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Entity system support for libGDX with dagger support.
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/*
 *   Copyright (c) 2023. Ned Wolpert 
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 *
 */

package com.codeheadsystems.gamelib.entity.entitysystem;

import static com.codeheadsystems.gamelib.core.util.LoggerHelper.logger;

import com.badlogic.ashley.core.ComponentMapper;
import com.badlogic.ashley.core.Engine;
import com.badlogic.ashley.core.Entity;
import com.badlogic.ashley.core.Family;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.utils.Logger;
import com.codeheadsystems.gamelib.entity.component.SortComponent;
import com.codeheadsystems.gamelib.entity.component.SpriteComponent;
import javax.inject.Inject;
import javax.inject.Singleton;

/**
 * Purpose: Render anything with a sprite.
 */
@Singleton
public class SpriteBatchRenderer extends WrapperSortedIteratingSystem {

  private static final Logger LOGGER = logger(SpriteBatchRenderer.class);
  private final ComponentMapper sm = ComponentMapper.getFor(SpriteComponent.class);
  private final SpriteBatch spriteBatch;

  /**
   * Instantiates a new Sprite batch renderer.
   *
   * @param spriteBatch    the sprite batch
   * @param sortComparator the sort comparator
   */
  @Inject
  public SpriteBatchRenderer(final SpriteBatch spriteBatch,
                             final SortComparator sortComparator) {
    super(
        Family.all(SpriteComponent.class, SortComponent.class).get(),
        sortComparator,
        Priorities.SPRITES.priority()); // run after everything else
    this.spriteBatch = spriteBatch;
    LOGGER.info("Created");
  }

  @Override
  public void beforeIteration(float deltaTime) {
    spriteBatch.begin();
  }

  @Override
  public void processEntity(Entity entity, float deltaTime) {
    sm.get(entity).getSprite().draw(spriteBatch);
  }

  @Override
  public void afterIteration(float deltaTime) {
    spriteBatch.end();
  }

  @Override
  public void addedToEngine(final Engine engine) {
    LOGGER.debug("Added engine: " + engine);
    super.addedToEngine(engine);
  }

  @Override
  public void entityAdded(final Entity entity) {
    LOGGER.debug("Added entity: " + entity);
    super.entityAdded(entity);
  }
}