cutil

if not os.loadAPI("button") then
    error("Checkers util API requires the button API by minecraftwarlock to run")
end

mon = peripheral.wrap("left")

button.default()

local xSize,ySize = mon.getSize()

function offset(x,coord)
    if string.lower(coord) == "x" then
        return math.floor(xSize / 2) + x
    elseif string.lower(coord) == "y" then
        return math.floor(ySize / 2) + x
    end
end

local boardX = offset(-3,"x")
local boardY = offset(-3,"y")

menuButtons = {}

pieces = {
white = {
piece1 = {x = 1,y = 1,moves = 0,taken = 0,alive = true},piece2 = {x = 1,y = 3,moves = 0,taken = 0,alive = true},
piece3 = {x = 1,y = 5,moves = 0,taken = 0,alive = true},piece4 = {x = 1,y = 7,moves = 0,taken = 0,alive = true},
piece5 = {x = 2,y = 2,moves = 0,taken = 0,alive = true},piece6 = {x = 2,y = 4,moves = 0,taken = 0,alive = true},
piece7 = {x = 2,y = 6,moves = 0,taken = 0,alive = true},piece8 = {x = 2,y = 8,moves = 0,taken = 0,alive = true},
piece9 = {x = 3,y = 1,moves = 0,taken = 0,alive = true},piece10 = {x = 3,y = 3,moves = 0,taken = 0,alive = true},
piece11 = {x = 3,y = 5,moves = 0,taken = 0,alive = true},piece12 = {x = 3,y = 7,moves = 0,taken = 0,alive = true}
}
}

alive = {
white = {
}
}

function getRealCoords(x,y)
    return boardX + x - 1,boardY + y - 1
end

function cntrdTxt(txt,x,y)
    mon.setBackgroundColor(colors.black)
    mon.setTextColor(colors.white)
    mon.setCursorPos(offset(-1 * (math.floor(string.len(txt) / 2 + x ) - 1),"x"),1 + x)
    mon.write(txt)
end

mods = {}

function drawRow(side,x,y)
    mon.setCursorPos(x,y)
    for i=1,4 do
        if side == 1 then
            mon.setBackgroundColor(colors.red)
            mon.write(" ")
            mon.setBackgroundColor(colors.black)
            mon.write(" ")
        elseif side == 2 then
            mon.setBackgroundColor(colors.black)
            mon.write(" ")
            mon.setBackgroundColor(colors.red)
            mon.write(" ")
        end
    end
end

function board()
    local y = boardY
    for i=1,4 do
        drawRow(1,boardX,y)
        y = y + 1
        drawRow(2,boardX,y)
        y = y + 1
    end
end

function mainMenu()
    cntrdTxt("Checkers",0,0)
    button.define("lcl","Local",offset(-6,"x"),offset(-1,"y"),colors.white,colors.red,true)
    button.define("glbl","Globlal",offset(2,"x"),offset(-1,"y"),colors.lightGray,colors.gray,true)
    button.draw("all")
    button.deactivate("glbl")
    local pressed = button.click()
    button.deactivate("all")
    button.erase("all")
    return pressed
end

function findPlayer()
    local id = rednet.lookup("cg","cg")
    if type(x) == number then
        os.queueEvent("found_player",id)
    end
end
print("Checkers util API (by minecraftwarlock) loaded")

function getMods(path)
    if fs.exists(path) and fs.isDir(path) then
        local rawmods = fs.list(path)
        local mods = {}
        for index,mod in ipairs(rawmods) do
            if not fs.isDir(path.."/"..mod) then
                table.insert(mods,mod)
            end
        end
        return mods
    else
        error("directory: "..path.." not found")
    end
end

function drawWhite()
    for i in pairs(pieces[white]) do
        button.define(i,"X",getRealCoords(white[i][x],white[i][y]),colors.white,colors.red,false)
    end
    button.draw(white)
end