public static boolean isPointInside(
Polygon polygon, float x, float y, boolean toleranceOnOutside) {
float verts[] = polygon.getTransformedVertices();
boolean inside = false;
float oldX = verts[verts.length - 2];
float oldY = verts[verts.length - 1];
float oldSqDist = Vector2.dst2(oldX, oldY, x, y);
for (int i = 0; i < verts.length; i += 2) {
float newX = verts[i];
float newY = verts[i + 1];
float newSqDist = Vector2.dst2(newX, newY, x, y);
if (oldSqDist
+ newSqDist
+ 2.0f * Math.sqrt(oldSqDist * newSqDist)
- Vector2.dst2(newX, newY, oldX, oldY)
< TOLERANCE_IS_POINT_INSIDE) return toleranceOnOutside;
float leftX = newX;
float leftY = newY;
float rightX = oldX;
float rightY = oldY;
if (newX > oldX) {
leftX = oldX;
leftY = oldY;
rightX = newX;
rightY = newY;
}
if (leftX < x
&& x <= rightX
&& (y - leftY) * (rightX - leftX) < (rightY - leftY) * (x - leftX)) inside = !inside;
oldX = newX;
oldY = newY;
oldSqDist = newSqDist;
}
return inside;
}
public void rayCast(RayCastCallback callback, Vector2 point1, Vector2 point2) {
if (point1.dst2(point2) <= ZERO) {
Gdx.app.log("World.rayCast", "Called with zero distance");
return;
}
callback.reset();
callback.result.start.set(toBox(tmp1.set(point1)));
callback.result.end.set(toBox(tmp2.set(point2)));
world.rayCast(callback, tmp1, tmp2);
callback.result.scl(toWorldScale());
}
private void setClosestStartPosition(final Vector2 position) {
Gdx.app.debug(
TAG,
"setClosestStartPosition INPUT: ("
+ position.x
+ ","
+ position.y
+ ") "
+ currentMapType.toString());
// Get last known position on this map
playerStartPositionRect.set(0, 0);
closestPlayerStartPosition.set(0, 0);
float shortestDistance = 0f;
// Go through all player start positions and choose closest to last known position
for (MapObject object : spawnsLayer.getObjects()) {
String objectName = object.getName();
if (objectName == null || objectName.isEmpty()) {
continue;
}
if (objectName.equalsIgnoreCase(PLAYER_START)) {
((RectangleMapObject) object).getRectangle().getPosition(playerStartPositionRect);
float distance = position.dst2(playerStartPositionRect);
Gdx.app.debug(TAG, "DISTANCE: " + distance + " for " + currentMapType.toString());
if (distance < shortestDistance || shortestDistance == 0) {
closestPlayerStartPosition.set(playerStartPositionRect);
shortestDistance = distance;
Gdx.app.debug(
TAG,
"closest START is: ("
+ closestPlayerStartPosition.x
+ ","
+ closestPlayerStartPosition.y
+ ") "
+ currentMapType.toString());
}
}
}
playerStart = closestPlayerStartPosition.cpy();
}
public boolean checkCollision(Entity e) {
if (collidable
&& e.collidable
&& position.dst2(e.getPosition()) < MathUtils.sqr(radius + e.getRadius())) return true;
return false;
}