internal void ApplyForceEffect(LFloat deltaTime)
{
bool sliding = mLinearVelocity.sqrMagnitude > 0;
bool rotating = mAngularVelocity > 0;
// linear velocity
LVector2 va = mUserForce * mMassInverse;
if (!mIsFixed)
{
va += LPhysicsStatic2D.LGravity * mGravityScale;
}
if (sliding && mLinearDrag > 0)
{
LFloat da = mLinearDrag * mMassInverse;
LFloat minr = (mLinearVelocity / deltaTime).sqrMagnitude;
if (da * da >= minr)
{
va = LVector2.zero;
mLinearVelocity = LVector2.zero;
}
else
{
va -= da * mLinearVelocity.normalized;
}
}
if (va != LVector2.zero)
{
mLinearVelocity += va * deltaTime;
}
// angular velocity
LFloat ra = mUserTorque * mInertiaInverse;
if (rotating && mAngularDrag > 0)
{
LFloat da = mAngularDrag * mInertiaInverse;
LFloat minr = mAngularVelocity / deltaTime;
if (da >= minr)
{
ra = 0;
mAngularVelocity = 0;
}
else
{
ra -= da * LMath.Sign(ra);
}
}
if (ra != 0)
{
mAngularVelocity += ra * deltaTime;
}
}
public void DoInit()
{
parts.Sort((a, b) => LMath.Sign(a.startFrame - b.startFrame));
var time = LFloat.MinValue;
foreach (var part in parts)
{
var partDeadTime = part.DeadTimer;
if (partDeadTime > time)
{
time = partDeadTime;
}
}
maxPartTime = time + doneDelay;
}
void ResortSkill()
{
parts.Sort((a, b) => LMath.Sign(a.startTimer - b.startTimer));
var time = LFloat.MinValue;
foreach (var part in parts)
{
part.startTimer = part.startTimer * SkillPart.AnimFrameScale;
var partDeadTime = part.DeadTimer;
if (partDeadTime > time)
{
time = partDeadTime;
}
}
maxPartTime = time + doneDelay;
}
