added lwjgl library to gradle

build.gradle

@@ -53,6 +53,8 @@ project(":desktop") {
 }
 
 project(":core") {
+    project.ext.lwjglVersion = "3.2.3"
+    project.ext.lwjglNatives = "natives-windows"
     apply plugin: "java-library"
 
 
@@ -62,6 +64,11 @@ project(":core") {
         api "com.badlogicgames.gdx:gdx-ai:$aiVersion"
         api "com.badlogicgames.box2dlights:box2dlights:$box2DLightsVersion"
         api "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
+
+        implementation platform("org.lwjgl:lwjgl-bom:$lwjglVersion")
+
+        implementation "org.lwjgl:lwjgl"
+        runtimeOnly "org.lwjgl:lwjgl::$lwjglNatives"
         
     }
 }

core/src/temp/Animator.java

@@ -0,0 +1,88 @@
+package netwerkprog.game;
+
+import com.badlogic.gdx.ApplicationListener;
+import com.badlogic.gdx.Gdx;
+import com.badlogic.gdx.graphics.GL20;
+import com.badlogic.gdx.graphics.Texture;
+import com.badlogic.gdx.graphics.g2d.Animation;
+import com.badlogic.gdx.graphics.g2d.SpriteBatch;
+import com.badlogic.gdx.graphics.g2d.TextureRegion;
+
+public class Animator implements ApplicationListener {
+
+    // Constant rows and columns of the sprite sheet
+    private static final int FRAME_COLS = 6, FRAME_ROWS = 5;
+
+    // Objects used
+    Animation<TextureRegion> walkAnimation; // Must declare frame type (TextureRegion)
+    Texture walkSheet;
+    SpriteBatch spriteBatch;
+
+    // A variable for tracking elapsed time for the animation
+    float stateTime;
+
+    @Override
+    public void create() {
+
+        // Load the sprite sheet as a Texture
+        walkSheet = new Texture(Gdx.files.internal("sprite-animation1.png"));
+
+        // Use the split utility method to create a 2D array of TextureRegions. This is
+        // possible because this sprite sheet contains frames of equal size and they are
+        // all aligned.
+        TextureRegion[][] tmp = TextureRegion.split(walkSheet,
+                walkSheet.getWidth() / FRAME_COLS,
+                walkSheet.getHeight() / FRAME_ROWS);
+
+        // Place the regions into a 1D array in the correct order, starting from the top
+        // left, going across first. The Animation constructor requires a 1D array.
+        TextureRegion[] walkFrames = new TextureRegion[FRAME_COLS * FRAME_ROWS];
+        int index = 0;
+        for (int i = 0; i < FRAME_ROWS; i++) {
+            for (int j = 0; j < FRAME_COLS; j++) {
+                walkFrames[index++] = tmp[i][j];
+            }
+        }
+
+        // Initialize the Animation with the frame interval and array of frames
+        walkAnimation = new Animation<TextureRegion>(0.025f, walkFrames);
+
+        // Instantiate a SpriteBatch for drawing and reset the elapsed animation
+        // time to 0
+        spriteBatch = new SpriteBatch();
+        stateTime = 0f;
+    }
+
+    @Override
+    public void resize(int width, int height) {
+
+    }
+
+    @Override
+    public void render() {
+        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); // Clear screen
+        stateTime += Gdx.graphics.getDeltaTime(); // Accumulate elapsed animation time
+
+        // Get current frame of animation for the current stateTime
+        TextureRegion currentFrame = walkAnimation.getKeyFrame(stateTime, true);
+        spriteBatch.begin();
+        spriteBatch.draw(currentFrame, 50, 50); // Draw current frame at (50, 50)
+        spriteBatch.end();
+    }
+
+    @Override
+    public void pause() {
+
+    }
+
+    @Override
+    public void resume() {
+
+    }
+
+    @Override
+    public void dispose() { // SpriteBatches and Textures must always be disposed
+        spriteBatch.dispose();
+        walkSheet.dispose();
+    }
+}