/// <summary>
/// This gives the tail upwards momentum when turning (when the player direction and the side the last tail segement are on dont match
/// </summary>
/// <param name="tailInstance"></param>
/// <param name="strength"></param>
public static void UpwardsTurn(this TailInstance tailInstance, float strength = 2)
{
float startLocation = tailInstance.tailBones.ropeSegments[0].ScreenPos.X;
int directionMult = startLocation > tailInstance.tailBones.ropeSegments[tailInstance.tailBones.segmentCount - 1].ScreenPos.X ? -1 : 1;
if (directionMult != tailInstance.facingDirection.X)
{
tailInstance.tailBones.ropeSegments[tailInstance.tailBones.segmentCount - 1].posNow.Y -= (strength * tailInstance.facingDirection.Y);
}
}
/// <summary>
/// Wobbles the tail when idle or running.
/// </summary>
/// <param name="tailInstance">passed instance to run this on</param>
/// <param name="startIndex">first index that is moved</param>
/// <param name="endIndex">last index that is moved</param>
/// <param name="freq">frequency of the cycles</param>
/// <param name="runningFreq">frequency of the cycles when running</param>
/// <param name="amplitude">ampiltude of the cycles</param>
/// <param name="runningAmplitude">amplitude of the cycles when running</param>
/// <param name="multX">multiplier for the X axis. For tails that rest vertically</param>
/// <param name="multY">multiplier for the Y axis. For tails that rest horizontally</param>
/// <param name="runThreshold">speed threshold for when the player is running</param>
public static void TailWobble(this TailInstance tailInstance, int startIndex, int endIndex, float freq = 0.05f, float runningFreq = 0.2f, float amplitude = 1f, float runningAmplitude = 1.2f, float multX = 1, float multY = 0, float runThreshold = 0.1f)
{
for (int i = startIndex; i < endIndex; i++)
{
float str = Math.Abs(tailInstance.tailBones.ropeSegments[0].posOld.X - tailInstance.tailBones.ropeSegments[0].posNow.X);
float sin = str > 0.1f ? (float)Math.Sin((float)Main.GameUpdateCount * runningFreq) * runningAmplitude :
(float)Math.Sin((float)Main.GameUpdateCount * freq) * amplitude;
tailInstance.tailBones.ropeSegments[i].posNow += new Vector2(-sin * multX, sin * multY);
}
}
/// <summary>
/// Wobbles the tail when idle or running. is run on the last segment in the tail. Use the other overload to run it on other segments.
/// </summary>
/// <param name="tailInstance">passed instance to run this on</param>
/// <param name="freq">frequency of the cycles</param>
/// <param name="runningFreq">frequency of the cycles when running</param>
/// <param name="amplitude">ampiltude of the cycles</param>
/// <param name="runningAmplitude">amplitude of the cycles when running</param>
/// <param name="multX">multiplier for the X axis. For tails that rest vertically</param>
/// <param name="multY">multiplier for the Y axis. For tails that rest horizontally</param>
public static void TailWobble(this TailInstance tailInstance, float freq = 0.05f, float runningFreq = 0.2f, float amplitude = 0.25f, float runningAmplitude = 0.6f, float multX = 1, float multY = 0)
{
int index = tailInstance.tailBones.segmentCount - 1;
tailInstance.TailWobble(index - 1, index, freq, runningFreq, amplitude, runningAmplitude, multX, multY);
}
