289 lines
8.5 KiB
Lua
289 lines
8.5 KiB
Lua
--register stoppers for movestones/pistons
|
||
|
||
mesecon.mvps_stoppers = {}
|
||
mesecon.on_mvps_move = {}
|
||
mesecon.mvps_unmov = {}
|
||
|
||
--- Objects (entities) that cannot be moved
|
||
function mesecon.register_mvps_unmov(objectname)
|
||
mesecon.mvps_unmov[objectname] = true;
|
||
end
|
||
|
||
function mesecon.is_mvps_unmov(objectname)
|
||
return mesecon.mvps_unmov[objectname]
|
||
end
|
||
|
||
-- Nodes that cannot be pushed / pulled by movestones, pistons
|
||
function mesecon.is_mvps_stopper(node, pushdir, stack, stackid)
|
||
-- unknown nodes are always stoppers
|
||
if not minetest.registered_nodes[node.name] then
|
||
return true
|
||
end
|
||
|
||
local get_stopper = mesecon.mvps_stoppers[node.name]
|
||
if type (get_stopper) == "function" then
|
||
get_stopper = get_stopper(node, pushdir, stack, stackid)
|
||
end
|
||
|
||
return get_stopper
|
||
end
|
||
|
||
function mesecon.register_mvps_stopper(nodename, get_stopper)
|
||
if get_stopper == nil then
|
||
get_stopper = true
|
||
end
|
||
mesecon.mvps_stoppers[nodename] = get_stopper
|
||
end
|
||
|
||
-- Functions to be called on mvps movement
|
||
function mesecon.register_on_mvps_move(callback)
|
||
mesecon.on_mvps_move[#mesecon.on_mvps_move+1] = callback
|
||
end
|
||
|
||
local function on_mvps_move(moved_nodes)
|
||
for _, callback in ipairs(mesecon.on_mvps_move) do
|
||
callback(moved_nodes)
|
||
end
|
||
end
|
||
|
||
function mesecon.mvps_process_stack(stack)
|
||
-- update mesecons for placed nodes ( has to be done after all nodes have been added )
|
||
for _, n in ipairs(stack) do
|
||
mesecon.on_placenode(n.pos, minetest.get_node(n.pos))
|
||
end
|
||
end
|
||
|
||
-- tests if the node can be pushed into, e.g. air, water, grass
|
||
local function node_replaceable(name)
|
||
if minetest.registered_nodes[name] then
|
||
return minetest.registered_nodes[name].buildable_to or false
|
||
end
|
||
|
||
return false
|
||
end
|
||
|
||
function mesecon.mvps_get_stack(pos, dir, maximum, all_pull_sticky)
|
||
-- determine the number of nodes to be pushed
|
||
local nodes = {}
|
||
local frontiers = {pos}
|
||
|
||
while #frontiers > 0 do
|
||
local np = frontiers[1]
|
||
local nn = minetest.get_node(np)
|
||
if nn.name == "ignore" then return nil end
|
||
|
||
if not node_replaceable(nn.name) then
|
||
table.insert(nodes, {node = nn, pos = np})
|
||
if #nodes > maximum then return nil end
|
||
|
||
-- add connected nodes to frontiers, connected is a vector list
|
||
-- the vectors must be absolute positions
|
||
local connected = {}
|
||
if minetest.registered_nodes[nn.name]
|
||
and minetest.registered_nodes[nn.name].mvps_sticky then
|
||
connected = minetest.registered_nodes[nn.name].mvps_sticky(np, nn)
|
||
end
|
||
|
||
table.insert(connected, vector.add(np, dir))
|
||
|
||
-- If adjacent node is sticky block and connects add that
|
||
-- position to the connected table
|
||
for _, r in ipairs(mesecon.rules.alldirs) do
|
||
local adjpos = vector.add(np, r)
|
||
local adjnode = minetest.get_node(adjpos)
|
||
if adjnode.name == "ignore" then return nil end
|
||
if minetest.registered_nodes[adjnode.name]
|
||
and minetest.registered_nodes[adjnode.name].mvps_sticky then
|
||
local sticksto = minetest.registered_nodes[adjnode.name]
|
||
.mvps_sticky(adjpos, adjnode)
|
||
|
||
-- connects to this position?
