GameEngine_v0.2.cpp

#include <windows.h>
#include <iostream>
#include <conio.h>

struct Position {
    int x = 10;
    int y = 5;
};

struct Command {
    bool isMoveCommand = false;
    bool isSystemCommand = false;
};

struct MoveCommand {
    bool up = false;
    bool down = false;
    bool left = false;
    bool right = false;
};

struct SystemCommand {
    bool running = false;
    bool quit = false;
};

class Character {
public:
    int getPositionX() {
        return pos.x;
    }

    int getPositionY() {
        return pos.y;
    }

    void setPositionX(int newPosX) {
        pos.x = newPosX;
    }

    void setPositionY(int newPosY) {
        pos.y = newPosY;
    }

private:
    Position pos;
};

void GoToXY(int x, int y) {
    COORD coord;
    coord.X = x;
    coord.Y = y;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
}

// 隐藏光标，避免闪烁
void hideCursor() {
    CONSOLE_CURSOR_INFO cursorInfo;
    GetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cursorInfo);
    cursorInfo.bVisible = false;
    SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cursorInfo);
}

// 清空输入缓冲区中所有待处理的按键
void cleanInputBuffer() {
    HANDLE hInput = GetStdHandle(STD_INPUT_HANDLE);
    FlushConsoleInputBuffer(hInput);
}

// 设置颜色的辅助函数
void SetColor(int textColor, int backgroundColor) {
    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleTextAttribute(hConsole, backgroundColor * 16 + textColor);
}

// 检测按键是否被按下
bool isKeyPressed(int vKey) {
    return (GetAsyncKeyState(vKey) & 0x8000) != 0;
}

void move(MoveCommand& moveCommand, Character& character) {
    int x = character.getPositionX();
    int y = character.getPositionY();
    if (moveCommand.up == true && y > 5) {
        character.setPositionY(--y);
    }
    if (moveCommand.left == true && x > 11) {
        x -= 2;
        character.setPositionX(x);
    }
    if (moveCommand.down == true && y < 25) {
        character.setPositionY(++y);
    }
    if (moveCommand.right == true && x < 100) {
        x += 2;
        character.setPositionX(x);
    }
}

// 清除指定位置的火柴人（用空格覆盖，防止拖影）
void clearCharacter(Character& character) {
    int x = character.getPositionX();
    int y = character.getPositionY();
    GoToXY(x, y);     std::cout << "     ";
    GoToXY(x, y + 1); std::cout << "      ";
    GoToXY(x, y + 2); std::cout << "      ";
}

void render(Character& character) {
    int x = character.getPositionX();
    int y = character.getPositionY();
    GoToXY(x, y++);
    std::cout << "  O  " << std::endl;   // 头
    GoToXY(x, y++);
    std::cout << " /|\\ " << std::endl;  // 身体和手
    GoToXY(x, y);
    std::cout << " / \\ " << std::endl;  // 腿
    hideCursor();
}

void checkBoarder(Character& character) {
    int x = character.getPositionX();
    int y = character.getPositionY();
    if (x == 10) {
        GoToXY(x - 1, y);
        std::cout << "|" << std::endl;
        GoToXY(x - 1, y + 1);
        std::cout << "|" << std::endl;
        GoToXY(x - 1, y + 2);
        std::cout << "|" << std::endl;
    }
    else if (x == 100) {
        GoToXY(x + 6, y);
        std::cout << "|" << std::endl;
        GoToXY(x + 6, y + 1);
        std::cout << "|" << std::endl;
        GoToXY(x + 6, y + 2);
        std::cout << "|" << std::endl;
    }
    if (y == 5) {
        GoToXY(x, y - 1);
        std::cout << "______";
    }
    else if (y == 25) {
        GoToXY(x, y + 3);
        std::cout << "______";
    }
}

void screenRefresh(MoveCommand& moveCommand, Character& character) {
    clearCharacter(character);
    move(moveCommand, character);
    render(character);
    checkBoarder(character);
}

char getCommand(MoveCommand& moveCommand, SystemCommand& systemCommand, Command& sumCommand) {

    cleanInputBuffer();
    
    systemCommand.quit = isKeyPressed('0');

    if (systemCommand.quit == true) {
        sumCommand.isSystemCommand = true;
        systemCommand.running = false;
        sumCommand.isMoveCommand = false;
        return '0';
    }

    moveCommand.up = isKeyPressed('W') || isKeyPressed(VK_UP);
    moveCommand.down = isKeyPressed('S') || isKeyPressed(VK_DOWN);
    moveCommand.left = isKeyPressed('A') || isKeyPressed(VK_LEFT);
    moveCommand.right = isKeyPressed('D') || isKeyPressed(VK_RIGHT);

    sumCommand.isMoveCommand = moveCommand.up || moveCommand.down || moveCommand.left || moveCommand.right;

    return '1';
}

int main() {
    char command = '1';
    int i = 2;
    Character character;
    MoveCommand moveCommand;
    SystemCommand systemCommand;
    Command sumCommand;

    SetConsoleTitleA("Game Engine v0.2  —— 自由移动(free moving)");
    SetColor(15, 0);        // 7+8,7为白，8为亮
    std::cout << "操作时请输入'W','A','S','D'控制人物移动" << std::endl;
    std::cout << "输入'0'为终止程序" << std::endl;
    std::cout << "请输入以开始：";

    command = _getch();
    command = '1';
    system("cls");
    screenRefresh(moveCommand, character);

    while (1) {
        if (command != '0') {
            systemCommand.running = true;

            if (sumCommand.isMoveCommand == true) {
                screenRefresh(moveCommand, character);
            }

            Sleep(15);
        }
        else {
            break;
        }

        cleanInputBuffer();

        command = getCommand(moveCommand, systemCommand, sumCommand);
    }

    return 0;
}