Initial commit

23 files changed, 597 insertions, 0 deletions

diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/Button.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/Button.kt
new file mode 100644
index 0000000..9b39e4b
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/Button.kt
@@ -0,0 +1,65 @@
+package de.romjaki.pluggabledino.api
+
+import de.romjaki.pluggabledino.buttonImage
+import de.romjaki.pluggabledino.drawImageCentered
+import de.romjaki.pluggabledino.drawStringCentered
+import de.romjaki.pluggabledino.font
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Input
+import java.awt.Rectangle
+import kotlin.math.min
+
+class Button(private val text: String, val x: Float, val y: Float) {
+
+    val width = min(buttonImage.width, font.getWidth(text) + 10)
+    val image = buttonImage.getScaledCopy(width, buttonImage.height)
+
+    private var lastClicked = false
+
+    val leftX
+        get() = x - width / 2
+    val rightX
+        get() = x + width / 2
+    val topY
+        get() = y - image.height / 2
+    val bottomY
+        get() = y + image.height / 2
+
+    val rectangle
+        get() = Rectangle(leftX.toInt(), topY.toInt(), (rightX - leftX).toInt(), (bottomY - topY).toInt())
+
+
+    private val clickHandlers = mutableListOf<() -> Unit>()
+
+    fun addClickHandler(handler: () -> Unit) {
+        clickHandlers.add(handler)
+    }
+
+    fun draw(g: Graphics) {
+        g.drawImageCentered(image, x, y)
+        g.drawStringCentered(text, x, y)
+    }
+
+    override fun toString(): String =
+            "X: $leftX - $rightX, $topY - $bottomY, width=$width"
+
+    fun enter() {
+        lastClicked = true
+    }
+
+    fun isClicked(input: Input): Boolean =
+            input.isMouseButtonDown(Input.MOUSE_LEFT_BUTTON) && isMouseOver(input)
+
+    fun update(input: Input) {
+        val ret = isClicked(input)
+        if (!lastClicked && ret) {
+            clickHandlers.forEach({ it() })
+        }
+        lastClicked = ret
+    }
+
+    fun isMouseOver(input: Input): Boolean =
+            rectangle.contains(input.mouseX, input.mouseY)
+
+}
+
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/Dependency.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/Dependency.kt
new file mode 100644
index 0000000..65c8b06
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/Dependency.kt
@@ -0,0 +1,3 @@
+package de.romjaki.pluggabledino.api
+
+data class Dependency(var dependencyName: String, var dependencyVersion: String)
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/DependencyMissing.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/DependencyMissing.kt
new file mode 100644
index 0000000..85769f7
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/DependencyMissing.kt
@@ -0,0 +1,4 @@
+package de.romjaki.pluggabledino.api
+
+class DependencyMissing(plugin: String, dependencyName: String, dependencyVersion: String) :
+        Exception("$plugin is missing dependency ${dependencyName}with version $dependencyVersion")
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/Event.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/Event.kt
new file mode 100644
index 0000000..4aa702d
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/Event.kt
@@ -0,0 +1,3 @@
+package de.romjaki.pluggabledino.api
+
+interface Event
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/EventHandler.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/EventHandler.kt
new file mode 100644
index 0000000..989fb81
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/EventHandler.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.api
+
+@Target(AnnotationTarget.FUNCTION)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class EventHandler
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/Events.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/Events.kt
new file mode 100644
index 0000000..6f43844
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/Events.kt
@@ -0,0 +1,15 @@
+package de.romjaki.pluggabledino.api
+
+import java.util.*
+
+object Events {
+    fun broadcastEvent(event: Event) {
+        for (plugin in PluginLoader.plugins.values) {
+            Arrays.stream(plugin.javaClass.methods!!)
