/******************************************************************************* * Copyright 2014 See AUTHORS file. * * 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.badlogic.ashley.tests.systems; import com.badlogic.ashley.core.ComponentMapper; import com.badlogic.ashley.core.Engine; import com.badlogic.ashley.core.Entity; import com.badlogic.ashley.core.EntitySystem; import com.badlogic.ashley.core.Family; import com.badlogic.ashley.tests.components.PositionComponent; import com.badlogic.ashley.tests.components.VisualComponent; import com.badlogic.ashley.utils.ImmutableArray; import com.badlogic.gdx.graphics.OrthographicCamera; import com.badlogic.gdx.graphics.g2d.SpriteBatch; public class RenderSystem extends EntitySystem { private ImmutableArray<Entity> entities; private SpriteBatch batch; private OrthographicCamera camera; private ComponentMapper<PositionComponent> pm = ComponentMapper.getFor(PositionComponent.class); private ComponentMapper<VisualComponent> vm = ComponentMapper.getFor(VisualComponent.class); public RenderSystem (OrthographicCamera camera) { batch = new SpriteBatch(); this.camera = camera; } @Override public void addedToEngine (Engine engine) { entities = engine.getEntitiesFor(Family.all(PositionComponent.class, VisualComponent.class).get()); } @Override public void removedFromEngine (Engine engine) { } @Override public void update (float deltaTime) { PositionComponent position; VisualComponent visual; camera.update(); batch.begin(); batch.setProjectionMatrix(camera.combined); for (int i = 0; i < entities.size(); ++i) { Entity e = entities.get(i); position = pm.get(e); visual = vm.get(e); batch.draw(visual.region, position.x, position.y); } batch.end(); } }