void NINJAKUN::stop()
{
  if(isKeyDown(LEFT)){ m_direction = LEFT; m_state = MOVE; }
  else if(isKeyDown(RIGHT)){ m_direction = RIGHT; m_state = MOVE; }
  else if(isKeyDown(JUMP)){ m_jump_direction = m_direction; m_state = JUMP; }
}

void NINJAKUN::jump()
{
  if(isKeyDown(LEFT)){ m_direction = LEFT; }
  else if(isKeyDown(RIGHT)){ m_direction = RIGHT; }

  if(m_jump_direction == LEFT) { m_position.x -= IDOURYOU; }
  else { m_position.y += IDOURYOU; }
}