From b3d1339a76d426b6de8c355419050125b6ce4422 Mon Sep 17 00:00:00 2001 From: Treer Date: Thu, 4 Jul 2019 21:44:30 +1000 Subject: [PATCH] Allow two or more portal types to be made with the same frame material (provided they are different sized portals) Removes direct references to the registered_portals table --- init.lua | 129 +++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 83 insertions(+), 46 deletions(-) diff --git a/init.lua b/init.lua index 8162a72..9b42c2b 100644 --- a/init.lua +++ b/init.lua @@ -130,7 +130,7 @@ local TraditionalPortalShape = { local p2 if orientation == 0 then - p2 = {x = p1.x + self.size.x - 1, y = p1.y + self.size.y - 1, z = p1.z } + p2 = {x = p1.x + self.size.x - 1, y = p1.y + self.size.y - 1, z = p1.z } else p2 = {x = p1.x, y = p1.y + self.size.y - 1, z = p1.z + self.size.x - 1} end @@ -233,10 +233,9 @@ local TraditionalPortalShape = { --=====================================================-- - local registered_portals = { - -- todo: switch to lookup by name, ignite_portal can scan all registered portals - ["default:obsidian"] = { + ["netherportal"] = { + name = "netherportal", shape = TraditionalPortalShape, wormhole_node_name = "nether:portal", wormhole_node_color = 0, @@ -293,6 +292,40 @@ local function get_orientation_from_param2(param2) return param2 * 90 end +-- Combining frame_node_name, p1, and p2 will always be enough to uniquely identify a portal_defintion +-- WITHOUT needing to inspect the world. register_portal() will enforce this. +-- This function does not require the portal to be in a loaded chunk. +-- Returns nil if no portal_defintion matches the arguments +local function get_portal_defintion(frame_node_name, p1, p2) + + local size = vector.add(vector.subtract(p2, p1), 1) + local rotated_size = {x = size.z, y = size.y, z = size.x} + + for _, portal_def in pairs(registered_portals) do + if portal_def.frame_node_name == frame_node_name then + if vector.equals(size, portal_def.shape.size) or vector.equals(rotated_size, portal_def.shape.size) then + return portal_def + end + end + end + return nil +end + +-- Returns a list of all portal_defintions with a frame made of frame_node_name. +-- Ideally no two portal types will be built from the same frame material so this call might be enough +-- to uniquely identify a portal_defintion without needing to inspect the world, HOWEVER we shouldn't +-- cramp anyone's style and prohibit non-nether use of obsidian to make portals, so it returns a list. +-- If the list contains more than one item then routines like ignite_portal() will have to search twice +-- for a portal and take twice the CPU. +local function list_portal_definitions_for_frame_node(frame_node_name) + local result = {} + for _, portal_def in pairs(registered_portals) do + if portal_def.frame_node_name == frame_node_name then table.insert(result, portal_def) end + end + return result +end + + local extinguish_portal -- the function will be assigned to this further down, rather than having to define the function before other functions can use it. local function set_portal_metadata(portal_definition, anchorPos, orientation, destination_wormholePos, ignite) @@ -508,7 +541,8 @@ local function volume_is_natural(minp, maxp) local nodedef = minetest.registered_nodes[name] if not nodedef.is_ground_content then -- trees are natural but not "ground content" - if nodedef.groups == nil or (nodedef.groups.tree == nil and nodedef.groups.leaves == nil) then + local node_groups = nodedef.groups + if node_groups == nil or (node_groups.tree == nil and node_groups.leaves == nil) then return false end end @@ -630,39 +664,43 @@ local function ignite_portal(ignition_pos) local ignition_node_name = minetest.get_node(ignition_pos).name -- find which sort of portals are made from the node that was clicked on - local portal_definition = registered_portals[ignition_node_name] - if portal_definition == nil then - return false -- no portals are made from the node at ignition_pos - end + local portal_definition_list = list_portal_definitions_for_frame_node(ignition_node_name) - -- check it was a portal frame that the player is trying to ignite - local anchorPos, orientation, is_ignited = is_portal_frame(portal_definition, ignition_pos) - if anchorPos == nil then - if DEBUG then minetest.chat_send_all("No portal frame found at " .. minetest.pos_to_string(ignition_pos)) end - return false -- no portal is here - elseif is_ignited then - if DEBUG then - local meta = minetest.get_meta(ignition_pos) - if meta ~= nil then minetest.chat_send_all("This portal links to " .. meta:get_string("target") .. ". p1=" .. meta:get_string("p1") .. " p2=" .. meta:get_string("p2")) end + for _, portal_definition in ipairs(portal_definition_list) do + local continue = false + + -- check it was a portal frame that the player is trying to ignite + local anchorPos, orientation, is_ignited = is_portal_frame(portal_definition, ignition_pos) + if