/// <summary>
/// Creates a chain.
/// </summary>
/// <param slotName="world">The world.</param>
/// <param slotName="start">The start.</param>
/// <param slotName="end">The end.</param>
/// <param slotName="linkWidth">The width.</param>
/// <param slotName="linkHeight">The height.</param>
/// <param slotName="numberOfLinks">The number of links.</param>
/// <param slotName="linkDensity">The link density.</param>
/// <param slotName="attachRopeJoint">Creates a rope joint between start and end. This enforces the length of the rope. Said in another way: it makes the rope less bouncy.</param>
/// <returns></returns>
public static Path CreateChain(World world, Vector2 start, Vector2 end, float linkWidth, float linkHeight, int numberOfLinks, float linkDensity, bool attachRopeJoint)
{
Debug.Assert(numberOfLinks >= 2);
//Chain start / end
Path path = new Path();
path.Add(start);
path.Add(end);
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(linkWidth, linkHeight), linkDensity);
//Use PathManager to create all the chainlinks based on the chainlink created before.
List <Body> chainLinks = PathManager.EvenlyDistributeShapesAlongPath(world, path, shape, BodyType.Dynamic, numberOfLinks);
//TO DO
//if (fixStart)
//{
// //Fix the first chainlink to the world
// JointFactory.CreateFixedRevoluteJoint(world, chainLinks[0], new Vector2(0, -(linkHeight / 2)),
// chainLinks[0].Position);
//}
//if (fixEnd)
//{
// //Fix the last chainlink to the world
// JointFactory.CreateFixedRevoluteJoint(world, chainLinks[chainLinks.Count - 1],
// new Vector2(0, (linkHeight / 2)),
// chainLinks[chainLinks.Count - 1].Position);
//}
//Attach all the chainlinks together with a revolute joint
PathManager.AttachBodiesWithRevoluteJoint(world, chainLinks, new Vector2(0, -linkHeight), new Vector2(0, linkHeight), false, false);
if (attachRopeJoint)
{
JointFactory.CreateRopeJoint(world, chainLinks[0], chainLinks[chainLinks.Count - 1], Vector2.Zero, Vector2.Zero);
}
return(path);
}
/// <summary>
/// Creates the chain.
/// </summary>
/// <returns>The chain.</returns>
/// <param name="world">World.</param>
/// <param name="start">Start.</param>
/// <param name="end">End.</param>
/// <param name="linkWidth">Link width.</param>
/// <param name="linkHeight">Link height.</param>
/// <param name="numberOfLinks">Number of links.</param>
/// <param name="linkDensity">Link density.</param>
/// <param name="attachRopeJoint">Creates a rope joint between start and end. This enforces the length of the rope. Said in another way: it makes the rope less bouncy.</param>
/// <param name="fixStart">If set to <c>true</c> fix start.</param>
/// <param name="fixEnd">If set to <c>true</c> fix end.</param>
public static List <Body> CreateChain(World world, Vector2 start, Vector2 end, float linkWidth, float linkHeight, int numberOfLinks, float linkDensity, bool attachRopeJoint, bool fixStart = false, bool fixEnd = false)
{
Debug.Assert(numberOfLinks >= 2);
// Chain start / end
var path = new Path();
path.Add(start);
path.Add(end);
// A single chainlink
var shape = new PolygonShape(PolygonTools.CreateRectangle(linkWidth, linkHeight), linkDensity);
// Use PathManager to create all the chainlinks based on the chainlink created before.
var chainLinks = PathManager.EvenlyDistributeShapesAlongPath(world, path, shape, BodyType.Dynamic, numberOfLinks);
if (fixStart)
{
// Fix the first chainlink to the world
var axle = BodyFactory.CreateCircle(world, 0.1f, 1, chainLinks[0].Position);
JointFactory.CreateRevoluteJoint(world, chainLinks[0], axle, new Vector2(0, -(linkHeight / 2)), Vector2.Zero);
}
if (fixEnd)
{
// Fix the last chainlink to the world
var lastIndex = chainLinks.Count - 1;
var axle = BodyFactory.CreateCircle(world, 0.1f, 1, chainLinks[lastIndex].Position);
JointFactory.CreateRevoluteJoint(world, chainLinks[lastIndex], axle, new Vector2(0, -(linkHeight / 2)), Vector2.Zero);
}
// Attach all the chainlinks together with a revolute joint
PathManager.AttachBodiesWithRevoluteJoint(world, chainLinks, new Vector2(0, -linkHeight), new Vector2(0, linkHeight), false, false);
if (attachRopeJoint)
{
JointFactory.CreateRopeJoint(world, chainLinks[0], chainLinks[chainLinks.Count - 1], Vector2.Zero, Vector2.Zero);
}
return(chainLinks);
}
/// <summary>
/// Creates a chain.
/// </summary>
/// <param name="world">The world.</param>
/// <param name="start">The start.</param>
/// <param name="end">The end.</param>
/// <param name="linkWidth">The width.</param>
/// <param name="linkHeight">The height.</param>
/// <param name="numberOfLinks">The number of links.</param>
/// <param name="linkDensity">The link density.</param>
/// <returns></returns>
public static Path CreateChain(World world, Vector2 start, Vector2 end, float linkWidth, float linkHeight, int numberOfLinks, float linkDensity)
{
//Chain start / end
Path path = new Path();
path.Add(start);
path.Add(end);
//A single chainlink
PolygonShape shape = new PolygonShape(PolygonTools.CreateRectangle(linkWidth, linkHeight), linkDensity);
//Use PathManager to create all the chainlinks based on the chainlink created before.
List <Body> chainLinks = PathManager.EvenlyDistributeShapesAlongPath(world, path, shape, BodyType.Dynamic,
numberOfLinks);
//Attach all the chainlinks together with a revolute joint
PathManager.AttachBodiesWithRevoluteJoint(world, chainLinks, new Vector2(0, -linkHeight),
new Vector2(0, linkHeight),
false, false);
return(path);
}
