211 lines
6.3 KiB
Lua
211 lines
6.3 KiB
Lua
--register stoppers for movestones/pistons
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mesecon.mvps_stoppers = {}
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mesecon.mvps_unmov = {}
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function mesecon:is_mvps_stopper(node, pushdir, stack, stackid)
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local get_stopper = mesecon.mvps_stoppers[node.name]
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if type (get_stopper) == "function" then
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get_stopper = get_stopper(node, pushdir, stack, stackid)
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end
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return get_stopper
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end
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function mesecon:register_mvps_stopper(nodename, get_stopper)
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if get_stopper == nil then
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get_stopper = true
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end
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mesecon.mvps_stoppers[nodename] = get_stopper
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end
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-- Objects that cannot be moved (e.g. movestones)
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function mesecon:register_mvps_unmov(objectname)
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mesecon.mvps_unmov[objectname] = true;
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end
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function mesecon:is_mvps_unmov(objectname)
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return mesecon.mvps_unmov[objectname]
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end
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function mesecon:mvps_process_stack(stack)
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-- update mesecons for placed nodes ( has to be done after all nodes have been added )
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for _, n in ipairs(stack) do
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nodeupdate(n.pos)
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mesecon.on_placenode(n.pos, minetest.get_node(n.pos))
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mesecon:update_autoconnect(n.pos)
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end
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end
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function mesecon:mvps_get_stack(pos, dir, maximum)
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-- determine the number of nodes to be pushed
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local np = {x = pos.x, y = pos.y, z = pos.z}
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local nodes = {}
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while true do
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local nn = minetest.get_node_or_nil(np)
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if not nn or #nodes > maximum then
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-- don't push at all, something is in the way (unloaded map or too many nodes)
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return nil
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end
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if nn.name == "air"
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or (minetest.registered_nodes[nn.name]
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and minetest.registered_nodes[nn.name].liquidtype ~= "none") then --is liquid
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break
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end
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table.insert (nodes, {node = nn, pos = np})
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np = mesecon:addPosRule(np, dir)
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end
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return nodes
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end
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function mesecon:mvps_push(pos, dir, maximum) -- pos: pos of mvps; dir: direction of push; maximum: maximum nodes to be pushed
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local nodes = mesecon:mvps_get_stack(pos, dir, maximum)
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if not nodes then return end
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-- determine if one of the nodes blocks the push
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for id, n in ipairs(nodes) do
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if mesecon:is_mvps_stopper(n.node, dir, nodes, id) then
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return
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end
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end
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-- remove all nodes
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for _, n in ipairs(nodes) do
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n.meta = minetest.get_meta(n.pos):to_table()
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minetest.remove_node(n.pos)
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end
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-- update mesecons for removed nodes ( has to be done after all nodes have been removed )
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for _, n in ipairs(nodes) do
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mesecon.on_dignode(n.pos, n.node)
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mesecon:update_autoconnect(n.pos)
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end
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-- add nodes
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for _, n in ipairs(nodes) do
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np = mesecon:addPosRule(n.pos, dir)
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minetest.add_node(np, n.node)
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minetest.get_meta(np):from_table(n.meta)
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end
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local oldstack = mesecon:tablecopy(nodes)
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for i in ipairs(nodes) do
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nodes[i].pos = mesecon:addPosRule(nodes[i].pos, dir)
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end
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for _, n in ipairs(nodes) do
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mesecon.on_placenode(n.pos, n.node)
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mesecon:update_autoconnect(n.pos)
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end
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return true, nodes, oldstack
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end
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function mesecon:mvps_pull_single(pos, dir) -- pos: pos of mvps; direction: direction of pull (matches push direction for sticky pistons)
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np = mesecon:addPosRule(pos, dir)
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nn = minetest.get_node(np)
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if ((not minetest.registered_nodes[nn.name]) --unregistered node
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or minetest.registered_nodes[nn.name].liquidtype == "none") --non-liquid node
