Scene2dPursueTest.java

/*******************************************************************************
 * 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.
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package com.badlogic.gdx.ai.tests.steer.scene2d.tests;

import com.badlogic.gdx.ai.steer.behaviors.Pursue;
import com.badlogic.gdx.ai.steer.behaviors.Wander;
import com.badlogic.gdx.ai.tests.SteeringBehaviorsTest;
import com.badlogic.gdx.ai.tests.steer.scene2d.Scene2dSteeringTest;
import com.badlogic.gdx.ai.tests.steer.scene2d.SteeringActor;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.ui.Label;
import com.badlogic.gdx.scenes.scene2d.ui.Slider;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
import com.badlogic.gdx.utils.Align;

/** A class to test and experiment with the {@link Pursue} behavior.
 * 
 * @autor davebaol */
public class Scene2dPursueTest extends Scene2dSteeringTest {
	SteeringActor character;
	SteeringActor prey;

	public Scene2dPursueTest (SteeringBehaviorsTest container) {
		super(container, "Pursue");
	}

	@Override
	public void create () {
		super.create();

		character = new SteeringActor(container.badlogicSmall, false);
		character.setPosition(MathUtils.random(container.stageWidth), MathUtils.random(container.stageHeight), Align.center);
		character.setMaxLinearSpeed(100);
		character.setMaxLinearAcceleration(600);

		prey = new SteeringActor(container.target, false);
		prey.setPosition(MathUtils.random(container.stageWidth), MathUtils.random(container.stageHeight), Align.center);
		prey.setMaxLinearSpeed(100);
		prey.setMaxLinearAcceleration(250);
		prey.setMaxAngularAcceleration(0); // used by Wander; set to 0 because independent facing is disabled
		prey.setMaxAngularSpeed(5);

		final Pursue<Vector2> pursueSB = new Pursue<Vector2>(character, prey, 0.3f);
		character.setSteeringBehavior(pursueSB);

		Wander<Vector2> wanderSB = new Wander<Vector2>(prey) //
			// Don't use Face internally because independent facing is off
			.setFaceEnabled(false) //
			// No need to call setAlignTolerance, setDecelerationRadius and setTimeToTarget for the same reason
			.setWanderOffset(110) //
			.setWanderOrientation(10) //
			.setWanderRadius(64) //
			.setWanderRate(MathUtils.PI2 * 3.5f);
		prey.setSteeringBehavior(wanderSB);

		testTable.addActor(character);
		testTable.addActor(prey);

		Table detailTable = new Table(container.skin);

		detailTable.row();
		addMaxLinearAccelerationController(detailTable, character, 0, 2000, 20);

		detailTable.row();
		final Label labelMaxPredictionTime = new Label("Max.Prediction Time[" + pursueSB.getMaxPredictionTime() + "] sec.",
			container.skin);
		detailTable.add(labelMaxPredictionTime);
		detailTable.row();
		Slider maxPredictionTime = new Slider(0, 5, .1f, false, container.skin);
		maxPredictionTime.setValue(pursueSB.getMaxPredictionTime());
		maxPredictionTime.addListener(new ChangeListener() {
			@Override
			public void changed (ChangeEvent event, Actor actor) {
				Slider slider = (Slider)actor;
				pursueSB.setMaxPredictionTime(slider.getValue());
				labelMaxPredictionTime.setText("Max.Prediction Time [" + slider.getValue() + "] sec.");
			}
		});
		detailTable.add(maxPredictionTime);

		detailTable.row();
		addSeparator(detailTable);

		detailTable.row();
		addMaxLinearSpeedController(detailTable, character, 0, 300, 10);

		detailWindow = createDetailWindow(detailTable);
	}

	@Override
	public void draw () {
	}

	@Override
	public void dispose () {
		super.dispose();
	}

}