456 lines
12 KiB
Lua
456 lines
12 KiB
Lua
-- Minetest: builtin/item.lua
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--
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-- Item definition helpers
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--
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function minetest.inventorycube(img1, img2, img3)
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img2 = img2 or img1
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img3 = img3 or img1
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return "[inventorycube"
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.. "{" .. img1:gsub("%^", "&")
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.. "{" .. img2:gsub("%^", "&")
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.. "{" .. img3:gsub("%^", "&")
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end
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function minetest.get_pointed_thing_position(pointed_thing, above)
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if pointed_thing.type == "node" then
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if above then
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-- The position where a node would be placed
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return pointed_thing.above
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else
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-- The position where a node would be dug
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return pointed_thing.under
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end
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elseif pointed_thing.type == "object" then
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obj = pointed_thing.ref
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if obj ~= nil then
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return obj:getpos()
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else
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return nil
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end
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else
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return nil
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end
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end
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function minetest.dir_to_facedir(dir)
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if math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 3
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else
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return 1
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end
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else
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if dir.z < 0 then
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return 2
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else
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return 0
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end
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end
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end
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function minetest.dir_to_wallmounted(dir)
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if math.abs(dir.y) > math.max(math.abs(dir.x), math.abs(dir.z)) then
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if dir.y < 0 then
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return 1
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else
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return 0
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end
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elseif math.abs(dir.x) > math.abs(dir.z) then
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if dir.x < 0 then
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return 3
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else
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return 2
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end
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else
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if dir.z < 0 then
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return 5
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else
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return 4
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end
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end
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end
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function minetest.get_node_drops(nodename, toolname)
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local drop = ItemStack({name=nodename}):get_definition().drop
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if drop == nil then
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-- default drop
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return {ItemStack({name=nodename})}
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elseif type(drop) == "string" then
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-- itemstring drop
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return {ItemStack(drop)}
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elseif drop.items == nil then
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-- drop = {} to disable default drop
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return {}
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end
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-- Extended drop table
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local got_items = {}
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local got_count = 0
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local _, item, tool
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for _, item in ipairs(drop.items) do
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local good_rarity = true
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local good_tool = true
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if item.rarity ~= nil then
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good_rarity = item.rarity < 1 or math.random(item.rarity) == 1
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end
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if item.tools ~= nil then
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good_tool = false
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for _, tool in ipairs(item.tools) do
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if tool:sub(1, 1) == '~' then
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good_tool = toolname:find(tool:sub(2)) ~= nil
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else
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good_tool = toolname == tool
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end
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if good_tool then
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break
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end
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end
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end
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if good_rarity and good_tool then
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got_count = got_count + 1
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for _, add_item in ipairs(item.items) do
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got_items[#got_items+1] = add_item
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end
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if drop.max_items ~= nil and got_count == drop.max_items then
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break
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end
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end
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end
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return got_items
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end
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function minetest.item_place_node(itemstack, placer, pointed_thing)
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local item = itemstack:peek_item()
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local def = itemstack:get_definition()
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if def.type ~= "node" or pointed_thing.type ~= "node" then
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return itemstack
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end
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local under = pointed_thing.under
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local oldnode_under = minetest.env:get_node(under)
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local olddef_under = ItemStack({name=oldnode_under.name}):get_definition()
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olddef_under = olddef_under or minetest.nodedef_default
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local above = pointed_thing.above
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local oldnode_above = minetest.env:get_node(above)
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local olddef_above = ItemStack({name=oldnode_above.name}):get_definition()
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olddef_above = olddef_above or minetest.nodedef_default
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if not olddef_above.buildable_to and not olddef_under.buildable_to then
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minetest.log("info", placer:get_player_name() .. " tried to place"
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.. " node in invalid position " .. minetest.pos_to_string(above)
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.. ", replacing " .. oldnode_above.name)
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return
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end
