func moveCamera(camera *trace.FreeFlightCamera, dtf float32) {
state := sdl.GetKeyboardState()
switch {
case state[sdl.GetScancodeFromKey(sdl.K_UP)] != 0:
camera.YRot += dtf * cameraSpeed
case state[sdl.GetScancodeFromKey(sdl.K_DOWN)] != 0:
camera.YRot -= dtf * cameraSpeed
case state[sdl.GetScancodeFromKey(sdl.K_LEFT)] != 0:
camera.XRot += dtf * cameraSpeed
case state[sdl.GetScancodeFromKey(sdl.K_RIGHT)] != 0:
camera.XRot -= dtf * cameraSpeed
case state[sdl.GetScancodeFromKey(sdl.K_w)] != 0:
camera.Move(dtf * cameraSpeed)
case state[sdl.GetScancodeFromKey(sdl.K_s)] != 0:
camera.Move(dtf * -cameraSpeed)
case state[sdl.GetScancodeFromKey(sdl.K_a)] != 0:
camera.Strafe(dtf * cameraSpeed)
case state[sdl.GetScancodeFromKey(sdl.K_d)] != 0:
camera.Strafe(dtf * -cameraSpeed)
case state[sdl.GetScancodeFromKey(sdl.K_e)] != 0:
camera.Lift(dtf * cameraSpeed)
case state[sdl.GetScancodeFromKey(sdl.K_q)] != 0:
camera.Lift(dtf * -cameraSpeed)
}
}
// GetScancodeFromKey translates a key to scancode.
func GetScancodeFromKey(key Key) Scancode {
return Scancode(sdl.GetScancodeFromKey(sdl.Keycode(key)))
}
func (i *Input) handleKeyUpEvent(e *sdl.KeyUpEvent) {
code := sdl.GetScancodeFromKey(e.Keysym.Sym)
if i.oldKeyStates[code] == 1 {
i.KeyUpHandlers.trigger(KeyCode(code))
}
}