mcl_minecarts = {} mcl_minecarts.modpath = minetest.get_modpath("mcl_minecarts") mcl_minecarts.speed_max = 10 function vector.floor(v) return { x = math.floor(v.x), y = math.floor(v.y), z = math.floor(v.z) } end dofile(mcl_minecarts.modpath.."/functions.lua") dofile(mcl_minecarts.modpath.."/rails.lua") mcl_minecarts.cart = { physical = false, collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}, visual = "mesh", mesh = "cart.x", visual_size = {x=1, y=1}, textures = {"cart.png"}, _driver = nil, _punched = false, -- used to re-send _velocity and position _velocity = {x=0, y=0, z=0}, -- only used on punch _old_dir = {x=0, y=0, z=0}, _old_pos = nil, _old_switch = 0, _railtype = nil, } function mcl_minecarts.cart:on_rightclick(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 clicker:set_detach() elseif not self._driver then self._driver = player_name default.player_attached[player_name] = true clicker:set_attach(self.object, "", {x=0, y=3, z=0}, {x=0, y=0, z=0}) end end function mcl_minecarts.cart:on_activate(staticdata, dtime_s) self.object:set_armor_groups({immortal=1}) end function mcl_minecarts.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 default.player_attached[self._driver] = nil local player = minetest.get_player_by_name(self._driver) if player then player:set_detach() end end self.object:remove() puncher:get_inventory():add_item("main", "mcl_minecarts:minecart") 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 mcl_minecarts.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 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 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 = tonumber(minetest.get_meta(pos):get_string("cart_acceleration")) if speed_mod and speed_mod ~= 0 then if speed_mod > 0 then for _,v in ipairs({"x","y","z"}) do if math.abs(vel[v]) >= max_vel then speed_mod = 0 break end end end acc = acc + (speed_mod * 8) 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 update.vel = true end end if self._punched then self._punched = false end if not (update.vel or update.pos) then return end 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) 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 minetest.register_entity("mcl_minecarts:minecart", mcl_minecarts.cart) minetest.register_craftitem("mcl_minecarts:minecart", { description = "Minecart", inventory_image = minetest.inventorycube("cart_top.png", "cart_side.png", "cart_side.png"), wield_image = "cart_side.png", on_place = function(itemstack, placer, pointed_thing) if not pointed_thing.type == "node" then return end if mcl_minecarts:is_rail(pointed_thing.under) then minetest.add_entity(pointed_thing.under, "mcl_minecarts:minecart") elseif mcl_minecarts:is_rail(pointed_thing.above) then minetest.add_entity(pointed_thing.above, "mcl_minecarts:minecart") else return end itemstack:take_item() return itemstack end, groups = { minecart = 1 }, }) minetest.register_craft({ output = "mcl_minecarts:minecart", recipe = { {"default:steel_ingot", "", "default:steel_ingot"}, {"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"}, }, })