main.lua

require("src.engine.vars")
require("src.engine.statevars")

utf8 = require("utf8")

_Class = require("src.lib.hump.class")
Gamestate = require("src.lib.hump.gamestate")
Vector = require("src.lib.hump.vector-light")
LibTimer = require("src.lib.hump.timer")
JSON = require("src.lib.json")
Ease = require("src.lib.easing")
SemVer = require("src.lib.semver")
require("src.lib.stable_sort")

Class = require("src.utils.class")
require ("src.utils.graphics")

Utils = require("src.utils.utils")
CollisionUtil = require("src.utils.collision")
Draw = require("src.utils.draw")

Kristal = require("src.kristal")
-- Ease of access for game variables
Game = Kristal.States["Game"]

Assets = require("src.engine.assets")
Music = require("src.engine.music")
Input = require("src.engine.input")
TextInput = require("src.engine.textinput")
Registry = require("src.engine.registry")
Camera = require("src.engine.camera")

Object = require("src.engine.object")
Stage = require("src.engine.objects.stage")
Sprite = require("src.engine.objects.sprite")
Text = require("src.engine.objects.text")
DialogueText = require("src.engine.objects.dialoguetext")
Explosion = require("src.engine.objects.explosion")
AfterImage = require("src.engine.objects.afterimage")
FakeClone = require("src.engine.objects.fakeclone")
Rectangle = require("src.engine.objects.rectangle")
Ellipse = require("src.engine.objects.ellipse")
Fader = require("src.engine.objects.fader")
HPText = require("src.engine.objects.hptext")
Timer = require("src.engine.objects.timer")
StateManager = require("src.engine.objects.statemanager")
Anchor = require("src.engine.objects.anchor")
Callback = require("src.engine.objects.callback")
Video = require("src.engine.objects.video")
GonerChoice = require("src.engine.objects.gonerchoice")
GonerKeyboard = require("src.engine.objects.gonerkeyboard")

ModList = require("src.engine.menu.modlist")
ModButton = require("src.engine.menu.modbutton")
ModCreateButton = require("src.engine.menu.modcreatebutton")
FileList = require("src.engine.menu.filelist")
FileButton = require("src.engine.menu.filebutton")
FileNamer = require("src.engine.menu.filenamer")

DarkTransitionLine = require("src.engine.game.darktransition.darktransitionline")
DarkTransitionParticle = require("src.engine.game.darktransition.darktransitionparticle")
DarkTransitionSparkle = require("src.engine.game.darktransition.darktransitionsparkle")
HeadObject = require("src.engine.game.darktransition.head_object")

FXBase = require("src.engine.drawfx.fxbase")
ShaderFX = require("src.engine.drawfx.shaderfx")
ColorMaskFX = require("src.engine.drawfx.colormaskfx")
AlphaFX = require("src.engine.drawfx.alphafx")
RecolorFX = require("src.engine.drawfx.recolorfx")
MaskFX = require("src.engine.drawfx.maskfx")
OutlineFX = require("src.engine.drawfx.outlinefx")
BattleOutlineFX = require("src.engine.drawfx.battleoutlinefx")
ShadowFX = require("src.engine.drawfx.shadowfx")
FountainShadowFX = require("src.engine.drawfx.fountainshadowfx")
GradientFX = require("src.engine.drawfx.gradientfx")
ScissorFX = require("src.engine.drawfx.scissorfx")

Collider = require("src.engine.colliders.collider")
ColliderGroup = require("src.engine.colliders.collidergroup")
Hitbox = require("src.engine.colliders.hitbox")
LineCollider = require("src.engine.colliders.linecollider")
CircleCollider = require("src.engine.colliders.circlecollider")
PointCollider = require("src.engine.colliders.pointcollider")
PolygonCollider = require("src.engine.colliders.polygoncollider")

PartyMember = require("src.engine.game.common.data.partymember")
Actor = require("src.engine.game.common.data.actor")
Spell = require("src.engine.game.common.data.spell")
Item = require("src.engine.game.common.data.item")
HealItem = require("src.engine.game.common.data.healitem")
TensionItem = require("src.engine.game.common.data.tensionitem")
LightEquipItem = require("src.engine.game.common.data.lightequipitem")

ActorSprite = require("src.engine.game.common.actorsprite")
Inventory = require("src.engine.game.common.inventory")
DarkInventory = require("src.engine.game.common.darkinventory")
LightInventory = require("src.engine.game.common.lightinventory")

Cutscene = require("src.engine.game.common.cutscene")
WorldCutscene = require("src.engine.game.world.worldcutscene")
BattleCutscene = require("src.engine.game.battle.battlecutscene")

Console = require("src.engine.game.console")
DebugSystem = require("src.engine.game.debugsystem")
ContextMenu = require("src.engine.game.contextmenu")
DebugWindow = require("src.engine.game.debugwindow")

