forked from VoxeLibre/VoxeLibre
606 lines
18 KiB
Lua
606 lines
18 KiB
Lua
mcl_util = {}
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-- Updates all values in t using values from to*.
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function table.update(t, ...)
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for _, to in ipairs{...} do
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for k,v in pairs(to) do
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t[k] = v
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end
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end
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return t
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end
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-- Updates nil values in t using values from to*.
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function table.update_nil(t, ...)
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for _, to in ipairs{...} do
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for k,v in pairs(to) do
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if t[k] == nil then
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t[k] = v
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end
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end
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end
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return t
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end
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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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minetest.is_creative_enabled(placer:get_player_name()),
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placer:get_player_control().sneak)
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return itemstack
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end
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-- Returns position of the neighbor of a double chest node
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-- or nil if node is invalid.
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-- This function assumes that the large chest is actually intact
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-- * pos: Position of the node to investigate
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-- * param2: param2 of that node
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-- * side: Which "half" the investigated node is. "left" or "right"
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function mcl_util.get_double_container_neighbor_pos(pos, param2, side)
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if side == "right" then
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if param2 == 0 then
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return {x=pos.x-1, y=pos.y, z=pos.z}
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elseif param2 == 1 then
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return {x=pos.x, y=pos.y, z=pos.z+1}
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elseif param2 == 2 then
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return {x=pos.x+1, y=pos.y, z=pos.z}
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elseif param2 == 3 then
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return {x=pos.x, y=pos.y, z=pos.z-1}
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end
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else
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if param2 == 0 then
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return {x=pos.x+1, y=pos.y, z=pos.z}
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elseif param2 == 1 then
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return {x=pos.x, y=pos.y, z=pos.z-1}
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elseif param2 == 2 then
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return {x=pos.x-1, y=pos.y, z=pos.z}
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elseif param2 == 3 then
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return {x=pos.x, y=pos.y, z=pos.z+1}
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end
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end
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end
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-- Iterates through all items in the given inventory and
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-- returns the slot of the first item which matches a condition.
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-- Returns nil if no item was found.
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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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--- 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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--- condition: Function which takes an itemstack and returns true if it matches the desired item condition.
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--- If set to nil, the slot of the first item stack will be taken unconditionally.
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-- dst_inventory and dst_list can also be nil if condition is nil.
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function mcl_util.get_eligible_transfer_item_slot(src_inventory, src_list, dst_inventory, dst_list, condition)
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local size = src_inventory:get_size(src_list)
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local stack
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for i=1, size do
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stack = src_inventory:get_stack(src_list, i)
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if not stack:is_empty() and (condition == nil or condition(stack, src_inventory, src_list, dst_inventory, dst_list)) 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 itemstack is a shulker box
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local function is_not_shulker_box(itemstack)
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local g = minetest.get_item_group(itemstack:get_name(), "shulker_box")
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return g == 0 or g == nil
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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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if not stack:is_empty() then
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local new_stack = ItemStack(stack)
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new_stack:set_count(1)
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if not destination_inventory:room_for_item(destination_list, new_stack) 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, new_stack)
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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. Performs a variety of high-level
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-- checks to prevent invalid transfers such as shulker boxes into shulker boxes
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--- source_pos: Position ({x,y,z}) of the node to take the item from
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--- destination_pos: Position ({x,y,z}) of the node to put the item into
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--- source_list (optional): List name of the source inventory from which to take the item. Default is normally "main"; "dst" for furnace
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--- source_stack_id (optional): The inventory position ID of the source inventory to take the item from (-1 for slot of the first valid item; -1 is default)
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--- destination_list (optional): List name of the destination inventory. Default is normally "main"; "src" for furnace
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-- Returns true on success and false on failure.
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function mcl_util.move_item_container(source_pos, destination_pos, source_list, source_stack_id, destination_list)
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local dpos = table.copy(destination_pos)
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local spos = table.copy(source_pos)
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local snode = minetest.get_node(spos)
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local dnode = minetest.get_node(dpos)
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local dctype = minetest.get_item_group(dnode.name, "container")
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local sctype = minetest.get_item_group(snode.name, "container")
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-- Container type 7 does not allow any movement
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if sctype == 7 then
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return false
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end
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-- Normalize double container by forcing to always use the left segment first
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local function normalize_double_container(pos, node, ctype)
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if ctype == 6 then
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pos = mcl_util.get_double_container_neighbor_pos(pos, node.param2, "right")
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if not pos then
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return false
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end
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node = minetest.get_node(pos)
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ctype = minetest.get_item_group(node.name, "container")
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-- The left segment seems incorrect? We better bail out!
