109 lines
No EOL
1.7 KiB
Lua
109 lines
No EOL
1.7 KiB
Lua
pp = require("cc.pretty").pretty_print
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_G.facing = _G.facing or "south"
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_G.pos = _G.pos or vector.new(0,0,0)
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local up = vector.new(0,1,0)
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local rightOf = {
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south = "west",
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west = "north",
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north = "east",
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east = "south"
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}
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local leftOf = {
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west = "south",
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north = "west",
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east = "north",
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south = "east"
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}
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local vecOf = {
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north = vector.new(0,0,-1),
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south = vector.new(0,0,1),
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east = vector.new(1,0,0),
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west = vector.new(-1,0,0),
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}
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function goUp()
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if turtle.up() then
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_G.pos.y = _G.pos.y + 1
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else
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printError("failed to go up")
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printError(pos)
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end
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end
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function goDown()
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if turtle.down() then
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_G.pos.y = _G.pos.y - 1
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else
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printError("failed to go down")
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printError(pos)
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end
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end
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function goLeft()
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turtle.turnLeft()
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_G.facing = leftOf[_G.facing]
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end
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function goRight()
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turtle.turnRight()
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_G.facing = rightOf[_G.facing]
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end
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function goForward()
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if turtle.forward() then
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_G.pos = _G.pos + vecOf[_G.facing]
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else
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printError("failed to go forward")
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printError(pos)
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end
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end
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function goBack()
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if turtle.back() then
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_G.pos = _G.pos - vecOf[_G.facing]
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else
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printError("failed to go backward")
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printError(pos)
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end
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end
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function stepTo(target)
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local delta = target - _G.pos
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-- print(delta)
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if delta.y > 0 then
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goUp()
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elseif delta.y < 0 then
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goDown()
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elseif delta:dot(vecOf[_G.facing]) > 0 then
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goForward()
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elseif delta:dot(vecOf[_G.facing]:cross(up)) > 0 then
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goRight()
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else
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goLeft()
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end
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end
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function goTo(target, face)
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while target ~= _G.pos do
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stepTo(target)
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end
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if face and face ~= _G.facing then
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if rightOf[_G.facing] == face then
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goRight()
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elseif leftOf[_G.facing] == face then
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goLeft()
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else
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goRight()
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goRight()
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end
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end
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end
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function goHome()
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goTo(vector.new(0,0,0), "south")
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end |