What's the best way tell a drone to pause in a sequence of movements?

[PHOBOSS98 0]

Im trying to get my drone to pause for a moment after it moves but it seems the drone reads the code too fast and instead just jutters like as if it was nodding... what's the shortest piece of code (thats compatible for both mac and windows) can you put in the sequence to tell it to pause for a second or two? here's my code:

1. local r=component.proxy(component.list("radar")())
2. local m=component.proxy(component.list("modem")())
3. local d=component.proxy(component.list("drone")())
4. d.setLightColor(0x00FFD8)
5. m.open(001)
6. while true do
7.     local evt_,_,_,_,name,cmd,x,y,z = computer.pullSignal()
8.         if evt=="modem_message" then
9.             if cmd=="test z" then
10.             d.move(0,3,0)
11.             d.move(0,-3,0)
12.             end
13.             if cmd=="test x" then
14.             d.move(3,0,0)
15.             d.move(-3,0,0)
16.             end
17.             if cmd=="shh" then
18.             break
19.             end
20.         end
21. end

[Molinko 43]

What you want is code that will "block" further execution until some condition is met. Because drone.move is non-blocking(pain in the ass if you ask me :p) we have to write  a function to wait until the drone is finished moving.

function waitUntil(freq, predicate)
  -- # wait 'freq' amount of time until 'predicate' returns true
  repeat computer.pullSignal(freq) until predicate()
end

Can then apply it to your code like so..

local r=component.proxy(component.list("radar")())
local m=component.proxy(component.list("modem")())
local d=component.proxy(component.list("drone")())
d.setLightColor(0x00FFD8)
m.open(001)

function waitUntil(freq, predicate)
  -- # wait 'freq' amount of time until 'predicate' returns true
  repeat computer.pullSignal(freq) until predicate()
end

while true do
    local evt_,_,_,_,name,cmd,x,y,z = computer.pullSignal()
        if evt=="modem_message" then
            if cmd=="test z" then
            d.move(0,3,0)
            waitUntil(0.5, function() return d.getVelocity() == 0 end)
            d.move(0,-3,0)
            end
            if cmd=="test x" then
            d.move(3,0,0)
            waitUntil(0.5, function() return d.getVelocity() == 0 end)
            d.move(-3,0,0)
            end
            if cmd=="shh" then
            break
            end
        end
end

 

[PHOBOSS98 0]

thanks