mirror of
https://git.minetest.land/VoxeLibre/VoxeLibre.git
synced 2024-12-23 16:39:33 +01:00
280 lines
9.2 KiB
Lua
280 lines
9.2 KiB
Lua
mcl_util = {}
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-- Based on minetest.rotate_and_place
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--[[
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Attempt to predict the desired orientation of the pillar-like node
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defined by `itemstack`, and place it accordingly in one of 3 possible
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orientations (X, Y or Z).
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Stacks are handled normally if the `infinitestacks`
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field is false or omitted (else, the itemstack is not changed).
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* `invert_wall`: if `true`, place wall-orientation on the ground and ground-
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orientation on wall
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This function is a simplified version of minetest.rotate_and_place.
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The Minetest function is seen as inappropriate because this includes mirror
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images of possible orientations, causing problems with pillar shadings.
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]]
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function mcl_util.rotate_axis_and_place(itemstack, placer, pointed_thing, infinitestacks, invert_wall)
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local unode = minetest.get_node_or_nil(pointed_thing.under)
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if not unode then
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return
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end
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local undef = minetest.registered_nodes[unode.name]
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if undef and undef.on_rightclick then
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undef.on_rightclick(pointed_thing.under, unode, placer,
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itemstack, pointed_thing)
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return
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end
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local fdir = minetest.dir_to_facedir(placer:get_look_dir())
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local wield_name = itemstack:get_name()
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local above = pointed_thing.above
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local under = pointed_thing.under
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local is_x = (above.x ~= under.x)
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local is_y = (above.y ~= under.y)
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local is_z = (above.z ~= under.z)
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local anode = minetest.get_node_or_nil(above)
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if not anode then
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return
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end
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local pos = pointed_thing.above
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local node = anode
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if undef and undef.buildable_to then
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pos = pointed_thing.under
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node = unode
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end
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if minetest.is_protected(pos, placer:get_player_name()) then
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minetest.record_protection_violation(pos, placer:get_player_name())
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return
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end
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local ndef = minetest.registered_nodes[node.name]
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if not ndef or not ndef.buildable_to then
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return
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end
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local p2
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if is_y then
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if invert_wall then
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if fdir == 3 or fdir == 1 then
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p2 = 12
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else
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p2 = 6
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end
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end
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elseif is_x then
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if invert_wall then
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p2 = 0
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else
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p2 = 12
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end
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elseif is_z then
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if invert_wall then
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p2 = 0
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else
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p2 = 6
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end
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end
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minetest.set_node(pos, {name = wield_name, param2 = p2})
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if not infinitestacks then
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itemstack:take_item()
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return itemstack
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end
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end
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-- Wrapper of above function for use as `on_place` callback (Recommended).
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-- Similar to minetest.rotate_node.
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function mcl_util.rotate_axis(itemstack, placer, pointed_thing)
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mcl_util.rotate_axis_and_place(itemstack, placer, pointed_thing,
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core.setting_getbool("creative_mode"),
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placer:get_player_control().sneak)
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return itemstack
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end
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-- Moves a single item from one inventory to another
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--- source_inventory: Inventory to take the item from
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--- source_list: List name of the source inventory from which to take the item
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--- source_stack_id: The inventory position ID of the source inventory to take the item from (-1 for first occupied slot)
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--- destination_inventory: Put item into this inventory
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--- destination_list: List name of the destination inventory to which to put the item into
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-- Returns true on success and false on failure
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-- Possible failures: No item in source slot, destination inventory full
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function mcl_util.move_item(source_inventory, source_list, source_stack_id, destination_inventory, destination_list)
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if source_stack_id == -1 then
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source_stack_id = mcl_util.get_first_occupied_inventory_slot(source_inventory, source_list)
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if source_stack_id == nil then
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return false
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end
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end
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if not source_inventory:is_empty(source_list) then
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local stack = source_inventory:get_stack(source_list, source_stack_id)
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local item = stack:get_name()
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if not stack:is_empty() then
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if not destination_inventory:room_for_item(destination_list, item) then
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return false
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end
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stack:take_item()
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source_inventory:set_stack(source_list, source_stack_id, stack)
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destination_inventory:add_item(destination_list, item)
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return true
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end
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end
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return false
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end
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-- Moves a single item from one container node into another.
