476 lines
13 KiB
Lua
476 lines
13 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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local vector_floor = function(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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local function register_entity(entity_id, mesh, textures, drop, on_rightclick)
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local cart = {
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physical = false,
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collisionbox = {-10/16., -0.5, -10/16, 10/16, 0.25, 10/16},
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visual = "mesh",
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mesh = mesh,
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visual_size = {x=1, y=1},
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textures = textures,
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on_rightclick = on_rightclick,
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_driver = nil, -- player who sits in and controls the minecart (only for minecart!)
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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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_start_pos = nil, -- Used to calculate distance for “On A Rail” achievement
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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 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 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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mcl_player.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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if not minetest.settings:get_bool("creative_mode") then
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for d=1, #drop do
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minetest.add_item(self.object:getpos(), drop[d])
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end
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end
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self.object:remove()
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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 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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-- Give achievement when player reached a distance of 1000 nodes from the start position
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if self._driver and (vector.distance(self._start_pos, pos) >= 1000) then
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awards.unlock(self._driver, "mcl:onARail")
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end
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if update.pos or self._punched then
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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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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 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(entity_id, cart)
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end
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local register_craftitem = function(itemstring, entity_id, description, longdesc, usagehelp, icon)
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local def = {
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stack_max = 1,
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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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-- Call on_rightclick if the pointed node defines it
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local node = minetest.get_node(pointed_thing.under)
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if placer and not placer:get_player_control().sneak then
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if minetest.registered_nodes[node.name] and minetest.registered_nodes[node.name].on_rightclick then
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return minetest.registered_nodes[node.name].on_rightclick(pointed_thing.under, node, placer, itemstack) or itemstack
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end
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end
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local railpos
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if mcl_minecarts:is_rail(pointed_thing.under) then
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railpos = pointed_thing.under
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elseif mcl_minecarts:is_rail(pointed_thing.above) then
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railpos = pointed_thing.under
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else
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return
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end
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local cart = minetest.add_entity(railpos, entity_id)
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local railtype = minetest.get_item_group(node.name, "connect_to_raillike")
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local cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype)
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cart:setyaw(minetest.dir_to_yaw(cart_dir))
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if not minetest.settings:get_bool("creative_mode") then
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itemstack:take_item()
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end
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return itemstack
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end,
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groups = { minecart = 1, transport = 1},
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}
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def.description = description
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def._doc_items_longdesc = longdesc
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def._doc_items_usagehelp = usagehelp
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def.inventory_image = icon
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def.wield_image = icon
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minetest.register_craftitem(itemstring, def)
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end
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local function register_minecart(itemstring, entity_id, description, longdesc, usagehelp, mesh, textures, icon, drop, on_rightclick)
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register_entity(entity_id, mesh, textures, drop, on_rightclick)
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register_craftitem(itemstring, entity_id, description, longdesc, usagehelp, icon)
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if minetest.get_modpath("doc_identifier") ~= nil then
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doc.sub.identifier.register_object(entity_id, "craftitems", itemstring)
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end
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end
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-- Minecart
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register_minecart(
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"mcl_minecarts:minecart",
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"mcl_minecarts:minecart",
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"Minecart",
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"Minecarts can be used for a quick transportion on rails." .. "\n" ..
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"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.",
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"You can place the minecart on rails. Right-click it to enter it. Punch it to get it moving." .. "\n" ..
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"To obtain the minecart, punch it while holding down the sneak key.",
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"mcl_minecarts_minecart.b3d",
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{"mcl_minecarts_minecart.png"},
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"mcl_minecarts_minecart_normal.png",
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{"mcl_minecarts:minecart"},
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function(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 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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self._start_pos = 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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self._start_pos = self.object:getpos()
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mcl_player.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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)
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-- Minecart with Chest
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register_minecart(
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"mcl_minecarts:chest_minecart",
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"mcl_minecarts:chest_minecart",
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"Minecart with Chest",
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nil, nil,
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"mcl_minecarts_minecart_chest.b3d",
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{ "mcl_chests_normal.png", "mcl_minecarts_minecart.png" },
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"mcl_minecarts_minecart_chest.png",
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{"mcl_minecarts:minecart", "mcl_chests:chest"})
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-- Minecart with Furnace
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register_minecart(
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"mcl_minecarts:furnace_minecart",
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"mcl_minecarts:furnace_minecart",
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"Minecart with Furnace",
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nil, nil,
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"mcl_minecarts_minecart_block.b3d",
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{
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"default_furnace_top.png",
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"default_furnace_top.png",
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"default_furnace_front.png",
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"default_furnace_side.png",
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"default_furnace_side.png",
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"default_furnace_side.png",
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"mcl_minecarts_minecart.png",
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},
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"mcl_minecarts_minecart_furnace.png",
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{"mcl_minecarts:minecart", "mcl_furnaces:furnace"}
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)
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-- Minecart with Command Block
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register_minecart(
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"mcl_minecarts:command_block_minecart",
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"mcl_minecarts:command_block_minecart",
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"Minecart with Command Block",
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nil, nil,
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"mcl_minecarts_minecart_block.b3d",
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{
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"jeija_commandblock_off.png^[verticalframe:2:0",
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"mcl_minecarts_minecart.png",
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},
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"mcl_minecarts_minecart_command_block.png",
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{"mcl_minecarts:minecart"}
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)
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-- Minecart with Hopper
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register_minecart(
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"mcl_minecarts:hopper_minecart",
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"mcl_minecarts:hopper_minecart",
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"Minecart with Hopper",
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nil, nil,
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"mcl_minecarts_minecart_hopper.b3d",
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{
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"mcl_hoppers_hopper_inside.png",
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"mcl_minecarts_minecart.png",
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"mcl_hoppers_hopper_outside.png",
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"mcl_hoppers_hopper_top.png",
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},
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"mcl_minecarts_minecart_hopper.png",
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{"mcl_minecarts:minecart", "mcl_hoppers:hopper"}
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)
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-- Minecart with TNT
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register_minecart(
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"mcl_minecarts:tnt_minecart",
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"mcl_minecarts:tnt_minecart",
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"Minecart with TNT",
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nil, nil,
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"mcl_minecarts_minecart_block.b3d",
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{
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"default_tnt_top.png",
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"default_tnt_bottom.png",
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"default_tnt_side.png",
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"default_tnt_side.png",
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"default_tnt_side.png",
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"default_tnt_side.png",
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"mcl_minecarts_minecart.png",
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},
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"mcl_minecarts_minecart_tnt.png",
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{"mcl_minecarts:minecart", "mcl_tnt:tnt"}
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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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{"mcl_core:iron_ingot", "", "mcl_core:iron_ingot"},
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{"mcl_core:iron_ingot", "mcl_core:iron_ingot", "mcl_core:iron_ingot"},
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},
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})
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minetest.register_craft({
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output = "mcl_minecarts:hopper_minecart",
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recipe = {
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{"mcl_hoppers:hopper"},
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{"mcl_minecarts:minecart"},
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},
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})
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minetest.register_craft({
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output = "mcl_minecarts:chest_minecart",
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recipe = {
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{"mcl_chests:chest"},
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{"mcl_minecarts:minecart"},
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},
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})
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minetest.register_craft({
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output = "mcl_minecarts:tnt_minecart",
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recipe = {
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{"mcl_tnt:tnt"},
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{"mcl_minecarts:minecart"},
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},
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})
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minetest.register_craft({
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output = "mcl_minecarts:furnace_minecart",
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recipe = {
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{"mcl_furnaces:furnace"},
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{"mcl_minecarts:minecart"},
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},
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})
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