Android Open Source - mobius Collision Box Rendering Debug System

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License

The source code is released under:

MIT License

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Java Source Code

package com.sgtcodfish.mobiusListing.systems;
//from w w w.  j a v a  2 s  .  co m
import com.artemis.ComponentMapper;
import com.artemis.Entity;
import com.artemis.Filter;
import com.artemis.systems.EntityProcessingSystem;
import com.badlogic.gdx.graphics.Camera;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import com.badlogic.gdx.math.Vector2;
import com.sgtcodfish.mobiusListing.components.ChildLinked;
import com.sgtcodfish.mobiusListing.components.Position;
import com.sgtcodfish.mobiusListing.components.Solid;

/**
 * Draws the rectangles of collision boxes for debugging purposes.
 * 
 * @author Ashley Davis (SgtCoDFish)
 */
public class CollisionBoxRenderingDebugSystem extends EntityProcessingSystem {
  private ShapeRenderer          renderer    = null;

  private ComponentMapper<Position>    positionMapper  = null;
  private ComponentMapper<Solid>      solidMapper    = null;

  private ComponentMapper<ChildLinked>  linkedMapper  = null;

  private Camera              camera      = null;

  @SuppressWarnings("unchecked")
  public CollisionBoxRenderingDebugSystem(Camera camera) {
    this(camera, Filter.allComponents(Position.class, Solid.class));
  }

  protected CollisionBoxRenderingDebugSystem(Camera camera, Filter filter) {
    super(filter);

    this.camera = camera;
  }

  @Override
  public void initialize() {
    renderer = new ShapeRenderer();
    renderer.setColor(Color.PINK);

    positionMapper = world.getMapper(Position.class);
    solidMapper = world.getMapper(Solid.class);
    linkedMapper = world.getMapper(ChildLinked.class);
  }

  @Override
  protected void begin() {
    renderer.setProjectionMatrix(camera.combined);
    renderer.begin(ShapeType.Line);
    super.begin();
  }

  @Override
  protected void process(Entity e) {
    Vector2 p = positionMapper.get(e).position;
    Solid s = solidMapper.get(e);
    ChildLinked cl = linkedMapper.get(e);

    renderer.rect(p.x, p.y - (cl == null ? 0 : s.boundingBox.height), s.boundingBox.width, s.boundingBox.height);
  }

  @Override
  protected void end() {
    renderer.end();
    super.end();
  }
}

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