forked from VoxeLibre/VoxeLibre
Complete rewrite of minecart movement that resolves MineClone2/MineClone2#2446 and MineClone2/MineClone2#247 (comment) but has a bug where carts will synchronize movements that I am still investigating
This commit is contained in:
parent
960309462f
commit
6de06945c1
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@ -141,5 +141,5 @@ function mcl_minecarts:get_rail_direction(pos_, dir, ctrl, old_switch, railtype)
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return cur
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end
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end
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return vector.new(0,0,0) --{x=0, y=0, z=0}
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return vector.new(0,0,0)
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end
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@ -207,9 +207,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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_old_pos = nil,
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_old_vel = {x=0, y=0, z=0},
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_old_switch = 0,
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_staticdata = {
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railtype = nil,
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},
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_staticdata = nil,
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}
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function cart:on_activate(staticdata, dtime_s)
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@ -221,6 +219,8 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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data.railtype = data._railtype
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data._railtype = nil
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end
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-- Fix up types
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data.dir = vector.new(data.dir)
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self._staticdata = data
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end
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@ -237,18 +237,28 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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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:get_pos()
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if not self._staticdata.railtype then
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local node = minetest.get_node(vector.floor(pos)).name
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self._staticdata.railtype = minetest.get_item_group(node, "connect_to_raillike")
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local staticdata = self._staticdata
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local pos = staticdata.connected_at
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if not pos then
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print("TODO: handle detached cart behavior")
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return
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end
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-- Fix railtype field
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if not staticdata.railtype then
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local node = minetest.get_node(vector.floor(pos)).name
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staticdata.railtype = minetest.get_item_group(node, "connect_to_raillike")
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end
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-- Handle punches by something other than the player
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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._staticdata.railtype)
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local cart_dir = mcl_minecarts:get_rail_direction(pos, {x=1, y=0, z=0}, nil, nil, staticdata.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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mcl_minecarts:set_velocity(self, cart_dir)
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staticdata.dir = cart_dir
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self._punched = true
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return
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end
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@ -288,6 +298,7 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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return
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end
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-- Handle player punches
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local vel = self.object:get_velocity()
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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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@ -297,206 +308,168 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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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._staticdata.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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staticdata.dir = cart_dir
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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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mcl_minecarts:set_velocity(self, cart_dir, f)
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-- Perform acceleration here
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staticdata.velocity = (staticdata.velocity or 0 ) + f
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local max_vel = mcl_minecarts.speed_max
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if staticdata.velocity > max_vel then
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staticdata.velocity = max_vel
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end
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end
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cart.on_activate_by_rail = on_activate_by_rail
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local passenger_attach_position = vector.new(0, -1.75, 0)
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local function do_movement_step( self )
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local vel = self.object:get_velocity()
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local pos, rou_pos, node = self.object:get_pos()
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local update = {}
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local function do_movement_step(self, distance)
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local staticdata = self._staticdata
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local pos = self.object:get_pos()
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local dir = staticdata.dir or vector.new(1,0,0)
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dir = vector.new(dir)
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local dir, last_switch = nil, nil
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if not pos then
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pos = self.object:get_pos()
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end
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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) and (not has_fuel) then
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return
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-- Prevent querying the same node over and over again
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-- Calculate raw location
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local next_dir,last_switch = mcl_minecarts:get_rail_direction(pos, dir, nil, nil, staticdata.railtype)
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next_dir = vector.new(next_dir) -- Needed to isolate the carts from one another
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local next_pos = vector.new(pos + next_dir * distance)
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-- Fix up position
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if next_dir.x == 0 then next_pos.x = math.floor(next_pos.x+0.5) end
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if next_dir.y == 0 then next_pos.y = math.floor(next_pos.y+0.5) end
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if next_dir.z == 0 then next_pos.z = math.floor(next_pos.z+0.5) end
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-- Direction flipped, stop
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if next_dir == dir * -1 then
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print("Stopping cart")
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-- TODO: detach the cart if there isn't a stop after the rail
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staticdata.velocity = 0
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next_pos = vector.round(next_pos + dir)
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end
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if not rou_pos then
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rou_pos = vector.round(pos)
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end
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local rou_old = vector.round(self._old_pos)
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if not node then
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node = minetest.get_node(rou_pos)
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end
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local node_old = minetest.get_node(rou_old)
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-- Update detector rails
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if node.name == "mcl_minecarts:detector_rail" then
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local newnode = {name="mcl_minecarts:detector_rail_on", param2 = node.param2}
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minetest.swap_node(rou_pos, newnode)
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mesecon.receptor_on(rou_pos)
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end
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if node_old.name == "mcl_minecarts:detector_rail_on" then
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local newnode = {name="mcl_minecarts:detector_rail", param2 = node_old.param2}
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minetest.swap_node(rou_old, newnode)
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mesecon.receptor_off(rou_old)
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end
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-- Activate minecart if on activator rail
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if node_old.name == "mcl_minecarts:activator_rail_on" and self.on_activate_by_rail then
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self:on_activate_by_rail()
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end
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end
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-- Stop cart if velocity vector flips
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if self._old_vel and self._old_vel.y == 0 and
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(self._old_vel.x * vel.x < 0 or self._old_vel.z * vel.z < 0) then
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self._old_vel = {x = 0, y = 0, z = 0}
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self._old_pos = pos
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self.object:set_velocity(vector.new())
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self.object:set_acceleration(vector.new())
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return
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end
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self._old_vel = vector.new(vel)
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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._staticdata.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._staticdata.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}) and not has_fuel 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 friction = 0.4
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local ndef = minetest.registered_nodes[minetest.get_node(pos).name]
