org.cobogw.pongy.client.BarComputer.java Source code

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Here is the source code for org.cobogw.pongy.client.BarComputer.java

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/*
 * Copyright 2009 Hilbrand Bouwkamp, hs@bouwkamp.com
 * 
 * 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 org.cobogw.pongy.client;

import org.cobogw.gwt.user.client.CSS;

import com.google.gwt.user.client.Random;

public class BarComputer extends Bar {
    private int reactonx = 0;
    private int margin = 0;
    private final int width;
    private final int maxmargin = 30;
    private final int randupper = 1000;
    private final int maxspeed = 3;
    private final int reactrand = 100;

    public BarComputer(int height, int width, int barwidth) {
        super(height, barwidth, BAR_POSITION.RIGHT);
        this.width = width;
        getElement().getStyle().setPropertyPx(CSS.A.RIGHT, 0);
        reactonx = width / 2;
    }

    public void move(Ball ball) {
        final int bty = ball.getTopY();
        final int bby = ball.getBottomY();
        final int ct = getTopY();
        final int cb = getBottomY();
        if (ball.getX() < reactonx || ball.getDirX() < 0) {
            return;
        }
        final boolean rand = Random.nextInt(randupper) > reactrand ? true : false;
        final float r2 = maxspeed * (Random.nextInt(randupper) / (float) randupper);

        if (ct + margin > bty && rand) {
            super.move(-1 * r2);
        } else if (cb + margin < bby && rand) {
            super.move(1 * r2);
        }
    }

    public void start(int pComputer, int pYou) {
        super.start();
        int total = pComputer + pYou + 1;
        reactonx = width / 3 + (int) ((width / 3) * 1 * ((float) pComputer / (total)));
        margin = maxmargin - (pYou * maxmargin) / total;
    }
}