From ec11b73dc332a686313354d976c6815fe21259ab Mon Sep 17 00:00:00 2001 From: kay27 Date: Wed, 17 Mar 2021 04:09:08 +0400 Subject: [PATCH] Implement optimized Nether portals --- mods/CORE/mcl_init/init.lua | 14 +- mods/ENTITIES/mcl_mobs/api.lua | 2 +- .../mcl_farming_pumpkin_face_preview.png | Bin 240 -> 363 bytes mods/ITEMS/mcl_portals/mod.conf | 4 + mods/ITEMS/mcl_portals/portal_nether.lua | 926 ++++++++---------- 5 files changed, 402 insertions(+), 544 deletions(-) diff --git a/mods/CORE/mcl_init/init.lua b/mods/CORE/mcl_init/init.lua index 884ebfae..ba8986ad 100644 --- a/mods/CORE/mcl_init/init.lua +++ b/mods/CORE/mcl_init/init.lua @@ -33,18 +33,18 @@ mcl_vars.MAP_BLOCKSIZE = math.max(1, core.MAP_BLOCKSIZE or 16) mcl_vars.mapgen_limit = math.max(1, tonumber(minetest.get_mapgen_setting("mapgen_limit")) or 31000) mcl_vars.MAX_MAP_GENERATION_LIMIT = math.max(1, core.MAX_MAP_GENERATION_LIMIT or 31000) local central_chunk_offset = -math.floor(mcl_vars.chunksize / 2) -local chunk_size_in_nodes = mcl_vars.chunksize * mcl_vars.MAP_BLOCKSIZE +mcl_vars.chunk_size_in_nodes = mcl_vars.chunksize * mcl_vars.MAP_BLOCKSIZE local central_chunk_min_pos = central_chunk_offset * mcl_vars.MAP_BLOCKSIZE -local central_chunk_max_pos = central_chunk_min_pos + chunk_size_in_nodes - 1 +local central_chunk_max_pos = central_chunk_min_pos + mcl_vars.chunk_size_in_nodes - 1 local ccfmin = central_chunk_min_pos - mcl_vars.MAP_BLOCKSIZE -- Fullminp/fullmaxp of central chunk, in nodes local ccfmax = central_chunk_max_pos + mcl_vars.MAP_BLOCKSIZE local mapgen_limit_b = math.floor(math.min(mcl_vars.mapgen_limit, mcl_vars.MAX_MAP_GENERATION_LIMIT) / mcl_vars.MAP_BLOCKSIZE) local mapgen_limit_min = -mapgen_limit_b * mcl_vars.MAP_BLOCKSIZE local mapgen_limit_max = (mapgen_limit_b + 1) * mcl_vars.MAP_BLOCKSIZE - 1 -local numcmin = math.max(math.floor((ccfmin - mapgen_limit_min) / chunk_size_in_nodes), 0) -- Number of complete chunks from central chunk -local numcmax = math.max(math.floor((mapgen_limit_max - ccfmax) / chunk_size_in_nodes), 0) -- fullminp/fullmaxp to effective mapgen limits. -mcl_vars.mapgen_edge_min = central_chunk_min_pos - numcmin * chunk_size_in_nodes -mcl_vars.mapgen_edge_max = central_chunk_max_pos + numcmax * chunk_size_in_nodes +local numcmin = math.max(math.floor((ccfmin - mapgen_limit_min) / mcl_vars.chunk_size_in_nodes), 0) -- Number of complete chunks from central chunk +local numcmax = math.max(math.floor((mapgen_limit_max - ccfmax) / mcl_vars.chunk_size_in_nodes), 0) -- fullminp/fullmaxp to effective mapgen limits. +mcl_vars.mapgen_edge_min = central_chunk_min_pos - numcmin * mcl_vars.chunk_size_in_nodes +mcl_vars.mapgen_edge_max = central_chunk_max_pos + numcmax * mcl_vars.chunk_size_in_nodes local function coordinate_to_block(x) return math.floor(x / mcl_vars.MAP_BLOCKSIZE) @@ -70,7 +70,7 @@ function mcl_vars.pos_to_chunk(pos) } end -local k_positive = math.ceil(mcl_vars.MAX_MAP_GENERATION_LIMIT / chunk_size_in_nodes) +local k_positive = math.ceil(mcl_vars.MAX_MAP_GENERATION_LIMIT / mcl_vars.chunk_size_in_nodes) local k_positive_z = k_positive * 2 local k_positive_y = k_positive_z * k_positive_z diff --git a/mods/ENTITIES/mcl_mobs/api.lua b/mods/ENTITIES/mcl_mobs/api.lua index 6d74d9d7..444accde 100644 --- a/mods/ENTITIES/mcl_mobs/api.lua +++ b/mods/ENTITIES/mcl_mobs/api.lua @@ -2821,7 +2821,7 @@ local falling = function(self, pos) end if mcl_portals ~= nil then - if mcl_portals.nether_portal_cooloff[self.object] then + if mcl_portals.nether_portal_cooloff(self.object) then return false -- mob has teleported through Nether portal - it's 99% not falling end end diff --git a/mods/ITEMS/mcl_farming/textures/mcl_farming_pumpkin_face_preview.png b/mods/ITEMS/mcl_farming/textures/mcl_farming_pumpkin_face_preview.png index a151fcab6c71ab850dea5ed126d9c79f7f5d89b8..64aa18669fb400a2c2172c4db8920952903fcf79 100644 GIT binary patch literal 363 zcmeAS@N?(olHy`uVBq!ia0vp^0zj<5!VDx|E`RzTNU@|l`Z_W&Z0zU$lgJ8^O!f%! zWnidMV_;}#VPN zIqW5#zOL*~89BIE_`A>6^a6#fJY5_^BrYc>BnTJd{^i8q)S&Kzd@aOv1TF`y}`C9V-ADTyViR>?)F zK#IZ0z{pV70Eo;(j0~)djI9hUwG9lcfM~@}TNDks`6-!cl_(mFtV|58OiUme-rZ{i P1to*0tDnm{r-UW|>Q`oe delta 198 zcmaFO^nr1Lgf|B>0|SFjILALAWftHQ;+hC#FfdH8(^%}Gu{l(2XM)bLT$M}px{>li z*Cv=3>B{irG4Rzg@HH@S=P>XTFz_`o@YON+UKQFku}ijqv%n*=n1O*?7=#%aX3dcR z8s_Hd;uxZF{%xd0 then + d = d0 + t = t0 + if d==0 then return t end + end + end + end + end end + + if t and abs(t.x-p.x) <= dx and abs(t.y-p.y) <= dy and abs(t.z-p.z) <= dz then + return t + end +end --- Functions +-- Ping-Pong the coordinate for Fast Travelling, https://git.minetest.land/Wuzzy/MineClone2/issues/795#issuecomment-11058 +local function ping_pong(x, m, l1, l2) + if x < 0 then + return l1 + abs(((x*m+l1) % (l1*4)) - (l1*2)) + end + return l2 - abs(((x*m+l2) % (l2*4)) - (l2*2)) +end --- Ping-Pong fast travel, https://git.minetest.land/Wuzzy/MineClone2/issues/795#issuecomment-11058 -local function nether_to_overworld(x) - return LIMIT - math.abs(((x * OVERWORLD_TO_NETHER_SCALE + LIMIT) % (LIMIT*4)) - (LIMIT*2)) +local function get_target(p) + if p and p.y and p.x and p.z then + local