mtcontrib/boost_cart
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Shorter codes, allow left/right-down

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SmallJoker 2014-08-09 18:42:54 +02:00
parent c07c92a1fb
commit 21e309c414
1 changed files with 43 additions and 31 deletions
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74
functions.lua
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@ -19,6 +19,32 @@ function boost_cart:is_rail(pos)
return minetest.get_item_group(node, "rail") ~= 0
end
function boost_cart:check_front_up_down(pos, dir, onlyDown)
local cur = nil
-- Front
dir.y = 0
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
end
-- Up
if not onlyDown then
dir.y = 1
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
end
end
-- Down
dir.y = -1
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
end
return nil
end
function boost_cart:get_rail_direction(pos_, dir_, ctrl, old_switch)
local pos = vector.round(pos_)
local dir = vector.new(dir_)
@ -44,57 +70,43 @@ function boost_cart:get_rail_direction(pos_, dir_, ctrl, old_switch)
right_check = false
end
if ctrl.left and left_check then
cur = vector.add(pos, left)
if boost_cart:is_rail(cur) then
return left, 1
cur = boost_cart:check_front_up_down(pos, left, true)
if cur then
return cur, 1
end
left_check = false
end
if ctrl.right and right_check then
cur = vector.add(pos, right)
if boost_cart:is_rail(cur) then
return right, 2
cur = boost_cart:check_front_up_down(pos, right, true)
if cur then
return cur, 2
end
right_check = true
end
end
-- Front
dir.y = 0
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
end
-- Down
dir.y = -1
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
end
-- Up
dir.y = 1
cur = vector.add(pos, dir)
if boost_cart:is_rail(cur) then
return dir
-- Normal
cur = boost_cart:check_front_up_down(pos, dir)
if cur then
return cur
end
-- Left, if not already checked
if left_check then
cur = vector.add(pos, left)
if boost_cart:is_rail(cur) then
return left
cur = boost_cart:check_front_up_down(pos, left, true)
if cur then
return cur
end
end
-- Right, if not already checked
if right_check then
cur = vector.add(pos, right)
if boost_cart:is_rail(cur) then
return right
cur = boost_cart:check_front_up_down(pos, right, true)
if cur then
return cur
end
end
return {x=0, y=0, z=0}
end