Refactor enter/leave hook processing, add node watches for implementing hopper-to-minecart functionality (should properly handle heavy server lag without missing any time), temporarily disable hopper push/pull to minecart in mcl_hoppers, prepare to move minecart-specific on_step behavior out of main on_step function and to a minecart-specific handler
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@ -68,7 +68,7 @@ end
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--[[
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An array of (u,v,w) positions to check. Actual direction is u * dir + v * right + w * vector.new(0,1,0)
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An array of (u,v,w) positions to check. Actual direction is u * dir + v * right + w * up
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]]
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local rail_checks = {
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{ 1, 0, 0 }, -- forwards
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@ -21,27 +21,11 @@ local function mcl_log(message)
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end
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end
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local function handle_cart_enter(self, pos, next_dir)
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local staticdata = self._staticdata
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local node = minetest.get_node(pos)
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mcl_minecarts.on_enter_below = function(pos, cart, next_dir, node_def)
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local staticdata = cart._staticdata
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if (node_def.groups.hopper or 0) == 0 then return end
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-- Handle track behaviors
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local node_def = minetest.registered_nodes[node.name]
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if node_def._mcl_minecarts_on_enter then
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node_def._mcl_minecarts_on_enter(pos, self)
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end
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-- check for hopper under the rail
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local under_pos = pos - vector.new(0,1,0)
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local under_node_name = minetest.get_node(under_pos).name
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local under_node_def = minetest.registered_nodes[under_node_name]
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if under_node_def._mcl_minecarts_on_enter_above then
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under_node_def._mcl_minecarts_on_enter_above(under_pos, self)
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else
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local hopper_pulled = false
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if DEBUG then print( "under_node_name="..under_node_name..", hopper="..tostring(under_node_def.groups.hopper)) end
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if under_node_def and under_node_def.groups.hopper ~= 0 then
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hopper_pulled = mcl_hoppers.pull_from_minecart( self, under_pos, self._inv_size or 0 )
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local hopper_pulled = mcl_hoppers.pull_from_minecart( cart, pos, cart._inv_size or 0 )
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if DEBUG then print( "Attempt pull_from_minecart, hopper_pulled="..tostring(hopper_pulled) ) end
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if hopper_pulled and next_dir ~= staticdata.dir then
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@ -51,29 +35,65 @@ local function handle_cart_enter(self, pos, next_dir)
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staticdata.delay = 1.5
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end
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end
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end
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end
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end
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-- Handle above-track behaviors (to ensure hoppers can transfer at least one item)
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local above_pos = pos + vector.new(0,1,0)
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local above_node_name = minetest.get_node(above_pos).name
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local above_node_def = minetest.registered_nodes[above_node_name]
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if above_node_def._mcl_minecarts_on_enter_below then
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above_node_def._mcl_minecarts_on_enter_below(above_pos, self)
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--[[
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Array of hooks { {u,v,w}, name }
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Actual position is pos + u * dir + v * right + w * up
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]]
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local enter_exit_checks = {
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{ 0, 0, 0, "" },
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{ 0, 0, 1, "_above" },
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{ 0, 0,-1, "_below" },
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{ 0, 1, 0, "_side" },
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{ 0,-1, 0, "_side" },
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}
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local function handle_cart_enter_exit(self, pos, next_dir, event)
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local staticdata = self._staticdata
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local dir = staticdata.dir
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local right = vector.new( dir.z, dir.y, -dir.x)
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local up = vector.new(0,1,0)
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for _,check in ipairs(enter_exit_checks) do
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local check_pos = pos + dir * check[1] + right * check[2] + up * check[3]
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local node = minetest.get_node(check_pos)
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local node_def = minetest.registered_nodes[node.name]
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-- node-specific hook
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local hook = node_def["_mcl_minecarts_"..event..check[4]]
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if hook then hook(check_pos, self, next_dir) end
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-- global minecart hook
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hook = mcl_minecarts[event..check[4]]
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if hook then hook(check_pos, self, next_dir, node_def) end
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end
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-- Handle cart-specific behaviors
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if self._mcl_minecarts_on_enter then
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self._mcl_minecarts_on_enter(self, pos)
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end
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local hook = self["_mcl_minecarts_"..event]
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if hook then hook(self, pos) end
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end
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local function handle_cart_enter(self, pos, next_dir)
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handle_cart_enter_exit(self, pos, next_dir, "on_enter" )
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end
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local function handle_cart_leave(self, pos, next_dir)
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handle_cart_enter_exit(self, pos, next_dir, "on_leave" )
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end
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local function handle_cart_leave(pos)
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local node_name = minetest.get_node(pos).name
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local node_def = minetest.registered_nodes[node_name]
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if node_def._mcl_minecarts_on_leave then
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node_def._mcl_minecarts_on_leave(pos, self)
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local function handle_cart_node_watches(self, dtime)
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local staticdata = self._staticdata
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local watches = staticdata.node_watches or {}
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local new_watches = {}
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for _,node_pos in ipairs(watches) do
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local node = minetest.get_node(node_pos)
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local node_def = minetest.registered_nodes[node.name]
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local hook = node_def._mcl_minecarts_node_on_step
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if hook and hook(node_pos, self, dtime) then
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new_watches[#new_watches] = node_pos
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end
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end
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staticdata.node_watches = new_watches