x, z = p.x, p.z + local y, d = mcl_worlds.y_to_layer(p.y) + if y then + if d=="nether" then + x, y, z = ping_pong(x, TRAVEL_X, LIM_MIN, LIM_MAX), y*TRAVEL_Y, ping_pong(z, TRAVEL_Z, LIM_MIN, LIM_MAX) + y = min(max(y + mcl_vars.mg_overworld_min, mcl_vars.mg_overworld_min), mcl_vars.mg_overworld_max) + elseif d=="overworld" then + x, y, z = floor(x / TRAVEL_X + 0.5), floor(y / TRAVEL_Y + 0.5), floor(z / TRAVEL_Z + 0.5) + y = min(max(y + mcl_vars.mg_nether_min, mcl_vars.mg_nether_min), mcl_vars.mg_nether_max) + end + return {x=x, y=y, z=z}, d + end + end end -- Destroy portal if pos (portal frame or portal node) got destroyed -local function destroy_nether_portal(pos) - local meta = minetest.get_meta(pos) - local node = minetest.get_node(pos) +local function destroy_nether_portal(pos, node) + if not node then return end local nn, orientation = node.name, node.param2 - local obsidian = nn == "mcl_core:obsidian" + local obsidian = nn == OBSIDIAN - local has_meta = minetest.string_to_pos(meta:get_string("portal_frame1")) - if has_meta then - meta:set_string("portal_frame1", "") - meta:set_string("portal_frame2", "") - meta:set_string("portal_target", "") - meta:set_string("portal_time", "") - end local check_remove = function(pos, orientation) - local node = minetest.get_node(pos) - if node and (node.name == "mcl_portals:portal" and (orientation == nil or (node.param2 == orientation))) then - minetest.log("action", "[mcl_portal] Destroying Nether portal at " .. minetest.pos_to_string(pos)) - return minetest.remove_node(pos) + local node = get_node(pos) + if node and (node.name == PORTAL and (orientation == nil or (node.param2 == orientation))) then + minetest.remove_node(pos) + remove_exit(pos) end end if obsidian then -- check each of 6 sides of it and destroy every portal: @@ -89,9 +192,6 @@ local function destroy_nether_portal(pos) check_remove({x = pos.x, y = pos.y + 1, z = pos.z}) return end - if not has_meta then -- no meta means repeated call: function calls on every node destruction - return - end if orientation == 0 then check_remove({x = pos.x - 1, y = pos.y, z = pos.z}, 0) check_remove({x = pos.x + 1, y = pos.y, z = pos.z}, 0) @@ -103,7 +203,7 @@ local function destroy_nether_portal(pos) check_remove({x = pos.x, y = pos.y + 1, z = pos.z}) end -minetest.register_node("mcl_portals:portal", { +minetest.register_node(PORTAL, { description = S("Nether Portal"), _doc_items_longdesc = S("A Nether portal teleports creatures and objects to the hot and dangerous Nether dimension (and back!). Enter at your own risk!"), _doc_items_usagehelp = S("Stand in the portal for a moment to activate the teleportation. Entering a Nether portal for the first time will also create a new portal in the other dimension. If a Nether portal has been built in the Nether, it will lead to the Overworld. A Nether portal is destroyed if the any of the obsidian which surrounds it is destroyed, or if it was caught in an explosion."), @@ -143,7 +243,7 @@ minetest.register_node("mcl_portals:portal", { drop = "", light_source = 11, post_effect_color = {a = 180, r = 51, g = 7, b = 89}, - alpha = PORTAL_ALPHA, + alpha = ALPHA, node_box = { type = "fixed", fixed = { @@ -152,327 +252,42 @@ minetest.register_node("mcl_portals:portal", { }, groups = { creative_breakable = 1, portal = 1, not_in_creative_inventory = 1 }, sounds = mcl_sounds.node_sound_glass_defaults(), - on_destruct = destroy_nether_portal, + after_destruct = destroy_nether_portal, _mcl_hardness = -1, _mcl_blast_resistance = 0, }) -local function find_target_y(x, y, z, y_min, y_max) - local y_org = math.max(math.min(y, y_max), y_min) - local node = minetest.get_node_or_nil({x = x, y = y, z = z}) - if node == nil then - return y_org - end - while node.name ~= "air" and y < y_max do - y = y + 1 - node = minetest.get_node_or_nil({x = x, y = y, z = z}) - if node == nil then - break - end - end - if node then - if node.name ~= "air" then - y = y_org - end - end - while node == nil and y > y_min do - y = y - 1 - node = minetest.get_node_or_nil({x = x, y = y, z = z}) - end - if y == y_max and node ~= nil then -- try reverse direction who knows what they built there... - while node.name ~= "air" and y > y_min do - y = y - 1 - node = minetest.get_node_or_nil({x = x, y = y, z = z}) - if node == nil then - break - end - end - end - if node == nil then - return y_org - end - while node.name == "air" and y > y_min do - y = y - 1 - node = minetest.get_node_or_nil({x = x, y = y, z = z}) - while node == nil and y > y_min do - y = y - 1 - node = minetest.get_node_or_nil({x = x, y = y, z = z}) - end - if node == nil then - return y_org - end - end - if y == y_min then - return y_org - end - return math.max(math.min(y, y_max), y_min) -end - -local function find_nether_target_y(x, y, z) - local target_y = find_target_y(x, y, z, nether_ymin + 4, nether_ymax - 25) + 1 - minetest.log("verbose", "[mcl_portal] Found Nether target altitude: " .. tostring(target_y) .. " for pos. " .. minetest.pos_to_string({x = x, y = y, z = z})) - return target_y -end - -local function find_overworld_target_y(x, y, z) - local