|
||
for _, link in ipairs(sticksto) do
|
||
if vector.equals(link, np) then
|
||
table.insert(connected, adjpos)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
if all_pull_sticky then
|
||
table.insert(connected, vector.subtract(np, dir))
|
||
end
|
||
|
||
-- Make sure there are no duplicates in frontiers / nodes before
|
||
-- adding nodes in "connected" to frontiers
|
||
for _, cp in ipairs(connected) do
|
||
local duplicate = false
|
||
for _, rp in ipairs(nodes) do
|
||
if vector.equals(cp, rp.pos) then
|
||
duplicate = true
|
||
end
|
||
end
|
||
for _, fp in ipairs(frontiers) do
|
||
if vector.equals(cp, fp) then
|
||
duplicate = true
|
||
end
|
||
end
|
||
if not duplicate then
|
||
table.insert(frontiers, cp)
|
||
end
|
||
end
|
||
end
|
||
table.remove(frontiers, 1)
|
||
end
|
||
|
||
return nodes
|
||
end
|
||
|
||
function mesecon.mvps_push(pos, dir, maximum, owner)
|
||
return mesecon.mvps_push_or_pull(pos, dir, dir, maximum, nil, owner)
|
||
end
|
||
|
||
function mesecon.mvps_pull_all(pos, dir, maximum, owner)
|
||
return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum, true, owner)
|
||
end
|
||
|
||
function mesecon.mvps_pull_single(pos, dir, maximum, owner)
|
||
return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum, nil, owner)
|
||
end
|
||
|
||
-- pos: pos of mvps; stackdir: direction of building the stack
|
||
-- movedir: direction of actual movement
|
||
-- maximum: maximum nodes to be pushed
|
||
-- all_pull_sticky: All nodes are sticky in the direction that they are pulled from
|
||
function mesecon.mvps_push_or_pull(pos, stackdir, movedir, maximum, all_pull_sticky, owner)
|
||
local owner = tostring(owner ~= "" and owner or "mvps")
|
||
local nodes = mesecon.mvps_get_stack(pos, movedir, maximum, all_pull_sticky)
|
||
|
||
if not nodes then return end
|
||
-- determine if one of the nodes blocks the push / pull
|
||
for id, n in ipairs(nodes) do
|
||
if mesecon.is_mvps_stopper(n.node, movedir, nodes, id)
|
||
or minetest.is_protected(n.pos, owner) then
|
||
return
|
||
end
|
||
end
|
||
|
||
-- remove all nodes
|
||
for _, n in ipairs(nodes) do
|
||
n.meta = minetest.get_meta(n.pos):to_table()
|
||
local node_timer = minetest.get_node_timer(n.pos)
|
||
if node_timer:is_started() then
|
||
n.node_timer = {node_timer:get_timeout(), node_timer:get_elapsed()}
|
||
end
|
||
minetest.remove_node(n.pos)
|
||
end
|
||
|
||
-- update mesecons for removed nodes ( has to be done after all nodes have been removed )
|
||
for _, n in ipairs(nodes) do
|
||
mesecon.on_dignode(n.pos, n.node)
|
||
end
|
||
|
||
-- add nodes
|
||
for _, n in ipairs(nodes) do
|
||
local np = vector.add(n.pos, movedir)
|
||
|
||
minetest.set_node(np, n.node)
|
||
minetest.get_meta(np):from_table(n.meta)
|
||
if n.node_timer then
|
||
minetest.get_node_timer(np):set(unpack(n.node_timer))
|
||
end
|
||
end
|
||
|
||
local moved_nodes = {}
|
||
local oldstack = mesecon.tablecopy(nodes)
|
||
for i in ipairs(nodes) do
|
||
moved_nodes[i] = {}
|
||
moved_nodes[i].oldpos = nodes[i].pos
|
||
nodes[i].pos = vector.add(nodes[i].pos, movedir)
|
||
moved_nodes[i].pos = nodes[i].pos