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-- Place above pointed node
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local place_to = {x = above.x, y = above.y, z = above.z}
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-- If node under is buildable_to, place into it instead (eg. snow)
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if olddef_under.buildable_to then
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minetest.log("info", "node under is buildable to")
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place_to = {x = under.x, y = under.y, z = under.z}
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end
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minetest.log("action", placer:get_player_name() .. " places node "
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.. def.name .. " at " .. minetest.pos_to_string(place_to))
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local oldnode = minetest.env:get_node(place_to)
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local newnode = {name = def.name, param1 = 0, param2 = 0}
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-- Calculate direction for wall mounted stuff like torches and signs
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if def.paramtype2 == 'wallmounted' then
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local dir = {
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x = under.x - above.x,
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y = under.y - above.y,
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z = under.z - above.z
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}
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newnode.param2 = minetest.dir_to_wallmounted(dir)
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-- Calculate the direction for furnaces and chests and stuff
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elseif def.paramtype2 == 'facedir' then
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local placer_pos = placer:getpos()
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if placer_pos then
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local dir = {
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x = above.x - placer_pos.x,
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y = above.y - placer_pos.y,
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z = above.z - placer_pos.z
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}
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newnode.param2 = minetest.dir_to_facedir(dir)
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minetest.log("action", "facedir: " .. newnode.param2)
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end
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end
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-- Add node and update
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minetest.env:add_node(place_to, newnode)
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-- Run callback
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if def.after_place_node then
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-- Copy place_to because callback can modify it
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local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
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def.after_place_node(place_to_copy, placer)
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end
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_placenodes) do
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-- Copy pos and node because callback can modify them
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local place_to_copy = {x=place_to.x, y=place_to.y, z=place_to.z}
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local newnode_copy = {name=newnode.name, param1=newnode.param1, param2=newnode.param2}
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local oldnode_copy = {name=oldnode.name, param1=oldnode.param1, param2=oldnode.param2}
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callback(place_to_copy, newnode_copy, placer, oldnode_copy)
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end
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itemstack:take_item()
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return itemstack
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end
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function minetest.item_place_object(itemstack, placer, pointed_thing)
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local pos = minetest.get_pointed_thing_position(pointed_thing, true)
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if pos ~= nil then
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local item = itemstack:take_item()
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minetest.env:add_item(pos, item)
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end
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return itemstack
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end
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function minetest.item_place(itemstack, placer, pointed_thing)
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if itemstack:get_definition().type == "node" then
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return minetest.item_place_node(itemstack, placer, pointed_thing)
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else
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return minetest.item_place_object(itemstack, placer, pointed_thing)
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end
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end
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function minetest.item_drop(itemstack, dropper, pos)
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if dropper.get_player_name then
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local v = dropper:get_look_dir()
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local p = {x=pos.x+v.x, y=pos.y+1.5+v.y, z=pos.z+v.z}
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local obj = minetest.env:add_item(p, itemstack)
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if obj then
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v.x = v.x*2
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v.y = v.y*2 + 1
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v.z = v.z*2
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obj:setvelocity(v)
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end
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else
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minetest.env:add_item(pos, itemstack)
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end
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return ""
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end
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function minetest.item_eat(hp_change, replace_with_item)
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return function(itemstack, user, pointed_thing) -- closure
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if itemstack:take_item() ~= nil then
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user:set_hp(user:get_hp() + hp_change)
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itemstack:add_item(replace_with_item) -- note: replace_with_item is optional
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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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function minetest.node_punch(pos, node, puncher)
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_punchnodes) do
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-- Copy pos and node because callback can modify them
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local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
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local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
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callback(pos_copy, node_copy, puncher)
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end
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end
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function minetest.handle_node_drops(pos, drops, digger)
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-- Add dropped items to object's inventory
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if digger:get_inventory() then
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local _, dropped_item
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for _, dropped_item in ipairs(drops) do
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digger:get_inventory():add_item("main", dropped_item)
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end
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end
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end
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function minetest.node_dig(pos, node, digger)
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minetest.debug("node_dig")
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local def = ItemStack({name=node.name}):get_definition()
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-- Check if def ~= 0 because we always want to be able to remove unknown nodes
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if #def ~= 0 and not def.diggable or (def.can_dig and not def.can_dig(pos,digger)) then
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minetest.debug("not diggable")
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minetest.log("info", digger:get_player_name() .. " tried to dig "
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.. node.name .. " which is not diggable "
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.. minetest.pos_to_string(pos))
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return
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end
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minetest.log('action', digger:get_player_name() .. " digs "