target_y = find_target_y(x, y, z, overworld_ymin + 4, overworld_ymax - 25) + 1 - local node = minetest.get_node({x = x, y = target_y - 1, z = z}) - if not node then - return target_y - end - local nn = node.name - if nn ~= "air" and minetest.get_item_group(nn, "water") == 0 then - target_y = target_y + 1 - end - minetest.log("verbose", "[mcl_portal] Found Overworld target altitude: " .. tostring(target_y) .. " for pos. " .. minetest.pos_to_string({x = x, y = y, z = z})) - return target_y -end - - -local function update_target(pos, target, time_str) - local stack = {{x = pos.x, y = pos.y, z = pos.z}} - while #stack > 0 do - local i = #stack - local meta = minetest.get_meta(stack[i]) - if meta:get_string("portal_time") == time_str then - stack[i] = nil -- Already updated, skip it - else - local node = minetest.get_node(stack[i]) - local portal = node.name == "mcl_portals:portal" - if not portal then - stack[i] = nil - else - local x, y, z = stack[i].x, stack[i].y, stack[i].z - meta:set_string("portal_time", time_str) - meta:set_string("portal_target", target) - stack[i].y = y - 1 - stack[i + 1] = {x = x, y = y + 1, z = z} - if node.param2 == 0 then - stack[i + 2] = {x = x - 1, y = y, z = z} - stack[i + 3] = {x = x + 1, y = y, z = z} - else - stack[i + 2] = {x = x, y = y, z = z - 1} - stack[i + 3] = {x = x, y = y, z = z + 1} - end - end - end - end -end - -local function ecb_setup_target_portal(blockpos, action, calls_remaining, param) - -- param.: srcx, srcy, srcz, dstx, dsty, dstz, srcdim, ax1, ay1, az1, ax2, ay2, az2 - - local portal_search = function(target, p1, p2) - local portal_nodes = minetest.find_nodes_in_area(p1, p2, "mcl_portals:portal") - local portal_pos = false - if portal_nodes and #portal_nodes > 0 then - -- Found some portal(s), use nearest: - portal_pos = {x = portal_nodes[1].x, y = portal_nodes[1].y, z = portal_nodes[1].z} - local nearest_distance = vector.distance(target, portal_pos) - for n = 2, #portal_nodes do - local distance = vector.distance(target, portal_nodes[n]) - if distance < nearest_distance then - portal_pos = {x = portal_nodes[n].x, y = portal_nodes[n].y, z = portal_nodes[n].z} - nearest_distance = distance - end - end - end -- here we have the best portal_pos - return portal_pos - end - - if calls_remaining <= 0 then - minetest.log("action", "[mcl_portal] Area for destination Nether portal emerged!") - local src_pos = {x = param.srcx, y = param.srcy, z = param.srcz} - local dst_pos = {x = param.dstx, y = param.dsty, z = param.dstz} - local meta = minetest.get_meta(src_pos) - local portal_pos = portal_search(dst_pos, {x = param.ax1, y = param.ay1, z = param.az1}, {x = param.ax2, y = param.ay2, z = param.az2}) - - if portal_pos == false then - minetest.log("verbose", "[mcl_portal] No portal in area " .. minetest.pos_to_string({x = param.ax1, y = param.ay1, z = param.az1}) .. "-" .. minetest.pos_to_string({x = param.ax2, y = param.ay2, z = param.az2})) - -- Need to build arrival portal: - local org_dst_y = dst_pos.y - if param.srcdim == "overworld" then - dst_pos.y = find_nether_target_y(dst_pos.x, dst_pos.y, dst_pos.z) - else - dst_pos.y = find_overworld_target_y(dst_pos.x, dst_pos.y, dst_pos.z) - end - if math.abs(org_dst_y - dst_pos.y) >= PORTAL_SEARCH_ALTITUDE / 2 then - portal_pos = portal_search(dst_pos, - {x = dst_pos.x - PORTAL_SEARCH_HALF_CHUNK, y = math.floor(dst_pos.y - PORTAL_SEARCH_ALTITUDE / 2), z = dst_pos.z - PORTAL_SEARCH_HALF_CHUNK}, - {x = dst_pos.x + PORTAL_SEARCH_HALF_CHUNK, y = math.ceil(dst_pos.y + PORTAL_SEARCH_ALTITUDE / 2), z = dst_pos.z + PORTAL_SEARCH_HALF_CHUNK} - ) - end - if portal_pos == false then - minetest.log("verbose", "[mcl_portal] 2nd attempt: No portal in area " .. minetest.pos_to_string({x = dst_pos.x - PORTAL_SEARCH_HALF_CHUNK, y = math.floor(dst_pos.y - PORTAL_SEARCH_ALTITUDE / 2), z = dst_pos.z - PORTAL_SEARCH_HALF_CHUNK}) .. "-" .. minetest.pos_to_string({x = dst_pos.x + PORTAL_SEARCH_HALF_CHUNK, y = math.ceil(dst_pos.y + PORTAL_SEARCH_ALTITUDE / 2), z = dst_pos.z + PORTAL_SEARCH_HALF_CHUNK})) - local width, height = 2, 3 - portal_pos = mcl_portals.build_nether_portal(dst_pos, width, height) - end - end - - local target_meta = minetest.get_meta(portal_pos) - local p3 = minetest.string_to_pos(target_meta:get_string("portal_frame1")) - local p4 = minetest.string_to_pos(target_meta:get_string("portal_frame2")) - if p3 and p4 then - portal_pos = vector.divide(vector.add(p3, p4), 2.0) - portal_pos.y = math.min(p3.y, p4.y) - portal_pos = vector.round(portal_pos) - local node = minetest.get_node(portal_pos) - if node and node.name ~= "mcl_portals:portal" then - portal_pos = {x = p3.x, y = p3.y, z = p3.z} - if minetest.get_node(portal_pos).name == "mcl_core:obsidian" then - -- Old-version portal: - if p4.z == p3.z then - portal_pos = {x = p3.x + 1, y = p3.y + 1, z = p3.z} - else - portal_pos = {x = p3.x, y = p3.y + 1, z = p3.z + 1} - end - end - end - end - local time_str = tostring(minetest.get_us_time()) - local target = minetest.pos_to_string(portal_pos) - - update_target(src_pos, target, time_str) - end -end - -local function