成员的完整列表，这些成员属于 eve::camera::PcgFreeCameraInput,包括所有继承而来的类成员

escapePressed	eve::camera::PcgFreeCameraInput
focused	eve::camera::PcgFreeCameraInput
forward	eve::camera::PcgFreeCameraInput
leftPressed	eve::camera::PcgFreeCameraInput
mouseX	eve::camera::PcgFreeCameraInput
mouseY	eve::camera::PcgFreeCameraInput
right	eve::camera::PcgFreeCameraInput
rightPressed	eve::camera::PcgFreeCameraInput
rightReleased	eve::camera::PcgFreeCameraInput
scroll	eve::camera::PcgFreeCameraInput
sprint	eve::camera::PcgFreeCameraInput
up	eve::camera::PcgFreeCameraInput