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.. node.name .. " at " .. minetest.pos_to_string(pos))
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local wielded = digger:get_wielded_item()
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local drops = minetest.get_node_drops(node.name, wielded:get_name())
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-- Wear out tool
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local tp = wielded:get_tool_capabilities()
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local dp = minetest.get_dig_params(def.groups, tp)
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wielded:add_wear(dp.wear)
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digger:set_wielded_item(wielded)
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-- Handle drops
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minetest.handle_node_drops(pos, drops, digger)
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local oldmetadata = nil
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if def.after_dig_node then
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oldmetadata = minetest.env:get_meta(pos):to_table()
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end
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-- Remove node and update
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minetest.env:remove_node(pos)
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-- Run callback
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if def.after_dig_node then
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-- Copy pos and node because callback can modify them
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local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
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local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
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def.after_dig_node(pos_copy, node_copy, oldmetadata, digger)
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end
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-- Run script hook
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local _, callback
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for _, callback in ipairs(minetest.registered_on_dignodes) do
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-- Copy pos and node because callback can modify them
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local pos_copy = {x=pos.x, y=pos.y, z=pos.z}
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local node_copy = {name=node.name, param1=node.param1, param2=node.param2}
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callback(pos_copy, node_copy, digger)
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end
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end
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-- This is used to allow mods to redefine minetest.item_place and so on
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-- NOTE: This is not the preferred way. Preferred way is to provide enough
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-- callbacks to not require redefining global functions. -celeron55
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local function redef_wrapper(table, name)
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return function(...)
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return table[name](...)
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end
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end
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--
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-- Item definition defaults
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--
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minetest.nodedef_default = {
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-- Item properties
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type="node",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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usable = false,
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liquids_pointable = false,
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tool_capabilities = nil,
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node_placement_prediction = nil,
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-- Interaction callbacks
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on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
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on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
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on_use = nil,
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can_dig = nil,
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on_punch = redef_wrapper(minetest, 'node_punch'), -- minetest.node_punch
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on_dig = redef_wrapper(minetest, 'node_dig'), -- minetest.node_dig
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on_receive_fields = nil,
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on_metadata_inventory_move = minetest.node_metadata_inventory_move_allow_all,
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on_metadata_inventory_offer = minetest.node_metadata_inventory_offer_allow_all,
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on_metadata_inventory_take = minetest.node_metadata_inventory_take_allow_all,
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-- Node properties
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drawtype = "normal",
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visual_scale = 1.0,
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-- Don't define these because otherwise the old tile_images and
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-- special_materials wouldn't be read
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--tiles ={""},
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--special_tiles = {
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-- {name="", backface_culling=true},
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-- {name="", backface_culling=true},
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--},
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alpha = 255,
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post_effect_color = {a=0, r=0, g=0, b=0},
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paramtype = "none",
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paramtype2 = "none",
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is_ground_content = false,
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sunlight_propagates = false,
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walkable = true,
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pointable = true,
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diggable = true,
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climbable = false,
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buildable_to = false,
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liquidtype = "none",
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liquid_alternative_flowing = "",
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liquid_alternative_source = "",
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liquid_viscosity = 0,
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light_source = 0,
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damage_per_second = 0,
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selection_box = {type="regular"},
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legacy_facedir_simple = false,
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legacy_wallmounted = false,
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}
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minetest.craftitemdef_default = {
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type="craft",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
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on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
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on_use = nil,
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}
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minetest.tooldef_default = {
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type="tool",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 1,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = redef_wrapper(minetest, 'item_place'), -- minetest.item_place
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on_drop = redef_wrapper(minetest, 'item_drop'), -- minetest.item_drop
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on_use = nil,
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}
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minetest.noneitemdef_default = { -- This is used for the hand and unknown items
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type="none",
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-- name intentionally not defined here
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description = "",
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groups = {},
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inventory_image = "",
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wield_image = "",
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wield_scale = {x=1,y=1,z=1},
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stack_max = 99,
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liquids_pointable = false,
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tool_capabilities = nil,
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-- Interaction callbacks
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on_place = nil,
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on_drop = nil,
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on_use = nil,
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}
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