function pipeworks.tube_item(pos, item) error("obsolete pipeworks.tube_item() called; change caller to use pipeworks.tube_inject_item() instead") end function pipeworks.tube_inject_item(pos, start_pos, velocity, item) -- Take item in any format local stack = ItemStack(item) local obj = luaentity.add_entity(pos, "pipeworks:tubed_item") obj:set_item(stack:to_string()) obj.start_pos = vector.new(start_pos) obj:setvelocity(velocity) --obj:set_color("red") -- todo: this is test-only code return obj end -- adding two tube functions -- can_remove(pos,node,stack,dir) returns the maximum number of items of that stack that can be removed -- remove_items(pos,node,stack,dir,count) removes count items and returns them -- both optional w/ sensible defaults and fallback to normal allow_* function -- XXX: possibly change insert_object to insert_item local adjlist={{x=0,y=0,z=1},{x=0,y=0,z=-1},{x=0,y=1,z=0},{x=0,y=-1,z=0},{x=1,y=0,z=0},{x=-1,y=0,z=0}} function pipeworks.notvel(tbl, vel) local tbl2={} for _,val in ipairs(tbl) do if val.x ~= -vel.x or val.y ~= -vel.y or val.z ~= -vel.z then table.insert(tbl2, val) end end return tbl2 end local function go_next(pos, velocity, stack) local next_positions = {} local max_priority = 0 local cnode = minetest.get_node(pos) local cmeta = minetest.get_meta(pos) local can_go local speed = math.abs(velocity.x + velocity.y + velocity.z) if speed == 0 then speed = 1 end local vel = {x = velocity.x/speed, y = velocity.y/speed, z = velocity.z/speed,speed=speed} if speed >= 4.1 then speed = 4 elseif speed >= 1.1 then speed = speed - 0.1 else speed = 1 end vel.speed = speed if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack) else can_go = pipeworks.notvel(adjlist, vel) end for _, vect in ipairs(can_go) do local npos = vector.add(pos, vect) minetest.load_position(npos) local node = minetest.get_node(npos) local reg_node = minetest.registered_nodes[node.name] if reg_node then local tube_def = reg_node.tube local tubedevice = minetest.get_item_group(node.name, "tubedevice") local tube_priority = (tube_def and tube_def.priority) or 100 if tubedevice > 0 and tube_priority >= max_priority then if not tube_def or not tube_def.can_insert or tube_def.can_insert(npos, node, stack, vect) then if tube_priority > max_priority then max_priority = tube_priority next_positions = {} end next_positions[#next_positions + 1] = {pos = npos, vect = vect} end end end end if not next_positions[1] then return false, nil end local n = (cmeta:get_int("tubedir") % (#next_positions)) + 1 if pipeworks.enable_cyclic_mode then cmeta:set_int("tubedir", n) end local new_velocity = vector.multiply(next_positions[n].vect, vel.speed) return true, new_velocity end minetest.register_entity("pipeworks:tubed_item", { initial_properties = { hp_max = 1, physical = false, collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1}, visual = "wielditem", visual_size = {x = 0.15, y = 0.15}, textures = {""}, spritediv = {x = 1, y = 1}, initial_sprite_basepos = {x = 0, y = 0}, is_visible = false, }, physical_state = false, from_data = function(self, itemstring) local stack = ItemStack(itemstring) local itemtable = stack:to_table() local itemname = nil if itemtable then itemname = stack:to_table().name end local item_texture = nil local item_type = "" if minetest.registered_items[itemname] then item_texture = minetest.registered_items[itemname].inventory_image item_type = minetest.registered_items[itemname].type end self.object:set_properties({ is_visible = true, textures = {stack:get_name()} }) local def = stack:get_definition() self.object:setyaw((def and def.type == "node") and 0 or math.pi * 0.25) end, get_staticdata = luaentity.get_staticdata, on_activate = function(self, staticdata) -- Legacy code, should be replaced later by luaentity.on_activate if staticdata == "" or staticdata == nil then return end if staticdata == "toremove" then