UIBox = require("src.engine.game.common.uibox")
Textbox = require("src.engine.game.common.textbox")
Choicebox = require("src.engine.game.common.choicebox")
SmallFaceText = require("src.engine.game.common.smallfacetext")

World = require("src.engine.game.world")
Map = require("src.engine.game.world.map")
Tileset = require("src.engine.game.world.tileset")
TileLayer = require("src.engine.game.world.tilelayer")
Character = require("src.engine.game.world.character")
Follower = require("src.engine.game.world.follower")
Player = require("src.engine.game.world.player")
OverworldSoul = require("src.engine.game.world.overworldsoul")
WorldBullet = require("src.engine.game.world.worldbullet")
ChaserEnemy = require("src.engine.game.world.chaserenemy")

SaveMenu = require("src.engine.game.world.ui.savemenu")
SimpleSaveMenu = require("src.engine.game.world.ui.simplesavemenu")
HealthBar = require("src.engine.game.world.ui.healthbar")
OverworldActionBox = require("src.engine.game.world.ui.overworldactionbox")
Shopbox = require("src.engine.game.world.ui.shopbox")

DarkMenu = require("src.engine.game.world.ui.dark.darkmenu")
DarkItemMenu = require("src.engine.game.world.ui.dark.darkitemmenu")
DarkEquipMenu = require("src.engine.game.world.ui.dark.darkequipmenu")
DarkPowerMenu = require("src.engine.game.world.ui.dark.darkpowermenu")
DarkConfigMenu = require("src.engine.game.world.ui.dark.darkconfigmenu")
DarkMenuPartySelect = require("src.engine.game.world.ui.dark.darkmenupartyselect")
DarkStorageMenu = require("src.engine.game.world.ui.dark.darkstoragemenu")

LightMenu = require("src.engine.game.world.ui.light.lightmenu")
LightItemMenu = require("src.engine.game.world.ui.light.lightitemmenu")
LightStatMenu = require("src.engine.game.world.ui.light.lightstatmenu")
LightCellMenu = require("src.engine.game.world.ui.light.lightcellmenu")

Event = require("src.engine.game.world.event")
Script = require("src.engine.game.world.events.script")
Interactable = require("src.engine.game.world.events.interactable")
Savepoint = require("src.engine.game.world.events.savepoint")
TreasureChest = require("src.engine.game.world.events.treasurechest")
Transition = require("src.engine.game.world.events.transition")
NPC = require("src.engine.game.world.events.npc")
Outline = require("src.engine.game.world.events.outline")
SlideArea = require("src.engine.game.world.events.slidearea")
Silhouette = require("src.engine.game.world.events.silhouette")
CameraTarget = require("src.engine.game.world.events.cameratarget")
HideParty = require("src.engine.game.world.events.hideparty")
SetFlagEvent = require("src.engine.game.world.events.setflagevent")
CyberTrashCan = require("src.engine.game.world.events.cybertrashcan")
Forcefield = require("src.engine.game.world.events.forcefield")
PushBlock = require("src.engine.game.world.events.pushblock")
TileButton = require("src.engine.game.world.events.tilebutton")
MagicGlass = require("src.engine.game.world.events.magicglass")
TileObject = require("src.engine.game.world.events.tileobject")
FrozenEnemy = require("src.engine.game.world.frozenenemy")
WarpDoor = require("src.engine.game.world.events.warpdoor")
DarkFountain = require("src.engine.game.world.events.darkfountain")
FountainFloor = require("src.engine.game.world.events.fountainfloor")
QuicksaveEvent = require("src.engine.game.world.events.quicksave")
MirrorArea = require("src.engine.game.world.events.mirror")

ToggleController = require("src.engine.game.world.events.controllers.togglecontroller")
FountainShadowController = require("src.engine.game.world.events.controllers.fountainshadowcontroller")

Battle = require("src.engine.game.battle")
Encounter = require("src.engine.game.battle.encounter")
Wave = require("src.engine.game.battle.wave")
Battler = require("src.engine.game.battle.battler")
PartyBattler = require("src.engine.game.battle.partybattler")
EnemyBattler = require("src.engine.game.battle.enemybattler")
Arena = require("src.engine.game.battle.arena")
Soul = require("src.engine.game.battle.soul")
Bullet = require("src.engine.game.battle.bullet")
Solid = require("src.engine.game.battle.solid")
GrazeSprite = require("src.engine.game.battle.grazesprite")
ArenaSprite = require("src.engine.game.battle.arenasprite")
ArenaMask = require("src.engine.game.battle.arenamask")
SnowGraveSpell = require("src.engine.game.battle.snowgravespell")

