Potion Shop

os.loadAPI("btn")
modemSide = "top"
useSplash = false
brewerID = 82
rednet.open(modemSide)

--function that draws all the buff potions
local function buffs()
    btn.deActivateAllDraw()
    btn.activateDraw("strength")
    btn.activateDraw("speed")
    btn.activateDraw("fireResist")
    btn.activateDraw("healing")
    btn.activateDraw("nightVision")
    btn.activateDraw("invisible")
    btn.activateDraw("regen")
    btn.activateDraw("back")
    btn.changeText("back","Back")
    btn.changePos("back",1,7,17,19)
    term.clear()
    btn.createScreen("Buff Potions", colors.white)
    backTo = "main"
end

-- function that activates all offensive potions
local function offensive()
    btn.deActivateAllDraw()
    btn.activateDraw("slowness")
    btn.activateDraw("poison")
    btn.activateDraw("harming")
    btn.activateDraw("weakness")
    btn.activateDraw("back")
    btn.changeText("back","Back")
    btn.changePos("back",1,7,17,19)
    term.clear()
    btn.createScreen("Offensive Potions", colors.white)
    backTo = "main"
end

--function that draws the main menu
local function mainMenu()
    btn.deActivateAllDraw()
    btn.activateDraw("buffs")
    btn.activateDraw("offensive")
    term.clear()
    btn.createScreen("Select a Category",colors.white)
end

--function called when the back button is pressed
local function back()
    if backTo == "main" then
        mainMenu()
    elseif backTo == "offensive" then
        offensive()
        btn.deActivate("splash")
        useSplash = false
        btn.changePos("iDur",12,40,8,12)
        btn.changePos("norm",12,40,14,18)
        btn.changePos("iPotency",12,40,2,6)
        btn.changeText("back","Back")
        btn.changePos("back",1,7,17,19)
    elseif backTo == "buffs" then
        buffs()
        btn.deActivate("splash")
        useSplash = false
        btn.changePos("iDur",12,40,8,12)
        btn.changePos("norm",12,40,14,18)
        btn.changePos("iPotency",12,40,2,6)
    end
    btn.changeText("back","Back")
end

--function called when splash button is pressed
local function splash()
    useSplash = not useSplash
    btn.toggle("splash")
end

--function called when a potion button is pressed
local function potion(name)
    btn.deActivateAllDraw()
    color = btn.getColor(name)
    potionName = btn.getText(name)
    btn.changeColor("iPotency",color)
    btn.changeColor("iDur",color)
    btn.changeColor("norm",color)
    if name == "speed" or name == "poison" or name == "strength" or name == "regen" then
        btn.activateDraw("iPotency")
    else
        btn.changePos("iDur",12,40,3,7)
        btn.changePos("norm",12,40,11,15)
    end
    btn.activateDraw("iDur")
    btn.activateDraw("norm")
    btn.activateDraw("splash")
    btn.activateDraw("back")

    term.clear()
    btn.createScreen("Select Variation of potion",colors.white)
    if name == "slowness" or name == "poison" or name == "harming" or name == "weakness" then
        backTo = "offensive"
    else
        backTo = "buffs"
    end
end

local function orderScreen(name)
    btn.deActivateAllDraw()
    term.clear()
    btn.changeText("back"," Cancel")
    btn.changePos("back",1,8,17,19)
    btn.activateDraw("back")
    btn.activateDraw("order")
    if potionName ~= "Fire Resist" and potionName ~= "Healing" then
        if potionName == "  Speed" then
            begin = 3
        else
            begin = 2
        end
        nameLength = string.len(potionName)
        potionName = string.sub(potionName,begin,nameLength)
    end
    btn.createScreen("Order Screen",colors.white)
    btn.centerText(5,"Your order:",colors.white)
    btn.centerText(6,"1 Potion of: "..potionName,colors.white)
    if name == "iPotency" then
        iPotency = true
        btn.centerText(7,"With Increased Potency",colors.white)
    elseif name == "iDur" then
        iDur = true
        btn.centerText(7,"With Increased Duration",colors.white)
    end
    if useSplash == true then
        btn.centerText(8,"Splash Potion",colors.white)
    end
end

local function progressScreen()
    term.clear()
    time = 7
    btn.centerText(6,"Brewing...",colors.white)
    btn.centerText(7,"Estimated time: "..time, colors.white)
end

local function order(potion, useSplash)
    progressScreen()
    rednet.send(brewerID, potion.." "..useSplash)
end

--category buttons
btn.fillTable("buffs",12,40,3,7,"Buff Potions",buffs,colors.red,false)
btn.fillTable("offensive",12,40,11,15,"Offensive Potions",offensive,colors.green,false)

--buff potions
btn.fillTable("strength",8,17,2,6," Strength",potion,colors.purple,false)
btn.fillTable("speed",34,44,2,6,"  Speed",potion,colors.lightBlue,false)
btn.fillTable("fireResist",19,32,2,6,"Fire Resist",potion,colors.orange,false)
btn.fillTable("healing",8,17,8,12,"Healing",potion,colors.red,false)
btn.fillTable("nightVision",19,32,8,12," Night Vision",potion,colors.blue,false)
btn.fillTable("invisible",19,32,14,18," Invisibility",potion,colors.lightGray,false)
btn.fillTable("regen",34,44,8,12," Regen",potion,colors.magenta,false)

--offensive potions
btn.fillTable("slowness",19,32,3,7," Slowness",potion,colors.lightGray,false)
btn.fillTable("poison",8,17,3,7," Poison",potion,colors.green,false)
btn.fillTable("harming",34,44,3,7," Harming",potion,colors.purple,false)
btn.fillTable("weakness",19,32,9,13," Weakness",potion,colors.gray,false)

--variation buttons
btn.fillTable("iPotency", 12,40,2,6,"Increased Potency",orderScreen,color,false)
btn.fillTable("iDur", 12,40,8,12,"Increased Duration",orderScreen,color,false)
btn.fillTable("norm",12,40,14,18,"Normal Potion",orderScreen,color,false)
btn.fillTable("splash",1,8,1,3,"Splash",splash,nil,false)

--misc buttons
btn.fillTable("back",1,7,17,19," Back",back,colors.red,false)
btn.fillTable("order",44,51,17,19," Order",order,colors.red,false)

mainMenu()
while true do
    event, button, x, y = os.pullEvent("mouse_click")
    btn.checkClick(x,y)
end