+                    .filter { it.getAnnotation(EventHandler::class.java) != null }
+                    .filter { it.parameterCount == 1 }
+                    .filter { it.parameterTypes[0].isInstance(event) }
+                    .forEach { it.invoke(plugin, event) }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/IPlugin.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/IPlugin.kt
new file mode 100644
index 0000000..e2e25fc
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/IPlugin.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.api;
+
+open class IPlugin {
+    var meta: PluginMeta? = null
+}
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/Inject.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/Inject.kt
new file mode 100644
index 0000000..c3089c9
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/Inject.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.api
+
+@Target(AnnotationTarget.FIELD)
+@Retention(AnnotationRetention.RUNTIME)
+annotation class Inject(val what: String)
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/InjectException.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/InjectException.kt
new file mode 100644
index 0000000..2dc14dd
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/InjectException.kt
@@ -0,0 +1,3 @@
+package de.romjaki.pluggabledino.api
+
+class InjectException(plugin: String, dependency: String) : Exception("$plugin failed to load $dependency")
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/PluginFolderNotFound.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginFolderNotFound.kt
new file mode 100644
index 0000000..5ca946f
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginFolderNotFound.kt
@@ -0,0 +1,3 @@
+package de.romjaki.pluggabledino.api
+
+class PluginFolderNotFound(folder: String) : Exception("Plugin folder not found at $folder")
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/PluginLoader.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginLoader.kt
new file mode 100644
index 0000000..7ce8649
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginLoader.kt
@@ -0,0 +1,76 @@
+package de.romjaki.pluggabledino.api
+
+import com.beust.klaxon.Klaxon
+import java.io.File
+import java.net.URL
+import java.net.URLClassLoader
+import java.util.*
+
+
+object PluginLoader {
+    private val _plugins: MutableMap<String, IPlugin> = mutableMapOf()
+    private val klaxon = Klaxon()
+    private const val pluginFolder = "plugins"
+
+    val plugins
+        get() = _plugins.toMap()
+
+
+    fun loadPlugin(url: URL): IPlugin? {
+        val cl = URLClassLoader(arrayOf(url))
+        val pluginInfo = klaxon.parse<PluginMeta>(
+                Scanner(
+                        cl.getResourceAsStream("plugin.json"))
+                        .useDelimiter("\\A")
+                        .next())!!
+        val pluginClass = cl.loadClass(pluginInfo.clazz)
+        if (!IPlugin::class.java.isAssignableFrom(pluginClass)) {
+            return null
+        }
+        val plugin = pluginClass.newInstance() as IPlugin
+        plugin.meta = pluginInfo
+        _plugins[pluginInfo.name] = plugin
+        return plugin
+    }
+
+    private fun checkDependencies() {
+        for ((name, instance) in _plugins) {
+            for (dep in instance.meta!!.dependencies) {
+                if (!_plugins.containsKey(dep.dependencyName)) {
+                    throw DependencyMissing(name, dep.dependencyName, dep.dependencyVersion)
+                }
+                val dependency = _plugins[dep.dependencyName]!!
+                if (dep.dependencyVersion.matches(dependency.meta!!.name.toRegex())) {
+                    throw DependencyMissing(name, dep.dependencyName, dep.dependencyVersion)
+                }
+            }
+        }
+    }
+
+    fun loadPlugins() = loadPlugins(File(pluginFolder))
+    fun loadPlugins(folder: File) {
+        if (!folder.isDirectory) {
+            throw PluginFolderNotFound(folder.absolutePath)
+        }
+        folder.listFiles { _, filename -> filename.endsWith(".jar") }
+                .map {
+                    it.toURI().toURL()
+                }.forEach { loadPlugin(it) }
+        checkDependencies()
+        injectDependencies()
