ParticleTextureSample.java

/*
 * The MIT License (MIT)
 *
 * FXGL - JavaFX Game Library
 *
 * Copyright (c) 2015-2017 AlmasB (almaslvl@gmail.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package s07particles;

import com.almasb.fxgl.app.ApplicationMode;
import com.almasb.fxgl.app.GameApplication;
import com.almasb.fxgl.core.math.FXGLMath;
import com.almasb.fxgl.ecs.AbstractControl;
import com.almasb.fxgl.ecs.Entity;
import com.almasb.fxgl.effect.ParticleControl;
import com.almasb.fxgl.effect.ParticleEmitter;
import com.almasb.fxgl.effect.ParticleEmitters;
import com.almasb.fxgl.entity.Entities;
import com.almasb.fxgl.input.UserAction;
import com.almasb.fxgl.settings.GameSettings;
import javafx.geometry.Point2D;
import javafx.scene.effect.BlendMode;
import javafx.scene.input.MouseButton;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;

import static java.lang.Math.*;

/**
 * Using particles with source images and colorization.
 *
 * @author Almas Baimagambetov (AlmasB) (almaslvl@gmail.com)
 */
public class ParticleTextureSample extends GameApplication {

    @Override
    protected void initSettings(GameSettings settings) {
        settings.setWidth(800);
        settings.setHeight(600);
        settings.setTitle("ParticleTextureSample");
        settings.setVersion("0.1");
        settings.setFullScreen(false);
        settings.setIntroEnabled(false);
        settings.setMenuEnabled(false);
        settings.setCloseConfirmation(false);
        settings.setProfilingEnabled(true);
        settings.setApplicationMode(ApplicationMode.DEVELOPER);
    }

    private ParticleEmitter emitter;
    private Entity entity;

    @Override
    protected void initInput() {
        getInput().addAction(new UserAction("Change Color") {
            @Override
            protected void onActionBegin() {
                emitter.setBlendMode(emitter.getBlendMode() == BlendMode.SRC_OVER ? BlendMode.ADD : BlendMode.SRC_OVER);
                emitter.setSourceImage(getAssetLoader().loadTexture("particleTexture2.png")
                        .multiplyColor(Color.color(FXGLMath.random(), FXGLMath.random(), FXGLMath.random())).getImage());
            }
        }, MouseButton.PRIMARY);
    }

    @Override
    protected void initGame() {
        Entities.builder()
                .viewFromNode(new Rectangle(getWidth(), getHeight()))
                .buildAndAttach(getGameWorld());

        emitter = ParticleEmitters.newFireEmitter();
        emitter.setSize(5, 20);
        emitter.setNumParticles(7);
        emitter.setEmissionRate(1);
        emitter.setSourceImage(getAssetLoader().loadTexture("particleTexture2.png").multiplyColor(Color.rgb(230, 75, 40)).getImage());

        entity = Entities.builder()
                .at(getWidth() / 2, getHeight() / 2)
                .with(new ParticleControl(emitter), new ButterflyControl())
                .buildAndAttach(getGameWorld());
    }

    private class ButterflyControl extends AbstractControl {

        private double t = 0;

        @Override
        public void onUpdate(Entity entity, double tpf) {
            Entities.getPosition(entity).setValue(curveFunction().add(getWidth() / 2, getHeight() / 2));

            t += tpf;
        }

        private Point2D curveFunction() {
            double x = sin(t) * (pow(E, cos(t)) - 2 * cos(4*t) - pow(sin(t/12), 5));
            double y = cos(t) * (pow(E, cos(t)) - 2 * cos(4*t) - pow(sin(t/12), 5));

            return new Point2D(x, -y).multiply(85);
        }
    }

    public static void main(String[] args) {
        launch(args);
    }
}