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Allow switching with keys

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SmallJoker
2014-08-09 17:37:02 +02:00
parent 70f07f4158
commit 59b1512cc3
13 changed files with 69 additions and 58 deletions
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99
functions.lua
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@ -19,10 +19,45 @@ function boost_cart:is_rail(pos)
return minetest.get_item_group(node, "rail") ~= 0
end
function boost_cart:get_rail_direction(pos_, dir_)
function boost_cart:get_rail_direction(pos_, dir_, ctrl, old_switch)
local pos = vector.round(pos_)
local dir = vector.new(dir_)
local cur = nil
local left_check, right_check = true, true
old_switch = old_switch or 0
-- Check left and right
local left = {x=0, y=0, z=0}
local right = {x=0, y=0, z=0}
if dir.z ~= 0 and dir.x == 0 then
left.x = -dir.z
right.x = dir.z
elseif dir.x ~= 0 and dir.z == 0 then
left.z = dir.x
right.z = -dir.x
end
if ctrl then
if old_switch == 1 then
left_check = false
elseif old_switch == 2 then
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
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
end
right_check = true
end
end
-- Front
dir.y = 0
@ -45,58 +80,20 @@ function boost_cart:get_rail_direction(pos_, dir_)
return dir
end
-- Left, right
dir.y = 0
-- Check left and right
local view, opposite, val
if dir.x == 0 and dir.z ~= 0 then
view = "z"
other = "x"
if dir.z < 0 then
val = {1, -1}
else
val = {-1, 1}
-- Left, if not already checked
if left_check then
cur = vector.add(pos, left)
if boost_cart:is_rail(cur) then
return left
end
elseif dir.z == 0 and dir.x ~= 0 then
view = "x"
other = "z"
if dir.x > 0 then
val = {1, -1}
else
val = {-1, 1}
end
-- Right, if not already checked
if right_check then
cur = vector.add(pos, right)
if boost_cart:is_rail(cur) then
return right
end
else
return {x=0, y=0, z=0}
end
dir[view] = 0
dir[other] = val[1]
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
dir.y = 0
dir[other] = val[2]
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
return {x=0, y=0, z=0}