-
Notifications
You must be signed in to change notification settings - Fork 3
/
HitboxesImpl.java
51 lines (46 loc) · 2.04 KB
/
HitboxesImpl.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
package gfight.world.hitbox.impl;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.prep.PreparedPolygon;
import org.locationtech.jts.geom.util.AffineTransformation;
import gfight.common.api.Position2D;
import gfight.common.api.Vect;
import gfight.common.impl.Position2DImpl;
import gfight.common.impl.VectorImpl;
import gfight.world.hitbox.api.Hitbox;
import gfight.world.hitbox.api.Hitboxes;
/**
* An implementation of Hitbox Interface.
*/
public final class HitboxesImpl implements Hitboxes {
@Override
public boolean isColliding(final Hitbox collider, final Hitbox collided) {
final PreparedPolygon myObject = new PreparedPolygon(collider.getPolygonalHitbox());
return myObject.intersects(collided.getPolygonalHitbox());
}
@Override
public List<Position2D> rotate(final List<Position2D> polygon, final double theta, final Position2D center) {
if (polygon.isEmpty()) {
return new ArrayList<>();
}
final Hitbox hitbox = new HitboxImpl(polygon);
final AffineTransformation rotation = AffineTransformation.rotationInstance(theta, center.getX(), center.getY());
final Coordinate[] rotatedCoordinates = rotation.transform(hitbox.getPolygonalHitbox()).getCoordinates();
return Arrays.stream(rotatedCoordinates)
.map(coordinate -> new Position2DImpl(coordinate.getX(), coordinate.getY()))
.collect(Collectors.toList());
}
@Override
public List<Position2D> rotateTo(final List<Position2D> polygon, final Vect pointingDir, final Position2D center,
final Position2D target) {
final Vect distance = new VectorImpl(center, target);
double rotation = pointingDir.anglecalc(distance);
if (pointingDir.getX() * distance.getY() - pointingDir.getY() * distance.getX() < 0) {
rotation = -rotation;
}
return rotate(polygon, rotation, center);
}
}