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Fix #276: Fix bugs in block forceloading in turnon / turnoff

Thanks to @Hawk777 for reporting this problem
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Jeija committed Jul 25, 2016
1 parent acd41b5 commit 7c7595fd7dea6bc569086c544c74682552824e41
Showing with 53 additions and 31 deletions.
  1. +53 −31 mesecons/internal.lua
@@ -76,7 +76,7 @@ function mesecon.get_conductor(nodename)
end
end

function mesecon.get_any_outputrules (node)
function mesecon.get_any_outputrules(node)
if not node then return nil end

if mesecon.is_conductor(node.name) then
@@ -86,7 +86,7 @@ function mesecon.get_any_outputrules (node)
end
end

function mesecon.get_any_inputrules (node)
function mesecon.get_any_inputrules(node)
if not node then return nil end

if mesecon.is_conductor(node.name) then
@@ -96,7 +96,7 @@ function mesecon.get_any_inputrules (node)
end
end

function mesecon.get_any_rules (node)
function mesecon.get_any_rules(node)
return mesecon.mergetable(mesecon.get_any_inputrules(node) or {},
mesecon.get_any_outputrules(node) or {})
end
@@ -381,28 +381,39 @@ function mesecon.turnon(pos, link)

-- area not loaded, postpone action
if not node then
mesecon.queue:add_action(f.pos, "turnon", {link}, nil, true)
mesecon.queue:add_action(f.pos, "turnon", {f.link}, nil, true)
elseif mesecon.is_conductor_off(node, f.link) then
local rules = mesecon.conductor_get_rules(node)

minetest.swap_node(f.pos, {name = mesecon.get_conductor_on(node, f.link),
param2 = node.param2})
-- Success: If false, at least one neighboring node is unloaded,
-- postpone turning on action
local success = true
local neighborlinks = {}

-- call turnon on neighbors: normal rules
-- call turnon on neighbors
for _, r in ipairs(mesecon.rule2meta(f.link, rules)) do
local np = vector.add(f.pos, r)

-- area not loaded, postpone action
-- Neighboring node not loaded, postpone turning on current node
-- since we can't even know if neighboring node has matching rules
if not mesecon.get_node_force(np) then
mesecon.queue:add_action(np, "turnon", {rulename},
nil, true)
success = false
break
else
local links = mesecon.rules_link_rule_all(f.pos, r)
for _, l in ipairs(links) do
table.insert(frontiers, {pos = np, link = l})
end
neighborlinks[minetest.hash_node_position(np)] = mesecon.rules_link_rule_all(f.pos, r)
end
end

if success then
minetest.swap_node(f.pos, {name = mesecon.get_conductor_on(node, f.link),
param2 = node.param2})

for npos, l in pairs(neighborlinks) do
table.insert(frontiers, {pos = minetest.get_position_from_hash(npos), link = l})
end
else
mesecon.queue:add_action(f.pos, "turnon", {f.link}, nil, true)
end
elseif mesecon.is_effector(node.name) then
mesecon.changesignal(f.pos, node, f.link, mesecon.state.on, depth)
if mesecon.is_effector_off(node.name) then
@@ -413,7 +424,7 @@ function mesecon.turnon(pos, link)
end
end

mesecon.queue:add_function("turnon", function (pos, rulename, recdepth)
mesecon.queue:add_function("turnon", function(pos, rulename, recdepth)
mesecon.turnon(pos, rulename, recdepth)
end)

@@ -427,27 +438,38 @@ function mesecon.turnoff(pos, link)

-- area not loaded, postpone action
if not node then
mesecon.queue:add_action(f.pos, "turnoff", {link}, nil, true)
mesecon.queue:add_action(f.pos, "turnoff", {f.link}, nil, true)
elseif mesecon.is_conductor_on(node, f.link) then
local rules = mesecon.conductor_get_rules(node)

minetest.swap_node(f.pos, {name = mesecon.get_conductor_off(node, f.link),
param2 = node.param2})
-- Success: If false, at least one neighboring node is unloaded,
-- postpone turning on action
local success = true
local neighborlinks = {}

-- call turnoff on neighbors: normal rules
-- call turnoff on neighbors
for _, r in ipairs(mesecon.rule2meta(f.link, rules)) do
local np = vector.add(f.pos, r)

-- area not loaded, postpone action
-- Neighboring node not loaded, postpone turning off current node
-- since we can't even know if neighboring node has matching rules
if not mesecon.get_node_force(np) then
mesecon.queue:add_action(np, "turnoff", {rulename},
nil, true)
success = false
break
else
local links = mesecon.rules_link_rule_all(f.pos, r)
for _, l in ipairs(links) do
table.insert(frontiers, {pos = np, link = l})
end
neighborlinks[minetest.hash_node_position(np)] = mesecon.rules_link_rule_all(f.pos, r)
end
end

if success then
minetest.swap_node(f.pos, {name = mesecon.get_conductor_off(node, f.link),
param2 = node.param2})

for npos, l in pairs(neighborlinks) do
table.insert(frontiers, {pos = minetest.get_position_from_hash(npos), link = l})
end
else
mesecon.queue:add_action(f.pos, "turnoff", {f.link}, nil, true)
end
elseif mesecon.is_effector(node.name) then
mesecon.changesignal(f.pos, node, f.link, mesecon.state.off, depth)
@@ -459,7 +481,7 @@ function mesecon.turnoff(pos, link)
end
end

mesecon.queue:add_function("turnoff", function (pos, rulename, recdepth)
mesecon.queue:add_function("turnoff", function(pos, rulename, recdepth)
mesecon.turnoff(pos, rulename, recdepth)
end)

@@ -523,8 +545,8 @@ function mesecon.rules_link(output, input, dug_outputrules) --output/input are p
local outputnode = mesecon.get_node_force(output)
local inputnode = mesecon.get_node_force(input)

local outputrules = dug_outputrules or mesecon.get_any_outputrules (outputnode)
local inputrules = mesecon.get_any_inputrules (inputnode)
local outputrules = dug_outputrules or mesecon.get_any_outputrules(outputnode)
local inputrules = mesecon.get_any_inputrules(inputnode)
if not outputrules or not inputrules then
return
end
@@ -547,7 +569,7 @@ end
function mesecon.rules_link_rule_all(output, rule)
local input = vector.add(output, rule)
local inputnode = mesecon.get_node_force(input)
local inputrules = mesecon.get_any_inputrules (inputnode)
local inputrules = mesecon.get_any_inputrules(inputnode)
if not inputrules then
return {}
end
@@ -567,7 +589,7 @@ function mesecon.rules_link_rule_all_inverted(input, rule)
--local irule = mesecon.invertRule(rule)
local output = vector.add(input, rule)
local outputnode = mesecon.get_node_force(output)
local outputrules = mesecon.get_any_outputrules (outputnode)
local outputrules = mesecon.get_any_outputrules(outputnode)
if not outputrules then
return {}
end

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