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Add protection testing to the Piston and Movestones.

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Beha
2017-01-09 09:16:10 -05:00
parent 7415036f5b
commit 12aac53339
3 changed files with 53 additions and 16 deletions
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45
mesecons_mvps/init.lua
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@ -135,29 +135,52 @@ function mesecon.mvps_get_stack(pos, dir, maximum, all_pull_sticky)
return nodes
end
function mesecon.mvps_push(pos, dir, maximum)
return mesecon.mvps_push_or_pull(pos, dir, dir, maximum)
function mesecon.mvps_push(from, pos, dir, maximum)
return mesecon.mvps_push_or_pull(from, false, pos, dir, dir, maximum)
end
function mesecon.mvps_pull_all(pos, dir, maximum)
return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum, true)
function mesecon.mvps_pull_all(from, pos, dir, maximum)
return mesecon.mvps_push_or_pull(from, true, pos, vector.multiply(dir, -1), dir, maximum, true)
end
function mesecon.mvps_pull_single(pos, dir, maximum)
return mesecon.mvps_push_or_pull(pos, vector.multiply(dir, -1), dir, maximum)
function mesecon.mvps_pull_single(from, pos, dir, maximum)
return mesecon.mvps_push_or_pull(from, true, pos, vector.multiply(dir, -1), dir, maximum)
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)
local nodes = mesecon.mvps_get_stack(pos, movedir, maximum, all_pull_sticky)
if not nodes then return end
function mesecon.mvps_push_or_pull(from, ispulling, pos, stackdir, movedir, maximum, all_pull_sticky)
local has_meta = minetest.get_meta(from):to_table()
local owner = minetest.get_meta(from):get_string("owner")
local tnodes = mesecon.mvps_get_stack(pos, movedir, maximum, all_pull_sticky)
if not tnodes then return end
-- determine if one of the nodes blocks the push / pull
for id, n in ipairs(nodes) do
local nodes = {}
for id, n in ipairs(tnodes) do
if not has_meta or minetest.is_protected(n.pos, owner) then
if ispulling then
break
else
return
end
end
if mesecon.is_mvps_stopper(n.node, movedir, nodes, id) then
if ispulling then
break
else
return
end
end
nodes[id] = n
end
-- check nodes
for _, n in ipairs(nodes) do
local np = vector.add(n.pos, movedir)
if not has_meta or minetest.is_protected(np, owner) then
return
end
end