public void Attach(Ball b) {
b.Body.Position = body.Position - new Vector2(0, height / 2.0f + b.Radius + 0.5f);
//b.Body.CollidesWith = Category.None;
//b.Body.CollisionCategories = Category.Cat2;
b.Body.Mass = 0.0001f;
ballAttachments.Add(JointFactory.CreateWeldJoint(world, body, b.Body, Vector2.Zero, new Vector2(0, height / 2.0f + b.Radius)));
float diameterSum = 0;
foreach (WeldJoint wj in ballAttachments) {
diameterSum += (wj.BodyB.UserData as Ball).Radius * 2;
}
float distanceSoFar = 0;
for (int i = 0; i < ballAttachments.Count; i++) {
ballAttachments[i].LocalAnchorB = new Vector2(distanceSoFar - diameterSum/2.0f + (ballAttachments[i].BodyB.UserData as Ball).Radius, height / 2.0f + (ballAttachments[i].BodyB.UserData as Ball).Radius);
ballAttachments[i].BodyB.Position = body.Position - new Vector2(distanceSoFar - diameterSum / 2.0f, height / 2.0f + (ballAttachments[i].BodyB.UserData as Ball).Radius);
distanceSoFar += (ballAttachments[i].BodyB.UserData as Ball).Radius * 2;
}
//world.RemoveJoint
}
public void SplitBalls(Player player)
{
for(int i = gameObjects.Count - 1; i >= 0; i--)
{
if (gameObjects[i] is Ball && (gameObjects[i] as Ball).Owner == player) {
float angle = (float)Game1.rand.NextDouble() * MathHelper.TwoPi;
Vector2 heading = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle));
(gameObjects[i] as Ball).Launch(heading);
for(int j = 0; j < Game1.rand.Next(2,5); j++)
{
if (player.Balls >= 15)
continue;
angle = (float)Game1.rand.NextDouble() * MathHelper.TwoPi;
heading = new Vector2((float)Math.Cos(angle), (float)Math.Sin(angle));
player.AddBall();
Ball b = new Ball(player, gameObjects[i].Position + new Vector2(0, 0.001f), ConvertUnits.ToSimUnits(10.0f), ConvertUnits.ToSimUnits(screenHeight), world);
gameObjects.Add(b);
b.Launch(heading);
}
}
}
}
/// <summary>
/// Spawns a ball and attaches it to player's paddle
/// </summary>
/// <param name="player"></param>
public void SpawnBall(Player player) {
player.AddBall();
Ball b = new Ball(player, ConvertUnits.ToSimUnits(new Vector2(screenWidth / 2.0f, screenHeight - 400.0f)), ConvertUnits.ToSimUnits(10.0f), ConvertUnits.ToSimUnits(screenHeight), world);
gameObjects.Add(b);
player.Paddle.Attach(b);
}