469 lines
18 KiB
Lua
469 lines
18 KiB
Lua
DigtronLayout = {}
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DigtronLayout.__index = DigtronLayout
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local modpath_awards = minetest.get_modpath("awards")
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-------------------------------------------------------------------------
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-- Creation
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local get_node_image = function(pos, node)
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local node_image = {node=node, pos={x=pos.x, y=pos.y, z=pos.z}}
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local node_def = minetest.registered_nodes[node.name]
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node_image.paramtype2 = node_def.paramtype2
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local meta = minetest.get_meta(pos)
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node_image.meta = meta:to_table()
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if node_image.meta ~= nil and node_def._digtron_formspec ~= nil then
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node_image.meta.fields.formspec = node_def._digtron_formspec(pos, meta) -- causes formspec to be automatically upgraded whenever Digtron moves
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end
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-- Record what kind of thing we've got in a builder node so its facing can be rotated properly
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if minetest.get_item_group(node.name, "digtron") == 4 then
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local build_item = ""
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if node_image.meta.inventory.main then
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build_item = node_image.meta.inventory.main[1]
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end
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if build_item ~= "" then
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local build_item_def = minetest.registered_nodes[ItemStack(build_item):get_name()]
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if build_item_def ~= nil then
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node_image.build_item_paramtype2 = build_item_def.paramtype2
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end
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end
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end
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return node_image
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end
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function DigtronLayout.create(pos, player)
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local self = {}
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setmetatable(self, DigtronLayout)
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--initialize. We're assuming that the start position is a controller digtron, should be a safe assumption since only the controller node should call this
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self.traction = 0
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self.all = {}
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self.inventories = {}
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self.fuelstores = {}
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self.battery_holders = {} -- technic batteries
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self.power_connectors = {} -- technic power cable
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self.diggers = {}
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self.builders = {}
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self.auto_ejectors = {}
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self.extents = {}
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self.water_touching = false
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self.lava_touching = false
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self.protected = Pointset.create() -- if any nodes we look at are protected, make note of that. That way we don't need to keep re-testing protection state later.
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self.old_pos_pointset = Pointset.create() -- For tracking original location of nodes if we do transformations on the Digtron
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self.nodes_dug = Pointset.create() -- For tracking adjacent nodes that will have been dug by digger heads in future
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self.contains_protected_node = false -- used to indicate if at least one node in this digtron array is protected from the player.
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self.controller = {x=pos.x, y=pos.y, z=pos.z} --Make a deep copy of the pos parameter just in case the calling code wants to play silly buggers with it
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table.insert(self.all, get_node_image(pos, minetest.get_node(pos))) -- We never visit the source node, so insert it into the all table a priori. Revisit this design decision if a controller node is created that contains fuel or inventory or whatever.
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self.extents.max_x = pos.x
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self.extents.min_x = pos.x
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self.extents.max_y = pos.y
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self.extents.min_y = pos.y
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self.extents.max_z = pos.z
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self.extents.min_z = pos.z
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-- temporary pointsets used while searching
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local to_test = Pointset.create()
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local tested = Pointset.create()
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tested:set(pos.x, pos.y, pos.z, true)
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to_test:set(pos.x + 1, pos.y, pos.z, true)
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to_test:set(pos.x - 1, pos.y, pos.z, true)
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to_test:set(pos.x, pos.y + 1, pos.z, true)
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to_test:set(pos.x, pos.y - 1, pos.z, true)
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to_test:set(pos.x, pos.y, pos.z + 1, true)
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to_test:set(pos.x, pos.y, pos.z - 1, true)
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if minetest.is_protected(pos, player:get_player_name()) and not minetest.check_player_privs(player, "protection_bypass") then
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self.protected:set(pos.x, pos.y, pos.z, true)
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self.contains_protected_node = true
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end
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-- Do a loop on to_test positions, adding new to_test positions as we find digtron nodes. This is a flood fill operation
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-- that follows node faces (no diagonals)
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local testpos, _ = to_test:pop()
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while testpos ~= nil do
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tested:set(testpos.x, testpos.y, testpos.z, true) -- track nodes we've looked at to prevent infinite loops
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local node = minetest.get_node(testpos)
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if node.name == "ignore" then
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--buildtron array is next to unloaded nodes, too dangerous to do anything. Abort.
