/// <summary>
/// Create an animation.
/// </summary>
/// <param name="skeleton">The skeleton this animation belongs to.</param>
public Animation(Skeleton skeleton)
{
//Initialize stuff.
Initialize(skeleton);
}
/// <summary>
/// Initialize the animation.
/// <param name="skeleton">The skeleton this animation belongs to.</param>
/// </summary>
public void Initialize(Skeleton skeleton)
{
//Initialize a few variables.
_Skeleton = skeleton;
_Keyframes = new List<Keyframe>();
_FrameTime = .2f;
_NumberOfFrames = 20;
_CurrentFrameIndex = 0;
_NextFrameIndex = 0;
_IsActive = false;
_TotalElapsedTime = 0;
_Strength = 1;
//Create the first keyframe and reset it to the state of the skeleton.
AddKeyframe();
ResetKeyframe(0);
}
/// <summary>
/// Intialize the bone.
/// </summary>
/// <param name="skeleton">The skeleton this bone is a part of.</param>
/// <param name="name">The name of the bone.</param>
/// <param name="index">The index of the bone.</param>
/// <param name="parentIndex">The index of the parent bone.</param>
/// <param name="position">The absolute position of the bone.</param>
/// <param name="scale">The scale of the bone.</param>
/// <param name="rotation">The absolute rotation of the bone.</param>
/// <param name="length">The length of the bone.</param>
private void Initialize(Skeleton skeleton, string name, int index, int parentIndex, Vector2 position, Vector2 scale, float rotation, float length)
{
//Save the given index for future use, along with initializing a few things.
_Skeleton = skeleton;
_Name = name;
_Index = index;
_ParentIndex = parentIndex;
_RootBone = false;
_Scale = scale;
_AbsolutePosition = position;
_AbsoluteRotation = rotation;
_RelativePosition = Vector2.Zero;
_RelativeRotation = rotation;
_Length = length;
_RelativeDirection = 0;
//Check if the bone is the skeleton's root bone.
if (parentIndex == -1) { _RootBone = true; }
else
{
//Calculate the position relative to the bone's parent.
UpdateRelativePosition();
UpdateRelativeRotation();
UpdateRelativeDirection();
}
}
/// <summary>
/// Create a bone.
/// </summary>
/// <param name="skeleton">The skeleton this bone is a part of.</param>
/// <param name="name">The name of the bone.</param>
/// <param name="index">The index of the bone.</param>
/// <param name="parentIndex">The index of the parent bone.</param>
/// <param name="position">The absolute position of the bone.</param>
/// <param name="scale">The scale of the bone.</param>
/// <param name="rotation">The absolute rotation of the bone.</param>
/// <param name="length">The length of the bone.</param>
public Bone(Skeleton skeleton, string name, int index, int parentIndex, Vector2 position, Vector2 scale, float rotation, float length)
{
Initialize(skeleton, name, index, parentIndex, position, scale, rotation, length);
}
/// <summary>
/// Set this keyframe to the state of a skeleton.
/// </summary>
/// <param name="skeleton">The skeleton to mimick.</param>
public void SetBones(Skeleton skeleton)
{
//Clear the list of bones.
_BonesToBe.Clear();
//Add all bones in the skeleton to the keyframe.
foreach (Bone bone in skeleton.Bones) { AddBone(bone.DeepClone()); }
}