343 lines
8.6 KiB
Lua
343 lines
8.6 KiB
Lua
local S = minetest.get_translator_auto(true)
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local sp = minetest.is_singleplayer()
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--
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-- Helper functions
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--
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local function is_water(pos, nodename)
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local nn = nodename or minetest.get_node(pos).name
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return minetest.get_item_group(nn, "water") ~= 0, nn
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end
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local function get_velocity(v, yaw, y)
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local x = -math.sin(yaw) * v
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local z = math.cos(yaw) * v
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return {x = x, y = y, z = z}
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end
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local function get_v(v)
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return math.sqrt(v.x ^ 2 + v.z ^ 2)
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end
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--
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-- Boat entity
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--
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local boat = {
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initial_properties = {
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physical = true,
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collisionbox = {-0.6, -0.4, -0.6, 0.6, 0.3, 0.6},
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visual = "mesh",
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mesh = "boats_boat.b3d",
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textures = {"default_acacia_wood.png"}
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},
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driver = nil,
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v = 0,
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last_v = 0,
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removed = false,
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auto = false
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}
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function boat.on_rightclick(self, clicker)
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if not clicker or not clicker:is_player() then
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return
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end
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local name = clicker:get_player_name()
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if self.driver and name == self.driver then
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self.driver = nil
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self.auto = false
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clicker:set_detach()
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player_api.player_attached[name] = false
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player_api.set_animation(clicker, "stand", 30)
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local pos = clicker:get_pos()
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pos = {x = pos.x, y = pos.y + 0.2, z = pos.z}
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minetest.after(0.1, function()
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if clicker then
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clicker:set_pos(pos)
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end
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end)
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elseif not self.driver then
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local attach = clicker:get_attach()
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if attach and attach:get_luaentity() then
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local luaentity = attach:get_luaentity()
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if luaentity.driver then
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luaentity.driver = nil
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end
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clicker:set_detach()
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end
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self.driver = name
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clicker:set_attach(self.object, "",
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{x = 0, y = 1, z = -2}, {x = 0, y = 0, z = 0})
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player_api.player_attached[name] = true
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minetest.after(0.1, function()
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if clicker then
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player_api.set_animation(clicker, "sit", 30)
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end
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end)
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clicker:set_look_horizontal(self.object:get_yaw())
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end
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end
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-- If driver leaves server while driving boat
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function boat.on_detach_child(self)
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self.driver = nil
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self.auto = false
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end
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function boat.on_activate(self, staticdata)
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self.object:set_armor_groups({immortal = 1})
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if staticdata then
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self.v = tonumber(staticdata)
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end
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self.last_v = self.v
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end
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function boat.get_staticdata(self)
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return tostring(self.v)
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end
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function boat.on_punch(self, puncher)
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if not puncher or not puncher:is_player() or self.removed then
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return
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end
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local name = puncher:get_player_name()
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if self.driver and name == self.driver then
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self.driver = nil
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puncher:set_detach()
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player_api.player_attached[name] = false
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end
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if not self.driver then
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self.removed = true
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local inv = puncher:get_inventory()
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if not inv then
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minetest.add_item(self.object:get_pos(), "boats:boat")
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else
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local leftover = inv:add_item("main", "boats:boat")
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-- if no room in inventory add a replacement boat to the world
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if not leftover:is_empty() then
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minetest.add_item(self.object:get_pos(), leftover)
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end
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end
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-- delay remove to ensure player is detached
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minetest.after(0.1, function()
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if self.object then
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self.object:remove()
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end
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end)
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end
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end
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function boat.on_step(self, dtime)
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-- Drop boat if the player is not on board
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if not sp then
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local drop_timer = 120 -- 2 min
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self.count = (self.count or 0) + dtime
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if self.count > drop_timer then
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minetest.add_item(self.object:get_pos(), "boats:boat")
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self.object:remove()
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return
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end
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end
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self.v = get_v(self.object:get_velocity()) * math.sign(self.v)
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if self.driver then
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self.count = 0
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local driver_objref = minetest.get_player_by_name(self.driver)
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if driver_objref then
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local ctrl = driver_objref:get_player_control()
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if ctrl.up and ctrl.down then
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if not self.auto then
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self.auto = true
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minetest.chat_send_player(self.driver, S("Boat: cruise mode on"))
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end
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elseif ctrl.down then
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self.v = self.v - dtime * 2.0
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if self.auto then
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self.auto = false
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minetest.chat_send_player(self.driver, S("Boat: cruise mode off"))
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end
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elseif ctrl.up or self.auto then
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self.v = self.v + dtime * 2.0
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end
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if ctrl.left then
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if self.v < -0.001 then
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self.object:set_yaw(self.object:get_yaw() - dtime * 0.9)
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else
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self.object:set_yaw(self.object:get_yaw() + dtime * 0.9)
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end
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elseif ctrl.right then
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if self.v < -0.001 then
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self.object:set_yaw(self.object:get_yaw() + dtime * 0.9)
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else
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self.object:set_yaw(self.object:get_yaw() - dtime * 0.9)
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end
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end
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if ctrl.jump then
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player_api.player_attached[self.driver] = false
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driver_objref:set_detach()
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player_api.set_animation(driver_objref, "stand", 30)
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local pos = driver_objref:get_pos()
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pos = {x = pos.x, y = pos.y + 0.2, z = pos.z}
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minetest.after(0.1, function()
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if driver_objref then
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driver_objref:set_pos(pos)
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end
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end)
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self.driver = nil
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self.auto = false
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end
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else
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-- If driver leaves server while driving 'driver' is present
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-- but driver objectref is nil. Reset boat properties.