anchorPos == nil then + if DEBUG then minetest.chat_send_all("No " .. portal_definition.name .. " portal frame found at " .. minetest.pos_to_string(ignition_pos)) end + continue = true -- no portal is here, but perhaps there more than one portal type we need to search for + elseif is_ignited then + if DEBUG then + local meta = minetest.get_meta(ignition_pos) + if meta ~= nil then minetest.chat_send_all("This portal links to " .. meta:get_string("target") .. ". p1=" .. meta:get_string("p1") .. " p2=" .. meta:get_string("p2")) end + end + return false -- portal is already ignited + end + + if continue == false then + if DEBUG then minetest.chat_send_all("Found portal frame. Looked at " .. minetest.pos_to_string(ignition_pos) .. ", found at " .. minetest.pos_to_string(anchorPos) .. " orientation " .. orientation) end + + -- pick a destination + local destination_wormholePos = portal_definition.shape.get_wormholePos_from_anchorPos(anchorPos, orientation) + if anchorPos.y < NETHER_DEPTH then + destination_wormholePos.y = find_surface_target_y(portal_definition, destination_wormholePos.x, destination_wormholePos.z) + else + local start_y = NETHER_DEPTH - math.random(500, 1500) -- Search start + destination_wormholePos.y = find_nether_target_y(destination_wormholePos.x, destination_wormholePos.z, start_y) + end + if DEBUG then minetest.chat_send_all("Destinaton set to " .. minetest.pos_to_string(destination_wormholePos)) end + + -- ignition/BURN_BABY_BURN + set_portal_metadata_and_ignite(portal_definition, anchorPos, orientation, destination_wormholePos) + + return true end - return false -- portal is already ignited end - if DEBUG then minetest.chat_send_all("Found portal frame. Looked at " .. minetest.pos_to_string(ignition_pos) .. ", found at " .. minetest.pos_to_string(anchorPos) .. " orientation " .. orientation) end - - -- pick a destination - local destination_wormholePos = portal_definition.shape.get_wormholePos_from_anchorPos(anchorPos, orientation) - if anchorPos.y < NETHER_DEPTH then - destination_wormholePos.y = find_surface_target_y(portal_definition, destination_wormholePos.x, destination_wormholePos.z) - else - local start_y = NETHER_DEPTH - math.random(500, 1500) -- Search start - destination_wormholePos.y = find_nether_target_y(destination_wormholePos.x, destination_wormholePos.z, start_y) - end - if DEBUG then minetest.chat_send_all("Destinaton set to " .. minetest.pos_to_string(destination_wormholePos)) end - - -- ignition/BURN_BABY_BURN - set_portal_metadata_and_ignite(portal_definition, anchorPos, orientation, destination_wormholePos) - - return true end @@ -672,23 +710,22 @@ extinguish_portal = function(pos, node_name) -- assigned rather than declared be -- mesecons seems to invoke action_off() 6 times every time you place a block? if DEBUG then minetest.chat_send_all("extinguish_portal" .. minetest.pos_to_string(pos) .. " " .. node_name) end - -- find which sort of portals are made from the node that was clicked on - local portal_definition = registered_portals[node_name] - if portal_definition == nil then - minetest.log("error", "extinguish_portal() invoked on " .. node_name .. " but no registered portal is constructed from " .. node_name) - return false -- no portal frames are made from this type of node - end - local frame_node_name = portal_definition.frame_node_name - local wormhole_node_name = portal_definition.wormhole_node_name - local meta = minetest.get_meta(pos) local p1 = minetest.string_to_pos(meta:get_string("p1")) local p2 = minetest.string_to_pos(meta:get_string("p2")) local target = minetest.string_to_pos(meta:get_string("target")) - if not p1 or not p2 then + if p1 == nil or p2 == nil then return end + local portal_definition = get_portal_defintion(node_name, p1, p2) + if portal_definition == nil then + minetest.log("error", "extinguish_portal() invoked on " .. node_name .. " but no registered portal is constructed from " .. node_name) + return -- no portal frames are made from this type of node + end + local frame_node_name = portal_definition.frame_node_name + local wormhole_node_name = portal_definition.wormhole_node_name + minetest.get_node_timer(get_timerPos_from_p1_and_p2(p1, p2)):stop() for x = p1.x, p2.x do @@ -872,7 +909,7 @@ function run_wormhole(pos, time_elapsed) if p1 ~= nil and p2 ~= nil then -- look up the portal shape by what it's built from, so we know where the wormhole nodes will be located if frame_node_name == nil then frame_node_name = minetest.get_node(pos).name end -- pos should be a frame node - portal_definition = registered_portals[frame_node_name] + portal_definition = get_portal_defintion(frame_node_name, p1, p2) if portal_definition == nil then minetest.log("error", "No portal with a \"" .. frame_node_name .. "\" frame is registered. run_wormhole" .. minetest.pos_to_string(pos) .. " was invoked but that location contains \"" .. frame_node_name .. "\"") else