BattleUI = require("src.engine.game.battle.ui.battleui")
ActionBox = require("src.engine.game.battle.ui.actionbox")
ActionBoxDisplay = require("src.engine.game.battle.ui.actionboxdisplay")
ActionButton = require("src.engine.game.battle.ui.actionbutton")
AttackBox = require("src.engine.game.battle.ui.attackbox")
AttackBar = require("src.engine.game.battle.ui.attackbar")
TensionBar = require("src.engine.game.battle.ui.tensionbar")
SpeechBubble = require("src.engine.game.battle.ui.speechbubble")

FlashFade = require("src.engine.game.effects.flashfade")
DamageNumber = require("src.engine.game.effects.damagenumber")
RecruitMessage = require("src.engine.game.effects.recruitmessage")
HeartBurst = require("src.engine.game.effects.heartburst")
HealSparkle = require("src.engine.game.effects.healsparkle")
SpareSparkle = require("src.engine.game.effects.sparesparkle")
SpareZ = require("src.engine.game.effects.sparez")
SleepMistEffect = require("src.engine.game.effects.sleepmisteffect")
IceSpellEffect = require("src.engine.game.effects.icespelleffect")
IceSpellBurst = require("src.engine.game.effects.icespellburst")
SnowGraveSnowflake = require("src.engine.game.effects.snowgravesnowflake")
FatalEffect = require("src.engine.game.effects.fataleffect")
RudeBusterBeam = require("src.engine.game.effects.rudebusterbeam")
RudeBusterBurst = require("src.engine.game.effects.rudebusterburst")

Shop = require("src.engine.game.shop")
Shopkeeper = require("src.engine.game.shop.shopkeeper")

GameOver = require("src.engine.game.gameover")

DarkTransition = require("src.engine.game.darktransition.darktransition")

Hotswapper = require("src.hotswapper")

-- Register required in the hotswapper
Hotswapper.updateFiles("required")

function love.run()
    if not love.timer then
        error("love.timer is required")
    end

---@diagnostic disable-next-line: undefined-field, redundant-parameter
    if love.load then love.load(love.arg.parseGameArguments(arg), arg) end

    -- We don't want the first frame's DT to include time taken by love.load.
    if love.timer then love.timer.step() end

    local accumulator = 0
    local error_result

    local function doUpdate(dt)
        -- Update pressed keys, handle key repeat
        Input.update()

        -- Process events.
        if love.event then
            love.event.pump()
            for name, a,b,c,d,e,f in love.event.poll() do
                if name == "quit" then
                    if not love.quit or not love.quit() then
                        return a or 0
                    end
                end
---@diagnostic disable-next-line: undefined-field
                love.handlers[name](a,b,c,d,e,f)
            end
        end

        -- Call update
        if love.update then
            love.update(dt)
        end
    end

    local function doDraw()
        if love.graphics and love.graphics.isActive() then
            love.graphics.origin()
            love.graphics.clear(love.graphics.getBackgroundColor())

---@diagnostic disable-next-line: undefined-field
            if love.draw then love.draw() end

            love.graphics.present()
        end
    end

    local function mainLoop()
        local frame_skip = Kristal and Kristal.Config and Kristal.Config["frameSkip"]

        if FRAMERATE > 0 and not FAST_FORWARD then
            local tick_rate = 1 / FRAMERATE

            local dt = love.timer.step()
            accumulator = accumulator + dt

            local update = false
            while accumulator >= tick_rate do
                accumulator = accumulator - tick_rate
                update = true
            end

            FPS_TIMER = FPS_TIMER + dt
            if FPS_TIMER >= 1 then
                FPS = FPS_COUNTER
                FPS_COUNTER = 0
                FPS_TIMER = FPS_TIMER - 1
            end

            if update then
                FPS_COUNTER = FPS_COUNTER + 1
                local update_dt = tick_rate
                if frame_skip then
                    update_dt = math.min(math.max(dt, tick_rate), 1/20) -- Limit dt to at least 20fps if frameSkip is enabled to avoid huge breakage
                end
                local ret = doUpdate(update_dt)
                if ret then return ret end
                doDraw()
            end
        else
            -- Limit dt to 30fps (or 20fps if frameSkip is enabled)
            -- Don't want to go unlimited or else collision and other stuff might break
            local dt = math.min(love.timer.step(), frame_skip and (1/20) or (1/30))

            FPS = love.timer.getFPS()

            local ret = doUpdate(dt)
            if ret then return ret end

            doDraw()
        end
        love.timer.sleep(0.001)
    end

    -- Main loop time.
    return function()
        if error_result then
            local result = error_result()
            if result then
                if result == "reload" then
                    Mod = nil
                    error_result = nil
                    Kristal.returnToMenu()
                else
                    if love.quit then
                        love.quit()
                    end
                    return result
                end
            end
        else
            local success, result = xpcall(mainLoop, Kristal.errorHandler)
            if success then
                return result
            else
                error_result = result
            end
        end
    end
end