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self.driver = nil
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self.auto = false
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end
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end
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local velo = self.object:get_velocity()
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if not self.driver and
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self.v == 0 and velo.x == 0 and velo.y == 0 and velo.z == 0 then
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self.object:set_pos(self.object:get_pos())
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return
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end
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-- We need to preserve velocity sign to properly apply drag force
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-- while moving backward
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local drag = dtime * math.sign(self.v) * (0.01 + 0.0796 * self.v * self.v)
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-- If drag is larger than velocity, then stop horizontal movement
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if math.abs(self.v) <= math.abs(drag) then
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self.v = 0
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else
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self.v = self.v - drag
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end
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local p = self.object:get_pos()
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p.y = p.y - 0.5
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local new_velo
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local new_acce = {x = 0, y = 0, z = 0}
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local iswater, nodename = is_water(p)
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if not iswater then
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local nodedef = minetest.registered_nodes[nodename]
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if (not nodedef) or nodedef.walkable then
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self.v = 0
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new_acce = {x = 0, y = 1, z = 0}
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else
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new_acce = {x = 0, y = -9.8, z = 0}
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end
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new_velo = get_velocity(self.v, self.object:get_yaw(),
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self.object:get_velocity().y)
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self.object:set_pos(self.object:get_pos())
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else
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p.y = p.y + 1
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if is_water(p) then
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local y = self.object:get_velocity().y
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if y >= 5 then
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y = 5
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elseif y < 0 then
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new_acce = {x = 0, y = 20, z = 0}
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else
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new_acce = {x = 0, y = 5, z = 0}
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end
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new_velo = get_velocity(self.v, self.object:get_yaw(), y)
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self.object:set_pos(self.object:get_pos())
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else
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new_acce = {x = 0, y = 0, z = 0}
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if math.abs(self.object:get_velocity().y) < 1 then
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local pos = self.object:get_pos()
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pos.y = math.floor(pos.y) + 0.5
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self.object:set_pos(pos)
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new_velo = get_velocity(self.v, self.object:get_yaw(), 0)
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else
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new_velo = get_velocity(self.v, self.object:get_yaw(),
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self.object:get_velocity().y)
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self.object:set_pos(self.object:get_pos())
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end
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end
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end
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self.object:set_velocity(new_velo)
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self.object:set_acceleration(new_acce)
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-- if boat comes to sudden stop, drop it
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if (self.v2 or 0) - self.v >= 3 then
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if self.driver then
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local driver_objref = minetest.get_player_by_name(self.driver)
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player_api.player_attached[self.driver] = false
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driver_objref:set_detach()
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player_api.set_animation(driver_objref, "stand" , 30)
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end
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minetest.add_item(self.object:get_pos(), "boats:boat")
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self.object:remove()
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return
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end
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self.v2 = self.v
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end
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minetest.register_entity("boats:boat", boat)
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minetest.register_craftitem("boats:boat", {
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description = S"Boat",
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inventory_image = "boats_inventory.png",
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liquids_pointable = true,
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stack_max = 1,
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groups = {rail = 1, flammable = 2},
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on_place = function(itemstack, placer, pointed_thing)
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local under = pointed_thing.under
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local node = minetest.get_node(under)
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local udef = minetest.registered_nodes[node.name]
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if udef and udef.on_rightclick and
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not (placer and placer:is_player() and
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placer:get_player_control().sneak) then
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return udef.on_rightclick(under, node, placer, itemstack,
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pointed_thing) or itemstack
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end
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if pointed_thing.type ~= "node" then
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return itemstack
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end
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if not is_water(pointed_thing.under) then
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return itemstack
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end
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pointed_thing.under.y = pointed_thing.under.y + 0.5
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local entity = minetest.add_entity(pointed_thing.under, "boats:boat")
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if entity then
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if placer then
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entity:set_yaw(placer:get_look_horizontal())
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end
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local player_name = placer and placer:get_player_name() or ""
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if not minetest.is_creative_enabled(player_name) or not sp then
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itemstack:take_item()
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end
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end
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return itemstack
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end
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})
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minetest.register_craft({
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output = "boats:boat",
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recipe = {
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{"", "", ""},
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{"group:wood", "", "group:wood"},
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{"group:wood", "group:wood", "group:wood"}
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}
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})
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minetest.register_craft({
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type = "fuel",
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recipe = "boats:boat",
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burntime = 20
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})
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