Terrarum/src/net/torvald/terrarum/StateSplash.kt

package net.torvald.terrarum

import com.jme3.math.FastMath
import net.torvald.terrarum.gameactors.roundInt
import net.torvald.terrarum.gamecontroller.Key
import net.torvald.terrarum.langpack.Lang
import net.torvald.terrarum.ui.DrawUtil
import net.torvald.terrarum.ui.NullUI
import net.torvald.terrarum.ui.UIItemImageGallery
import net.torvald.terrarum.ui.Typography
import org.newdawn.slick.Color
import org.newdawn.slick.GameContainer
import org.newdawn.slick.Graphics
import org.newdawn.slick.Image
import org.newdawn.slick.state.BasicGameState
import org.newdawn.slick.state.StateBasedGame
import java.util.*

/**
 * Created by minjaesong on 16-08-04.
 */
class StateSplash : BasicGameState() {

    val pictogramCollection = ArrayList<Image>()

    val virtualImageHeight = 100
    var imageBoardHeight = 0
    var imageBoardOffset = 0

    lateinit var fadeSheet: Image
    lateinit var thisG: Graphics

    var opacity = 0f

    val fadeTime = 500
    var fadeTimer = -1

    var anykey_hit = false

    val backgroundColour = Color(0x303030)

    val deltathre = 500

    val auto_dismiss = 6500

    var opened = false

    var init = false

    lateinit var imageGallery: UIItemImageGallery

    override fun init(container: GameContainer?, game: StateBasedGame?) {
        // pre-load lang
        Lang["MENU_LANGUAGE_THIS"]

        pictogramCollection.add(Image("./assets/graphics/gui/health_take_a_break.tga"))
        pictogramCollection.add(Image("./assets/graphics/gui/health_distance.tga"))

        fadeSheet = Image(Terrarum.WIDTH, Terrarum.HEIGHT)
        thisG = fadeSheet.graphics
        thisG.font = Terrarum.fontGame

        imageBoardHeight = Terrarum.HEIGHT - thisG.font.lineHeight.times(6)
        imageBoardOffset = thisG.font.lineHeight.times(3)

        imageGallery = UIItemImageGallery(
                NullUI(), 0, imageBoardOffset, Terrarum.WIDTH, imageBoardHeight, pictogramCollection
        )
    }

    override fun update(container: GameContainer, game: StateBasedGame, delta: Int) {
        // next splash or load next scene
        if (anykey_hit && opacity < 0.0001f) {
            game.enterState(Terrarum.STATE_ID_GAME)
        }

        // fade-in
        if (delta < deltathre) {
            init = true
            fadeTimer += delta

            if (opacity < 1f && !anykey_hit) {
                opacity = FastMath.interpolateLinear(
                        fadeTimer.toFloat() / fadeTime, 0f, 1f
                )
            }
            else if (opacity > 0f && anykey_hit) {
                opacity = FastMath.interpolateLinear(
                        fadeTimer.toFloat() / fadeTime, 1f, 0f
                )
            }

            if (!opened && fadeTimer >= fadeTime && !anykey_hit) {
                fadeTimer = 0
                opened = true
            }
        }

        // auto dismiss
        if (opened && fadeTimer >= auto_dismiss) {
            doAnykeyThingy()
        }
    }

    override fun getID(): Int = Terrarum.STATE_ID_SPLASH

    override fun render(container: GameContainer, game: StateBasedGame, g: Graphics) {
        thisG.color = backgroundColour
        thisG.fillRect(0f, 0f, fadeSheet.width.toFloat(), fadeSheet.height.toFloat())

        thisG.color = Color.white

        Typography.printCentered(thisG, Lang["APP_WARNING_HEALTH_AND_SAFETY"],
                thisG.font.lineHeight * 2)

        Typography.printCentered(thisG, Lang["MENU_LABEL_PRESS_ANYKEY"],
                Terrarum.HEIGHT - thisG.font.lineHeight.times(3))

        imageGallery.render(container, thisG)

        g.drawImage(fadeSheet, 0f, 0f, Color(1f, 1f, 1f, opacity))
    }

    override fun keyPressed(key: Int, c: Char) {
        doAnykeyThingy()
    }

    override fun controllerButtonPressed(controller: Int, button: Int) {
        doAnykeyThingy()
    }

    private fun doAnykeyThingy() {
        if (!anykey_hit) {
            anykey_hit = true
            fadeTimer = 0
        }
    }
}