+    }
+
+
+    private fun injectDependencies() {
+        for ((name, instance) in _plugins) {
+            for (field in instance.javaClass.fields) {
+                val inject = field.getAnnotation(Inject::class.java) as Inject
+                if (_plugins.containsKey(inject.what)) {
+                    field.set(instance, _plugins[inject.what])
+                } else {
+                    throw InjectException(name, inject.what)
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/api/PluginMeta.kt b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginMeta.kt
new file mode 100644
index 0000000..aec7e35
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/api/PluginMeta.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.api
+
+import com.beust.klaxon.Json
+
+data class PluginMeta(var name: String, var version: String, @Json(name = "class") var clazz: String, var dependencies: MutableList<Dependency> = mutableListOf())
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/assets.kt b/src/main/kotlin/de/romjaki/pluggabledino/assets.kt
new file mode 100644
index 0000000..6a0e600
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/assets.kt
@@ -0,0 +1,28 @@
+package de.romjaki.pluggabledino
+
+import org.newdawn.slick.Animation
+import org.newdawn.slick.Image
+import org.newdawn.slick.SpriteSheet
+import org.newdawn.slick.UnicodeFont
+import org.newdawn.slick.opengl.TextureLoader
+import java.awt.Font
+import java.io.FileInputStream
+
+val splash = Image(TextureLoader.getTexture("PNG", FileInputStream("assets/images/splash.png")))
+val dinoSprites = SpriteSheet("assets/images/characters.png", 32, 32)
+val dinoAnimated = Animation(dinoSprites, intArrayOf(
+        0, 0,
+        1, 0,
+        2, 0,
+        3, 0,
+        4, 0,
+        5, 0,
+        6, 0,
+        7, 0
+), IntArray(8) { 100 })
+val font = UnicodeFont(Font("Arial", Font.PLAIN, 14))
+val buttonImage = Image(TextureLoader.getTexture("PNG", FileInputStream("assets/images/button.png")))
+
+val groundline = Image(TextureLoader.getTexture("PNG", FileInputStream("assets/images/groundline.png")))
+
+val cactusImg = Image(TextureLoader.getTexture("PNG", FileInputStream("assets/images/cactus.png")))
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/events/InitEvent.kt b/src/main/kotlin/de/romjaki/pluggabledino/events/InitEvent.kt
new file mode 100644
index 0000000..e82529c
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/events/InitEvent.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.events
+
+import de.romjaki.pluggabledino.api.Event
+
+class InitEvent : Event
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/events/PostInitEvent.kt b/src/main/kotlin/de/romjaki/pluggabledino/events/PostInitEvent.kt
new file mode 100644
index 0000000..757888e
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/events/PostInitEvent.kt
@@ -0,0 +1,5 @@
+package de.romjaki.pluggabledino.events
+
+import de.romjaki.pluggabledino.api.Event
+
+class PostInitEvent : Event
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/events/PreInitEvent.kt b/src/main/kotlin/de/romjaki/pluggabledino/events/PreInitEvent.kt
new file mode 100644
index 0000000..75d7acc
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/events/PreInitEvent.kt
@@ -0,0 +1,6 @@
+package de.romjaki.pluggabledino.events
+
+import de.romjaki.pluggabledino.api.Event
+
+
+class PreInitEvent : Event
\ No newline at end of file
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/game/GameWorld.kt b/src/main/kotlin/de/romjaki/pluggabledino/game/GameWorld.kt
new file mode 100644
index 0000000..cc940cf
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/game/GameWorld.kt
@@ -0,0 +1,109 @@
+package de.romjaki.pluggabledino.game
+
+import org.jbox2d.callbacks.ContactImpulse
+import org.jbox2d.callbacks.ContactListener
+import org.jbox2d.collision.Manifold
+import org.jbox2d.collision.shapes.PolygonShape
+import org.jbox2d.common.Vec2
+import org.jbox2d.dynamics.*
+import org.jbox2d.dynamics.contacts.Contact
+import org.newdawn.slick.Input
+
+class GameWorld : ContactListener {
+    override fun endContact(contact: Contact?) {
+
+    }
+
+    override fun beginContact(contact: Contact?) {
+        contact!!
