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Repeaters: Do not unlock if locked from other side

This commit is contained in:
Wuzzy 2018-01-27 15:00:58 +01:00
parent 719e5193d8
commit 781caa1187
1 changed files with 34 additions and 14 deletions
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48
mods/ITEMS/REDSTONE/mesecons_delayer/init.lua
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@ -28,9 +28,11 @@ local delayer_get_sides = function(node)
return rules
end
-- Make the repeater at pos try to lock any repeater it faces.
-- Returns true if a repeater was locked.
local check_lock_repeater = function(pos, node)
-- Check the repeater at pos and look if there is
-- a repeater in its facing direction and sideways.
-- Check the repeater at pos and look if it faces
-- a repeater placed sideways.
-- If yes, lock the second repeater.
local r = delayer_get_output_rules(node)[1]
local lpos = vector.add(pos, r)
@ -54,32 +56,50 @@ local check_lock_repeater = function(pos, node)
return false
end
-- Make the repeater at pos try to unlock any repeater it faces.
-- Returns true if a repeater was unlocked.
local check_unlock_repeater = function(pos, node)
-- Unlock repeater
-- Check the repeater at pos and look if it faces
-- a repeater placed sideways.
-- If yes, also check if the second repeater doesn't receive
-- a locking signal on the other side. If not, unlock the second repeater.
local r = delayer_get_output_rules(node)[1]
local lpos = vector.add(pos, r)
local lnode = minetest.get_node(lpos)
local ldef = minetest.registered_nodes[lnode.name]
local g = minetest.get_item_group(lnode.name, "redstone_repeater")
-- Are we facing a locked repeater?
if g == 5 then
-- First check the orientation of the faced repeater
local lrs = delayer_get_input_rules(lnode)
local fail = false
for _, lr in pairs(lrs) do
if lr.x == r.x or lr.z == r.z then
fail = true
break
-- Invalid orientation. Do nothing
return false
end
end
if not fail then
if mesecon.is_powered(lpos, delayer_get_input_rules(lnode)[1]) then
minetest.swap_node(lpos, {name="mesecons_delayer:delayer_on_1", param2=lnode.param2})
mesecon.queue:add_action(lpos, "receptor_on", {delayer_get_output_rules(lnode)}, ldef.delayer_time, nil)
else
minetest.swap_node(lpos, {name="mesecons_delayer:delayer_off_1", param2=lnode.param2})
mesecon.queue:add_action(lpos, "receptor_off", {delayer_get_output_rules(lnode)}, ldef.delayer_time, nil)
-- Now we check if there's a powered repeater on the other side of the
-- locked repeater.
-- To get to the other side, we just take another step in the direction which we already face.
local other_side = vector.add(lpos, r)
local other_node = minetest.get_node(other_side)
if minetest.get_item_group(other_node.name, "redstone_repeater") ~= 0 and mesecon.is_receptor_on(other_node.name) then
-- Final check: The other repeater must also face the right way
local other_face = delayer_get_output_rules(other_node)[1]
local other_facing_pos = vector.add(other_side, other_face)
if vector.equals(other_facing_pos, lpos) then
-- Powered repeater found AND it's facing the locked repeater. Do NOT unlock!
return false
end
return true
end
if mesecon.is_powered(lpos, delayer_get_input_rules(lnode)[1]) then
minetest.swap_node(lpos, {name="mesecons_delayer:delayer_on_1", param2=lnode.param2})
mesecon.queue:add_action(lpos, "receptor_on", {delayer_get_output_rules(lnode)}, ldef.delayer_time, nil)
else
minetest.swap_node(lpos, {name="mesecons_delayer:delayer_off_1", param2=lnode.param2})
mesecon.queue:add_action(lpos, "receptor_off", {delayer_get_output_rules(lnode)}, ldef.delayer_time, nil)
end
return true
end
return false
end