIN_FILENO, TCSANOW, &stored_settings);
??return 0;
}
'''
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