-- Descended from maikerumine "snowball" code
-- License for code WTFPL

local snowball_GRAVITY  = 9
local snowball_VELOCITY = 19

mobs:register_arrow (":mobs:snowball_entity", {
    visual = "sprite",
    visual_size = {x=.5, y=.5},
    textures = {"default_snowball.png"},
    velocity = snowball_VELOCITY,

    hit_player = function(self, player)
        player:punch(self.object, 1.0, {
            full_punch_interval = 1.0,
            damage_groups = {},
        }, nil)
    end,

    hit_mob = function(self, mob)
        mob:punch(self.object, 1.0, {
            full_punch_interval = 1.0,
            damage_groups = {},
        }, nil)
    end ,
})

local mobs_shoot_snowball = function (item, player, pointed_thing)
    local playerpos = player:get_pos()

    local obj = minetest.add_entity (
        { x = playerpos.x, y = playerpos.y +1.5, z = playerpos.z } ,
        "mobs:snowball_entity")

    local ent = obj:get_luaentity()
    local dir = player:get_look_dir()

    ent.velocity = snowball_VELOCITY -- needed for api internal timing
    ent.switch = 1 -- needed so that item doesn't despawn straight away

    obj:set_velocity({
        x = dir.x * snowball_VELOCITY,
        y = dir.y * snowball_VELOCITY,
        z = dir.z * snowball_VELOCITY,
    })

    obj:set_acceleration ({
        x = dir.x * -3,
        y = -snowball_GRAVITY,
        z = dir.z * -3
    })

    -- pass player name to item for chick ownership
    local ent2 = obj:get_luaentity()
    ent2.playername = player:get_player_name()

    if not minetest.settings:get_bool ("creative_mode") then
        item:take_item()
    end

    return item
end

-- Snowball
minetest.register_craftitem (":mobs:snowball", {
    description     = "Snowball"             ,
    inventory_image = "default_snowball.png" ,
    on_use          = mobs_shoot_snowball    ,
})