Fix ratio change not being handled correctly

core/src/main/kotlin/com/last/commit/FirstScreen.kt

@@ -21,15 +21,17 @@ import com.last.commit.map.TimeMap
 import com.last.commit.stages.InventoryStage
 import kotlin.math.floor
 
-
 /** First screen of the application. Displayed after the application is created. */
 class FirstScreen : Screen, InputProcessor {
+
+    val viewportSize = 800f
+
     private var delta = 0f
     private var isColliding = false
     val state = ColorState()
 
     val batch = SpriteBatch()
-    val camera = OrthographicCamera(800f, 600f)
+    val camera = OrthographicCamera(viewportSize, viewportSize)
     lateinit var map: TimeMap // = TimeMap("tiled/base.tmx")
     val playerTexture = Texture("sprites/characters.png")
     val player = Player(TextureRegion(playerTexture, 300, 44, 35, 43))
@@ -45,6 +47,7 @@ class FirstScreen : Screen, InputProcessor {
         val gameConfig = this.loadGameConfig()
         val randomMap = gameConfig.getRandomMap()
         map = TimeMap(randomMap)
+        handleRatioChange()
 
         this.spawnPlayer()
         this.updateCamera()
@@ -75,10 +78,7 @@ class FirstScreen : Screen, InputProcessor {
 
         val mousePosition: Vector2 = getMousePosition()
         player.lookAt(mousePosition)
-        val interactables = map.getInteractablesAt(
-            player.getAbsoluteDirection()
-        )
-
+        val interactables = map.getInteractablesAt(player.getAbsoluteDirection())
 
         batch.projectionMatrix = camera.combined
         batch.begin()
@@ -89,7 +89,6 @@ class FirstScreen : Screen, InputProcessor {
         // TODO: auslagern in sperate Methode
         renderInteractables(interactables)
 
-
         inventoryStage.draw()
     }
 
@@ -112,7 +111,8 @@ class FirstScreen : Screen, InputProcessor {
     }
 
     private fun getMousePosition(): Vector2 {
-        val unprojectedMousePosition = camera.unproject(Vector3(Gdx.input.x.toFloat(), Gdx.input.y.toFloat(), 0f))
+        val unprojectedMousePosition =
+                camera.unproject(Vector3(Gdx.input.x.toFloat(), Gdx.input.y.toFloat(), 0f))
         return Vector2(unprojectedMousePosition.x, unprojectedMousePosition.y)
     }
 
@@ -177,6 +177,7 @@ class FirstScreen : Screen, InputProcessor {
         val playerYPosition: Float = this.player.getY()
         val mapWidth: Int = map.width
         val mapHeight: Int = map.height
+
         cX = if (playerXPosition < halfScreenWidth) {
                 halfScreenWidth
             } else if (playerXPosition > mapWidth - halfScreenWidth) {
@@ -198,8 +199,25 @@ class FirstScreen : Screen, InputProcessor {
     }
 
     override fun resize(width: Int, height: Int) {
-        inventoryStage.resize(width, height)
         // Resize your screen here. The parameters represent the new window size.
+        inventoryStage.resize(width, height)
+        handleRatioChange()
+    }
+
+    fun handleRatioChange() {
+        val height = Gdx.graphics.height
+        val width = Gdx.graphics.width
+
+        val wRatio = width.toFloat() / height.toFloat()
+        val hRatio = height.toFloat() / width.toFloat()
+        if (wRatio < 1) {
+            camera.viewportWidth = viewportSize * wRatio
+            camera.viewportHeight = viewportSize
+        } else {
+            camera.viewportHeight = viewportSize * hRatio
+            camera.viewportWidth = viewportSize
+        }
+        updateCamera()
     }
 
     override fun pause() {