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item_transport.lua: read cycle direction at start of go_next() in preparation for refactoring

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thetaepsilon-gamedev 2017-12-19 22:53:18 +00:00
parent 97522b6a24
commit fb91ba53f1
1 changed files with 8 additions and 1 deletions
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9
item_transport.lua
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@ -100,6 +100,11 @@ local function go_next(pos, velocity, stack, owner)
vel.speed = speed vel.speed = speed
crunch_tube(pos, cnode, cmeta) crunch_tube(pos, cnode, cmeta)
-- cycling of outputs:
-- an integer counter is kept in each pipe's metadata,
-- which allows tracking which output was previously chosen.
-- note reliance on get_int returning 0 for uninitialised.
local cycledir = cmeta:get_int("tubedir")
if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then if minetest.registered_nodes[cnode.name] and minetest.registered_nodes[cnode.name].tube and minetest.registered_nodes[cnode.name].tube.can_go then
can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack) can_go = minetest.registered_nodes[cnode.name].tube.can_go(pos, cnode, vel, stack)
@ -132,7 +137,9 @@ local function go_next(pos, velocity, stack, owner)
return false, nil, nil return false, nil, nil
end end
local n = (cmeta:get_int("tubedir") % (#next_positions)) + 1 local n = (cycledir % (#next_positions)) + 1
-- if not using output cycling,
-- don't update the field so it stays the same for the next item.
if pipeworks.enable_cyclic_mode then if pipeworks.enable_cyclic_mode then
cmeta:set_int("tubedir", n) cmeta:set_int("tubedir", n)
end end