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end
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local function update_cart_orientation(self,staticdata)
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@ -276,10 +296,8 @@ local function do_movement_step(self, dtime)
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if x_1 >= 0.99 then
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staticdata.distance = 0
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-- Leave the old node
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handle_cart_leave(pos)
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-- Anchor at the next node
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local old_pos = pos
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pos = pos + staticdata.dir
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staticdata.connected_at = pos
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@ -289,6 +307,9 @@ local function do_movement_step(self, dtime)
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print( "Changing direction from "..tostring(staticdata.dir).." to "..tostring(next_dir))
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end
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-- Leave the old node
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handle_cart_leave(self, old_pos, next_dir )
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-- Enter the new node
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handle_cart_enter(self, pos, next_dir)
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@ -362,7 +383,12 @@ local function do_movement( self, dtime )
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-- it impossible to jump across gaps due to server lag
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-- causing large timesteps
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while dtime > 0 do
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dtime = do_movement_step(self, dtime)
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local new_dtime = do_movement_step(self, dtime)
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-- Handle node watches here in steps to prevent server lag from changing behavior
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handle_cart_node_watches(self, dtime - new_dtime)
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dtime = new_dtime
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end
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-- Clear punched flag now that movement for this step has been completed
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@ -581,6 +607,7 @@ local function register_entity(entity_id, def)
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on_activate_by_rail = def.on_activate_by_rail,
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_mcl_minecarts_on_enter = def._mcl_minecarts_on_enter,
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_mcl_minecarts_on_place = def._mcl_minecarts_on_place,
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_mcl_minecarts_on_step = def._mcl_minecarts_on_step,
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_driver = nil, -- player who sits in and controls the minecart (only for minecart!)
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_passenger = nil, -- for mobs
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@ -728,8 +755,20 @@ local function register_entity(entity_id, def)
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local passenger_attach_position = vector.new(0, -1.75, 0)
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function cart:add_node_watch(pos)
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local staticdata = self._staticdata
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local watches = staticdata.watches
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for _,watch in ipairs(watches) do
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if watch == pos then return end
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end
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watches[#watches+1] = pos
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end
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function cart:on_step(dtime)
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-- TODO: move to _mcl_minecarts_on_step handler and on_enter handler for hopper minecart
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hopper_take_item(self, dtime)
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local staticdata = self._staticdata
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-- Make sure all carts have an ID to isolate them
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@ -787,6 +826,7 @@ local function register_entity(entity_id, def)
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end
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end
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-- TODO: move to _mcl_minecarts_on_step handler for plain minecart
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-- Grab mob
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if math.random(1,20) > 15 and not self._passenger then
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if self.name == "mcl_minecarts:minecart" then
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@ -811,6 +851,7 @@ local function register_entity(entity_id, def)
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end
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-- Drop minecart if it isn't on a rail anymore
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--[[ Remove this entirely once off-cart minecart behavior is implemented
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if self._last_float_check == nil then
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self._last_float_check = 0
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else
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@ -837,7 +878,14 @@ local function register_entity(entity_id, def)
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end
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self._last_float_check = 0
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end
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]]
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local hook = cart._mcl_minecarts_on_step
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if hook then hook(cart,dtime) end
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-- TODO: move the below into cart-specific hooks
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-- TODO: move to _mcl_minecarts_on_step handler for furnace minecart
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-- Update furnace stuff
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if self._fueltime and self._fueltime > 0 then
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self._fueltime = self._fueltime - dtime
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@ -857,6 +905,7 @@ local function register_entity(entity_id, def)
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end
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local has_fuel = self._fueltime and self._fueltime > 0
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-- TODO: move to _mcl_minecarts_on_step handler for TNT minecart
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-- Update TNT stuff
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if self._boomtimer then
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-- Explode
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@ -437,6 +437,7 @@ minetest.register_node("mcl_hoppers:hopper_side_disabled", def_hopper_side_disab
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--[[ END OF NODE DEFINITIONS ]]
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local function hopper_pull_from_mc(mc_ent, dest_pos, inv_size)
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local inv = mcl_entity_invs.load_inv(mc_ent, inv_size)
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if not inv then
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@ -558,7 +559,7 @@ minetest.register_abm({
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and (hm_pos.z >= pos.z - DIST_FROM_MC and hm_pos.z <= pos.z + DIST_FROM_MC) then
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mcl_log("Minecart close enough")
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if entity.name == "mcl_minecarts:hopper_minecart" then
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hopper_pull_from_mc(entity, pos, 5)
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--hopper_pull_from_mc(entity, pos, 5)
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elseif entity.name == "mcl_minecarts:chest_minecart" or entity.name == "mcl_boats:chest_boat" then
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hopper_pull_from_mc(entity, pos, 27)
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end
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@ -567,7 +568,7 @@ minetest.register_abm({
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and (hm_pos.z >= pos.z - DIST_FROM_MC and hm_pos.z <= pos.z + DIST_FROM_MC) then
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mcl_log("Minecart close enough")
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if entity.name == "mcl_minecarts:hopper_minecart" then
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hopper_push_to_mc(entity, pos, 5)
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--hopper_push_to_mc(entity, pos, 5)
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elseif entity.name == "mcl_minecarts:chest_minecart" or entity.name == "mcl_boats:chest_boat" then
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hopper_push_to_mc(entity, pos, 27)
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end
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