flagpole_exit

--======================
-- FLagpole Exit API
--======================

local flagpole_exit = {}

-- Constants
local POLE_POSITION = {} --top of flagpole
local POLE_SECTION = -1
local FLAG_SONG = ""
local SLIDE_LENGTH = -1
local FANFARE_LENGTH = -1
local EXIT_SPEED = -1.0

-- Flags
local normal = false
local slide = false
local ending = false
local warpOut = false

-- Main Function
function run()
    if normal and
    (player.x >= POLE_POSITION[1] - 32) and
    (player.y >= POLE_POSITION[2]) and
    (player.section == POLE_SECTION - 1) then
        normal = false
        slide = true

        Misc.npcToCoins() --end level enemy kill

        player.speedX = 0 --halt player
        player.speedY = 0

        Audio.SeizeStream(POLE_SECTION - 1)
        Audio.MusicOpen(FLAG_SONG)
        Audio.MusicPlay()
    end

    -- Hold slide state until fanfare, then open pole and start ending
    if slide then
        player.speedY = 4
        SLIDE_LENGTH = SLIDE_LENGTH - 1
    end
    if slide and SLIDE_LENGTH == 0 then
        slide = false
        ending = true

        local yFlag = Layer.get("Flag")
        local nFlag = Layer.get("NoFlag")
        yFlag:toggle(true)
        nFlag:toggle(true)
    end

    -- Walk right until fanfare complete, then wait for warp
    if ending then
        player.speedX = EXIT_SPEED
        FANFARE_LENGTH = FANFARE_LENGTH - 1
    end
    if ending and FANFARE_LENGTH == 0 then
        ending = false
        warpOut = true
        Audio.MusicStop()
    end
end

-- Control Locks
function slideLock()
    player.upKeyPressing = false
    player.downKeyPressing = true
    player.leftKeyPressing = false
    player.rightKeyPressing = true
    player.jumpKeyPressing = false
    player.altJumpKeyPressing = false
    player.runKeyPressing = false
    player.altRunKeyPressing = false
    player.pauseKeyPressing = false
end

function endingLock()
    player.upKeyPressing = false
    player.downKeyPressing = false
    player.leftKeyPressing = false
    player.rightKeyPressing = true
    player.jumpKeyPressing = false
    player.altJumpKeyPressing = false
    player.runKeyPressing = false
    player.altRunKeyPressing = false
    player.pauseKeyPressing = false
end

function locks()
    if slide then slideLock()
    elseif ending then endingLock()
    elseif warpOut then player.upKeyPressing = true --warp through exit door
    end
end

--register functions
function flagpole_exit.onInitAPI()
    registerEvent(flagpole_exit, "onLoop", "run")
    registerEvent(flagpole_exit, "onInputUpdate", "locks")
end

--constructor
function flagpole_exit.init(polePosition,poleSection,flagSong,slideLength,fanfareLength,exitSpeed)
    POLE_POSITION = polePosition
    POLE_SECTION = poleSection or 1
    FLAG_SONG = flagSong
    SLIDE_LENGTH = slideLength or 90
    FANFARE_LENGTH = fanfareLength or 420
    EXIT_SPEED = exitSpeed or 0.32
    normal = true
end

return flagpole_exit