mobs:register_mob("nssm:larva", {
    type = "monster",
    hp_max = 12,
    hp_min = 8,
    collisionbox = {-0.3, 0, -0.3, 0.3, 0.41, 0.3},
    visual = "mesh",
    mesh = "larva.x",
    textures = {{"larva.png"}},
    visual_size = {x=3, y=3},
    makes_footstep_sound = false,
    view_range = 10,
    rotate = 90,
    jump = false,
    fear_height = 4,
    jump_height =0,
    walk_velocity = 0.4,
    run_velocity = 0.4,
    sounds = {
        random = "sand",
    },
    damage = 1,
    reach = 1,
    drops = {
        {name = "nssm:life_energy",
        chance = 3,
        min = 1,
        max = 1,},
        {name = "nssm:larva_meat",
        chance = 2,
        min = 1,
        max = 2,},
    },
    armor = 80,
    drawtype = "front",
    water_damage = 2,
    lava_damage = 4,
    light_damage = 0,
    group_attack=true,
    attack_animals=true,
    knock_back=2,
    blood_texture="nssm_blood_blue.png",
    on_rightclick = nil,
    attack_type = "dogfight",
    animation = {
        speed_normal = 20,
        speed_run = 20,
        stand_start = 0,
        stand_end = 80,
        walk_start = 100,
        walk_end = 160,
        run_start = 100,
        run_end = 160,
        punch_start = 180,
        punch_end = 230,
    },
    do_custom = function (self)
        self.metatimer = (self.metatimer) or os.time()
        if os.time() - self.metatimer >20 then
            minetest.log("action",
                "metatimer expired, metamorphosis! ")
            local pos=self.object:getpos()
            self.object:remove()
            minetest.add_particlespawner({
                amount = 200,
                time = 0.1,
                minpos = {x=pos.x-1, y=pos.y-1, z=pos.z-1},
                maxpos = {x=pos.x+1, y=pos.y+1, z=pos.z+1},
                minvel = {x=-0, y=-0, z=-0},
                maxvel = {x=1, y=1, z=1},
                minacc = {x=-0.5,y=5,z=-0.5},
                maxacc = {x=0.5,y=5,z=0.5},
                minexptime = 0.1,
                maxexptime = 1,
                minsize = 3,
                maxsize = 4,
                collisiondetection = false,
                texture = "tnt_smoke.png"
            })
            if math.random(1,2)==1 then
                minetest.add_entity(pos, "nssm:mantis")
            else
                minetest.add_entity(pos, "nssm:mantis_beast")
            end
            return
        end
    end
})