mobs:register_mob("mobs:ninja", {
    type = "monster",
    hp_max = 15,
    collisionbox = {-0.4, -1, -0.4, 0.4, 1, 0.4},
    visual = "upright_sprite",
    visual_size = {x=1, y=2},
    textures = {"ninja.png", "ninja_back.png"},
    makes_footstep_sound = true,
    view_range = 15,
    walk_velocity = 1,
    run_velocity = 3,
    damage = 2,
    drops = {
        max_items = 4,
        items = {
            {
                items = {'default:coal_lump'},
                rarity = 5,
            },
            {
                items = {'default:clay_lump'},
                rarity = 4,
            },
            {
                items = {'default:iron_lump'},
                rarity = 40,
            },
            {
                items = {'default:ore_lump'},
                rarity = 70,
            },
            {
                items = {'default:gravel'},
                rarity = 3,
            },
            {
                items = {'default:stone'},
                rarity = 2,
            },
            {
                items = {'default:sand'},
                rarity = 2,
            },
            {
                items = {'default:dirt'},
            },
        },
    },
    armor = 3,
    drawtype = "front",
    water_damage = 0,
    lava_damage = 10,
    light_damage = 3,
    on_rightclick = nil,
    attack_type = "dogfight",
})
mobs:register_spawn("mobs:ninja", {"brilliant_blocks:sand"}, 8, -1, 600, 40, 31000)