-- Emitter Node

local action = function(pos, _, puncher)
    local itemstack = puncher:get_wielded_item()
    local tool_name = itemstack:get_name()
    local can_extract_from_emitter = minetest.get_item_group(tool_name, "core_drop_multi") > 0
    if not can_extract_from_emitter then
        minetest.sound_play("punch_core", {
            gain = 1.0,
            max_hear_distance = 32,
            pos = pos
        })
        if puncher.is_fake_player then return end
        displayDialougeLine(puncher:get_player_name(), "Emitters can only be mined using tools or machines.")
    end
    for _ = 1, minetest.get_item_group(tool_name, "core_drop_multi") do
        if math.random(1, 10) == 1 then
            puncher:get_inventory():add_item("main", "sbz_resources:raw_emittrium")
            minetest.sound_play("punch_core", {
                gain = 1.0,
                max_hear_distance = 32,
                pos = pos
            })
            minetest.add_particlespawner({
                amount = 50,
                time = 1,
                minpos = { x = pos.x - 0.5, y = pos.y - 0.5, z = pos.z - 0.5 },
                maxpos = { x = pos.x + 0.5, y = pos.y + 0.5, z = pos.z + 0.5 },
                minvel = { x = -1, y = -1, z = -1 },
                maxvel = { x = 1, y = 1, z = 1 },
                minacc = { x = 0, y = 0, z = 0 },
                maxacc = { x = 0, y = 0, z = 0 },
                minexptime = 3,
                maxexptime = 5,
                minsize = 0.5,
                maxsize = 1.0,
                collisiondetection = false,
                vertical = false,
                texture = "raw_emittrium.png",
                glow = 10
            })
            unlock_achievement(puncher:get_player_name(), "Obtain Emittrium")
        else
            minetest.sound_play("punch_core", {
                gain = 1.0,
                max_hear_distance = 32,
                pos = pos
            })
            local items = { "sbz_resources:core_dust", "sbz_resources:matter_dust", "sbz_resources:charged_particle" }
            local item = items[math.random(#items)]

            if puncher and puncher:is_player() then
                local inv = puncher:get_inventory()
                if inv then
                    local leftover = inv:add_item("main", item)
                    if not leftover:is_empty() then
                        minetest.add_item(pos, leftover)
                    end
                end

                unlock_achievement(puncher:get_player_name(), "Introduction")
            end
        end
    end
end

minetest.register_node("sbz_resources:emitter", {
    description = "Emitter",
    tiles = { "emitter.png" },
    groups = { unbreakable = 1, transparent = 1 },
    drop = "",
    sunlight_propagates = true,
    paramtype = "light",
    light_source = 14,
    walkable = true,
    on_punch = action,
    on_rightclick = action
})


minetest.register_abm({
    label = "Emitter Particles",
    nodenames = { "sbz_resources:emitter" },
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
        minetest.add_particlespawner({
            amount = 5,
            time = 1,
            minpos = { x = pos.x - 0.5, y = pos.y - 0.5, z = pos.z - 0.5 },
            maxpos = { x = pos.x + 0.5, y = pos.y + 0.5, z = pos.z + 0.5 },
            minvel = { x = -5, y = -5, z = -5 },
            maxvel = { x = 5, y = 5, z = 5 },
            minacc = { x = 0, y = 0, z = 0 },
            maxacc = { x = 0, y = 0, z = 0 },
            minexptime = 30,
            maxexptime = 50,
            minsize = 0.5,
            maxsize = 1.0,
            collisiondetection = false,
            vertical = false,
            texture = "star.png",
            glow = 10
        })
    end,
})

minetest.register_ore({
    ore_type = "scatter",
    ore = "sbz_resources:emitter",
    wherein = "air",
    clust_scarcity = 80 * 80 * 80,
    clust_num_ores = 1,
    clust_size = 1,
    _min = -31000,
    y_max = 31000,
})

-- Emitter Resources
minetest.register_craftitem("sbz_resources:raw_emittrium", {
    description = "Raw Emittrium",
    inventory_image = "raw_emittrium.png",
    stack_max = 16,
})


-- THE CORE!!! interraction...
local function core_interact(pos, node, puncher, itemstack, pointed_thing)
    if not pointed_thing then --this is on_punch instead, which doesn't use itemstack
        pointed_thing = itemstack
        itemstack = nil
    end

    minetest.sound_play("punch_core", {
        gain = 1.0,
        max_hear_distance = 32,
        pos = pos
    })

    itemstack = puncher:get_wielded_item()
    local tool_name = itemstack:get_name()



    local multi = minetest.get_item_group(tool_name, "core_drop_multi")
    local n = 1

    if not puncher then return end
    if not puncher:is_player() then return end

    if multi and multi ~= 0 then n = multi end
    for _ = 1, n do
        local items = { "sbz_resources:core_dust", "sbz_resources:matter_dust", "sbz_resources:charged_particle" }
        local item = items[math.random(#items)]
        unlock_achievement(puncher:get_player_name(), "Introduction")

        if itemstack and itemstack:get_name() == item and itemstack:get_count() < 256 then -- case: wield item
            itemstack:set_count(itemstack:get_count() + 1)
            return itemstack
        end

        local inv = puncher:get_inventory()

        if inv then
            minetest.after(0, function() -- engine bug makes things weird... if you remove this, troubles may arise
                local leftover = inv:add_item("main", item)
                if not leftover:is_empty() then
                    minetest.add_item(pos, leftover)
                end
            end)
        end
    end
end

-- THE CORE!!!
minetest.register_node("sbz_resources:the_core", {
    description = "The Core",
    tiles = { "the_core.png" },
    groups = { unbreakable = 1 },
    drop = "",
    sunlight_propagates = true,
    paramtype = "light",
    light_source = 14,
    walkable = true,
    on_punch = core_interact,
    on_rightclick = core_interact,
})

-- Core Particles
minetest.register_abm({
    label = "Core Particles",
    nodenames = { "sbz_resources:the_core" },
    interval = 1,
    chance = 1,
    action = function(pos, node, active_object_count, active_object_count_wider)
        minetest.add_particlespawner({
            amount = 1,
            time = 1,
            minpos = { x = pos.x - 0.5, y = pos.y - 0.5, z = pos.z - 0.5 },
            maxpos = { x = pos.x + 0.5, y = pos.y + 0.5, z = pos.z + 0.5 },
            minvel = { x = -0.5, y = -0.5, z = -0.5 },
            maxvel = { x = 0.5, y = 0.5, z = 0.5 },
            minacc = { x = 0, y = 0, z = 0 },
            maxacc = { x = 0, y = 0, z = 0 },
            minexptime = 10,
            maxexptime = 20,
            minsize = 0.5,
            maxsize = 1.0,
            collisiondetection = false,
            vertical = false,
            texture = "core_particle.png",
            glow = 10
        })
    end,
})
