CCGames: giveItem

-- Peripherals
s = peripheral.wrap("front") --Wrapping Sensor

-- Relative Coordinates (integer coord when closest to sensor but still on block)
relX = 0 -- relative x coord to sensor
relY = 2 -- relative y coord to sensor
relZ = -1 -- relative z coord to sensor

-- Helper Functions
function rnd(num) -- floors a positive number, ceils a negative number
    if num >= 0 then
        return math.floor(num)
    else
        return math.ceil(num)
    end
end

function isCorrectPos(pos,x,y,z) -- Compares position vectors to see if same
    if rnd(pos.x) == x and rnd(pos.y) == y and rnd(pos.z) == z then
        return true
    else
        return false
    end
end

function inInv(inv,id) -- checks if an item is in the inventory
    local there = false -- true if item is in inventory
    for i = 1, table.getn(inv) do
        if inv[i].id == id then
            there = true
        end
    end
    return there
end

while true do
    n=table.getn(s.getPlayerNames()) -- amount of nearby players
    if n > 0 then
        for i = 1, n do
            local p=s.getPlayerNames()[i] -- player name
            local pos=s.getPlayerData(p).position -- coordinate vector of player
            local inv=s.getPlayerData(p).inventory -- inventory data of player
            if isCorrectPos(pos,relX,relY,relZ) and not(inInv(inv,1311) or inInv(inv,1312)) then
                rs.setOutput("left",true) -- Command Block give Remote
                rs.setOutput("back",true) -- Command Block give Terminal Glasses
            else
                rs.setOutput("left",false)
                rs.setOutput("back",false)
            end
        end
    end
  sleep(0) -- allow time for program to yield
end