From 8fb5412bb07fb6332eecf6c3019f05db46284bb6 Mon Sep 17 00:00:00 2001 From: teknomunk Date: Tue, 9 Apr 2024 11:59:45 +0000 Subject: [PATCH] Remove do_movement dependency on the existence of a cart luaentity --- mods/ENTITIES/mcl_minecarts/carts.lua | 7 +- mods/ENTITIES/mcl_minecarts/movement.lua | 116 ++++++++++++----------- mods/ENTITIES/mcl_minecarts/train.lua | 17 ++-- mods/ITEMS/mcl_hoppers/init.lua | 5 + 4 files changed, 82 insertions(+), 63 deletions(-) diff --git a/mods/ENTITIES/mcl_minecarts/carts.lua b/mods/ENTITIES/mcl_minecarts/carts.lua index b608e1708..828a275d5 100644 --- a/mods/ENTITIES/mcl_minecarts/carts.lua +++ b/mods/ENTITIES/mcl_minecarts/carts.lua @@ -257,7 +257,12 @@ function DEFAULT_CART_DEF:on_step(dtime) end if staticdata.connected_at then - do_movement(self, dtime) + do_movement(staticdata, dtime) + + -- Update entity + local pos = mod.get_cart_position(staticdata) + if pos then self.object:move_to(pos) end + mod.update_cart_orientation(self) else do_detached_movement(self, dtime) end diff --git a/mods/ENTITIES/mcl_minecarts/movement.lua b/mods/ENTITIES/mcl_minecarts/movement.lua index 903cd0516..bccbb5d83 100644 --- a/mods/ENTITIES/mcl_minecarts/movement.lua +++ b/mods/ENTITIES/mcl_minecarts/movement.lua @@ -7,6 +7,8 @@ local S = minetest.get_translator(modname) local mcl_debug,DEBUG = mcl_util.make_mcl_logger("mcl_logging_minecart_debug", "Minecart Debug") local friction = mcl_minecarts.FRICTION local MAX_TRAIN_LENGTH = mod.MAX_TRAIN_LENGTH +DEBUG = true +mcl_debug = function(msg) print(msg) end -- Imports local train_length = mod.train_length @@ -17,16 +19,17 @@ local update_cart_orientation = mod.update_cart_orientation local get_cart_data = mod.get_cart_data local get_cart_position = mod.get_cart_position -local function detach_minecart(self) - local staticdata = self._staticdata - +local function detach_minecart(staticdata) staticdata.connected_at = nil - self.object:set_velocity(staticdata.dir * staticdata.velocity) + + local luaentity = mcl_util.get_luaentity_from_uuid(staticdata.uuid) + if luaentity then + luaentity.object:set_velocity(staticdata.dir * staticdata.velocity) + end end mod.detach_minecart = detach_minecart -local function try_detach_minecart(self) - local staticdata = self._staticdata +local function try_detach_minecart(staticdata) if not staticdata then return end -- Don't try to detach if alread detached @@ -34,7 +37,7 @@ local function try_detach_minecart(self) local node = minetest.get_node(staticdata.connected_at) if minetest.get_item_group(node.name, "rail") == 0 then - detach_minecart(self) + detach_minecart(staticdata) end end @@ -50,9 +53,8 @@ local enter_exit_checks = { { 0,-1, 0, "_side" }, } -local function handle_cart_enter_exit(self, pos, next_dir, event) - local staticdata = self._staticdata - +local function handle_cart_enter_exit(staticdata, pos, next_dir, event) + local luaentity = mcl_util.get_luaentity_from_uuid(staticdata.uuid) local dir = staticdata.dir local right = vector.new( dir.z, dir.y, -dir.x) local up = vector.new(0,1,0) @@ -64,16 +66,20 @@ local function handle_cart_enter_exit(self, pos, next_dir, event) -- node-specific hook local hook_name = "_mcl_minecarts_"..event..check[4] local hook = node_def[hook_name] - if hook then hook(check_pos, self, next_dir, pos) end + if hook then hook(check_pos, luaentity, next_dir, pos) end -- global minecart hook hook = mcl_minecarts[event..check[4]] - if hook then hook(check_pos, self, next_dir, node_def) end + if hook then hook(check_pos, luaentity, next_dir, node_def) end end end -- Handle cart-specific behaviors - local hook = self["_mcl_minecarts_"..event] + if luaentity then + local hook = luaentity["_mcl_minecarts_"..event] + else + minetest.log("warning", "TODO: chanve _mcl_minecarts_"..event.." calling so it is not dependent on the existence of a luaentity") + end if hook then hook(self, pos) end end local function set_metadata_cart_status(pos, uuid, state) @@ -82,26 +88,26 @@ local function set_metadata_cart_status(pos, uuid, state) carts[uuid] = state meta:set_string("_mcl_minecarts_carts", minetest.serialize(carts)) end -local function handle_cart_enter(self, pos, next_dir) +local function handle_cart_enter(staticdata, pos, next_dir) --print("entering "..tostring(pos)) - set_metadata_cart_status(pos, self._staticdata.uuid, 1) - handle_cart_enter_exit(self, pos, next_dir, "on_enter" ) + set_metadata_cart_status(pos, staticdata.uuid, 1) + handle_cart_enter_exit(staticdata, pos, next_dir, "on_enter" ) end -local function handle_cart_leave(self, pos, next_dir) +local function handle_cart_leave(staticdata, pos, next_dir) --print("leaving "..tostring(pos)) - set_metadata_cart_status(pos, self._staticdata.uuid, nil) - handle_cart_enter_exit(self, pos, next_dir, "on_leave" ) + set_metadata_cart_status(pos, staticdata.uuid, nil) + handle_cart_enter_exit(staticdata, pos, next_dir, "on_leave" ) end -local function handle_cart_node_watches(self, dtime) - local staticdata = self._staticdata +local function handle_cart_node_watches(staticdata, dtime) local watches = staticdata.node_watches or {} local new_watches = {} + local luaentity = mcl_util.get_luaentity_from_uuid(staticdata.uuid) for _,node_pos in ipairs(watches) do local node = minetest.get_node(node_pos) local node_def = minetest.registered_nodes[node.name] if node_def then local hook = node_def._mcl_minecarts_node_on_step - if hook and hook(node_pos, self, dtime) then + if hook and hook(node_pos, luaentity, dtime) then new_watches[#new_watches+1] = node_pos end end @@ -110,7 +116,7 @@ local function handle_cart_node_watches(self, dtime) staticdata.node_watches = new_watches end -local function handle_cart_collision(cart1, prev_pos, next_dir) +local function handle_cart_collision(cart1_staticdata, prev_pos, next_dir) -- Look ahead one block local pos = vector.add(prev_pos, next_dir) @@ -127,7 +133,7 @@ local function handle_cart_collision(cart1, prev_pos, next_dir) uuid = nil end - if uuid and uuid ~= cart1._staticdata.uuid then cart_uuid = uuid end + if uuid and uuid ~= cart1_staticdata.uuid then cart_uuid = uuid end end if dirty then meta:set_string("_mcl_minecarts_carts",minetest.serialize(carts)) @@ -137,12 +143,11 @@ local function handle_cart_collision(cart1, prev_pos, next_dir) if not cart_uuid then return end -- Don't collide with the train car in front of you - if cart1._staticdata.ahead == cart_uuid then return end + if cart1_staticdata.ahead == cart_uuid then return end - minetest.log("action","cart #"..cart1._staticdata.uuid.." collided with cart #"..cart_uuid.." at "..tostring(pos)) + minetest.log("action","cart #"..cart1_staticdata.uuid.." collided with cart #"..cart_uuid.." at "..tostring(pos)) -- Standard Collision Handling - local cart1_staticdata = cart1._staticdata local cart2_staticdata = get_cart_data(cart_uuid) local u1 = cart1_staticdata.velocity @@ -171,8 +176,8 @@ local function handle_cart_collision(cart1, prev_pos, next_dir) cart2_staticdata.dir = mcl_minecarts:get_rail_direction(cart2_staticdata.connected_at, cart1_staticdata.dir) end -local function vector_away_from_players(self, staticdata) - local function player_repel(obj, self) +local function vector_away_from_players(cart, staticdata) + local function