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local speed_mod = ndef and ndef._rail_acceleration
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acc = acc - friction
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if has_fuel then
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acc = acc + 0.6
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end
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if speed_mod and speed_mod ~= 0 then
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acc = acc + speed_mod + friction
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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:set_acceleration(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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new_acc[v] = 0
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update.vel = true
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end
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end
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if update.pos or self._punched then
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-- Update cart orientation
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local yaw = 0
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if dir.x < 0 then
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if next_dir.x < 0 then
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yaw = 0.5
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elseif dir.x > 0 then
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elseif next_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:set_yaw(yaw * math.pi)
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self.object:set_yaw( yaw * math.pi )
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-- Update cart position
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local next_pos_rounded = vector.round(next_pos)
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staticdata.connected_at = next_pos_rounded
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staticdata.dir = next_dir
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self.object:move_to(next_pos)
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-- Handle track interactions
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local pos_rounded = vector.round(pos)
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if pos_rounded ~= next_pos_rounded then
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local old_node_name = minetest.get_node(pos_rounded).name
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local old_node_def = minetest.registered_nodes[old_node_name]
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if old_node_def._mcl_minecarts_on_leave then
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old_node_def._mcl_minecarts_on_leave( pos_rounded, self )
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end
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if self._punched then
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local new_node_name = minetest.get_node(next_pos_rounded).name
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local new_node_def = minetest.registered_nodes[new_node_name]
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if new_node_def._mcl_minecarts_on_enter then
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new_node_def._mcl_minecarts_on_enter( next_pos_rounded, self )
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end
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end
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--print("pos="..tostring(next_pos)..",dir="..tostring(next_dir)..",staticdata="..tostring(staticdata))
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end
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local function process_acceleration(self, timestep)
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local staticdata = self._staticdata
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local pos = self.object:get_pos()
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local node_name = minetest.get_node(pos).name
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local node_def = minetest.registered_nodes[node_name]
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if self._go_forward then
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self._acceleration = 2
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elseif self._brake then
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self._acceleration = -1.5
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elseif self._punched then
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self._acceleration = 2
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elseif self._fueltime and self._fueltime > 0 then
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self._acceleration = 0.6
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else
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self._acceleration = node_def._rail_acceleration or -0.4
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end
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if self._acceleration > 0 and staticdata.velocity < 0.1 then
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staticdata.velocity = 0.1
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end
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if math.abs(self._acceleration) > 0.1 then
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staticdata.velocity = ( staticdata.velocity or 0 ) + self._acceleration * timestep
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local max_vel = mcl_minecarts.speed_max
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if staticdata.velocity > max_vel then
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staticdata.velocity = max_vel
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elseif staticdata.velocity < 0.1 then
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staticdata.velocity = 0
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end
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end
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if false and staticdata.velocity > 0 then
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print( "acceleration="..tostring(self._acceleration)..",velocity="..tostring(staticdata.velocity)..
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",timestep="..tostring(timestep))
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end
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end
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local function do_movement( self, dtime )
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local staticdata = self._staticdata
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local total_distance = dtime * ( staticdata.velocity or 0 )
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local remaining_distance = total_distance
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local max_step_distance = 0.5
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local steps = math.ceil(total_distance / max_step_distance )
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process_acceleration(self,dtime)
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for i = 1,steps do
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local step_distance = max_step_distance
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if remaining_distance < max_step_distance then
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step_distance = remaining_distance
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remaining_distance = 0
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else
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remaining_distance = remaining_distance - max_step_distance
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end
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if i ~= 1 then
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-- Go faster/slower
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local timestep = dtime * step_distance / total_distance
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process_acceleration(self, timestep)
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end
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do_movement_step(self,step_distance)
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end
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-- Clear punched flag now that movement for this step has been completed
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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:set_velocity(vel)
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if update.pos then
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self.object:set_pos(pos)
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end
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end
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function cart:on_step(dtime)
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hopper_take_item(self, dtime)
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local staticdata = self._staticdata
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local vel = self.object:get_velocity()
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local pos, rou_pos, node = self.object:get_pos()
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local update = {}
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local acceleration = 0
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-- Controls
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local ctrl, player = nil, nil
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@ -509,6 +482,10 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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detach_driver(self)
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return
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end
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-- Experimental controls
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self._go_forward = ctrl.up
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self._brake = ctrl.down
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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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@ -517,15 +494,9 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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end
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end
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-- Go faster when punched
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if self._punched then
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vel = vector.add(vel, self._velocity)
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self.object:set_velocity(vel)
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self._old_dir.y = 0
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elseif vector.equals(vel, {x=0, y=0, z=0}) and (not has_fuel) then
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return
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end
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do_movement(self, dtime)
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-- TODO: move this into do_movement_step
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-- Drop minecart if it collides with a cactus node
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local r = 0.6
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for _, node_pos in pairs({{r, 0}, {0, r}, {-r, 0}, {0, -r}}) do
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@ -539,20 +510,6 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
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end
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end
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-- Debug
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if false then
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local node = minetest.get_node(pos).name
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local dist = 0
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if pos and self._old_pos then
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dist = vector.distance(pos,self._old_pos)
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end
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if dist > 1.5 then
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print("pos="..tostring(pos)..",dist="..tostring(dist)..",node="..tostring(node)..",old_pos="..
