com.codeheadsystems.gamelib.hex.entitysystem.HexShapeRenderer Maven / Gradle / Ivy

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/*
 *   Copyright (c) 2022. 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.hex.entitysystem;

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

import com.badlogic.ashley.core.ComponentMapper;
import com.badlogic.ashley.core.Entity;
import com.badlogic.ashley.core.Family;
import com.badlogic.ashley.systems.IteratingSystem;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.utils.Logger;
import com.codeheadsystems.gamelib.entity.entitysystem.Priorities;
import com.codeheadsystems.gamelib.hex.component.HexComponent;
import javax.inject.Inject;
import javax.inject.Singleton;

@Singleton
public class HexShapeRenderer extends IteratingSystem {

    private static final Logger LOGGER = logger(HexShapeRenderer.class);
    private final ComponentMapper hm = ComponentMapper.getFor(HexComponent.class);
    private final ShapeRenderer shapeRenderer;

    @Inject
    public HexShapeRenderer(final ShapeRenderer shapeRenderer) {
        super(Family.all(HexComponent.class).get(), Priorities.BACKGROUND_LAYER1.priority());
        this.shapeRenderer = shapeRenderer;
        LOGGER.debug("HexShapeRenderer()");
    }

    @Override
    public void update(float deltaTime) {
        beforeIteration(deltaTime);
        super.update(deltaTime);
        afterIteration(deltaTime);
    }

    @Override protected void processEntity(final Entity entity,
                                           final float deltaTime) {
        shapeRenderer.polygon(hm.get(entity).vertices());
    }

    /**
     * Override this if you need something to execute before the start of the
     * batch.
     *
     * @param deltaTime time since last execution.
     */
    public void beforeIteration(final float deltaTime) {
        shapeRenderer.begin(ShapeRenderer.ShapeType.Line);
    }

    /**
     * Override this if you want to handle the end of the entity.
     *
     * @param deltaTime time since last execution.
     */
    public void afterIteration(final float deltaTime) {
        shapeRenderer.end();
    }
}