public static BlockExpression RotateLerp(Ex target, Ex source, TExArgCtx bpi, bool isRate, bool isTrue, Ex rate)
{
if (isRate)
{
rate = rate.Mul(M.degRad);
}
if (isTrue)
{
rate = rate.Mul(ETime.FRAME_TIME);
}
TExV2 v = TExV2.Variable();
TEx <float> ang = ExUtils.VFloat();
Expression[] exprs = new Expression[3];
exprs[1] = ang.Is(RadDiff(target, v));
if (isTrue)
{
var key = bpi.Ctx.NameWithSuffix("_RotateLerpKey");
exprs[0] = v.Is(
Ex.Condition(FiringCtx.Contains <Vector2>(bpi, key),
FiringCtx.GetValue <Vector2>(bpi, key),
FiringCtx.SetValue <Vector2>(bpi, key, source)
));
exprs[2] =
FiringCtx.SetValue <Vector2>(bpi, key, RotateRad(isRate ? (Ex)Limit(rate, ang) : ang.Mul(rate), v));
}
else
{
exprs[0] = v.Is(source);
exprs[2] = RotateRad(isRate ?
(Ex)Limit(bpi.t.Mul(rate), ang) :
ang.Mul(Min(bpi.t.Mul(rate), E1)), v);
}
return(Ex.Block(new ParameterExpression[] { v, ang }, exprs));
}
public static BlockExpression LaserRotateLerp(Ex target, Ex source, TExArgCtx bpi, Ex rate)
{
var r1 = rate.Mul(ExC(ETime.FRAME_TIME));
TExV2 v = TExV2.Variable();
TEx <float> ang = ExUtils.VFloat();
var dirKey = bpi.Ctx.NameWithSuffix("_LaserRotateLerpDirKey");
var sideKey = bpi.Ctx.NameWithSuffix("_LaserRotateLerpSideKey");
var inter_ang = HighPass(ExC(0.01f), RadDiff(target, v));
return(Ex.Block(new ParameterExpression[] { v, ang },
Ex.Condition(
bpi.FCtxHas <Vector2>(dirKey).And(bpi.t.GT0()),
Ex.Block(
v.Is(bpi.FCtxGet <Vector2>(dirKey)),
ang.Is(Ex.Condition(bpi.FCtxGet <float>(sideKey).LT0(),
RadToNeg(inter_ang),
RadToPos(inter_ang)
)),
bpi.FCtxSet <Vector2>(dirKey, RotateRad(Limit(r1, ang), v))
),
Ex.Block(
v.Is(source),
ang.Is(RadDiff(target, v)),
bpi.FCtxSet <float>(sideKey, Sign(ang)),
bpi.FCtxSet <Vector2>(dirKey, RotateRad(Limit(r1, ang), v))
)
)
));
}
public static Func <T, TEx <R> > EaseD <T, R>(Func <tfloat, tfloat> easer, float maxTime,
Func <T, TEx <R> > fd, Func <T, Ex> t, Func <T, Ex, T> withT)
{
var ratTime = ExUtils.VFloat();
// x'(t) = f'(g(t)) g'(t). Where g(t) = T e(t/T): g'(t) = e'(t/T)
return(bpi => Ex.Block(new[] { ratTime },
Ex.Assign(ratTime, Clamp01(ExC(1f / maxTime).Mul(t(bpi)))),
Ex.Multiply(
DerivativeVisitor.Derivate(ratTime, E1, easer(ratTime)),
fd(withT(bpi, ExC(maxTime).Mul(easer(ratTime)))))
));
}