|
||||
tostring(self._old_pos)..",vel="..tostring(vel))
|
||||
end
|
||||
-- Rail jumps can occur when dist > 1.5, because the cart can skip over a gap in track
|
||||
end
|
||||
|
||||
-- Grab mob
|
||||
if math.random(1,20) > 15 and not self._passenger then
|
||||
if self.name == "mcl_minecarts:minecart" then
|
||||
|
|
@ -673,8 +630,6 @@ local function register_entity(entity_id, mesh, textures, drop, on_rightclick, o
|
|||
self._blinktimer = tnt.BLINKTIMER
|
||||
end
|
||||
end
|
||||
|
||||
do_movement_step(self)
|
||||
end
|
||||
|
||||
function cart:get_staticdata()
|
||||
|
|
@ -701,30 +656,28 @@ function mcl_minecarts.place_minecart(itemstack, pointed_thing, placer)
|
|||
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:set_yaw(minetest.dir_to_yaw(cart_dir))
|
||||
|
||||
-- Update static data
|
||||
local le = cart:get_luaentity()
|
||||
if le then
|
||||
le._staticdata.railtype = railtype
|
||||
le._staticdata = {
|
||||
railtype = railtype,
|
||||
connected_at = railpos,
|
||||
dir = vector.new(cart_dir),
|
||||
velocity = 0,
|
||||
}
|
||||
end
|
||||
local cart_dir
|
||||
if node.name == "mcl_minecarts:golden_rail_on" then
|
||||
cart_dir = mcl_minecarts:get_start_direction(railpos)
|
||||
|
||||
-- Handle track behaviors
|
||||
local node_def = minetest.registered_nodes[node.name]
|
||||
if node_def._mcl_minecarts_on_enter then
|
||||
node_def._mcl_minecarts_on_enter(railpos, cart)
|
||||
end
|
||||
if cart_dir then
|
||||
mcl_minecarts:set_velocity(le, cart_dir)
|
||||
else
|
||||
cart_dir = mcl_minecarts:get_rail_direction(railpos, {x=1, y=0, z=0}, nil, nil, railtype)
|
||||
end
|
||||
cart:set_yaw(minetest.dir_to_yaw(cart_dir))
|
||||
|
||||
local pname = ""
|
||||
if placer then
|
||||
|
|
|
|||
|
|
@ -181,6 +181,11 @@ register_rail("mcl_minecarts:activator_rail_on",
|
|||
},
|
||||
|
||||
},
|
||||
_mcl_minecarts_on_enter = function(pos, cart)
|
||||
if cart.on_activate_by_rail then
|
||||
cart:on_activate_by_rail()
|
||||
end
|
||||
end,
|
||||
drop = "mcl_minecarts:activator_rail",
|
||||
},
|
||||
false
|
||||
|
|
@ -200,6 +205,16 @@ register_rail("mcl_minecarts:detector_rail",
|
|||
rules = rail_rules_short,
|
||||
},
|
||||
},
|
||||
_mcl_minecarts_on_enter = function(pos, cart)
|
||||
local node = minetest.get_node(pos)
|
||||
|
||||
local newnode = {
|
||||
name = "mcl_minecarts:detector_rail_on",
|
||||
param2 = node.param2
|
||||
}
|
||||
minetest.swap_node( pos, newnode )
|
||||
mesecon.receptor_on(pos)
|
||||
end,
|
||||
}
|
||||
)
|
||||
|
||||
|
|
@ -214,6 +229,16 @@ register_rail("mcl_minecarts:detector_rail_on",
|
|||
rules = rail_rules_short,
|
||||
},
|
||||
},
|
||||
_mcl_minecarts_on_leave = function(pos, cart)
|
||||
local node = minetest.get_node(pos)
|
||||
|
||||
local newnode = {
|
||||
name = "mcl_minecarts:detector_rail",
|
||||
param2 = node.param2
|
||||
}
|
||||
minetest.swap_node( pos, newnode )
|
||||
mesecon.receptor_off(pos)
|
||||
end,
|
||||
drop = "mcl_minecarts:detector_rail",
|
||||
},
|
||||
false
|
||||
|
|
|
|||
Loading…
Reference in New Issue