243 lines
6.9 KiB
Lua
243 lines
6.9 KiB
Lua
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-- Machine definitions
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--[[
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Groups:
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ele_machine Any machine that does something with power
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ele_provider Any machine that can provide power (generator, storage, etc)
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ele_user Any machine that uses power
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ele_storage Any machine that stores power
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ele_conductor A node that is used to connect ele_machine nodes together
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Custom nodedef variables:
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ele_capacity = 12000
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Static capacitor for nodes.
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** Can be overridden by metadata: `capacity`
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ele_inrush = 32
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Decides how much power can be inserted into this machine's internal capacitor.
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** Can be overridden by metadata: `inrush`
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ele_output = 64
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Decides how much power a `ele_provider` node can output.
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** SHOULD be overridden by metadata: `output`
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ele_sides = nil
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All sides of providers currently output power. All sides of other nodes accept power.
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** SHOULD be overridden by metadata: `sides`
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ele_usage = 16
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How much power this machine uses or generates.
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** Can be overridden by metadata: `usage`
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ele_active_node = nil
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Set to true or a string to also register an active variant of this node.
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If the parameter is a boolean, "_active" will be appended to the `node_name`
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ele_active_nodedef = nil
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If set, the `ele_active_node` will have this table in its nodedef.
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Intended use: to set textures or light output.
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]]
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local function allow_metadata_inventory_put(pos, listname, index, stack, player)
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if minetest.is_protected(pos, player:get_player_name()) then
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return 0
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end
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if listname == "dst" then
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return 0
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end
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return stack:get_count()
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end
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local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
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local meta = minetest.get_meta(pos)
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local inv = meta:get_inventory()
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local stack = inv:get_stack(from_list, from_index)
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return allow_metadata_inventory_put(pos, to_list, to_index, stack, player)
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end
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local function allow_metadata_inventory_take(pos, listname, index, stack, player)
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if minetest.is_protected(pos, player:get_player_name()) then
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return 0
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end
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return stack:get_count()
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end
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function metadata_inventory_changed(pos)
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local t = minetest.get_node_timer(pos)
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if not t:is_started() then
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t:start(1.0)
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end
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end
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-- Preserve power storage in the item stack dropped
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local function preserve_metadata(pos, oldnode, oldmeta, drops)
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local meta = minetest.get_meta(pos)
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local capacity = ele.helpers.get_node_property(meta, pos, "capacity")
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local storage = ele.helpers.get_node_property(meta, pos, "storage")
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local nodedesc = minetest.registered_nodes[oldnode.name].description
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if storage == 0 then
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return drops
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end
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for i,stack in pairs(drops) do
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local stack_meta = stack:get_meta()
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stack_meta:set_int("storage", storage)
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stack_meta:set_string("description", nodedesc.."\nCharge: " .. storage .. "/" .. capacity .. " " .. ele.unit)
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drops[i] = stack
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end
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return drops
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end
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-- Retrieve power storage from itemstack when placed
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local function retrieve_metadata(pos, placer, itemstack, pointed_thing)
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local item_meta = itemstack:get_meta()
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local storage = item_meta:get_int("storage")
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if storage and storage > 0 then
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local meta = minetest.get_meta(pos)
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meta:set_int("storage", storage)
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minetest.get_node_timer(pos):start(1.0)
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end
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return false
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end
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function ele.capacity_text(capacity, storage)
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return "Charge: " .. storage .. "/" .. capacity .. " " ..ele.unit
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end
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-- Register a base device
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function ele.register_base_device(nodename, nodedef)
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-- Override construct callback
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local original_on_construct = nodedef.on_construct
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nodedef.on_construct = function (pos)
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if nodedef.groups and nodedef.groups["ele_machine"] then
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local meta = minetest.get_meta(pos)
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meta:set_int("storage", 0)
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end
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ele.clear_networks(pos)
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if original_on_construct then
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original_on_construct(pos)
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end
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end
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-- Override destruct callback
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local original_after_destruct = nodedef.after_destruct
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nodedef.after_destruct = function (pos)
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ele.clear_networks(pos)
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if original_after_destruct then
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original_after_destruct(pos)
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end
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end
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-- Save storage amount when picked up
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nodedef.preserve_metadata = preserve_metadata
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nodedef.after_place_node = retrieve_metadata
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-- Finally, register the damn thing already
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minetest.register_node(nodename, nodedef)
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-- Register an active variant if configured.
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if nodedef.ele_active_node then
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local active_nodedef = ele.helpers.table_copy(nodedef)
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local active_name = nodename.."_active"
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if nodedef.ele_active_node ~= true then
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active_name = nodedef.ele_active_node
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end
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if nodedef.ele_active_nodedef then
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for k,v in pairs(nodedef.ele_active_nodedef) do
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active_nodedef[k] = v
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end
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nodedef.ele_active_nodedef = nil
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active_nodedef.ele_active_nodedef = nil
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end
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active_nodedef.groups["ele_active"] = 1
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active_nodedef.groups["not_in_creative_inventory"] = 1
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active_nodedef.drop = nodename
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minetest.register_node(active_name, active_nodedef)
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end
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end
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function ele.register_machine(nodename, nodedef)
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if not nodedef.groups then
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nodedef.groups = {}
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end
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-- Start cleaning up the nodedef
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local defaults = {
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ele_capacity = 1600,
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ele_inrush = 64,
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ele_usage = 64,
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ele_output = 64,
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ele_sides = nil,
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paramtype2 = "facedir"
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}
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-- Ensure everything that's required is present
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for k,v in pairs(defaults) do
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if not nodedef[k] then
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nodedef[k] = v
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end
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end
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-- Ensure machine group is used properly
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if not nodedef.groups["ele_conductor"] and not nodedef.groups["ele_machine"] then
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nodedef.groups["ele_machine"] = 1
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elseif nodedef.groups["ele_conductor"] and nodedef.groups["ele_machine"] then
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nodedef.groups["ele_machine"] = 0
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end
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-- Add ports to the device's faces
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if nodedef.tiles and #nodedef.tiles == 6 then
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for i = 1, 5 do
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nodedef.tiles[i] = nodedef.tiles[i] .. "^elepower_power_port.png"
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end
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end
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-- Add ports to the device's active faces
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if nodedef.ele_active_nodedef and nodedef.ele_active_nodedef.tiles and #nodedef.ele_active_nodedef.tiles == 6 then
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for i = 1, 5 do
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nodedef.ele_active_nodedef.tiles[i] = nodedef.ele_active_nodedef.tiles[i] .. "^elepower_power_port.png"
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end
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end
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-- Default metadata handlers for "src" and "dst"
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if not nodedef.allow_metadata_inventory_put then
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nodedef.allow_metadata_inventory_put = allow_metadata_inventory_put
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nodedef.allow_metadata_inventory_move = allow_metadata_inventory_move
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end
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if not nodedef.allow_metadata_inventory_take then
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nodedef.allow_metadata_inventory_take = allow_metadata_inventory_take
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end
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-- Default metadata changed handlers for inventories
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-- Starts the timer on the node
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if not nodedef.on_metadata_inventory_move then
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nodedef.on_metadata_inventory_move = metadata_inventory_changed
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end
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if not nodedef.on_metadata_inventory_put then
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nodedef.on_metadata_inventory_put = metadata_inventory_changed
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end
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if not nodedef.on_metadata_inventory_take then
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nodedef.on_metadata_inventory_take = metadata_inventory_changed
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end
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ele.register_base_device(nodename, nodedef)
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end
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