+        val bodies = listOf(contact.fixtureA.body, contact.fixtureB.body)
+        if (bodies.contains(dino) && cacti.any { bodies.contains(it) }) {
+            hurt = true
+        }
+    }
+
+    override fun preSolve(contact: Contact?, oldManifold: Manifold?) {
+    }
+
+    override fun postSolve(contact: Contact?, impulse: ContactImpulse?) {
+    }
+
+    var hurt = false
+
+    val world: World
+
+    val cacti = mutableListOf<Body>()
+
+    val cactiBodyDef: BodyDef
+
+    val groundBody: Body
+
+    val dino: Body
+
+    val groundBodyDef: BodyDef
+
+    val groundBox: PolygonShape
+
+    val dinoDef: BodyDef
+
+    val dinoBox: PolygonShape
+
+    val dinoFixtureDef: FixtureDef
+
+    init {
+        val gravity = Vec2(0f, 10f)
+        world = World(gravity)
+
+        //#region GROUND
+        groundBodyDef = BodyDef()
+        groundBodyDef.position.set(0f, 50f)
+        groundBody = world.createBody(groundBodyDef)
+        groundBox = PolygonShape()
+        groundBox.setAsBox(50f, 10f)
+        groundBody.createFixture(groundBox, 0f)
+        //#endregion
+
+        //#region DINO
+        dinoDef = BodyDef()
+        dinoDef.type = BodyType.DYNAMIC
+        dinoDef.position.set(4f, 39f)
+        dino = world.createBody(dinoDef)
+        dinoBox = PolygonShape()
+        dinoBox.setAsBox(1f, 1f)
+        dinoFixtureDef = FixtureDef()
+        dinoFixtureDef.shape = dinoBox
+        dinoFixtureDef.density = 0.9f
+        dinoFixtureDef.friction = 0.3f
+        dino.createFixture(dinoFixtureDef)
+        //#endregion
+
+        cactiBodyDef = BodyDef()
+
+        createCactus()
+    }
+
+    fun createCactus() {
+        val body = world.createBody(cactiBodyDef)
+        val shape = PolygonShape()
+        shape.setAsBox(1f, 1f)
+        body.createFixture(shape, 0f)
+        cacti.add(body)
+    }
+
+
+    fun update(delta: Float, input: Input) {
+        if (input.isKeyDown(Input.KEY_UP)) {
+            if (isDinoOnGround()) {
+                print("Jump")
+                dino.applyForceToCenter(Vec2(0f, -2000f))
+            }
+        }
+        world.step(delta, 4, 3)
+        world.setContactListener(this)
+    }
+
+    private fun isDinoOnGround(): Boolean =
+            dino.linearVelocity.y == 0.0f
+
+}
+
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/main.kt b/src/main/kotlin/de/romjaki/pluggabledino/main.kt
new file mode 100644
index 0000000..a829089
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/main.kt
@@ -0,0 +1,49 @@
+package de.romjaki.pluggabledino
+
+import de.romjaki.pluggabledino.api.Events
+import de.romjaki.pluggabledino.api.PluginLoader
+import de.romjaki.pluggabledino.events.InitEvent
+import de.romjaki.pluggabledino.events.PostInitEvent
+import de.romjaki.pluggabledino.events.PreInitEvent
+import de.romjaki.pluggabledino.states.GameState
+import de.romjaki.pluggabledino.states.MainMenu
+import de.romjaki.pluggabledino.states.SettingsState
+import de.romjaki.pluggabledino.states.SplashScreen
+import org.newdawn.slick.AppGameContainer
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Input
+import org.newdawn.slick.state.StateBasedGame
+
+
+const val WIDTH = 640
+const val HEIGHT = 480
+const val FPS = 60
+const val VERSION = 1.0
+
+const val SPLASHSCREEN = 0
+const val MAINMENU = 1
+const val SETTINGS = 3
+const val GAME = 2
+
+fun main(args: Array<String>) {
+    PluginLoader.loadPlugins()
+    Input.disableControllers()
+    val app = AppGameContainer(Application())
+    app.setDisplayMode(WIDTH, HEIGHT, false)
+    app.setTargetFrameRate(FPS)
+    app.setShowFPS(true)
+    Events.broadcastEvent(PreInitEvent())
+    Events.broadcastEvent(InitEvent())