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and not mesecon:is_mvps_stopper(nn, {x = -dir.x, y = -dir.y, z = -dir.z}, {{pos = np, node = nn}}, 1) then --non-stopper node
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local meta = minetest.get_meta(np):to_table()
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minetest.remove_node(np)
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minetest.add_node(pos, nn)
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minetest.get_meta(pos):from_table(meta)
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nodeupdate(np)
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nodeupdate(pos)
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mesecon.on_dignode(np, nn)
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mesecon:update_autoconnect(np)
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mesecon:update_autoconnect(pos)
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mesecon.on_placenode(pos, nn)
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end
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return {{pos = np, node = {param2 = 0, name = "air"}}, {pos = pos, node = nn}}
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end
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function mesecon:mvps_pull_all(pos, direction) -- pos: pos of mvps; direction: direction of pull
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local lpos = {x=pos.x-direction.x, y=pos.y-direction.y, z=pos.z-direction.z} -- 1 away
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local lnode = minetest.get_node(lpos)
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local lpos2 = {x=pos.x-direction.x*2, y=pos.y-direction.y*2, z=pos.z-direction.z*2} -- 2 away
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local lnode2 = minetest.get_node(lpos2)
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--avoid pulling solid nodes
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if lnode.name ~= "ignore"
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and lnode.name ~= "air"
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and ((not minetest.registered_nodes[lnode.name])
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or minetest.registered_nodes[lnode.name].liquidtype == "none") then
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return
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end
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--avoid pulling empty or liquid nodes
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if lnode2.name == "ignore"
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or lnode2.name == "air"
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or (minetest.registered_nodes[lnode2.name]
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and minetest.registered_nodes[lnode2.name].liquidtype ~= "none") then
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return
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end
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local oldpos = {x=lpos2.x + direction.x, y=lpos2.y + direction.y, z=lpos2.z + direction.z}
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repeat
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lnode2 = minetest.get_node(lpos2)
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minetest.add_node(oldpos, {name=lnode2.name})
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nodeupdate(oldpos)
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oldpos = {x=lpos2.x, y=lpos2.y, z=lpos2.z}
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lpos2.x = lpos2.x-direction.x
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lpos2.y = lpos2.y-direction.y
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lpos2.z = lpos2.z-direction.z
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lnode = minetest.get_node(lpos2)
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until lnode.name == "air"
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or lnode.name == "ignore"
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or (minetest.registered_nodes[lnode2.name]
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and minetest.registered_nodes[lnode2.name].liquidtype ~= "none")
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minetest.remove_node(oldpos)
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end
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function mesecon:mvps_move_objects(pos, dir, nodestack)
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local objects_to_move = {}
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-- Move object at tip of stack
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local pushpos = mesecon:addPosRule(pos, -- get pos at tip of stack
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{x = dir.x * #nodestack,
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y = dir.y * #nodestack,
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z = dir.z * #nodestack})
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local objects = minetest.get_objects_inside_radius(pushpos, 1)
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for _, obj in ipairs(objects) do
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table.insert(objects_to_move, obj)
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end
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-- Move objects lying/standing on the stack (before it was pushed - oldstack)
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if tonumber(minetest.setting_get("movement_gravity")) > 0 and dir.y == 0 then
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-- If gravity positive and dir horizontal, push players standing on the stack
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for _, n in ipairs(nodestack) do
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local p_above = mesecon:addPosRule(n.pos, {x=0, y=1, z=0})
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local objects = minetest.get_objects_inside_radius(p_above, 1)
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for _, obj in ipairs(objects) do
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table.insert(objects_to_move, obj)
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end
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end
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end
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for _, obj in ipairs(objects_to_move) do
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local entity = obj:get_luaentity()
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if not entity or not mesecon:is_mvps_unmov(entity.name) then
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local np = mesecon:addPosRule(obj:getpos(), dir)
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--move only if destination is not solid
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local nn = minetest.get_node(np)
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if not ((not minetest.registered_nodes[nn.name])
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or minetest.registered_nodes[nn.name].walkable) then
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obj:setpos(np)
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end
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end
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end
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end
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mesecon:register_mvps_stopper("default:chest_locked")
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mesecon:register_mvps_stopper("default:furnace")
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