// 11Mar2013-04:41UTC chinajade
private double CalculateMuzzleVelocity()
{
double launchAngle = WeaponArticulation.AzimuthGet();
double muzzleVelocity = 0.0;
var spell = FindVehicleAbilitySpell();
if ((spell != null) && (spell.InternalInfo.SpellMissile != null))
{
IEnumerable <WoWMissile> firedMissileQuery =
from missile in WoWMissile.InFlightMissiles
where
(missile.CasterGuid == Me.TransportGuid) &&
(missile.SpellId == spell.Id)
select missile;
WoWMissile launchedMissile = firedMissileQuery.FirstOrDefault();
/* N.B This has been commented out to fix momentary game 'freeze up' from framelock but has been left here for -
* future reference in the event this logic needs to be further repaired.
*
* // Launch missile, and wait until launch is observed;
* MissileWatchingTimer.Reset();
*
* while ((launchedMissile == null) && !MissileWatchingTimer.IsFinished)
* {
* // WoWMissiles are read directly from the games memory and are not stored in the 'ObjectManager'
* // ObjectManager.Update();
* launchedMissile = firedMissileQuery.FirstOrDefault();
* }
*/
// If we failed to see the missile, report error and move on...
if (launchedMissile == null)
{
QBCLog.Warning(
"Muzzle Velocity not calculated--"
+ "Unable to locate projectile launched by Vehicle Ability button #{0}",
AbilityIndex);
return(double.NaN); // "we don't know"
}
// Initial velocity calculation...
// * Accounts for uneven terrain
//
// v0 = sqrt((R^2 * g) / (R * sin(2*theta) + 2 * h * cos^2(theta)))
// where, R = range, g = grav const, h = drop height, theta = launch angle
double R = launchedMissile.FirePosition.Distance2D(launchedMissile.ImpactPosition);
double h = launchedMissile.FirePosition.Z - launchedMissile.ImpactPosition.Z;
double sinTwoTheta = Math.Sin(2 * launchAngle);
double cosTheta = Math.Cos(launchAngle);
muzzleVelocity = Math.Sqrt(((R * R) * GravityInFpsSqr) / (R * sinTwoTheta + 2 * h * (cosTheta * cosTheta)));
}
return(muzzleVelocity);
}
// 9Mar2013-07:55UTC chinajade
public static string ToString_FullInfo(this WoWMissile wowMissile, bool useCompactForm = false, int indentLevel = 0)
{
var tmp = new StringBuilder();
if (wowMissile != null)
{
var indent = string.Empty.PadLeft(indentLevel);
var fieldSeparator = useCompactForm ? " " : string.Format("\n {0}", indent);
bool isInFlight = WoWMissile.InFlightMissiles.FirstOrDefault(m => m.BaseAddress == wowMissile.BaseAddress) != null;
tmp.AppendFormat("<WoWMissile Key_Spell=\"{0}\" BaseAddress=\"0x{1:x}\"",
((wowMissile.Spell == null) ? "UNKNOWN" : wowMissile.Spell.Name),
(wowMissile.BaseAddress));
tmp.AppendFormat("{0}Caster=\"{1}\"", fieldSeparator,
(wowMissile.Caster == null) ? "UNKNOWN" : wowMissile.Caster.SafeName);
tmp.AppendFormat("{0}CasterGuid=\"0x{1:x}\" <!--Me=\"0x{2:x}\" MyVehicle=\"0x{3:x}\" -->",
fieldSeparator, wowMissile.Caster.Guid, StyxWoW.Me.Guid, StyxWoW.Me.TransportGuid);
tmp.AppendFormat("{0}FirePosition=\"{1}\"", fieldSeparator, wowMissile.FirePosition);
tmp.AppendFormat("{0}Flags=\"0x{1:x}\"", fieldSeparator, wowMissile.Flags);
tmp.AppendFormat("{0}ImpactPosition=\"{1}\" <!--dist: {2:F1}-->", fieldSeparator, wowMissile.ImpactPosition,
wowMissile.ImpactPosition.Distance(StyxWoW.Me.Location));
tmp.AppendFormat("{0}IsInFlight=\"{1}\"", fieldSeparator, isInFlight);
tmp.AppendFormat("{0}Position=\"{1}\" <!--dist: {2:F1}-->", fieldSeparator, wowMissile.Position,
wowMissile.Position.Distance(StyxWoW.Me.Location));
tmp.AppendFormat("{0}Spell=\"{1}\"", fieldSeparator,
(wowMissile.Spell == null) ? "NONE" : wowMissile.Spell.Name);
tmp.AppendFormat("{0}SpellId=\"{1}\"", fieldSeparator, wowMissile.SpellId);
tmp.AppendFormat("{0}SpellVisualId=\"{1}\"", fieldSeparator, wowMissile.SpellVisualId);
tmp.AppendFormat("{0}Target=\"{1}\"", fieldSeparator,
(wowMissile.Target == null) ? "NONE" : wowMissile.Target.SafeName);
tmp.AppendFormat("{0}TargetGuid=\"0x{1:x}\"", fieldSeparator, wowMissile.TargetGuid);
tmp.AppendFormat("{0}/>", fieldSeparator);
}
return(tmp.ToString());
}