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self.all = nil
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return self
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end
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if minetest.get_item_group(node.name, "water") ~= 0 then
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self.water_touching = true
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elseif minetest.get_item_group(node.name, "lava") ~= 0 then
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self.lava_touching = true
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if digtron.config.lava_impassible then
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self.protected:set(testpos.x, testpos.y, testpos.z, true)
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end
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end
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local is_protected = false
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if minetest.is_protected(testpos, player:get_player_name()) and not minetest.check_player_privs(player, "protection_bypass") then
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self.protected:set(testpos.x, testpos.y, testpos.z, true)
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is_protected = true
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end
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local group_number = minetest.get_item_group(node.name, "digtron")
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if group_number > 0 then
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--found one. Add it to the digtrons output
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local node_image = get_node_image(testpos, node)
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table.insert(self.all, node_image)
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-- add a reference to this node's position to special node lists
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if group_number == 2 then
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table.insert(self.inventories, node_image)
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elseif group_number == 3 then
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table.insert(self.diggers, node_image)
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elseif group_number == 4 then
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table.insert(self.builders, node_image)
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elseif group_number == 5 then
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table.insert(self.fuelstores, node_image)
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elseif group_number == 6 then
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table.insert(self.inventories, node_image)
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table.insert(self.fuelstores, node_image)
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elseif group_number == 7 then
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table.insert(self.battery_holders, node_image)
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elseif group_number == 8 then
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table.insert(self.power_connectors, node_image)
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elseif group_number == 9 and node_image.meta.fields["autoeject"] == "true" then
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table.insert(self.auto_ejectors, node_image)
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end
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if is_protected then
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self.contains_protected_node = true
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end
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-- update extents
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self.extents.max_x = math.max(self.extents.max_x, testpos.x)
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self.extents.min_x = math.min(self.extents.min_x, testpos.x)
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self.extents.max_y = math.max(self.extents.max_y, testpos.y)
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self.extents.min_y = math.min(self.extents.min_y, testpos.y)
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self.extents.max_z = math.max(self.extents.max_z, testpos.z)
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self.extents.min_z = math.min(self.extents.min_z, testpos.z)
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--queue up potential new test points adjacent to this digtron node
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to_test:set_if_not_in(tested, testpos.x + 1, testpos.y, testpos.z, true)
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to_test:set_if_not_in(tested, testpos.x - 1, testpos.y, testpos.z, true)
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to_test:set_if_not_in(tested, testpos.x, testpos.y + 1, testpos.z, true)
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to_test:set_if_not_in(tested, testpos.x, testpos.y - 1, testpos.z, true)
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to_test:set_if_not_in(tested, testpos.x, testpos.y, testpos.z + 1, true)
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to_test:set_if_not_in(tested, testpos.x, testpos.y, testpos.z - 1, true)
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elseif not minetest.registered_nodes[node.name] or minetest.registered_nodes[node.name].buildable_to ~= true then
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-- Tracks whether the digtron is hovering in mid-air. If any part of the digtron array touches something solid it gains traction.
