public static ExCoordF Polar(ExBPY r, ExBPY theta)
{
var vr = ExUtils.VFloat();
var lookup = new TExV2();
return((c, s, bpi, nrv, fxy) => Ex.Block(new[] { vr, lookup },
Ex.Assign(lookup, ExM.CosSinDeg(theta(bpi))),
Ex.Assign(vr, r(bpi)),
fxy(Ex.Subtract(Ex.Multiply(c, lookup.x), Ex.Multiply(s, lookup.y)).Mul(vr),
Ex.Add(Ex.Multiply(s, lookup.x), Ex.Multiply(c, lookup.y)).Mul(vr)),
Expression.Empty()
));
}
public static ExCoordF Polar2(ExTP radThetaDeg)
{
var rt = new TExV2();
var lookup = new TExV2();
return((c, s, bpi, nrv, fxy) => Ex.Block(new ParameterExpression[] { rt, lookup },
Ex.Assign(rt, radThetaDeg(bpi)),
Ex.Assign(lookup, ExM.CosSinDeg(rt.y)),
fxy(Ex.Subtract(Ex.Multiply(c, lookup.x), Ex.Multiply(s, lookup.y)).Mul(rt.x),
Ex.Add(Ex.Multiply(s, lookup.x), Ex.Multiply(c, lookup.y)).Mul(rt.x)),
Expression.Empty()
));
}
/// <summary> /// Return the direction, in degrees, of the bullet. /// </summary> /// <returns></returns> public static ExBPY Dir() => sb => ExM.ATan(sb.SB.direction);
/// <summary> /// Short for `* smooth / t TIME ss0 - LOCATION loc`. Use with NROFFSET. /// </summary> public static ExTP EaseToTarget([LookupMethod] Func <tfloat, tfloat> ease, ExBPY time, ExTP location) => bpi => ExM.Mul(ease(Div(bpi.t, time(bpi))), ExMSamplers.SS0(x => Sub(location(x), x.loc))(bpi));
/// <summary> /// See <see cref="ExM.PM"/>. /// </summary> /// <returns></returns> public static ExBPY PM(int self, int children) => bpi => ExM.PM(self, children, bpi.index);
/// <summary> /// See <see cref="ExM.P2M"/>. /// </summary> /// <returns></returns> public static ExBPY P2M(int mod) => bpi => ExM.P2M(mod, bpi.index);
/// <summary> /// See <see cref="ExM.P2"/>. /// </summary> /// <returns></returns> public static ExBPY P2() => bpi => ExM.P2(bpi.index);
/// <summary> /// See <see cref="ExM.P1"/>. /// </summary> /// <returns></returns> public static ExBPY P1() => bpi => ExM.P1(bpi.index);
/// <summary> /// Returns Atan(Player.Loc - this.Loc) in degrees. /// </summary> public static ExBPY AngleToPlayer() => AngleTo(x => ExM.LPlayer());