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--- source_pos: Position ({x,y,z}) of the node to take the item from
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--- source_list: List name of the source inventory from which to take the item
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--- source_stack_id: The inventory position ID of the source inventory to take the item from (-1 for first occupied slot)
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--- destination_pos: Position ({x,y,z}) of the node to put the item into
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--- destination_list: (optional) list name of the destination inventory. If not set, the main or source list will be used
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-- Returns true on success and false on failure
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function mcl_util.move_item_container(source_pos, source_list, source_stack_id, destination_pos, destination_list)
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local smeta = minetest.get_meta(source_pos)
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local dmeta = minetest.get_meta(destination_pos)
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local sinv = smeta:get_inventory()
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local dinv = dmeta:get_inventory()
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local snodedef = minetest.registered_nodes[minetest.get_node(source_pos).name]
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local dnodedef = minetest.registered_nodes[minetest.get_node(destination_pos).name]
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if source_stack_id == -1 then
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source_stack_id = mcl_util.get_first_occupied_inventory_slot(sinv, source_list)
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if source_stack_id == nil then
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return false
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end
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end
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-- If it's a container, put it into the container
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if dnodedef.groups.container then
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-- Automatically select a destination list if omitted
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if not destination_list then
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if dnodedef.groups.container == 2 or snodedef.groups.continer == 3 then
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destination_list = "main"
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elseif dnodedef.groups.container == 3 then
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local stack = sinv:get_stack(source_list, source_stack_id)
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local def = minetest.registered_nodes[stack:get_name()]
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if stack and (not stack:is_empty()) and (not (def and def.groups and def.groups.shulker_box)) then
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destination_list = "main"
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end
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elseif dnodedef.groups.container == 4 then
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destination_list = "src"
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end
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end
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if destination_list then
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return mcl_util.move_item(sinv, source_list, source_stack_id, dinv, destination_list)
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end
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end
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return false
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end
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-- Returns the ID of the first non-empty slot in the given inventory list
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-- or nil, if inventory is empty.
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function mcl_util.get_first_occupied_inventory_slot(inventory, listname)
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for i=1, inventory:get_size(listname) do
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local stack = inventory:get_stack(listname, i)
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if not stack:is_empty() then
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return i
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end
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end
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return nil
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end
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-- Returns true if item (itemstring or ItemStack) can be used as a furnace fuel.
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-- Returns false otherwise
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function mcl_util.is_fuel(item)
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return minetest.get_craft_result({method="fuel", width=1, items={item}}).time ~= 0
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end
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-- For a given position, returns a 2-tuple:
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-- 1st return value: true if pos is in void
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-- 2nd return value: true if it is in the deadly part of the void
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function mcl_util.is_in_void(pos)
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local void, void_deadly
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void = pos.y < mcl_vars.mg_overworld_min
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void_deadly = pos.y < mcl_vars.mg_overworld_min - 64
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return void, void_deadly
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end
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-- Here come 2 simple converter functions which are important for map generators and mob spawning
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-- Takes an Y coordinate as input and returns:
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-- 1) The corresponding Minecraft layer (can be nil if void)
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-- 2) The corresponding Minecraft dimension ("overworld", "nether" or "end") or "void" if it is in the void
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-- If the Y coordinate is not located in any dimension, it will return:
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-- nil, "void"
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function mcl_util.y_to_layer(y)
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if y >= mcl_vars.mg_overworld_min then
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return y - mcl_vars.mg_overworld_min, "overworld"
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else
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return nil, "void"
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end
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end
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-- Takes a Minecraft layer and a “dimension” name
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-- and returns the corresponding Y coordinate for
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-- MineClone 2.
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-- minecraft_dimension parameter is ignored at the moment
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-- TODO: Implement dimensions
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function mcl_util.layer_to_y(layer, minecraft_dimension)
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return layer + mcl_vars.mg_overworld_min
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end
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-- Returns a on_place function for plants
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-- * condition: function(pos, node)
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-- * A function which is called by the on_place function to check if the node can be placed
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-- * Must return true, if placement is allowed, false otherwise
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-- * pos, node: Position and node table of plant node
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function mcl_util.generate_on_place_plant_function(condition)
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return function(itemstack, placer, pointed_thing)
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if pointed_thing.type ~= "node" then
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-- no interaction possible with entities
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return itemstack
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end
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-- Call on_rightclick if the pointed node defines it
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local node = minetest.get_node(pointed_thing.under)
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if placer and not placer:get_player_control().sneak then
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if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
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return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
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end
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end
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local place_pos
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local def_under = minetest.registered_nodes[minetest.get_node(pointed_thing.under).name]
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local def_above = minetest.registered_nodes[minetest.get_node(pointed_thing.above).name]
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if def_under.buildable_to then
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place_pos = pointed_thing.under
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elseif def_above.buildable_to then
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place_pos = pointed_thing.above
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else
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return itemstack
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end
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-- Check placement rules
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if (condition(place_pos, node) == true) then
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local idef = itemstack:get_definition()
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local new_itemstack, success = minetest.item_place_node(itemstack, placer, pointed_thing)
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if success then
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if idef.sounds and idef.sounds.place then
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minetest.sound_play(idef.sounds.place, {pos=above, gain=1})
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end
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end
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itemstack = new_itemstack
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end
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return itemstack
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end
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end
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