我正在写一个游戏,我最终需要一个控制台来进行简单的文本输入;文件名和简单值。
使用 SDL,我的控制台看起来最简单:
class Console
{
public:
typedef std::list<String> InputList;
enum Result
{
NOTHING = 0,
ENTERED,
ESCAPED
};
static const String& GetInput() { return input; }
static Result Query(SDLKey lastKey)
{
if(lastResult == ENTERED || lastResult == ESCAPED)
{
input.clear();
}
switch (lastKey)
{
case SDLK_a:
case SDLK_b:
case SDLK_c:
case SDLK_d:
case SDLK_e:
case SDLK_f:
case SDLK_g:
case SDLK_h:
case SDLK_i:
case SDLK_j:
case SDLK_k:
case SDLK_l:
case SDLK_m:
case SDLK_n:
case SDLK_o:
case SDLK_p:
case SDLK_q:
case SDLK_r:
case SDLK_s:
case SDLK_t:
case SDLK_u:
case SDLK_v:
case SDLK_w:
case SDLK_x:
case SDLK_y:
case SDLK_z:
case SDLK_0:
case SDLK_1:
case SDLK_2:
case SDLK_3:
case SDLK_4:
case SDLK_5:
case SDLK_6:
case SDLK_7:
case SDLK_8:
case SDLK_9:
case SDLK_SLASH:
case SDLK_BACKSLASH:
case SDLK_PERIOD:
case SDLK_COMMA:
case SDLK_SPACE:
case SDLK_UNDERSCORE:
case SDLK_MINUS:
input += static_cast<char> (lastKey);
lastResult = NOTHING;
break;
case SDLK_RETURN:
lastResult = ENTERED;
break;
case SDLK_ESCAPE:
lastResult = ESCAPED;
break;
}
return lastResult;
}
protected:
static Result lastResult;
static String input;
};
这将从应用程序的主事件循环中调用,如果控制台处于活动状态并且最后一个事件是按键,那么输入的结果将在必要的状态下进行处理。
当然,它看起来非常尴尬......有什么更好的方法来实现一个可以在我的游戏窗口中轻松呈现的简单控制台?(不要接近高度不可移植的解决方案,例如必须重新路由 std::cout 或编写代码以启动 UNIX 控制台等。)