nether_portal_get_target_position(src_pos) - local _, current_dimension = mcl_worlds.y_to_layer(src_pos.y) - local x, y, z, y_min, y_max = 0, 0, 0, 0, 0 - if current_dimension == "nether" then - x = math.floor(nether_to_overworld(src_pos.x) + 0.5) - z = math.floor(nether_to_overworld(src_pos.z) + 0.5) - y = math.floor((math.min(math.max(src_pos.y, nether_ymin), nether_ymax) - nether_ymin) / nether_dy * overworld_dy + overworld_ymin + 0.5) - y_min = overworld_ymin - y_max = overworld_ymax - else -- overworld: - x = math.floor(src_pos.x / OVERWORLD_TO_NETHER_SCALE + 0.5) - z = math.floor(src_pos.z / OVERWORLD_TO_NETHER_SCALE + 0.5) - y = math.floor((math.min(math.max(src_pos.y, overworld_ymin), overworld_ymax) - overworld_ymin) / overworld_dy * nether_dy + nether_ymin + 0.5) - y_min = nether_ymin - y_max = nether_ymax - end - return x, y, z, current_dimension, y_min, y_max -end - -local function find_or_create_portal(src_pos) - local x, y, z, cdim, y_min, y_max = nether_portal_get_target_position(src_pos) - local pos1 = {x = x - PORTAL_SEARCH_HALF_CHUNK, y = math.max(y_min, math.floor(y - PORTAL_SEARCH_ALTITUDE / 2)), z = z - PORTAL_SEARCH_HALF_CHUNK} - local pos2 = {x = x + PORTAL_SEARCH_HALF_CHUNK, y = math.min(y_max, math.ceil(y + PORTAL_SEARCH_ALTITUDE / 2)), z = z + PORTAL_SEARCH_HALF_CHUNK} - if pos1.y == y_min then - pos2.y = math.min(y_max, pos1.y + PORTAL_SEARCH_ALTITUDE) - else - if pos2.y == y_max then - pos1.y = math.max(y_min, pos2.y - PORTAL_SEARCH_ALTITUDE) - end - end - minetest.emerge_area(pos1, pos2, ecb_setup_target_portal, {srcx=src_pos.x, srcy=src_pos.y, srcz=src_pos.z, dstx=x, dsty=y, dstz=z, srcdim=cdim, ax1=pos1.x, ay1=pos1.y, az1=pos1.z, ax2=pos2.x, ay2=pos2.y, az2=pos2.z}) -end - -local function emerge_target_area(src_pos) - local x, y, z, cdim, y_min, y_max = nether_portal_get_target_position(src_pos) - local pos1 = {x = x - PORTAL_SEARCH_HALF_CHUNK, y = math.max(y_min + 2, math.floor(y - PORTAL_SEARCH_ALTITUDE / 2)), z = z - PORTAL_SEARCH_HALF_CHUNK} - local pos2 = {x = x + PORTAL_SEARCH_HALF_CHUNK, y = math.min(y_max - 2, math.ceil(y + PORTAL_SEARCH_ALTITUDE / 2)), z = z + PORTAL_SEARCH_HALF_CHUNK} - minetest.emerge_area(pos1, pos2) - pos1 = {x = x - 1, y = y_min, z = z - 1} - pos2 = {x = x + 1, y = y_max, z = z + 1} - minetest.emerge_area(pos1, pos2) -end - -local function available_for_nether_portal(p) - local nn = minetest.get_node(p).name - local obsidian = nn == "mcl_core:obsidian" - if nn ~= "air" and minetest.get_item_group(nn, "fire") ~= 1 then - return false, obsidian - end - return true, obsidian -end - -local function light_frame(x1, y1, z1, x2, y2, z2, build_frame) - local build_frame = build_frame or false +local function light_frame(x1, y1, z1, x2, y2, z2, name) local orientation = 0 if x1 == x2 then orientation = 1 end - local disperse = 50 - local pass = 1 - while true do - local protection = false - - for x = x1 - 1 + orientation, x2 + 1 - orientation do - for z = z1 - orientation, z2 + orientation do - for y = y1 - 1, y2 + 1 do - local frame = (x < x1) or (x > x2) or (y < y1) or (y > y2) or (z < z1) or (z > z2) - if frame then - if build_frame then - if pass == 1 then - if minetest.is_protected({x = x, y = y, z = z}, "") then - protection = true - local offset_x = math.random(-disperse, disperse) - local offset_z = math.random(-disperse, disperse) - disperse = disperse + math.random(25, 177) - if disperse > 5000 then - return nil - end - x1, z1 = x1 + offset_x, z1 + offset_z - x2, z2 = x2 + offset_x, z2 + offset_z - local _, dimension = mcl_worlds.y_to_layer(y1) - local height = math.abs(y2 - y1) - y1 = (y1 + y2) / 2 - if dimension == "nether" then - y1 = find_nether_target_y(math.min(x1, x2), y1, math.min(z1, z2)) - else - y1 = find_overworld_target_y(math.min(x1, x2), y1, math.min(z1, z2)) - end - y2 = y1 + height - break - end - else - minetest.set_node({x = x, y = y, z = z}, {name = "mcl_core:obsidian"}) - end - end - else - if not build_frame or pass == 2 then - local node = minetest.get_node({x = x, y = y, z = z}) - minetest.set_node({x = x, y = y, z = z}, {name = "mcl_portals:portal", param2 = orientation}) - end - end - if not frame and pass == 2 then - local meta = minetest.get_meta({x = x, y = y, z = z}) - -- Portal frame corners - meta:set_string("portal_frame1", minetest.pos_to_string({x = x1, y = y1, z = z1})) - meta:set_string("portal_frame2", minetest.pos_to_string({x = x2, y = y2, z = z2})) - -- Portal target coordinates - meta:set_string("portal_target", "") - -- Portal last teleportation time - meta:set_string("portal_time", tostring(0)) - end - end - if protection then - break + local pos = {} + for x = x1 - 1 + orientation, x2 + 1 - orientation do + pos.x = x + for z = z1 - orientation, z2 + orientation do + pos.z = z + for y = y1 - 1, y2 + 1 do + pos.y = y + local frame = (x < x1) or (x > x2) or (y < y1) or (y > y2) or (z < z1) or (z > z2) + if frame then + minetest.set_node(pos, {name = OBSIDIAN}) + else + minetest.set_node(pos, {name = PORTAL, param2 = orientation}) + add_exit(pos) end end - if protection then - break - end - end - if