+    Events.broadcastEvent(PostInitEvent())
+    app.start()
+
+}
+
+class Application : StateBasedGame("Dino Game v$VERSION") {
+    override fun initStatesList(container: GameContainer?) {
+        addState(SplashScreen())
+        addState(MainMenu())
+        addState(SettingsState())
+        addState(GameState())
+    }
+}
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/states/GameState.kt b/src/main/kotlin/de/romjaki/pluggabledino/states/GameState.kt
new file mode 100644
index 0000000..479f7f7
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/states/GameState.kt
@@ -0,0 +1,45 @@
+package de.romjaki.pluggabledino.states
+
+import de.romjaki.pluggabledino.*
+import de.romjaki.pluggabledino.game.GameWorld
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Input
+import org.newdawn.slick.state.BasicGameState
+import org.newdawn.slick.state.StateBasedGame
+
+class GameState : BasicGameState() {
+    override fun init(container: GameContainer?, game: StateBasedGame?) {
+    }
+
+    override fun enter(container: GameContainer?, game: StateBasedGame?) {
+        world = GameWorld()
+    }
+
+    override fun update(container: GameContainer?, game: StateBasedGame?, delta: Int) {
+        if (container!!.input.isKeyDown(Input.KEY_R)) {
+            world = GameWorld()
+        }
+        world.update(delta / 1000f, container.input)
+        dinoAnimated.update(delta.toLong())
+    }
+
+    lateinit var world: GameWorld
+
+    override fun getID(): Int =
+            GAME
+
+
+    override fun render(container: GameContainer?, game: StateBasedGame?, g: Graphics?) {
+        g!!
+        g.background = Color.lightGray
+        g.color = Color.red
+        g.drawImage(dinoAnimated.currentFrame, world.dino.position.x * WIDTH / 50, world.dino.position.y * HEIGHT / 50 - dinoAnimated.height)
+        g.drawImage(groundline, 0f, HEIGHT * 39 / 50f)
+        for (cactus in world.cacti) {
+            g.drawImage(cactusImg, cactus.position.x, cactus.position.y)
+        }
+    }
+
+}
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/states/MainMenu.kt b/src/main/kotlin/de/romjaki/pluggabledino/states/MainMenu.kt
new file mode 100644
index 0000000..f10a470
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/states/MainMenu.kt
@@ -0,0 +1,52 @@
+package de.romjaki.pluggabledino.states
+
+import de.romjaki.pluggabledino.*
+import de.romjaki.pluggabledino.api.Button
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Input
+import org.newdawn.slick.state.BasicGameState
+import org.newdawn.slick.state.StateBasedGame
+
+class MainMenu : BasicGameState() {
+    override fun init(container: GameContainer?, game: StateBasedGame?) {
+        game!!
+        settingsButton.addClickHandler {
+            game.enterState(SETTINGS)
+        }
+        playButton.addClickHandler {
+            game.enterState(GAME)
+        }
+    }
+
+    override fun enter(container: GameContainer?, game: StateBasedGame?) {
+        settingsButton.enter()
+        playButton.enter()
+    }
+
+    override fun update(container: GameContainer?, game: StateBasedGame?, delta: Int) {
+        container!!
+        game!!
+        dinoAnimated.update(delta.toLong())
+        if (container.input.isKeyDown(Input.KEY_Q)) {
+            System.exit(0)
+        }
+        settingsButton.update(container.input)
+        playButton.update(container.input)
+    }
+
+    override fun getID(): Int =
+            MAINMENU
+
+    val playButton = Button("PLAY", WIDTH / 2f, HEIGHT / 2f + 50)
+    val settingsButton = Button("SETTINGS", WIDTH / 2f, HEIGHT / 2f + 100)
+    override fun render(container: GameContainer?, game: StateBasedGame?, g: Graphics?) {
+        g!!
