/// <summary>
/// Assemble the body for the given entity.
/// </summary>
/// <param name="entity">The entity.</param>
/// <param name="args">The assembler args.</param>
public void AssembleBody(Entity entity, HumanoidAssemblerArgs args)
{
// Randomise the sprite variations
int clothesVariation = this.world.Resources.GetRandomSpriteVariation("body", "torso", args.SpriteFamily);
int headVariation = this.world.Resources.GetRandomSpriteVariation("body", "head", args.SpriteFamily);
int beardVariation = this.world.Resources.GetRandomSpriteVariation("body", "beard", args.SpriteFamily);
// Create the body parts
BodyPartInfo torso = this.AssembleBodyPart(
entity,
BodyPart.Torso,
"torso",
args.SpriteFamily,
args.BodyPosition + args.TorsoPosition,
args.CollisionGroup,
clothesVariation);
BodyPartInfo head = this.AssembleBodyPart(
entity,
BodyPart.Head,
"head",
args.SpriteFamily,
args.BodyPosition + args.HeadPosition,
args.CollisionGroup,
clothesVariation);
BodyPartInfo leftArm = this.AssembleBodyPart(
entity,
BodyPart.Arm,
"arm",
args.SpriteFamily,
args.BodyPosition + args.ArmPosition,
args.CollisionGroup,
clothesVariation);
BodyPartInfo rightArm = this.AssembleBodyPart(
entity,
BodyPart.Arm,
"arm",
args.SpriteFamily,
args.BodyPosition + args.ArmPosition + args.LeftToRightOffset,
args.CollisionGroup,
clothesVariation);
BodyPartInfo leftLeg = this.AssembleBodyPart(
entity,
BodyPart.Leg,
"leg",
args.SpriteFamily,
args.BodyPosition + args.LegPosition,
args.CollisionGroup);
BodyPartInfo rightLeg = this.AssembleBodyPart(
entity,
BodyPart.Leg,
"leg",
args.SpriteFamily,
args.BodyPosition + args.LegPosition + args.LeftToRightOffset,
args.CollisionGroup);
BodyPartInfo beard = this.AssembleBodyPart(
entity,
BodyPart.Beard,
"beard",
args.SpriteFamily,
args.BodyPosition + args.BeardPosition,
args.CollisionGroup,
beardVariation,
false);
// Create the joints
this.CreateFixedJoint(head, beard);
this.CreateRotationalJoint(
torso,
head,
args.NeckJointPosition.Position - args.HeadPosition,
args.NeckJointPosition.EnableLimit,
args.NeckJointPosition.UpperLimit,
args.NeckJointPosition.LowerLimit,
args.NeckJointPosition.EnableMotor,
args.NeckJointPosition.MaxMotorTorque);
this.CreateRotationalJoint(
torso,
leftArm,
args.ShoulderJointPosition.Position - args.ArmPosition,
args.NeckJointPosition.EnableLimit,
args.NeckJointPosition.UpperLimit,
args.NeckJointPosition.LowerLimit,
args.NeckJointPosition.EnableMotor,
args.NeckJointPosition.MaxMotorTorque);
this.CreateRotationalJoint(
torso,
rightArm,
args.ShoulderJointPosition.Position - args.ArmPosition,
args.NeckJointPosition.EnableLimit,
args.NeckJointPosition.UpperLimit,
args.NeckJointPosition.LowerLimit,
args.NeckJointPosition.EnableMotor,
args.NeckJointPosition.MaxMotorTorque);
this.CreateRotationalJoint(
torso,
leftLeg,
args.HipJointPosition.Position - args.LegPosition,
args.NeckJointPosition.EnableLimit,
args.NeckJointPosition.UpperLimit,
args.NeckJointPosition.LowerLimit,
args.NeckJointPosition.EnableMotor,
args.NeckJointPosition.MaxMotorTorque);
this.CreateRotationalJoint(
torso,
rightLeg,
args.HipJointPosition.Position - args.LegPosition,
args.NeckJointPosition.EnableLimit,
args.NeckJointPosition.UpperLimit,
args.NeckJointPosition.LowerLimit,
args.NeckJointPosition.EnableMotor,
args.NeckJointPosition.MaxMotorTorque);
}
/// <summary>
/// Create the body part entity.