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-- Allowing unknown nodes to provide traction, since they're not buildable_to either
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self.traction = self.traction + 1
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end
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testpos, _ = to_test:pop()
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end
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digtron.award_layout(self, player:get_player_name()) -- hook for achievements mod
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return self
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end
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------------------------------------------------------------------------
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-- Rotation
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local facedir_rotate = {
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['x'] = {
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[-1] = {[0]=4, 5, 6, 7, 22, 23, 20, 21, 0, 1, 2, 3, 13, 14, 15, 12, 19, 16, 17, 18, 10, 11, 8, 9}, -- 270 degrees
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[1] = {[0]=8, 9, 10, 11, 0, 1, 2, 3, 22, 23, 20, 21, 15, 12, 13, 14, 17, 18, 19, 16, 6, 7, 4, 5}, -- 90 degrees
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},
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['y'] = {
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[-1] = {[0]=3, 0, 1, 2, 19, 16, 17, 18, 15, 12, 13, 14, 7, 4, 5, 6, 11, 8, 9, 10, 21, 22, 23, 20}, -- 270 degrees
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[1] = {[0]=1, 2, 3, 0, 13, 14, 15, 12, 17, 18, 19, 16, 9, 10, 11, 8, 5, 6, 7, 4, 23, 20, 21, 22}, -- 90 degrees
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},
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['z'] = {
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[-1] = {[0]=16, 17, 18, 19, 5, 6, 7, 4, 11, 8, 9, 10, 0, 1, 2, 3, 20, 21, 22, 23, 12, 13, 14, 15}, -- 270 degrees
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[1] = {[0]=12, 13, 14, 15, 7, 4, 5, 6, 9, 10, 11, 8, 20, 21, 22, 23, 0, 1, 2, 3, 16, 17, 18, 19}, -- 90 degrees
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}
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}
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local wallmounted_rotate = {
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['x'] = {
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[-1] = {[0]=4, 5, 2, 3, 1, 0}, -- 270 degrees
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[1] = {[0]=5, 4, 2, 3, 0, 1}, -- 90 degrees
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},
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['y'] = {
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[-1] = {[0]=0, 1, 4, 5, 3, 2}, -- 270 degrees
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[1] = {[0]=0, 1, 5, 4, 2, 3}, -- 90 degrees
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},
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['z'] = {
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[-1] = {[0]=3, 2, 0, 1, 4, 5}, -- 270 degrees
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[1] = {[0]=2, 3, 1, 0, 4, 5}, -- 90 degrees
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}
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}
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--90 degrees CW about x-axis: (x, y, z) -> (x, -z, y)
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--90 degrees CCW about x-axis: (x, y, z) -> (x, z, -y)
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--90 degrees CW about y-axis: (x, y, z) -> (-z, y, x)
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--90 degrees CCW about y-axis: (x, y, z) -> (z, y, -x)
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--90 degrees CW about z-axis: (x, y, z) -> (y, -x, z)
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--90 degrees CCW about z-axis: (x, y, z) -> (-y, x, z)
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local rotate_pos = function(axis, direction, pos)
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if axis == "x" then
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if direction < 0 then
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return {x= pos.x, y= -pos.z, z= pos.y}
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else
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return {x= pos.x, y= pos.z, z= -pos.y}
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end
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elseif axis == "y" then
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if direction < 0 then
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return {x= -pos.z, y= pos.y, z= pos.x}
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else
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return {x= pos.z, y= pos.y, z= -pos.x}
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end
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else
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if direction < 0 then
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return {x= -pos.y, y= pos.x, z= pos.z}
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else
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return {x= pos.y, y= -pos.x, z= pos.z}
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end
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end
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end
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local rotate_node_image = function(node_image, origin, axis, direction, old_pos_pointset)
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-- Facings
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if node_image.paramtype2 == "wallmounted" then
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node_image.node.param2 = wallmounted_rotate[axis][direction][node_image.node.param2]
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elseif node_image.paramtype2 == "facedir" then
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node_image.node.param2 = facedir_rotate[axis][direction][node_image.node.param2]
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end
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if node_image.build_item_paramtype2 == "wallmounted" then
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node_image.meta.fields.build_facing = wallmounted_rotate[axis][direction][tonumber(node_image.meta.fields.build_facing)]
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elseif node_image.build_item_paramtype2 == "facedir" then
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node_image.meta.fields.build_facing = facedir_rotate[axis][direction][tonumber(node_image.meta.fields.build_facing)]
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end
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node_image.meta.fields.waiting = nil -- If we're rotating a controller that's in the "waiting" state, clear it. Otherwise it may stick like that.