build_frame == false or pass == 2 then - break - end - if build_frame and not protection and pass == 1 then - pass = 2 end end - emerge_target_area({x = x1, y = y1, z = z1}) return {x = x1, y = y1, z = z1} end --Build arrival portal -function mcl_portals.build_nether_portal(pos, width, height, orientation) - local height = height or FRAME_SIZE_Y_MIN - 2 - local width = width or FRAME_SIZE_X_MIN - 2 - local orientation = orientation or math.random(0, 1) +function build_nether_portal(pos, width, height, orientation, name) + local height = height or H_MIN - 2 + local width = width or W_MIN - 2 + local orientation = orientation or random(0, 1) if orientation == 0 then minetest.load_area({x = pos.x - 3, y = pos.y - 1, z = pos.z - width * 2}, {x = pos.x + width + 2, y = pos.y + height + 2, z = pos.z + width * 2}) @@ -480,27 +295,15 @@ function mcl_portals.build_nether_portal(pos, width, height, orientation) minetest.load_area({x = pos.x - width * 2, y = pos.y - 1, z = pos.z - 3}, {x = pos.x + width * 2, y = pos.y + height + 2, z = pos.z + width + 2}) end - pos = light_frame(pos.x, pos.y, pos.z, pos.x + (1 - orientation) * (width - 1), pos.y + height - 1, pos.z + orientation * (width - 1), true) - - -- Clear some space around: - for x = pos.x - math.random(2 + (width-2)*( orientation), 5 + (2*width-5)*( orientation)), pos.x + width*(1-orientation) + math.random(2+(width-2)*( orientation), 4 + (2*width-4)*( orientation)) do - for z = pos.z - math.random(2 + (width-2)*(1-orientation), 5 + (2*width-5)*(1-orientation)), pos.z + width*( orientation) + math.random(2+(width-2)*(1-orientation), 4 + (2*width-4)*(1-orientation)) do - for y = pos.y - 1, pos.y + height + math.random(1,6) do - local nn = minetest.get_node({x = x, y = y, z = z}).name - if nn ~= "mcl_core:obsidian" and nn ~= "mcl_portals:portal" and minetest.registered_nodes[nn].is_ground_content and not minetest.is_protected({x = x, y = y, z = z}, "") then - minetest.remove_node({x = x, y = y, z = z}) - end - end - end - end + pos = light_frame(pos.x, pos.y, pos.z, pos.x + (1 - orientation) * (width - 1), pos.y + height - 1, pos.z + orientation * (width - 1)) -- Build obsidian platform: for x = pos.x - orientation, pos.x + orientation + (width - 1) * (1 - orientation), 1 + orientation do for z = pos.z - 1 + orientation, pos.z + 1 - orientation + (width - 1) * orientation, 2 - orientation do local pp = {x = x, y = pos.y - 1, z = z} - local nn = minetest.get_node(pp).name - if not minetest.registered_nodes[nn].is_ground_content and not minetest.is_protected(pp, "") then - minetest.set_node(pp, {name = "mcl_core:obsidian"}) + local nn = get_node(pp).name + if not minetest.registered_nodes[nn].is_ground_content and not minetest.is_protected(pp, name) then + minetest.set_node(pp, {name = OBSIDIAN}) end end end @@ -510,40 +313,173 @@ function mcl_portals.build_nether_portal(pos, width, height, orientation) return pos end +-- Teleportation cooloff for some seconds, to prevent back-and-forth teleportation +local function stop_teleport_cooloff(o) + cooloff[o] = nil + chatter[o] = nil +end + +local function teleport_cooloff(obj) + cooloff[obj] = true + if obj:is_player() then + minetest.after(PLAYER_COOLOFF, stop_teleport_cooloff, obj) + else + minetest.after(MOB_COOLOFF, stop_teleport_cooloff, obj) + end +end + +local function finalize_teleport(obj, exit) + if not obj or not exit or not exit.x or not exit.y or not exit.z then return end + + local objpos = obj:get_pos() + if not objpos then return end + minetest.log("warning", "[mcl_portal] 3") + + local is_player = obj:is_player() + local name + if is_player then + name = obj:get_player_name() + end + local y, dim = mcl_worlds.y_to_layer(exit.y) + + + -- If player stands, player is at ca. something+0.5 which might cause precision problems, so we used ceil for objpos.y + objpos = {x = floor(objpos.x+0.5), y = ceil(objpos.y), z = floor(objpos.z+0.5)} + if get_node(objpos).name ~= PORTAL then return end + + -- Enable teleportation cooloff for some seconds, to prevent back-and-forth teleportation + teleport_cooloff(obj) + + -- Teleport + obj:set_pos(exit) + + if is_player then + mcl_worlds.dimension_change(obj, dim) + minetest.sound_play("mcl_portals_teleport", {pos=exit, gain=0.5, max_hear_distance = 16}, true) + minetest.log("action", "[mcl_portal] player "..name.." teleported to Nether portal at "..minetest.pos_to_string(exit)..".") + else + minetest.log("action", "[mcl_portal] entity teleported to Nether portal at "..minetest.pos_to_string(exit)..".") + end +end + +local function create_portal_2(pos1, name, obj) + local orientation = 0 + local pos2 = {x = pos1.x + 3, y = pos1.y + 3, z = pos1.z + 3} + local nodes = minetest.find_nodes_in_area_under_air(pos1, pos2, {"air"}) + if #nodes == 64 then + orientation = random(2) + else + pos2.x = pos2.x - 1 + nodes = minetest.find_nodes_in_area_under_air(pos1, pos2, {"air"}) + if #nodes == 48 then + orientation = 1 + end + end + local exit = build_nether_portal(pos1, W_MIN-2, H_MIN-2, orientation, name) + finalize_teleport(obj, exit) +end + +local function