Create basic Animator

app/src/main/java/com/bartlomiejpluta/samplegame/game/animation/AnimationableObject.java

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+package com.bartlomiejpluta.samplegame.game.animation;
+
+import com.bartlomiejpluta.samplegame.core.gl.object.material.Material;
+import com.bartlomiejpluta.samplegame.core.gl.object.mesh.Mesh;
+import com.bartlomiejpluta.samplegame.core.world.object.RenderableObject;
+import org.joml.Vector2f;
+import org.joml.Vector2i;
+
+public abstract class AnimationableObject extends RenderableObject {
+   public AnimationableObject(Mesh mesh, Material material) {
+      super(mesh);
+      setMaterial(material);
+      var dimensions = getSpriteSheetDimensions();
+      material.setSpriteSize(1/(float) dimensions.x, 1/(float) dimensions.y);
+   }
+
+   // Returns time in ms between frames
+   public abstract int getAnimationSpeed();
+
+   public abstract Vector2i getSpriteSheetDimensions();
+
+   public abstract boolean shouldAnimate();
+
+   public abstract Vector2f[] getSpriteAnimationFramesPositions();
+}

app/src/main/java/com/bartlomiejpluta/samplegame/game/animation/Animator.java

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+package com.bartlomiejpluta.samplegame.game.animation;
+
+public interface Animator {
+   void animate(AnimationableObject[] objects);
+}

app/src/main/java/com/bartlomiejpluta/samplegame/game/animation/DefaultAnimator.java

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+package com.bartlomiejpluta.samplegame.game.animation;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DefaultAnimator implements Animator {
+
+   @Override
+   public void animate(AnimationableObject[] objects) {
+      for (var object : objects) {
+         animate(object);
+      }
+   }
+
+   private void animate(AnimationableObject object) {
+      if(object.shouldAnimate()) {
+         var positions = object.getSpriteAnimationFramesPositions();
+         var delay = object.getAnimationSpeed();
+         var currentPosition = (int) (System.currentTimeMillis() % (positions.length * delay)) / delay;
+         var spriteSize = object.getMaterial().getSpriteSize();
+         var current = positions[currentPosition];
+         object.getMaterial().setSpritePosition(spriteSize.x * current.x, spriteSize.y * current.y);
+      }
+   }
+}