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if ctype ~= 5 then
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return false
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end
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end
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return pos, node, ctype
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end
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spos, snode, sctype = normalize_double_container(spos, snode, sctype)
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dpos, dnode, dctype = normalize_double_container(dpos, dnode, dctype)
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if not spos or not dpos then return false end
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local smeta = minetest.get_meta(spos)
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local dmeta = minetest.get_meta(dpos)
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local sinv = smeta:get_inventory()
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local dinv = dmeta:get_inventory()
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-- Default source lists
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if not source_list then
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-- Main inventory for most container types
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if sctype == 2 or sctype == 3 or sctype == 5 or sctype == 6 or sctype == 7 then
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source_list = "main"
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-- Furnace: output
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elseif sctype == 4 then
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source_list = "dst"
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-- Unknown source container type. Bail out
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else
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return false
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end
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end
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-- Automatically select stack slot ID if set to automatic
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if not source_stack_id then
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source_stack_id = -1
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end
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if source_stack_id == -1 then
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local cond = nil
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-- Prevent shulker box inception
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if dctype == 3 then
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cond = is_not_shulker_box
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end
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source_stack_id = mcl_util.get_eligible_transfer_item_slot(sinv, source_list, dinv, dpos, cond)
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if not source_stack_id then
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-- Try again if source is a double container
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if sctype == 5 then
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spos = mcl_util.get_double_container_neighbor_pos(spos, snode.param2, "left")
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smeta = minetest.get_meta(spos)
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sinv = smeta:get_inventory()
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source_stack_id = mcl_util.get_eligible_transfer_item_slot(sinv, source_list, dinv, dpos, cond)
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if not source_stack_id then
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return false
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end
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else
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return false
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end
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end
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end
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-- Abort transfer if shulker box wants to go into shulker box
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if dctype == 3 then
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local stack = sinv:get_stack(source_list, source_stack_id)
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if stack and minetest.get_item_group(stack:get_name(), "shulker_box") == 1 then
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return false
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end
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end
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-- Container type 7 does not allow any placement
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if dctype == 7 then
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return false
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end
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-- If it's a container, put it into the container
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if dctype ~= 0 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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-- Main inventory for most container types
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if dctype == 2 or dctype == 3 or dctype == 5 or dctype == 6 or dctype == 7 then
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destination_list = "main"
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-- Furnace source slot
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elseif dctype == 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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-- Move item
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local ok = mcl_util.move_item(sinv, source_list, source_stack_id, dinv, destination_list)
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-- Try transfer to neighbor node if transfer failed and double container
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if not ok and dctype == 5 then
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dpos = mcl_util.get_double_container_neighbor_pos(dpos, dnode.param2, "left")
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dmeta = minetest.get_meta(dpos)
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dinv = dmeta:get_inventory()
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ok = mcl_util.move_item(sinv, source_list, source_stack_id, dinv, destination_list)
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end
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-- Update furnace
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if ok and dctype == 4 then
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-- Start furnace's timer function, it will sort out whether furnace can burn or not.
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minetest.get_node_timer(dpos):start(1.0)
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end
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return ok
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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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return mcl_util.get_eligible_transfer_item_slot(inventory, listname)
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end
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function mcl_util.drop_items_from_meta_container(listname)
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return function(pos, oldnode, oldmetadata)
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local meta = minetest.get_meta(pos)
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local meta2 = meta:to_table()
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if oldmetadata then
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meta:from_table(oldmetadata)
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end
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local inv = meta:get_inventory()
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for i = 1, inv:get_size(listname) do
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local stack = inv:get_stack(listname, i)
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if not stack:is_empty() then
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local p = vector.add(pos, vector.new(math.random() - 0.5, 0, math.random(0, 10)/10 - 0.5))
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minetest.add_item(p, stack)