ecb_scan_area(blockpos, action, calls_remaining, param) + if calls_remaining and calls_remaining > 0 then return end + local pos, pos1, pos2, name, obj = param.pos, param.pos1, param.pos2, param.name or "", param.obj + + -- loop in a spiral around pos + local cs, x, z, dx, dz, p0x, p0z, p1x, p1y, p1z, p2x, p2y, p2z = mcl_vars.chunk_size_in_nodes, 0, 0, 0, -1, pos.x, pos.z, pos1.x, pos1.y, pos1.z, pos2.x, pos2.y, pos2.z + local i_max = (cs*2-1) * (cs*2-1) + minetest.log("action", "[mcl_portal] Area for destination Nether portal emerged! We about to iterate " .. tostring(i_max) .. " positions of spiral around "..minetest.pos_to_string(pos)) + + for i = 1, i_max do + local px, pz = p0x + x, p0z + z + minetest.log("action", "[mcl_portal] i=" ..tostring(i) .." px=" .. tostring(px) .." pz=" .. tostring(pz) .. " x:"..tostring(p1x) .."-"..tostring(p2x) .. " z:"..tostring(p1z) .."-"..tostring(p2z)) + if px >= p1x and pz >= p2z and px <= p2x and pz <= p2z then + local p = {x=px, y=p1y, z=pz} + local nodes = minetest.find_nodes_in_area_under_air(p, p, {"group:building_block"}) + minetest.log("action", "[mcl_portal] check " .. minetest.pos_to_string(p) .. ": " .. tostring(nodes and #nodes)) + if nodes and #nodes > 3 then + for j = 1, #nodes do + local node = nodes[j] + if not minetest.is_protected(node, name) then + p.y = node.y + 2 + node.y = node.y + 1 + local node2 = {x = p.x, y = p.y + 2, z = p.z} + if not minetest.is_protected(node2, name) then + local nodes_j = minetest.find_nodes_in_area_under_air(p, node2, {"air"}) + if #nodes_j == 3 then + node2.x = node2.x + 2 + node2.z = node2.z + 2 + nodes_j = minetest.find_nodes_in_area_under_air(node, node2, {"air"}) + if #nodes_j == 36 then + create_portal_2(node, name, obj) + return + end + end + end + end + end + end + end + if x == z or (x < 0 and x == -z) or (x > 0 and x == 1-z) then + dx, dz = -dz, dx + end + x, z = x+dx, z+dz + px, pz = p0x + x, p0z + z + end + create_portal_2(pos, name, obj) +end + +local function create_portal(pos, limit1, limit2, name, obj) + -- we need to emerge the area here, but currently (mt5.4/mcl20.71) map generation is slow + -- so we'll emerge single chunk only: 5x5x5 blocks, 80x80x80 nodes maximum + + local pos1 = mul(mcl_vars.pos_to_chunk(pos), mcl_vars.chunk_size_in_nodes) + local pos2 = add(pos1, mcl_vars.chunk_size_in_nodes - 1) + + if limit1 and limit1.x and limit1.y and limit1.z then + pos1 = {x = max(min(limit1.x, pos.x), pos1.x), y = max(min(limit1.y, pos.y), pos1.y), z = max(min(limit1.z, pos.z), pos1.z)} + end + if limit2 and limit2.x and limit2.y and limit2.z then + pos2 = {x = min(max(limit2.x, pos.x), pos2.x), y = min(max(limit2.y, pos.y), pos2.y), z = min(max(limit2.z, pos.z), pos2.z)} + end + + minetest.emerge_area(pos1, pos2, ecb_scan_area, {pos = vector.new(pos), pos1 = pos1, pos2 = pos2, name=name, obj=obj}) +end + +local function available_for_nether_portal(p) + local nn = get_node(p).name + local obsidian = nn == OBSIDIAN + if nn ~= "air" and minetest.get_item_group(nn, "fire") ~= 1 then + return false, obsidian + end + return true, obsidian +end + local function check_and_light_shape(pos, orientation) local stack = {{x = pos.x, y = pos.y, z = pos.z}} local node_list = {} + local index_list = {} local node_counter = 0 -- Search most low node from the left (pos1) and most right node from the top (pos2) local pos1 = {x = pos.x, y = pos.y, z = pos.z} local pos2 = {x = pos.x, y = pos.y, z = pos.z} - local wrong_portal_nodes_clean_up = function(node_list) - for i = 1, #node_list do - local meta = minetest.get_meta(node_list[i]) - meta:set_string("portal_time", "") - end - return false - end - + local kx, ky, kz = pos.x - 1999, pos.y - 1999, pos.z - 1999 while #stack > 0 do local i = #stack - local meta = minetest.get_meta(stack[i]) - local target = meta:get_string("portal_time") - if target and target == "-2" then + local x, y, z = stack[i].x, stack[i].y, stack[i].z + local k = (x-kx)*16000000 + (y-ky)*4000 + z-kz + if index_list[k] then stack[i] = nil -- Already checked, skip it else local good, obsidian = available_for_nether_portal(stack[i]) if obsidian then stack[i] = nil else - if (not good) or (node_counter >= PORTAL_NODES_MAX) then - return wrong_portal_nodes_clean_up(node_list) + if (not good) or (node_counter >= N_MAX) then + return false end - local x, y, z = stack[i].x, stack[i].y, stack[i].z - meta:set_string("portal_time", "-2") node_counter = node_counter + 1 node_list[node_counter] = {x = x, y = y, z = z} + index_list[k] = true stack[i].y = y - 1 stack[i + 1] = {x = x, y = y + 1, z = z} if orientation == 0 then @@ -563,24 +499,19 @@ local function check_and_light_shape(pos, orientation) end end - if node_counter < PORTAL_NODES_MIN then - return wrong_portal_nodes_clean_up(node_list) + if node_counter < N_MIN then + return false end -- Limit rectangles width and height - if math.abs(pos2.x - pos1.x + pos2.z - pos1.z) + 3 > FRAME_SIZE_X_MAX or math.abs(pos2.y - pos1.y) + 3 > FRAME_SIZE_Y_MAX then - return wrong_portal_nodes_clean_up(node_list) + if abs(pos2.x - pos1.x + pos2.z - pos1.z) + 3 > W_MAX or abs(pos2.y - pos1.y) + 3 > H_MAX then + return false end for i = 1, node_counter do local node_pos = node_list[i] - local node = minetest.get_node(node_pos) - minetest.set_node(node_pos, {name = "mcl_portals:portal", param2 = orientation}) - local meta = minetest.get_meta(node_pos) - meta:set_string("portal_frame1", minetest.pos_to_string(pos1)) - meta:set_string("portal_frame2", minetest.pos_to_string(pos2)) - meta:set_string("portal_time", tostring(0)) - meta:set_string("portal_target", "") + minetest.set_node(node_pos, {name = PORTAL, param2 = orientation}) + add_exit(node_pos) end return true end @@ -596,7 +527,7 @@ function mcl_portals.light_nether_portal(pos) if dim ~= "overworld" and dim ~= "nether" then return false end - local orientation = math.random(0, 1) + local orientation = random(0, 1) for orientation_iteration = 1, 2 do if check_and_light_shape(pos, orientation) then return true @@ -606,126 +537,50 @@ function mcl_portals.light_nether_portal(pos) return false end -local function update_portal_time(pos, time_str) - local stack = {{x = pos.x, y = pos.y, z = pos.z}} - while #stack > 0 do - local i = #stack - local meta = minetest.get_meta(stack[i]) - if meta:get_string("portal_time") == time_str then - stack[i] = nil -- Already updated, skip it - else - local node = minetest.get_node(stack[i]) - local portal = node.name == "mcl_portals:portal" - if not portal then - stack[i] = nil - else - local x, y, z = stack[i].x, stack[i].y, stack[i].z - meta:set_string("portal_time", time_str) - stack[i].y = y - 1 - stack[i + 1] = {x = x, y = y + 1, z = z} - if node.param2 == 0 then - stack[i + 2] = {x = x - 1, y = y, z = z} - stack[i + 3] = {x = x + 1, y = y, z = z} - else - stack[i + 2] = {x = x, y = y, z = z - 1} - stack[i + 3] = {x = x, y = y, z = z + 1} - end - end - end - end -end - -local function prepare_target(pos) - local meta, us_time = minetest.get_meta(pos), minetest.get_us_time() - local portal_time = tonumber(meta:get_string("portal_time")) or 0 - local delta_time_us = us_time - portal_time - local pos1, pos2 = minetest.string_to_pos(meta:get_string("portal_frame1")), minetest.string_to_pos(meta:get_string("portal_frame2")) - if delta_time_us <= DESTINATION_EXPIRES then - -- Destination point must be still cached according to https://minecraft.gamepedia.com/Nether_portal - return update_portal_time(pos, tostring(us_time)) - end - -- No cached destination point - find_or_create_portal(pos) -end - --- Teleportation cooloff for some seconds, to prevent back-and-forth teleportation -local function stop_teleport_cooloff(o) - mcl_portals.nether_portal_cooloff[o] = false - touch_chatter_prevention[o] = nil -end - -local function teleport_cooloff(obj) - if obj:is_player() then - minetest.after(TELEPORT_COOLOFF, stop_teleport_cooloff, obj) - else - minetest.after(MOB_TELEPORT_COOLOFF, stop_teleport_cooloff, obj) - end -end - -- Teleport function local function teleport_no_delay(obj, pos) local is_player = obj:is_player() - if (not obj:get_luaentity()) and (not is_player) then - return - end + if (not is_player and not obj:get_luaentity()) or cooloff[obj] then return end local objpos = obj:get_pos() - if objpos == nil then - return - end + if not objpos then return end - if mcl_portals.nether_portal_cooloff[obj] then - return - end - -- If player stands, player is at ca. something+0.5 - -- which might cause precision problems, so we used ceil. - objpos.y = math.ceil(objpos.y) + -- If player stands, player is at ca. something+0.5 which might cause precision problems, so we used ceil for objpos.y + objpos = {x = floor(objpos.x+0.5), y = ceil(objpos.y), z = floor(objpos.z+0.5)} + if get_node(objpos).name ~= PORTAL then return end - if minetest.get_node(objpos).name ~= "mcl_portals:portal" then - return - end - - local meta = minetest.get_meta(pos) - local delta_time = minetest.get_us_time() - (tonumber(meta:get_string("portal_time")) or 0) - local target = minetest.string_to_pos(meta:get_string("portal_target")) - if delta_time > DESTINATION_EXPIRES or target == nil then - -- Area not ready yet - retry after a second - return minetest.after(1, teleport_no_delay, obj, pos) - end - - -- Enable teleportation cooloff for some seconds, to prevent back-and-forth teleportation - teleport_cooloff(obj) - mcl_portals.nether_portal_cooloff[obj] = true - - -- Teleport - obj:set_pos(target) + local target, dim = get_target(objpos) + if not target then return end + local name if is_player then - mcl_worlds.dimension_change(obj, mcl_worlds.pos_to_dimension(target)) - minetest.sound_play("mcl_portals_teleport", {pos=target, gain=0.5, max_hear_distance = 16}, true) - local name = obj:get_player_name() - minetest.log("action", "[mcl_portal] "..name.." teleported to Nether portal at "..minetest.pos_to_string(target)..".") + name = obj:get_player_name() + end + + local exit = find_exit(target) + if exit then + finalize_teleport(obj, exit) + else + -- need to create arrival portal + create_portal(target, limits[dim].pmin, limits[dim].pmax, name, obj) end end local function prevent_portal_chatter(obj) local time_us = minetest.get_us_time() - local