// updates the position of an entity within the level lines passed as parameter and in the playable zone
public void updateEntityPosition(Entity2D entity, Vector2 newPosition, List<Line> levelLines, bool keepInPlayableZone = false, bool arcadeLimitation = false)
{
float distanceToLine = 0.0f;
// set the new position
entity.position2D = newPosition;
// update the position controlling the collisions with all the scene and camera lines
for (int i = 0; i < levelLines.Count; ++i)
{
Vector2 v = levelLines[i].vectorToPoint(newPosition);
distanceToLine = Vector2.Distance(newPosition, v) - entity.getRadius();
if (distanceToLine < 0)
{
entity.position2D -= Vector2.Normalize(entity.position2D - v) * distanceToLine;
}
}
if (keepInPlayableZone)
{
Line[] cameraLines = Camera2D.playableZoneCollisions;
if (arcadeLimitation)
{
float newTop = Camera2D.position.Y + (Camera2D.screen.Height * 0.2f);
cameraLines[0].p1.Y = newTop;
cameraLines[0].p2.Y = newTop;
}
for (int i = 0; i < 4; ++i)
{
Vector2 v = cameraLines[i].vectorToPoint(newPosition);
distanceToLine = Vector2.Distance(newPosition, v) - entity.getRadius();
if (distanceToLine < 0)
{
entity.position2D -= Vector2.Normalize(entity.position2D - v) * distanceToLine;
}
}
}
}
