288 lines
7.2 KiB
Lua
288 lines
7.2 KiB
Lua
mcl_minecarts = {}
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mcl_minecarts.modpath = minetest.get_modpath("mcl_minecarts")
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mcl_minecarts.speed_max = 10
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function vector.floor(v)
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return {
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x = math.floor(v.x),
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y = math.floor(v.y),
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z = math.floor(v.z)
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}
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end
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dofile(mcl_minecarts.modpath.."/functions.lua")
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dofile(mcl_minecarts.modpath.."/rails.lua")
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mcl_minecarts.cart = {
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physical = false,
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collisionbox = {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
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visual = "mesh",
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mesh = "cart.x",
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visual_size = {x=1, y=1},
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textures = {"cart.png"},
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_driver = nil,
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_punched = false, -- used to re-send _velocity and position
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_velocity = {x=0, y=0, z=0}, -- only used on punch
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_old_dir = {x=0, y=0, z=0},
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_old_pos = nil,
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_old_switch = 0,
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_railtype = nil,
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}
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function mcl_minecarts.cart:on_rightclick(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 player_name = clicker:get_player_name()
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if self._driver and player_name == self._driver then
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self._driver = nil
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clicker:set_detach()
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elseif not self._driver then
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self._driver = player_name
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default.player_attached[player_name] = true
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clicker:set_attach(self.object, "", {x=0, y=3, z=0}, {x=0, y=0, z=0})
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end
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end
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function mcl_minecarts.cart:on_activate(staticdata, dtime_s)
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self.object:set_armor_groups({immortal=1})
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end
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function mcl_minecarts.cart:on_punch(puncher, time_from_last_punch, tool_capabilities, direction)
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local pos = self.object:getpos()
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if not self._railtype then
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local node = minetest.get_node(vector.floor(pos)).name
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self._railtype = minetest.get_item_group(node, "connect_to_raillike")
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end
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if not puncher or not puncher:is_player() then
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local cart_dir = mcl_minecarts:get_rail_direction(pos, {x=1, y=0, z=0}, nil, nil, self._railtype)
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if vector.equals(cart_dir, {x=0, y=0, z=0}) then
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return
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end
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self._velocity = vector.multiply(cart_dir, 3)
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self._old_pos = nil
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self._punched = true
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return
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end
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if puncher:get_player_control().sneak then
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if self._driver then
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if self._old_pos then
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self.object:setpos(self._old_pos)
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end
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default.player_attached[self._driver] = nil
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local player = minetest.get_player_by_name(self._driver)
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if player then
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player:set_detach()
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end
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end
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self.object:remove()
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puncher:get_inventory():add_item("main", "mcl_minecarts:minecart")
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return
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end
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local vel = self.object:getvelocity()
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if puncher:get_player_name() == self._driver then
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if math.abs(vel.x + vel.z) > 7 then
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return
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end
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end
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local punch_dir = mcl_minecarts:velocity_to_dir(puncher:get_look_dir())
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punch_dir.y = 0
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local cart_dir = mcl_minecarts:get_rail_direction(pos, punch_dir, nil, nil, self._railtype)
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if vector.equals(cart_dir, {x=0, y=0, z=0}) then
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return
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end
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time_from_last_punch = math.min(time_from_last_punch, tool_capabilities.full_punch_interval)
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local f = 3 * (time_from_last_punch / tool_capabilities.full_punch_interval)
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self._velocity = vector.multiply(cart_dir, f)
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self._old_pos = nil
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self._punched = true
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end
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function mcl_minecarts.cart:on_step(dtime)
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local vel = self.object:getvelocity()
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local update = {}
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if self._punched then
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vel = vector.add(vel, self._velocity)
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self.object:setvelocity(vel)
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self._old_dir.y = 0
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elseif vector.equals(vel, {x=0, y=0, z=0}) then
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return
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end
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local dir, last_switch = nil, nil
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local pos = self.object:getpos()
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if self._old_pos and not self._punched then
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local flo_pos = vector.floor(pos)
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local flo_old = vector.floor(self._old_pos)
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if vector.equals(flo_pos, flo_old) then
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return
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end
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end
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local ctrl, player = nil, nil
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if self._driver then
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player = minetest.get_player_by_name(self._driver)
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if player then
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ctrl = player:get_player_control()
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end
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end
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if self._old_pos then
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local diff = vector.subtract(self._old_pos, pos)
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for _,v in ipairs({"x","y","z"}) do
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if math.abs(diff[v]) > 1.1 then
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local expected_pos = vector.add(self._old_pos, self._old_dir)