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-- record the old location so we can destroy the old node if the rotation operation is possible
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old_pos_pointset:set(node_image.pos.x, node_image.pos.y, node_image.pos.z, true)
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-- position in space relative to origin
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local pos = vector.subtract(node_image.pos, origin)
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pos = rotate_pos(axis, direction, pos)
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-- Move back to original reference frame
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node_image.pos = vector.add(pos, origin)
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return node_image
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end
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-- Rotates 90 degrees widdershins around the axis defined by facedir (which in this case is pointing out the front of the node, so it needs to be converted into an upward-pointing axis internally)
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function DigtronLayout.rotate_layout_image(self, facedir)
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-- To convert this into the direction the "top" of the axle node is pointing in:
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-- 0, 1, 2, 3 == (0,1,0)
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-- 4, 5, 6, 7 == (0,0,1)
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-- 8, 9, 10, 11 == (0,0,-1)
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-- 12, 13, 14, 15 == (1,0,0)
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-- 16, 17, 18, 19 == (-1,0,0)
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-- 20, 21, 22, 23== (0,-1,0)
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local top = {
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[0]={axis="y", dir=-1},
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{axis="z", dir=1},
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{axis="z", dir=-1},
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{axis="x", dir=1},
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{axis="x", dir=-1},
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{axis="y", dir=1},
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}
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local params = top[math.floor(facedir/4)]
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for k, node_image in pairs(self.all) do
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rotate_node_image(node_image, self.controller, params.axis, params.dir, self.old_pos_pointset)
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end
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return self
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end
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-----------------------------------------------------------------------------------------------
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-- Translation
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function DigtronLayout.move_layout_image(self, dir)
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local extents = self.extents
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extents.max_x = extents.max_x + dir.x
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extents.min_x = extents.min_x + dir.x
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extents.max_y = extents.max_y + dir.y
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extents.min_y = extents.min_y + dir.y
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extents.max_z = extents.max_z + dir.z
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extents.min_z = extents.min_z + dir.z
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for k, node_image in pairs(self.all) do
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self.old_pos_pointset:set(node_image.pos.x, node_image.pos.y, node_image.pos.z, true)
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node_image.pos = vector.add(node_image.pos, dir)
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self.nodes_dug:set(node_image.pos.x, node_image.pos.y, node_image.pos.z, false) -- we've moved a digtron node into this space, mark it so that we don't dig it.
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end
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end
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-----------------------------------------------------------------------------------------------
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-- Writing to world
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function DigtronLayout.can_write_layout_image(self)
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for k, node_image in pairs(self.all) do
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--check if we're moving into a protected node
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if self.protected:get(node_image.pos.x, node_image.pos.y, node_image.pos.z) then
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return false
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end
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-- check if the target node is buildable_to or is marked as part of the digtron that's moving
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if not (
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self.old_pos_pointset:get(node_image.pos.x, node_image.pos.y, node_image.pos.z)
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or minetest.registered_nodes[minetest.get_node(node_image.pos).name].buildable_to
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) then
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return false
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end
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end
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return true
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end
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-- We need to call on_dignode and on_placenode for dug and placed nodes,
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-- but that triggers falling nodes (sand and whatnot) and destroys Digtrons
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-- if done during mid-write. So we need to defer the calls until after the
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-- Digtron has been fully written.
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local node_callbacks = function(dug_nodes, placed_nodes, player)
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for _, dug_node in pairs(dug_nodes) do
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local old_pos = dug_node[1]
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local old_node = dug_node[2]
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local old_meta = dug_node[3]