self.object:remove() return end local item = minetest.deserialize(staticdata) pipeworks.tube_inject_item(self.object:getpos(), item.start_pos, item.velocity, item.itemstring) self.object:remove() end, }) minetest.register_entity("pipeworks:color_entity", { initial_properties = { hp_max = 1, physical = false, collisionbox = {0.1, 0.1, 0.1, 0.1, 0.1, 0.1}, visual = "cube", visual_size = {x = 3.5, y = 3.5, z = 3.5}, -- todo: find correct size textures = {""}, is_visible = false, }, physical_state = false, from_data = function(self, color) local t = "pipeworks_color_"..color..".png" local prop = { is_visible = true, visual = "cube", textures = {t, t, t, t, t, t} -- todo: textures } self.object:set_properties(prop) end, get_staticdata = luaentity.get_staticdata, on_activate = luaentity.on_activate, }) luaentity.register_entity("pipeworks:tubed_item", { itemstring = '', item_entity = nil, color_entity = nil, color = nil, start_pos = nil, set_item = function(self, item) local itemstring = ItemStack(item):to_string() -- Accept any input format if self.itemstring == itemstring then return end if self.item_entity then self:remove_attached_entity(self.item_entity) end self.itemstring = itemstring self.item_entity = self:add_attached_entity("pipeworks:tubed_item", itemstring) end, set_color = function(self, color) if self.color == color then return end self.color = color if self.color_entity then self:remove_attached_entity(self.color_entity) end if color then self.color_entity = self:add_attached_entity("pipeworks:color_entity", color) else self.color_entity = nil end end, on_step = function(self, dtime) if self.start_pos == nil then local pos = self:getpos() self.start_pos = vector.round(pos) self:setpos(pos) end local pos = self:getpos() local stack = ItemStack(self.itemstring) local drop_pos local velocity = self:getvelocity() local moved = false local speed = math.abs(velocity.x + velocity.y + velocity.z) if speed == 0 then speed = 1 moved = true end local vel = {x = velocity.x / speed, y = velocity.y / speed, z = velocity.z / speed, speed = speed} if vector.distance(pos, self.start_pos) >= 1 then self.start_pos = vector.add(self.start_pos, vel) moved = true end minetest.load_position(self.start_pos) local node = minetest.get_node(self.start_pos) if moved and minetest.get_item_group(node.name, "tubedevice_receiver") == 1 then local leftover if minetest.registered_nodes[node.name].tube and minetest.registered_nodes[node.name].tube.insert_object then leftover = minetest.registered_nodes[node.name].tube.insert_object(self.start_pos, node, stack, vel) else leftover = stack end if leftover:is_empty() then self:remove() return end velocity = vector.multiply(velocity, -1) self:setvelocity(velocity) self:set_item(leftover:to_string()) return end if moved then local found_next, new_velocity = go_next(self.start_pos, velocity, stack) -- todo: color if not found_next then drop_pos = minetest.find_node_near(vector.add(self.start_pos, velocity), 1, "air") if drop_pos then minetest.item_drop(stack, "", drop_pos) self:remove() return end end if new_velocity and not vector.equals(velocity, new_velocity) then self:setpos(self.start_pos) self:setvelocity(new_velocity) end end end }) if minetest.get_modpath("mesecons_mvps") then mesecon.register_mvps_unmov("pipeworks:tubed_item") mesecon.register_mvps_unmov("pipeworks:color_entity") mesecon.register_on_mvps_move(function(moved_nodes) local moved = {} for _, n in ipairs(moved_nodes) do moved[minetest.hash_node_position(n.oldpos)] = vector.subtract(n.pos, n.oldpos) end for id, entity in pairs(luaentity.entities) do if entity.name == "pipeworks:tubed_item" then local pos = entity:getpos() local rpos = vector.round(pos) local dir = moved[minetest.hash_node_position(rpos)] if dir then entity:setpos(vector.add(pos, dir)) entity.start_pos = vector.add(entity.start_pos, dir) end end end end) end