+        g.background = Color.lightGray
+        g.drawImage(dinoAnimated.currentFrame, WIDTH / 2f - 16, HEIGHT / 2f - 16f)
+        playButton.draw(g)
+        settingsButton.draw(g)
+    }
+
+}
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/states/SettingsState.kt b/src/main/kotlin/de/romjaki/pluggabledino/states/SettingsState.kt
new file mode 100644
index 0000000..5003232
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/states/SettingsState.kt
@@ -0,0 +1,42 @@
+package de.romjaki.pluggabledino.states
+
+import de.romjaki.pluggabledino.HEIGHT
+import de.romjaki.pluggabledino.MAINMENU
+import de.romjaki.pluggabledino.SETTINGS
+import de.romjaki.pluggabledino.WIDTH
+import de.romjaki.pluggabledino.api.Button
+import org.newdawn.slick.Color
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.state.BasicGameState
+import org.newdawn.slick.state.StateBasedGame
+
+class SettingsState : BasicGameState() {
+    override fun init(container: GameContainer?, game: StateBasedGame?) {
+        game!!
+        backButton.addClickHandler {
+            game.enterState(MAINMENU)
+        }
+    }
+
+    override fun enter(container: GameContainer?, game: StateBasedGame?) {
+        backButton.enter()
+    }
+
+    override fun update(container: GameContainer?, game: StateBasedGame?, delta: Int) {
+        container!!
+        backButton.update(container.input)
+    }
+
+    override fun getID(): Int =
+            SETTINGS
+
+    val backButton = Button("BACK", WIDTH / 2f, HEIGHT / 8 * 7f)
+
+    override fun render(container: GameContainer?, game: StateBasedGame?, g: Graphics?) {
+        g!!
+        g.background = Color.lightGray
+        backButton.draw(g)
+    }
+
+}
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/states/SplashScreen.kt b/src/main/kotlin/de/romjaki/pluggabledino/states/SplashScreen.kt
new file mode 100644
index 0000000..d39b31a
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/states/SplashScreen.kt
@@ -0,0 +1,41 @@
+package de.romjaki.pluggabledino.states
+
+import de.romjaki.pluggabledino.*
+import org.newdawn.slick.GameContainer
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Image
+import org.newdawn.slick.Input
+import org.newdawn.slick.state.BasicGameState
+import org.newdawn.slick.state.StateBasedGame
+
+
+class SplashScreen : BasicGameState() {
+    override fun init(container: GameContainer?, game: StateBasedGame?) {
+    }
+
+    override fun update(container: GameContainer?, game: StateBasedGame?, delta: Int) {
+        container!!
+        game!!
+        val input = container.input
+        if (input.isMousePressed(Input.MOUSE_LEFT_BUTTON)) {
+            input.clearMousePressedRecord()
+            game.enterState(MAINMENU)
+        }
+        if (input.isKeyDown(Input.KEY_Q)) {
+            System.exit(0)
+        }
+    }
+
+    override fun getID(): Int =
+            SPLASHSCREEN
+
+
+    override fun render(container: GameContainer?, game: StateBasedGame?, g: Graphics?) {
+        g!!
+        g.drawImage(splash, 0f, 0f)
+        g.drawStringCentered("CLICK ANYWHERE TO CONTINUE", WIDTH / 2f, HEIGHT / 2f)
+    }
+
+}
+
+
diff --git a/src/main/kotlin/de/romjaki/pluggabledino/util.kt b/src/main/kotlin/de/romjaki/pluggabledino/util.kt
new file mode 100644
index 0000000..de434e0
--- /dev/null
+++ b/src/main/kotlin/de/romjaki/pluggabledino/util.kt
@@ -0,0 +1,23 @@
+package de.romjaki.pluggabledino
+
+import org.jbox2d.common.Vec2
+import org.newdawn.slick.Graphics
+import org.newdawn.slick.Image
+import org.newdawn.slick.Input
+
+fun Graphics.drawStringCentered(s: String, x: Float, y: Float) {
+    val h = font.getHeight(s)
+    val w = font.getWidth(s)
+    drawString(s, x - w / 2f, y - h / 2f)
+}
+
+fun Graphics.drawImageCentered(image: Image, x: Float, y: Float) {
+    drawImage(image, x - image.width / 2f, y - image.height / 2)
+}
+
+operator fun Vec2.plus(vec2: Vec2): Vec2? = add(vec2)
+
+fun Graphics.drawMousePointer(input: Input) {
+    fillOval(input.mouseX - 5f, input.mouseY - 5f, 10f, 10f)
+}
+