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dir, last_switch = mcl_minecarts:get_rail_direction(pos, self._old_dir, ctrl, self._old_switch, self._railtype)
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if vector.equals(dir, {x=0, y=0, z=0}) then
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dir = false
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pos = vector.new(expected_pos)
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update.pos = true
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end
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break
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end
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end
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end
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if vel.y == 0 then
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for _,v in ipairs({"x", "z"}) do
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if vel[v] ~= 0 and math.abs(vel[v]) < 0.9 then
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vel[v] = 0
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update.vel = true
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end
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end
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end
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local cart_dir = mcl_minecarts:velocity_to_dir(vel)
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local max_vel = mcl_minecarts.speed_max
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if not dir then
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dir, last_switch = mcl_minecarts:get_rail_direction(pos, cart_dir, ctrl, self._old_switch, self._railtype)
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end
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local new_acc = {x=0, y=0, z=0}
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if vector.equals(dir, {x=0, y=0, z=0}) then
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vel = {x=0, y=0, z=0}
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update.vel = true
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else
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-- If the direction changed
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if dir.x ~= 0 and self._old_dir.z ~= 0 then
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vel.x = dir.x * math.abs(vel.z)
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vel.z = 0
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pos.z = math.floor(pos.z + 0.5)
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update.pos = true
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end
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if dir.z ~= 0 and self._old_dir.x ~= 0 then
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vel.z = dir.z * math.abs(vel.x)
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vel.x = 0
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pos.x = math.floor(pos.x + 0.5)
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update.pos = true
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end
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-- Up, down?
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if dir.y ~= self._old_dir.y then
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vel.y = dir.y * math.abs(vel.x + vel.z)
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pos = vector.round(pos)
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update.pos = true
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end
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-- Slow down or speed up..
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local acc = dir.y * -1.8
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local speed_mod = tonumber(minetest.get_meta(pos):get_string("cart_acceleration"))
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if speed_mod and speed_mod ~= 0 then
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if speed_mod > 0 then
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for _,v in ipairs({"x","y","z"}) do
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if math.abs(vel[v]) >= max_vel then
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speed_mod = 0
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break
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end
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end
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end
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acc = acc + (speed_mod * 8)
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else
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acc = acc - 0.4
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end
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new_acc = vector.multiply(dir, acc)
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end
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self.object:setacceleration(new_acc)
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self._old_pos = vector.new(pos)
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self._old_dir = vector.new(dir)
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self._old_switch = last_switch
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-- Limits
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for _,v in ipairs({"x","y","z"}) do
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if math.abs(vel[v]) > max_vel then
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vel[v] = mcl_minecarts:get_sign(vel[v]) * max_vel
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update.vel = true
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end
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end
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if self._punched then
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self._punched = false
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end
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if not (update.vel or update.pos) then
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return
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end
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local yaw = 0
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if dir.x < 0 then
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yaw = 0.5
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elseif dir.x > 0 then
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yaw = 1.5
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elseif dir.z < 0 then
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yaw = 1
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end
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self.object:setyaw(yaw * math.pi)
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local anim = {x=0, y=0}
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if dir.y == -1 then
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anim = {x=1, y=1}
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elseif dir.y == 1 then
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anim = {x=2, y=2}
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end
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self.object:set_animation(anim, 1, 0)
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self.object:setvelocity(vel)
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if update.pos then
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self.object:setpos(pos)
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end
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update = nil
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end
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minetest.register_entity("mcl_minecarts:minecart", mcl_minecarts.cart)
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minetest.register_craftitem("mcl_minecarts:minecart", {
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description = "Minecart",
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inventory_image = minetest.inventorycube("cart_top.png", "cart_side.png", "cart_side.png"),
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wield_image = "cart_side.png",
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on_place = function(itemstack, placer, pointed_thing)
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if not pointed_thing.type == "node" then
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return
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end
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if mcl_minecarts:is_rail(pointed_thing.under) then
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minetest.add_entity(pointed_thing.under, "mcl_minecarts:minecart")
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elseif mcl_minecarts:is_rail(pointed_thing.above) then
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minetest.add_entity(pointed_thing.above, "mcl_minecarts:minecart")
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else return end
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itemstack:take_item()
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return itemstack
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end,
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groups = { minecart = 1 },
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})
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minetest.register_craft({
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output = "mcl_minecarts:minecart",
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recipe = {
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{"default:steel_ingot", "", "default:steel_ingot"},
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{"default:steel_ingot", "default:steel_ingot", "default:steel_ingot"},
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},
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})
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