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end
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end
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meta:from_table(meta2)
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end
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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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-- Returns a on_place function for plants
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-- * condition: function(pos, node, itemstack)
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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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-- * If it returns a string, placement is allowed, but will place this itemstring as a node instead
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-- * pos, node: Position and node table of plant node
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-- * itemstack: Itemstack to place
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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 not def_under or not def_above then
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return itemstack
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end
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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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local result, param2 = condition(place_pos, node, itemstack)
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if result == 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, param2)
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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=pointed_thing.above, gain=1}, true)
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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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-- adjust the y level of an object to the center of its collisionbox
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-- used to get the origin position of entity explosions
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function mcl_util.get_object_center(obj)
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local collisionbox = obj:get_properties().collisionbox
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local pos = obj:get_pos()
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local ymin = collisionbox[2]
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local ymax = collisionbox[5]
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pos.y = pos.y + (ymax - ymin) / 2.0
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return pos
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end
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function mcl_util.get_color(colorstr)
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local mc_color = mcl_colors[colorstr:upper()]
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if mc_color then
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colorstr = mc_color
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elseif #colorstr ~= 7 or colorstr:sub(1, 1) ~= "#" then
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return
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end
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local hex = tonumber(colorstr:sub(2, 7), 16)
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if hex then
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return colorstr, hex
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end
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end
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function mcl_util.call_on_rightclick(itemstack, player, pointed_thing)
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-- Call on_rightclick if the pointed node defines it
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if pointed_thing and pointed_thing.type == "node" then
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local pos = pointed_thing.under
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local node = minetest.get_node(pos)
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if player and not player:get_player_control().sneak then
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local nodedef = minetest.registered_nodes[node.name]
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local on_rightclick = nodedef and nodedef.on_rightclick
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if on_rightclick then
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return on_rightclick(pos, node, player, itemstack, pointed_thing) or itemstack
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end
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end
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end
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end
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function mcl_util.calculate_durability(itemstack)
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local unbreaking_level = mcl_enchanting.get_enchantment(itemstack, "unbreaking")
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local armor_uses = minetest.get_item_group(itemstack:get_name(), "mcl_armor_uses")
|
|
|
|
local uses
|
|
|
|
if armor_uses > 0 then
|
|
uses = armor_uses
|
|
if unbreaking_level > 0 then
|
|
uses = uses / (0.6 + 0.4 / (unbreaking_level + 1))
|
|
end
|
|
else
|
|
local def = itemstack:get_definition()
|
|
if def then
|
|
local fixed_uses = def._mcl_uses
|
|
if fixed_uses then
|
|
uses = fixed_uses
|
|
if unbreaking_level > 0 then
|
|
uses = uses * (unbreaking_level + 1)
|
|
end
|
|
end
|
|
end
|
|
|
|
local _, groupcap = next(itemstack:get_tool_capabilities().groupcaps)
|
|
uses = uses or (groupcap or {}).uses
|
|
end
|
|
|
|
return uses or 0
|
|
end
|
|
|
|
function mcl_util.use_item_durability(itemstack, n)
|
|
local uses = mcl_util.calculate_durability(itemstack)
|
|
itemstack:add_wear(65535 / uses * n)
|
|
end
|
|
|
|
function mcl_util.deal_damage(target, damage, mcl_reason)
|
|
local luaentity = target:get_luaentity()
|
|
|
|
if luaentity then
|
|
if luaentity.deal_damage then
|
|
luaentity:deal_damage(damage, mcl_reason or {type = "generic"})
|
|
return
|
|
elseif luaentity._cmi_is_mob then
|
|
-- local puncher = mcl_reason and mcl_reason.direct or target
|
|
-- target:punch(puncher, 1.0, {full_punch_interval = 1.0, damage_groups = {fleshy = damage}}, vector.direction(puncher:get_pos(), target:get_pos()), damage)
|
|
if luaentity.health > 0 then
|
|
luaentity.health = luaentity.health - damage
|
|
end
|
|
return
|
|
end
|
|
end
|
|
|
|
local hp = target:get_hp()
|
|
|
|
if hp > 0 then
|
|
target:set_hp(hp - damage, {_mcl_reason = mcl_reason})
|
|
end
|
|
end
|
|
|
|
function mcl_util.get_hp(obj)
|
|
local luaentity = obj:get_luaentity()
|
|
|
|
if luaentity and luaentity._cmi_is_mob then
|
|
return luaentity.health
|
|
else
|
|
return obj:get_hp()
|
|
end
|
|
end
|
|
|
|
function mcl_util.get_inventory(object, create)
|
|
if object:is_player() then
|
|
return object:get_inventory()
|
|
else
|
|
local luaentity = object:get_luaentity()
|
|
local inventory = luaentity.inventory
|
|
|
|
if create and not inventory and luaentity.create_inventory then
|
|
inventory = luaentity:create_inventory()
|
|
end
|
|
|
|
return inventory
|
|
end
|
|
end
|
|
|
|
function mcl_util.get_wielded_item(object)
|
|
if object:is_player() then
|
|
return object:get_wielded_item()
|
|
else
|
|
-- ToDo: implement getting wielditems from mobs as soon as mobs have wielditems
|
|
return ItemStack()
|
|
end
|
|
end
|
|
|
|
function mcl_util.get_object_name(object)
|
|
if object:is_player() then
|
|
return object:get_player_name()
|
|
else
|
|
local luaentity = object:get_luaentity()
|
|
|
|
if not luaentity then
|
|
return tostring(object)
|
|
end
|
|
|
|
return luaentity.nametag and luaentity.nametag ~= "" and luaentity.nametag or luaentity.description or luaentity.name
|
|
end
|
|
end
|
|
|
|
function mcl_util.replace_mob(obj, mob)
|
|
local rot = obj:get_yaw()
|
|
local pos = obj:get_pos()
|
|
obj:remove()
|
|
obj = minetest.add_entity(pos, mob)
|
|
obj:set_yaw(rot)
|
|
return obj
|
|
end
|
|
|
|
function mcl_util.get_pointed_thing(player, liquid)
|
|
local pos = vector.offset(player:get_pos(), 0, player:get_properties().eye_height, 0)
|
|
local look_dir = vector.multiply(player:get_look_dir(), 5)
|
|
local pos2 = vector.add(pos, look_dir)
|
|
local ray = minetest.raycast(pos, pos2, false, liquid)
|
|
|
|
if ray then
|
|
for pointed_thing in ray do
|
|
return pointed_thing
|
|
end
|
|
end
|
|
end
|