mcl_minecarts = {} mcl_minecarts.modpath = minetest.get_modpath("mcl_minecarts") mcl_minecarts.speed_max = 10 dofile(mcl_minecarts.modpath.."/functions.lua") dofile(mcl_minecarts.modpath.."/rails.lua") -- Table for item-to-entity mapping. Keys: itemstring, Values: Corresponding entity ID local entity_mapping = {} local function register_entity(entity_id, mesh, textures, drop, on_rightclick) local cart = { physical = false, collisionbox = {-10/16., -0.5, -10/16, 10/16, 0.25, 10/16}, visual = "mesh", mesh = mesh, visual_size = {x=1, y=1}, textures = textures, on_rightclick = on_rightclick, _driver = nil, -- player who sits in and controls the minecart (only for minecart!) _punched = false, -- used to re-send _velocity and position _velocity = {x=0, y=0, z=0}, -- only used on punch _start_pos = nil, -- Used to calculate distance for “On A Rail” achievement _old_dir = {x=0, y=0, z=0}, _old_pos = nil, _old_vel = {x=0, y=0, z=0}, _old_switch = 0, _railtype = nil, } function cart:on_activate(staticdata, dtime_s) self.object:set_armor_groups({immortal=1}) end function cart:on_punch(puncher, time_from_last_punch, tool_capabilities, direction) local pos = self.object:getpos() if not self._railtype then local node = minetest.get_node(vector.floor(pos)).name self._railtype = minetest.get_item_group(node, "connect_to_raillike") end if not puncher or not puncher:is_player() then local cart_dir = mcl_minecarts:get_rail_direction(pos, {x=1, y=0, z=0}, nil, nil, self._railtype) if vector.equals(cart_dir, {x=0, y=0, z=0}) then return end self._velocity = vector.multiply(cart_dir, 3) self._old_pos = nil self._punched = true return end if puncher:get_player_control().sneak then if self._driver then if self._old_pos then self.object:setpos(self._old_pos) end mcl_player.player_attached[self._driver] = nil local player = minetest.get_player_by_name(self._driver) if player then player:set_detach() end end -- Disable detector rail local rou_pos = vector.round(pos) local node = minetest.get_node(rou_pos) if node.name == "mcl_minecarts:detector_rail_on" then local newnode = {name="mcl_minecarts:detector_rail", param2 = node.param2} minetest.swap_node(rou_pos, newnode) mesecon.receptor_off(rou_pos) end -- Drop items and remove cart entity if not minetest.settings:get_bool("creative_mode") then for d=1, #drop do minetest.add_item(self.object:getpos(), drop[d]) end end self.object:remove() return end local vel = self.object:getvelocity() if puncher:get_player_name() == self._driver then if math.abs(vel.x + vel.z) > 7 then return end end local punch_dir = mcl_minecarts:velocity_to_dir(puncher:get_look_dir()) punch_dir.y = 0 local cart_dir = mcl_minecarts:get_rail_direction(pos, punch_dir, nil, nil, self._railtype) if vector.equals(cart_dir, {x=0, y=0, z=0}) then return end time_from_last_punch = math.min(time_from_last_punch, tool_capabilities.full_punch_interval) local f = 3 * (time_from_last_punch / tool_capabilities.full_punch_interval) self._velocity = vector.multiply(cart_dir, f) self._old_pos = nil self._punched = true end function cart:on_step(dtime) local vel = self.object:getvelocity() local update = {} if self._punched then vel = vector.add(vel, self._velocity) self.object:setvelocity(vel) self._old_dir.y = 0 elseif vector.equals(vel, {x=0, y=0, z=0}) then return end local dir, last_switch = nil, nil local pos = self.object:getpos() if self._old_pos and not self._punched then local flo_pos = vector.floor(pos) local flo_old = vector.floor(self._old_pos) if vector.equals(flo_pos, flo_old) then return -- Prevent querying the same node over and over again end -- Update detector rails local rou_pos = vector.round(pos) local rou_old = vector.round(self._old_pos) local node = minetest.get_node(rou_pos) local node_old = minetest.get_node(rou_old) if node.name == "mcl_minecarts:detector_rail" then local newnode = {name="mcl_minecarts:detector_rail_on", param2 = node.param2} minetest.swap_node(rou_pos, newnode) mesecon.receptor_on(rou_pos) end if node_old.name == "mcl_minecarts:detector_rail_on" then local newnode = {name="mcl_minecarts:detector_rail", param2 = node_old.param2} minetest.swap_node(rou_old, newnode) mesecon.receptor_off(rou_old) end end local ctrl, player = nil, nil if self._driver then player = minetest.get_player_by_name(self._driver) if player then ctrl = player:get_player_control() end end -- Stop cart if velocity vector flips if self._old_vel and self._old_vel.y == 0 and (self._old_vel.x * vel.x < 0 or self._old_vel.z * vel.z < 0) then self._old_vel = {x = 0, y = 0, z = 0} self._old_pos = pos self.object:setvelocity(vector.new()) self.object:setacceleration(vector.new()) return end self._old_vel = vector.new(vel) if self._old_pos then local diff = vector.subtract(self._old_pos, pos) for _,v in ipairs({"x","y","z"}) do if math.abs(diff[v]) > 1.1 then local expected_pos = vector.add(self._old_pos, self._old_dir) dir, last_switch = mcl_minecarts:get_rail_direction(pos, self._old_dir, ctrl, self._old_switch, self._railtype) if vector.equals(dir, {x=0, y=0, z=0}) then dir = false pos = vector.new(expected_pos) update.pos = true end break end end end if vel.y == 0 then for _,v in ipairs({"x", "z"}) do if vel[v] ~= 0 and math.abs(vel[v]) < 0.9 then vel[v] = 0 update.vel = true end end end local cart_dir = mcl_minecarts:velocity_to_dir(vel) local max_vel = mcl_minecarts.speed_max if not dir then dir, last_switch = mcl_minecarts:get_rail_direction(pos, cart_dir, ctrl, self._old_switch, self._railtype) end local new_acc = {x=0, y=0, z=0} if vector.equals(dir, {x=0, y=0, z=0}) then vel = {x=0, y=0, z=0} update.vel = true else -- If the direction changed if dir.x ~= 0 and self._old_dir.z ~= 0 then vel.x = dir.x * math.abs(vel.z) vel.z = 0 pos.z = math.floor(pos.z + 0.5) update.pos = true end if dir.z ~= 0 and self._old_dir.x ~= 0 then vel.z = dir.z * math.abs(vel.x) vel.x = 0 pos.x = math.floor(pos.x + 0.5) update.pos = true end -- Up, down? if dir.y ~= self._old_dir.y then vel.y = dir.y * math.abs(vel.x + vel.z) pos = vector.round(pos) update.pos = true end -- Slow down or speed up local acc = dir.y * -1.8 local speed_mod = minetest.registered_nodes[minetest.get_node(pos).name]._rail_acceleration if speed_mod and speed_mod ~= 0 then acc = acc + speed_mod else acc = acc - 0.4 end new_acc = vector.multiply(dir, acc) end self.object:setacceleration(new_acc) self._old_pos = vector.new(pos) self._old_dir = vector.new(dir) self._old_switch = last_switch -- Limits for _,v in ipairs({"x","y","z"}) do if math.abs(vel[v]) > max_vel then vel[v] = mcl_minecarts:get_sign(vel[v]) * max_vel new_acc[v] = 0 update.vel = true end end -- Give achievement when player reached a distance of 1000 nodes from the start position if self._driver and (vector.distance(self._start_pos, pos) >= 1000) then awards.unlock(self._driver, "mcl:onARail") end if update.pos or self._punched then local yaw = 0 if dir.x < 0 then yaw = 0.5 elseif dir.x > 0 then yaw = 1.5 elseif dir.z < 0 then yaw = 1 end self.object:setyaw(yaw * math.pi) end if self._punched then self._punched = false end if not (update.vel or update.pos) then return end local anim = {x=0, y=0} if dir.y == -1 then anim = {x=1, y=1} elseif dir.y == 1 then anim = {x=2, y=2} end self.object:set_animation(anim, 1, 0) self.object:setvelocity(vel) if update.pos then self.object:setpos(pos) end update = nil end function cart:get_staticdata() return "" end minetest.register_entity(entity_id, cart) end -- Place a minecart at pointed_thing mcl_minecarts.place_minecart = function(itemstack, pointed_thing) if not pointed_thing.type == "node" then return end local railpos, node if mcl_minecarts:is_rail(pointed_thing.under) then railpos = pointed_thing.under node = minetest.get_node(pointed_thing.under) elseif mcl_minecarts:is_rail(pointed_thing.above) then railpos = pointed_thing.above node = minetest.get_node(pointed_thing.above) else return end -- Activate detector rail if node.name == "mcl_minecarts:detector_rail" then local newnode = {name="mcl_minecarts:detector_rail_on", param2 = node.param2} minetest.swap_node(railpos, newnode) mesecon.receptor_on(railpos) end local entity_id = entity_mapping[itemstack:get_name()] local cart = minetest.add_entity(railpos, entity_id) local railtype = minetest.get_item_group(node.name, "connect_to_raillike") local cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype) cart:setyaw(minetest.dir_to_yaw(cart_dir)) if not minetest.settings:get_bool("creative_mode") then itemstack:take_item() end return itemstack end local register_craftitem = function(itemstring, entity_id, description, longdesc, usagehelp, icon, creative) entity_mapping[itemstring] = entity_id local groups = { minecart = 1, transport = 1 } if creative == false then groups.not_in_creative_inventory = 1 end local def = { stack_max = 1, on_place = function(itemstack, placer, pointed_thing) if not pointed_thing.type == "node" then return end -- Call on_rightclick if the pointed node defines it local node = minetest.get_node(pointed_thing.under) if placer and not placer:get_player_control().sneak then if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack end end return mcl_minecarts.place_minecart(itemstack, pointed_thing) end, _on_dispense = function(stack, pos, droppos, dropnode, dropdir) -- Place minecart as entity on rail. If there's no rail, just drop it. local placed if minetest.get_item_group(dropnode.name, "rail") ~= 0 then -- FIXME: This places minecarts even if the spot is already occupied local pointed_thing = { under = droppos, above = { x=droppos.x, y=droppos.y+1, z=droppos.z } } placed = mcl_minecarts.place_minecart(stack, pointed_thing) end if placed == nil then -- Drop item minetest.add_item(droppos, stack) end end, groups = groups, } def.description = description def._doc_items_longdesc = longdesc def._doc_items_usagehelp = usagehelp def.inventory_image = icon def.wield_image = icon minetest.register_craftitem(itemstring, def) end local function register_minecart(itemstring, entity_id, description, longdesc, usagehelp, mesh, textures, icon, drop, on_rightclick, creative) register_entity(entity_id, mesh, textures, drop, on_rightclick) register_craftitem(itemstring, entity_id, description, longdesc, usagehelp, icon, creative) if minetest.get_modpath("doc_identifier") ~= nil then doc.sub.identifier.register_object(entity_id, "craftitems", itemstring) end end -- Minecart register_minecart( "mcl_minecarts:minecart", "mcl_minecarts:minecart", "Minecart", "Minecarts can be used for a quick transportion on rails." .. "\n" .. "Minecarts only ride on rails and always follow the tracks. At a T-junction with no straight way ahead, they turn left. The speed is affected by the rail type.", "You can place the minecart on rails. Right-click it to enter it. Punch it to get it moving." .. "\n" .. "To obtain the minecart, punch it while holding down the sneak key.", "mcl_minecarts_minecart.b3d", {"mcl_minecarts_minecart.png"}, "mcl_minecarts_minecart_normal.png", {"mcl_minecarts:minecart"}, function(self, clicker) if not clicker or not clicker:is_player() then return end local player_name = clicker:get_player_name() if self._driver and player_name == self._driver then self._driver = nil self._start_pos = nil clicker:set_detach() elseif not self._driver then self._driver = player_name self._start_pos = self.object:getpos() mcl_player.player_attached[player_name] = true clicker:set_attach(self.object, "", {x=0, y=3, z=0}, {x=0, y=0, z=0}) end end ) -- Minecart with Chest register_minecart( "mcl_minecarts:chest_minecart", "mcl_minecarts:chest_minecart", "Minecart with Chest", nil, nil, "mcl_minecarts_minecart_chest.b3d", { "mcl_chests_normal.png", "mcl_minecarts_minecart.png" }, "mcl_minecarts_minecart_chest.png", {"mcl_minecarts:minecart", "mcl_chests:chest"}) -- Minecart with Furnace register_minecart( "mcl_minecarts:furnace_minecart", "mcl_minecarts:furnace_minecart", "Minecart with Furnace", nil, nil, "mcl_minecarts_minecart_block.b3d", { "default_furnace_top.png", "default_furnace_top.png", "default_furnace_front.png", "default_furnace_side.png", "default_furnace_side.png", "default_furnace_side.png", "mcl_minecarts_minecart.png", }, "mcl_minecarts_minecart_furnace.png", {"mcl_minecarts:minecart", "mcl_furnaces:furnace"}, -- Feed furnace with coal function(self, clicker) if not clicker or not clicker:is_player() then return end if not self._fueltime then self._fueltime = 0 end local held = clicker:get_wielded_item() if minetest.get_item_group(held:get_name(), "coal") == 1 then self._fueltime = self._fueltime + 180 if not minetest.settings:get_bool("creative_mode") then held:take_item() local index = clicker:get_wielded_index() local inv = clicker:get_inventory() inv:set_stack("main", index, held) end -- DEBUG minetest.chat_send_player(clicker:get_player_name(), "Fuel: " .. tostring(self._fueltime)) end end ) -- Minecart with Command Block register_minecart( "mcl_minecarts:command_block_minecart", "mcl_minecarts:command_block_minecart", "Minecart with Command Block", nil, nil, "mcl_minecarts_minecart_block.b3d", { "jeija_commandblock_off.png^[verticalframe:2:0", "jeija_commandblock_off.png^[verticalframe:2:0", "jeija_commandblock_off.png^[verticalframe:2:0", "jeija_commandblock_off.png^[verticalframe:2:0", "jeija_commandblock_off.png^[verticalframe:2:0", "jeija_commandblock_off.png^[verticalframe:2:0", "mcl_minecarts_minecart.png", }, "mcl_minecarts_minecart_command_block.png", {"mcl_minecarts:minecart"}, nil, false ) -- Minecart with Hopper register_minecart( "mcl_minecarts:hopper_minecart", "mcl_minecarts:hopper_minecart", "Minecart with Hopper", nil, nil, "mcl_minecarts_minecart_hopper.b3d", { "mcl_hoppers_hopper_inside.png", "mcl_minecarts_minecart.png", "mcl_hoppers_hopper_outside.png", "mcl_hoppers_hopper_top.png", }, "mcl_minecarts_minecart_hopper.png", {"mcl_minecarts:minecart", "mcl_hoppers:hopper"} ) -- Minecart with TNT register_minecart( "mcl_minecarts:tnt_minecart", "mcl_minecarts:tnt_minecart", "Minecart with TNT", nil, nil, "mcl_minecarts_minecart_block.b3d", { "default_tnt_top.png", "default_tnt_bottom.png", "default_tnt_side.png", "default_tnt_side.png", "default_tnt_side.png", "default_tnt_side.png", "mcl_minecarts_minecart.png", }, "mcl_minecarts_minecart_tnt.png", {"mcl_minecarts:minecart", "mcl_tnt:tnt"} ) minetest.register_craft({ output = "mcl_minecarts:minecart", recipe = { {"mcl_core:iron_ingot", "", "mcl_core:iron_ingot"}, {"mcl_core:iron_ingot", "mcl_core:iron_ingot", "mcl_core:iron_ingot"}, }, }) minetest.register_craft({ output = "mcl_minecarts:hopper_minecart", recipe = { {"mcl_hoppers:hopper"}, {"mcl_minecarts:minecart"}, }, }) minetest.register_craft({ output = "mcl_minecarts:chest_minecart", recipe = { {"mcl_chests:chest"}, {"mcl_minecarts:minecart"}, }, }) minetest.register_craft({ output = "mcl_minecarts:tnt_minecart", recipe = { {"mcl_tnt:tnt"}, {"mcl_minecarts:minecart"}, }, }) minetest.register_craft({ output = "mcl_minecarts:furnace_minecart", recipe = { {"mcl_furnaces:furnace"}, {"mcl_minecarts:minecart"}, }, })