player_repel(obj) -- Only repel from players local player_name = obj:get_player_name() if not player_name or player_name == "" then return false end @@ -184,8 +189,13 @@ local function vector_away_from_players(self, staticdata) return true end - for _,obj in pairs(minetest.get_objects_inside_radius(self.object:get_pos(), 1.1)) do - if player_repel(obj, self) then + -- Get the cart position + local cart_pos = mod.get_cart_position(staticdata) + if cart then cart_pos = cart.object:get_pos() end + if not cart_pos then return nil end + + for _,obj in pairs(minetest.get_objects_inside_radius(cart_pos, 1.1)) do + if player_repel(obj) then return obj:get_pos() - self.object:get_pos() end end @@ -193,8 +203,8 @@ local function vector_away_from_players(self, staticdata) return nil end -local function direction_away_from_players(self, staticdata) - local diff = vector_away_from_players(self, staticdata) +local function direction_away_from_players(staticdata) + local diff = vector_away_from_players(staticdata) if not diff then return 0 end local length = vector.distance(vector.new(0,0,0),diff) @@ -217,7 +227,7 @@ local function direction_away_from_players(self, staticdata) return 0 end -local function calculate_acceleration(self, staticdata) +local function calculate_acceleration(staticdata) local acceleration = 0 -- Fix up movement data @@ -233,9 +243,11 @@ local function calculate_acceleration(self, staticdata) local node_def = minetest.registered_nodes[node_name] local max_vel = mcl_minecarts.speed_max - if self._go_forward then + local ctrl = staticdata.controls or {} + + if ctrl.go_forward then acceleration = 4 - elseif self._brake then + elseif ctrl.brake then acceleration = -1.5 elseif (staticdata.fueltime or 0) > 0 and staticdata.velocity <= 4 then acceleration = 0.6 @@ -256,7 +268,7 @@ local function calculate_acceleration(self, staticdata) return acceleration end -local function reverse_direction(self, staticdata) +local function reverse_direction(staticdata) if staticdata.behind or staticdata.ahead then reverse_train(self) return @@ -265,18 +277,17 @@ local function reverse_direction(self, staticdata) mod.reverse_cart_direction(staticdata) end -local function do_movement_step(self, dtime) - local staticdata = self._staticdata +local function do_movement_step(staticdata, dtime) if not staticdata.connected_at then return 0 end -- Calculate timestep remaiing in this block local x_0 = staticdata.distance or 0 local remaining_in_block = 1 - x_0 - local a = calculate_acceleration(self, staticdata) + local a = calculate_acceleration(staticdata) local v_0 = staticdata.velocity -- Repel minecarts - local away = direction_away_from_players(self, staticdata) + local away = direction_away_from_players(nil, staticdata) if away > 0 then v_0 = away elseif away < 0 then @@ -379,10 +390,10 @@ local function do_movement_step(self, dtime) handle_cart_collision(self, pos, next_dir) -- Leave the old node - handle_cart_leave(self, old_pos, next_dir ) + handle_cart_leave(staticdata, old_pos, next_dir ) -- Enter the new node - handle_cart_enter(self, pos, next_dir) + handle_cart_enter(staticdata, pos, next_dir) -- Handle end of track if next_dir == staticdata.dir * -1 and next_dir.y == 0 then @@ -399,7 +410,7 @@ local function do_movement_step(self, dtime) -- Velocity should be zero at this point staticdata.velocity = 0 - reverse_direction(self, staticdata) + reverse_direction(staticdata) -- Intermediate movement pos = staticdata.connected_at + staticdata.dir * staticdata.distance @@ -408,11 +419,6 @@ local function do_movement_step(self, dtime) pos = pos + staticdata.dir * staticdata.distance end - self.object:move_to(pos) - - -- Update cart orientation - update_cart_orientation(self) - -- Debug reporting if DEBUG and ( v_0 > 0 or v_1 > 0 ) then mcl_debug( " cart #"..tostring(staticdata.uuid).. @@ -433,8 +439,8 @@ local function do_movement_step(self, dtime) return dtime - timestep end -local function do_movement( self, dtime ) - local staticdata = self._staticdata +local function do_movement( staticdata, dtime ) + assert(staticdata) -- Allow the carts to be delay for the rest of the world to react before moving again if ( staticdata.delay or 0 ) > dtime then @@ -448,13 +454,13 @@ local function do_movement( self, dtime ) -- it impossible to jump across gaps due to server lag -- causing large timesteps while dtime > 0 do - local new_dtime = do_movement_step(self, dtime) - try_detach_minecart(self) + local new_dtime = do_movement_step(staticdata, dtime) + try_detach_minecart(staticdata) - update_train(self) + update_train(staticdata) -- Handle node watches here in steps to prevent server lag from changing behavior - handle_cart_node_watches(self, dtime - new_dtime) + handle_cart_node_watches(staticdata, dtime - new_dtime) dtime = new_dtime end diff --git a/mods/ENTITIES/mcl_minecarts/train.lua b/mods/ENTITIES/mcl_minecarts/train.lua index c2594363c..d60678a09 100644 --- a/mods/ENTITIES/mcl_minecarts/train.lua +++ b/mods/ENTITIES/mcl_minecarts/train.lua @@ -9,6 +9,8 @@ local MAX_TRAIN_LENGTH = mod.MAX_TRAIN_LENGTH -- Follow .behind to the back end of a train local function find_back(start) + assert(start) + while start.behind do local nxt = get_cart_data(start.behind) if not nxt then return start end @@ -18,8 +20,10 @@ local function find_back(start) end -- Iterate across all the cars in a train -local function train_cars(anchor) - local back = find_back(anchor._staticdata) +local function train_cars(staticdata) + assert(staticdata) + + local back = find_back(staticdata) local limit = MAX_TRAIN_LENGTH return function() if not back or limit <= 0 then return end @@ -84,8 +88,8 @@ local function break_train_at(cart) end mod.break_train_at = break_train_at -function mod.update_train(cart) - local staticdata = cart._staticdata +function mod.update_train(staticdata) + --local staticdata = cart._staticdata -- Only update from the back if staticdata.behind or not staticdata.ahead then return end @@ -97,7 +101,7 @@ function mod.update_train(cart) -- Calculate the maximum velocity of all train cars local velocity = 0 local count = 0 - for cart in train_cars(cart) do + for cart in train_cars(staticdata) do velocity = velocity + (cart.velocity or 0) count = count + 1 end @@ -106,7 +110,7 @@ function mod.update_train(cart) -- Set the entire train to the average velocity local behind = nil - for c in train_cars(cart) do + for c in train_cars(staticdata) do local e = 0 local separation local cart_velocity = velocity @@ -145,7 +149,6 @@ function mod.link_cart_ahead(cart, cart_ahead) ca_staticdata.behind = staticdata.uuid end - function mod.reverse_train(cart) for c in train_cars(cart) do mod.reverse_cart_direction(c) diff --git a/mods/ITEMS/mcl_hoppers/init.lua b/mods/ITEMS/mcl_hoppers/init.lua index 86ab5d69f..a02c8fff0 100644 --- a/mods/ITEMS/mcl_hoppers/init.lua +++ b/mods/ITEMS/mcl_hoppers/init.lua @@ -253,6 +253,11 @@ local def_hopper = { cart:remove_node_watch(pos) end, _mcl_minecarts_node_on_step = function(pos, cart, dtime) + if not cart then + minetest.log("warning", "trying to process hopper-to-minecart movement without luaentity") + return + end + local meta = minetest.get_meta(pos) local timer = meta:get_int("minecart_hopper_timer")