Basic Implementation of a Mover with more than 2 points (GameObjects) and added Jama (Java Matrix) library to the project

This commit is contained in:
Awlex 2016-11-19 00:06:55 +01:00
parent ffcdeed948
commit 5c5f6bd621
5 changed files with 186 additions and 0 deletions

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@ -209,5 +209,10 @@
<artifactId>lzma-java</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>gov.nist.math</groupId>
<artifactId>jama</artifactId>
<version>1.0.3</version>
</dependency>
</dependencies>
</project>

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package awlex.ospu.polymover;
import Jama.Matrix;
import itdelatrisu.opsu.objects.GameObject;
import static java.lang.Math.*;
/**
* Created by Awlex on 13.11.2016.
*/
public class Arc extends PolyMover {
private GameObject p1, middle, p2;
private double xm, ym, r, alpha, beta, gamma;
public Arc(GameObject p1, GameObject middle, GameObject p2) {
this.p1 = p1;
this.middle = middle;
this.p2 = p2;
init();
}
public Arc(PolyMover mover, GameObject p) {
GameObject[] items = mover.getItems();
p1 = items[items.length - 2];
middle = items[items.length - 1];
p2 = p;
init();
}
private void init() {
Matrix m = prepareMatrix(p1, middle, p2);
xm = m.get(2, 1);
ym = m.get(3, 1);
r = pow(xm, 2) + pow(ym, 2) - m.get(1, 1);
alpha = atan2(p1.end.y - ym, p1.end.x - xm);
beta = atan2(middle.end.y - ym, middle.end.x - xm);
gamma = atan2(p2.start.y - ym, p2.start.x - xm);
}
@Override
public double[] getPoint(int time) {
double percent;
double angle;
if (time < middle.getTime()) {
time -= p1.getEndTime();
percent = ((double) time) / ((middle.getTime() - p1.getEndTime()));
angle = alpha + beta * percent;
}
else {
time -= middle.getTime();
percent = ((double) time) / (p2.getTime() - middle.getTime());
angle = beta + gamma * percent;
}
return new double[]{
xm + r * cos(angle),
ym + r * sin(angle)
};
}
@Override
public GameObject[] getItems() {
return new GameObject[]{
p1,
middle,
p2
};
}
private Matrix prepareMatrix(GameObject p1, GameObject middle, GameObject p2) {
Matrix a = new Matrix(new double[][]{
{1, -p1.end.x, -p1.end.y},
{1, -middle.end.x, -middle.end.y},
{1, -p2.start.x, -p2.start.y}
});
Matrix b = new Matrix(new double[][]{
{-(pow(p1.end.x, 2) + pow(p1.end.y, 2))},
{-(pow(middle.end.x, 2) + pow(middle.end.y, 2))},
{-(pow(p2.start.x, 2) + pow(p2.start.y, 2))},
});
return a.solve(b);
}
public static boolean canCricleExistBetweenItems(GameObject p1, GameObject p2, GameObject p3) {
return !((p1.end.x == p2.start.x && p1.end.x == p3.start.x) || (p1.end.y == p2.start.y && p1.end.y == p3.start.y));
}
}

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package awlex.ospu.polymover;
import itdelatrisu.opsu.objects.GameObject;
/**
* Created by Awlex on 18.11.2016.
*/
public abstract class PolyMover {
public abstract double[] getPoint(int time);
public abstract GameObject[] getItems();
}

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package awlex.ospu.polymover.factory;
import awlex.ospu.polymover.Arc;
import awlex.ospu.polymover.PolyMover;
import itdelatrisu.opsu.objects.GameObject;
/**
* Created by Awlex on 18.11.2016.
*/
public class ArcFactory implements MultiMoverFactory {
private static final int PREFFERED_BUFFER_SIZE = 3;
private PolyMover arc1, arc2;
@Override
public double[] getPoint(int time) {
if (arc2 == null) {
return arc1.getPoint(time);
}
double[] point1 = arc1.getPoint(time);
double[] point2 = arc2.getPoint(time);
return new double[]{
(point1[0] + point2[0]) * 0.5,
(point1[1] + point2[1]) * 0.5
};
}
public void init(GameObject[] objects, int startIndex) {
if (objects == null)
throw new NullPointerException("Objects musn't be null");
if (objects.length < startIndex + 2)
arc1 = new Arc(objects[startIndex], objects[startIndex + 1], objects[startIndex + 2]);
arc2 = null;
}
public void update(GameObject p) {
if (arc2 != null)
arc1 = arc2;
arc2 = new Arc(arc1, p);
}
@Override
public int getPrefferedBufferSize() {
return PREFFERED_BUFFER_SIZE;
}
@Override
public String toString() {
return "Arcs";
}
}

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package awlex.ospu.polymover.factory;
import itdelatrisu.opsu.objects.GameObject;
/**
* Created by Awlex on 18.11.2016.
*/
public interface MultiMoverFactory {
/**
* @param time point in time whose cursor position has to be calculated
* @return [x, y]
*/
double[] getPoint(int time);
void init(GameObject[] objects, int startIndex);
void update(GameObject g);
/**
* How many items the Factory would like to look in the future
*
* @return
*/
int getPrefferedBufferSize();
}