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local function ensure_equipped(ptype, item)
local cur = peripheral.getType"left"
print(cur)
if cur == ptype then return true end
for i = 1,16 do
local det = turtle.getItemDetail(i)
if det and det.name == item then
turtle.select(i)
return turtle.equipLeft()
end
end
return false, "couldn't find "..item
end
local function ensure_modem() return ensure_equipped("modem","computercraft:wireless_modem_normal") end
local function ensure_scanner() return error("aaa") end
assert(ensure_modem())
local POS = vector.new(gps.locate())
local function get_facing()
while turtle.detect() do turtle.turnRight() end
turtle.forward()
local newpos = vector.new(gps.locate())
turtle.back()
return newpos - POS
end
local FACING = get_facing()
local function moveby_y(delta)
local fn = turtle.up
if delta < 0 then fn = turtle.down delta = -delta end
for i=1,delta do fn() end
end
local function rotatev(v,nq)
-- rotates v by n quarters
nq = nq%4
if nq == 0 then return vector.new( v.x, v.y, v.z)
elseif nq == 1 then return vector.new(-v.z, v.y, v.x)
elseif nq == 2 then return vector.new(-v.x, v.y, -v.z)
elseif nq == 3 then return vector.new( v.z, v.y, -v.x)
end
end
local v = vector.new(1,0,0)
for i=1,4 do print(i,rotatev(v,i)) end
local function moveby_xz(dv)
-- y component of dv is ignored
end
local datum = vector.new(-18, 128, -1837)
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