|
||
moved_nodes[i].node = nodes[i].node
|
||
moved_nodes[i].meta = nodes[i].meta
|
||
moved_nodes[i].node_timer = nodes[i].node_timer
|
||
end
|
||
|
||
on_mvps_move(moved_nodes)
|
||
|
||
return true, nodes, oldstack
|
||
end
|
||
|
||
function mesecon.mvps_move_objects(pos, dir, nodestack, movefactor)
|
||
local objects_to_move = {}
|
||
local dir_k
|
||
local dir_l
|
||
for k, v in pairs(dir) do
|
||
if v ~= 0 then
|
||
dir_k = k
|
||
dir_l = v
|
||
break
|
||
end
|
||
end
|
||
movefactor = movefactor or 1
|
||
dir = vector.multiply(dir, movefactor)
|
||
for id, obj in pairs(minetest.object_refs) do
|
||
local obj_pos = obj:getpos()
|
||
local cbox = obj:get_properties().collisionbox
|
||
local min_pos = vector.add(obj_pos, vector.new(cbox[1], cbox[2], cbox[3]))
|
||
local max_pos = vector.add(obj_pos, vector.new(cbox[4], cbox[5], cbox[6]))
|
||
local ok = true
|
||
for k, v in pairs(pos) do
|
||
local edge1, edge2
|
||
if k ~= dir_k then
|
||
edge1 = v - 0.51 -- More than 0.5 to move objects near to the stack.
|
||
edge2 = v + 0.51
|
||
else
|
||
edge1 = v - 0.5 * dir_l
|
||
edge2 = v + (#nodestack + 0.5 * movefactor) * dir_l
|
||
-- Make sure, edge1 is bigger than edge2:
|
||
if edge1 > edge2 then
|
||
edge1, edge2 = edge2, edge1
|
||
end
|
||
end
|
||
if min_pos[k] > edge2 or max_pos[k] < edge1 then
|
||
ok = false
|
||
break
|
||
end
|
||
end
|
||
if ok then
|
||
local ent = obj:get_luaentity()
|
||
if obj:is_player() or (ent and not mesecon.is_mvps_unmov(ent.name)) then
|
||
local np = vector.add(obj_pos, dir)
|
||
-- Move only if destination is not solid or object is inside stack:
|
||
local nn = minetest.get_node(np)
|
||
local node_def = minetest.registered_nodes[nn.name]
|
||
local obj_offset = dir_l * (obj_pos[dir_k] - pos[dir_k])
|
||
if (node_def and not node_def.walkable) or
|
||
(obj_offset >= 0 and
|
||
obj_offset <= #nodestack - 0.5) then
|
||
obj:move_to(np)
|
||
end
|
||
end
|
||
end
|
||
end
|
||
end
|
||
|
||
-- Never push into unloaded blocks. Don’t try to pull from them, either.
|
||
-- TODO: load blocks instead, as with wires.
|
||
mesecon.register_mvps_stopper("ignore")
|
||
|
||
mesecon.register_mvps_stopper("doors:door_steel_b_1")
|
||
mesecon.register_mvps_stopper("doors:door_steel_t_1")
|
||
mesecon.register_mvps_stopper("doors:door_steel_b_2")
|
||
mesecon.register_mvps_stopper("doors:door_steel_t_2")
|
||
mesecon.register_mvps_stopper("default:chest_locked")
|
||
mesecon.register_on_mvps_move(mesecon.move_hot_nodes)
|
||
mesecon.register_on_mvps_move(function(moved_nodes)
|
||
for i = 1, #moved_nodes do
|
||
local moved_node = moved_nodes[i]
|
||
mesecon.on_placenode(moved_node.pos, moved_node.node)
|
||
minetest.after(0, function()
|
||
minetest.check_for_falling(moved_node.oldpos)
|
||
minetest.check_for_falling(moved_node.pos)
|
||
end)
|
||
local node_def = minetest.registered_nodes[moved_node.node.name]
|
||
if node_def and node_def.mesecon and node_def.mesecon.on_mvps_move then
|
||
node_def.mesecon.on_mvps_move(moved_node.pos, moved_node.node,
|
||
moved_node.oldpos, moved_node.meta)
|
||
end
|
||
end
|
||
end)
|