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minetest.log("action", string.format("%s removes Digtron component %s at (%d, %d, %d)", player:get_player_name(), old_node.name, old_pos.x, old_pos.y, old_pos.z))
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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=old_pos.x, y=old_pos.y, z=old_pos.z}
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local oldnode_copy = {name=old_node.name, param1=old_node.param1, param2=old_node.param2}
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callback(pos_copy, oldnode_copy, digtron.fake_player)
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end
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local old_def = minetest.registered_nodes[old_node.name]
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if old_def ~= nil and old_def.after_dig_node ~= nil then
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old_def.after_dig_node(old_pos, old_node, old_meta, player)
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end
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end
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for _, placed_node in pairs(placed_nodes) do
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local new_pos = placed_node[1]
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local new_node = placed_node[2]
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local old_node = placed_node[3]
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minetest.log("action", string.format("%s adds Digtron component %s at (%d, %d, %d)", player:get_player_name(), new_node.name, new_pos.x, new_pos.y, new_pos.z))
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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 pos_copy = {x=new_pos.x, y=new_pos.y, z=new_pos.z}
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local oldnode_copy = {name=old_node.name, param1=old_node.param1, param2=old_node.param2}
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local newnode_copy = {name=new_node.name, param1=new_node.param1, param2=new_node.param2}
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callback(pos_copy, newnode_copy, digtron.fake_player, oldnode_copy)
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end
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local new_def = minetest.registered_nodes[new_node.name]
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if new_def ~= nil and new_def.after_place_node ~= nil then
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new_def.after_place_node(new_pos, player)
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end
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end
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end
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local set_node_with_retry = function(pos, node)
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local start_time = minetest.get_us_time()
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while not minetest.set_node(pos, node) do
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if minetest.get_us_time() - start_time > 1000000 then -- 1 second in useconds
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return false
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end
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end
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return true
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end
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local set_meta_with_retry = function(meta, meta_table)
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local start_time = minetest.get_us_time()
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while not meta:from_table(meta_table) do
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if minetest.get_us_time() - start_time > 1000000 then -- 1 second in useconds
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return false
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end
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end
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return true
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end
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function DigtronLayout.write_layout_image(self, player)
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local dug_nodes = {}
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local placed_nodes = {}
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-- destroy the old digtron
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local oldpos, _ = self.old_pos_pointset:pop()
|
|
while oldpos ~= nil do
|
|
local old_node = minetest.get_node(oldpos)
|
|
local old_meta = minetest.get_meta(oldpos)
|
|
|
|
if not set_node_with_retry(oldpos, {name="air"}) then
|
|
minetest.log("error", "DigtronLayout.write_layout_image failed to destroy old Digtron node, aborting write.")
|
|
return false
|
|
end
|
|
|
|
table.insert(dug_nodes, {oldpos, old_node, old_meta})
|
|
oldpos, _ = self.old_pos_pointset:pop()
|
|
end
|
|
|
|
-- create the new one
|
|
for k, node_image in pairs(self.all) do
|
|
local new_pos = node_image.pos
|
|
local new_node = node_image.node
|
|
local old_node = minetest.get_node(new_pos)
|
|
|
|
if not (set_node_with_retry(new_pos, new_node) and set_meta_with_retry(minetest.get_meta(new_pos), node_image.meta)) then
|
|
minetest.log("error", "DigtronLayout.write_layout_image failed to write a Digtron node, aborting write.")
|
|
return false
|
|
end
|
|
|
|
table.insert(placed_nodes, {new_pos, new_node, old_node})
|
|
end
|
|
|
|
-- fake_player will be passed to callbacks to prevent actual player from "taking the blame" for this action.
|
|
-- For example, the hunger mod shouldn't be making the player hungry when he moves Digtron.
|
|
digtron.fake_player:update(self.controller, player:get_player_name())
|
|
-- note that the actual player is still passed to the per-node after_place_node and after_dig_node, should they exist.
|
|
node_callbacks(dug_nodes, placed_nodes, player)
|
|
|
|
return true
|
|
end
|
|
|
|
|
|
---------------------------------------------------------------------------------------------
|
|
-- Serialization. Currently only serializes the data that is needed by the crate, upgrade this function if more is needed
|
|
|
|
function DigtronLayout.serialize(self)
|
|
-- serialize can't handle ItemStack objects, convert them to strings.
|
|
for _, node_image in pairs(self.all) do
|
|
for k, inv in pairs(node_image.meta.inventory) do
|
|
for index, item in pairs(inv) do
|
|
inv[index] = item:to_string()
|
|
end
|
|
end
|
|
end
|
|
|
|
return minetest.serialize({controller=self.controller, all=self.all})
|
|
end
|
|
|
|
function DigtronLayout.deserialize(layout_string)
|
|
local self = {}
|
|
setmetatable(self, DigtronLayout)
|
|
|
|
if not layout_string or layout_string == "" then
|
|
return nil
|
|
end
|
|
local deserialized_layout = minetest.deserialize(layout_string)
|
|
|
|
self.all = deserialized_layout.all
|
|
self.controller = deserialized_layout.controller
|
|
self.old_pos_pointset = Pointset.create() -- needed by the write_layout method, leave empty
|
|
|
|
return self
|
|
end
|