/// </summary>
/// <param name="bodyEntity">The body entity that the torso belongs to.</param>
/// <param name="bodyPart">The type of body part.</param>
/// <param name="spriteType">The sprite type.</param>
/// <param name="spriteFamily">The sprite family.</param>
/// <param name="position">The world position of the body part.</param>
/// <param name="collisionGroup">The collision group of the body part.</param>
/// <param name="spriteVariation">The sprite variation.</param>
/// <param name="isPhysical">Indicates whether the body part can collide with physics objects.</param>
/// <returns>The body part entity and the component.</returns>
private BodyPartInfo AssembleBodyPart(
Entity bodyEntity,
BodyPart bodyPart,
string spriteType,
string spriteFamily,
Vector2 position,
short collisionGroup,
int spriteVariation = -1,
bool isPhysical = true)
{
Entity entity = this.world.EntityManager.CreateEntity();
// Add the body part
var bodyPartComponent = new BodyPartComponent(bodyEntity, bodyPart);
this.world.EntityManager.AddComponent(entity, bodyPartComponent);
// Add the sprite
string spriteName =
this.world.Resources.GetSpriteName("body", spriteType, spriteFamily, spriteVariation);
this.world.EntityManager.AddComponent(entity, new SpriteComponent(spriteName));
Body body;
if (isPhysical)
{
// Get the texture data for the sprite
Rectangle rectangle = this.world.Resources.GetSpriteRectangle(spriteName);
uint[] spriteData = new uint[rectangle.Width * rectangle.Height];
this.world.Resources.SpriteSheet.GetData(0, rectangle, spriteData, 0, spriteData.Length);
// Create a polygon for the sprite texture
Vertices vertices = PolygonTools.CreatePolygon(spriteData, rectangle.Width, true);
// Scale the vertices from pixels to physics-world units
var scale = new Vector2(Const.PixelsToMeters, -Const.PixelsToMeters);
vertices.Scale(ref scale);
// Partition into smaller polygons to split concave segments
List<Vertices> convexVertices = BayazitDecomposer.ConvexPartition(vertices);
// Create the body
body = BodyFactory.CreateCompoundPolygon(this.world.Physics, convexVertices, 1.0f);
}
else
{
// Create a tiny rectangle since this isn't a physical body. A body is just created so that the body
// part can be welded onto other parts
body = BodyFactory.CreateRectangle(this.world.Physics, 0.001f, 0.001f, 1.0f);
}
body.IsStatic = false;
body.CollisionGroup = collisionGroup;
body.IsSensor = !isPhysical;
// Add the physics component
var physicsComponent = new PhysicsComponent(body);
this.world.EntityManager.AddComponent(entity, physicsComponent);
// Add the position component
this.world.EntityManager.AddComponent(entity, new PositionComponent(body, position));
// Add the scale component
this.world.EntityManager.AddComponent(entity, new ScaleComponent(Const.PixelsToMeters));
return new BodyPartInfo(entity, bodyPartComponent, physicsComponent);
}
/// <summary>
/// Initializes a new instance of the BodyPartInfo class.
/// </summary>
/// <param name="entity">The body part entity.</param>
/// <param name="bodyPartComponent">The body part component.</param>
/// <param name="physicsComponent">The physics component.</param>
public BodyPartInfo(Entity entity, BodyPartComponent bodyPartComponent, PhysicsComponent physicsComponent)
{
this.Entity = entity;
this.BodyPartComponent = bodyPartComponent;
this.PhysicsComponent = physicsComponent;
}
/// <summary>
/// Initializes a new instance of the BodyPartComponent class.
/// </summary>
/// <param name="parentEntity">The parent entity.</param>
/// <param name="bodyPart">The body part type.</param>
public BodyPartComponent(Entity parentEntity, BodyPart bodyPart)
{
this.ParentEntity = parentEntity;
this.BodyPart = bodyPart;
this.Joints = new List<Joint>();
}
