129 lines
3.6 KiB
Lua
129 lines
3.6 KiB
Lua
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--[[
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screwdriver - Copyright (C) RealBadAngel, minetest developers
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public License
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as published by the Free Software Foundation; either version 2.1
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of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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MA 02111-1307 USA
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]]--
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local S = minetest.get_translator("screwdriver")
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screwdriver = {}
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local function nextrange(x, max)
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x = x + 1
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if x > max then
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x = 0
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end
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return x
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end
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screwdriver.ROTATE_FACE = 1
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screwdriver.ROTATE_AXIS = 2
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screwdriver.disallow = function(pos, node, user, mode, new_param2)
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return false
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end
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screwdriver.rotate_simple = function(pos, node, user, mode, new_param2)
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if mode ~= screwdriver.ROTATE_FACE then
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return false
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end
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end
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-- Handles rotation
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screwdriver.handler = function(itemstack, user, pointed_thing, mode, uses)
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if pointed_thing.type ~= "node" then
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return
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end
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local pos = pointed_thing.under
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if not boxes.can_edit(user) then
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return
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end
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if minetest.is_protected(pos, user:get_player_name()) then
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minetest.record_protection_violation(pos, user:get_player_name())
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return
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end
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local node = minetest.get_node(pos)
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local ndef = minetest.registered_nodes[node.name]
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-- verify node is facedir (expected to be rotatable)
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if not ndef or ndef.paramtype2 ~= "facedir" then
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return
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end
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-- Compute param2
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local rotationPart = node.param2 % 32 -- get first 4 bits
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local preservePart = node.param2 - rotationPart
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local axisdir = math.floor(rotationPart / 4)
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local rotation = rotationPart - axisdir * 4
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if mode == screwdriver.ROTATE_FACE then
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rotationPart = axisdir * 4 + nextrange(rotation, 3)
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elseif mode == screwdriver.ROTATE_AXIS then
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rotationPart = nextrange(axisdir, 5) * 4
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end
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local new_param2 = preservePart + rotationPart
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local should_rotate = true
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if ndef and ndef.on_rotate then
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-- Node provides a handler, so let the handler decide instead if the node can be rotated
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-- Copy pos and node because callback can modify it
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local result = ndef.on_rotate(vector.new(pos),
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{name = node.name, param1 = node.param1, param2 = node.param2},
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user, mode, new_param2)
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if result == false then -- Disallow rotation
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return
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elseif result == true then
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should_rotate = false
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end
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else
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if not ndef or not ndef.paramtype2 == "facedir" or
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ndef.on_rotate == false or
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(ndef.drawtype == "nodebox" and
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not ndef.node_box.type == "fixed") or
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node.param2 == nil then
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return
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end
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if ndef.can_dig and not ndef.can_dig(pos, user) then
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return
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end
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end
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if should_rotate then
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node.param2 = new_param2
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minetest.swap_node(pos, node)
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end
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return itemstack
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end
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-- Screwdriver
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minetest.register_tool("screwdriver:screwdriver", {
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description = S("Screwdriver").."\n"..S("Left-click rotates face").."\n"..S("Right-click rotates axis"),
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inventory_image = "screwdriver.png",
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on_use = function(itemstack, user, pointed_thing)
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screwdriver.handler(itemstack, user, pointed_thing, screwdriver.ROTATE_FACE, 200)
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return itemstack
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end,
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on_place = function(itemstack, user, pointed_thing)
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screwdriver.handler(itemstack, user, pointed_thing, screwdriver.ROTATE_AXIS, 200)
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return itemstack
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end,
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})
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