var dx = (keyboard_check(vk_right) || (joystick_direction(1) == vk_numpad6)) - (keyboard_check(vk_left) || (joystick_direction(1) == vk_numpad4));
var dy = (keyboard_check(vk_down) || (joystick_direction(1) == vk_numpad2)) - (keyboard_check(vk_up) || (joystick_direction(1) == vk_numpad8));

if (dx == 0 && dy == 0)
{
    sprite_index = s_stand;
    image_speed = 0;
}
else
{
    if (dx > 0)
        sprite_index = s_walk_right;
    else if (dx < 0)
        sprite_index = s_walk_left;
    if (dy > 0)
        sprite_index = s_walk_down;
    else if (dy < 0)
        sprite_index = s_walk_up;
    x += dx * 5;
    y += dy * 5;
    image_speed = 0.5;
}