chatter = touch_chatter_prevention[obj] or 0 - touch_chatter_prevention[obj] = time_us + local ch = chatter[obj] or 0 + chatter[obj] = time_us minetest.after(TOUCH_CHATTER_TIME, function(o) - if not o or not touch_chatter_prevention[o] then - return - end - if minetest.get_us_time() - touch_chatter_prevention[o] >= TOUCH_CHATTER_TIME_US then - touch_chatter_prevention[o] = nil + if o and chatter[o] and minetest.get_us_time() - chatter[o] >= CHATTER_US then + chatter[o] = nil end end, obj) - return time_us - chatter > TOUCH_CHATTER_TIME_US + return time_us - ch > CHATTER_US end local function animation(player, playername) - local chatter = touch_chatter_prevention[player] or 0 - if mcl_portals.nether_portal_cooloff[player] or minetest.get_us_time() - chatter < TOUCH_CHATTER_TIME_US then + local ch = chatter[player] or 0 + if cooloff[player] or minetest.get_us_time() - ch < CHATTER_US then local pos = player:get_pos() if not pos then return @@ -756,36 +611,35 @@ local function teleport(obj, portal_pos) name = obj:get_player_name() animation(obj, name) end - -- Call prepare_target() first because it might take a long - prepare_target(portal_pos) - -- Prevent quick back-and-forth teleportation - if not mcl_portals.nether_portal_cooloff[obj] then - local creative_enabled = minetest.is_creative_enabled(name) - if creative_enabled then - return teleport_no_delay(obj, portal_pos) - end - minetest.after(TELEPORT_DELAY, teleport_no_delay, obj, portal_pos) + + if cooloff[obj] then return end + + if minetest.is_creative_enabled(name) then + teleport_no_delay(obj, portal_pos) + return end + + minetest.after(DELAY, teleport_no_delay, obj, portal_pos) end minetest.register_abm({ label = "Nether portal teleportation and particles", - nodenames = {"mcl_portals:portal"}, + nodenames = {PORTAL}, interval = 1, chance = 1, action = function(pos, node) local o = node.param2 -- orientation - local d = math.random(0, 1) -- direction - local time = math.random() * 1.9 + 0.5 + local d = random(0, 1) -- direction + local time = random() * 1.9 + 0.5 local velocity, acceleration if o == 1 then - velocity = {x = math.random() * 0.7 + 0.3, y = math.random() - 0.5, z = math.random() - 0.5} - acceleration = {x = math.random() * 1.1 + 0.3, y = math.random() - 0.5, z = math.random() - 0.5} + velocity = {x = random() * 0.7 + 0.3, y = random() - 0.5, z = random() - 0.5} + acceleration = {x = random() * 1.1 + 0.3, y = random() - 0.5, z = random() - 0.5} else - velocity = {x = math.random() - 0.5, y = math.random() - 0.5, z = math.random() * 0.7 + 0.3} - acceleration = {x = math.random() - 0.5, y = math.random() - 0.5, z = math.random() * 1.1 + 0.3} + velocity = {x = random() - 0.5, y = random() - 0.5, z = random() * 0.7 + 0.3} + acceleration = {x = random() - 0.5, y = random() - 0.5, z = random() * 1.1 + 0.3} end - local distance = vector.add(vector.multiply(velocity, time), vector.multiply(acceleration, time * time / 2)) + local distance = add(mul(velocity, time), mul(acceleration, time * time / 2)) if d == 1 then if o == 1 then distance.x = -distance.x @@ -797,11 +651,11 @@ minetest.register_abm({ acceleration.z = -acceleration.z end end - distance = vector.subtract(pos, distance) - for _, obj in ipairs(minetest.get_objects_inside_radius(pos, 15)) do + distance = sub(pos, distance) + for _, obj in pairs(minetest.get_objects_inside_radius(pos, 15)) do if obj:is_player() then minetest.add_particlespawner({ - amount = node_particles_allowed_level + 1, + amount = PARTICLES + 1, minpos = distance, maxpos = distance, minvel = velocity, @@ -830,14 +684,14 @@ minetest.register_abm({ --[[ ITEM OVERRIDES ]] -local longdesc = minetest.registered_nodes["mcl_core:obsidian"]._doc_items_longdesc +local longdesc = minetest.registered_nodes[OBSIDIAN]._doc_items_longdesc longdesc = longdesc .. "\n" .. S("Obsidian is also used as the frame of Nether portals.") local usagehelp = S("To open a Nether portal, place an upright frame of obsidian with a width of at least 4 blocks and a height of 5 blocks, leaving only air in the center. After placing this frame, light a fire in the obsidian frame. Nether portals only work in the Overworld and the Nether.") -minetest.override_item("mcl_core:obsidian", { +minetest.override_item(OBSIDIAN, { _doc_items_longdesc = longdesc, _doc_items_usagehelp = usagehelp, - on_destruct = destroy_nether_portal, + after_destruct = destroy_nether_portal, _on_ignite = function(user, pointed_thing) local x, y, z = pointed_thing.under.x, pointed_thing.under.y, pointed_thing.under.z -- Check empty spaces around obsidian and light all frames found: @@ -848,7 +702,7 @@ minetest.override_item("mcl_core:obsidian", { if portals_placed then minetest.log("action", "[mcl_portal] Nether portal activated at "..minetest.pos_to_string({x=x,y=y,z=z})..".") if minetest.get_modpath("doc") then - doc.mark_entry_as_revealed(user:get_player_name(), "nodes", "mcl_portals:portal") + doc.mark_entry_as_revealed(user:get_player_name(), "nodes", PORTAL) -- Achievement for finishing a Nether portal TO the Nether local dim = mcl_worlds.pos_to_dimension({x=x, y=y, z=z})