/// <summary>
/// Shifts the original target position in accordance with target leading, range estimation and weather/lighting effects
/// </summary>
protected virtual void ShiftTarget(ShiftVecReport report, bool calculateMechanicalOnly = false)
{
if (!calculateMechanicalOnly)
{
Vector3 u = caster.TrueCenter();
sourceLoc.Set(u.x, u.z);
if (numShotsFired == 0)
{
// On first shot of burst do a range estimate
estimatedTargDist = report.GetRandDist();
}
Vector3 v = report.target.Thing?.TrueCenter() ?? report.target.Cell.ToVector3Shifted(); //report.targetPawn != null ? report.targetPawn.DrawPos + report.targetPawn.Drawer.leaner.LeanOffset * 0.5f : report.target.Cell.ToVector3Shifted();
if (report.targetPawn != null)
{
v += report.targetPawn.Drawer.leaner.LeanOffset * 0.5f;
}
newTargetLoc.Set(v.x, v.z);
// ----------------------------------- STEP 1: Actual location + Shift for visibility
//FIXME : GetRandCircularVec may be causing recoil to be unnoticeable - each next shot in the burst has a new random circular vector around the target.
newTargetLoc += report.GetRandCircularVec();
// ----------------------------------- STEP 2: Estimated shot to hit location
newTargetLoc = sourceLoc + (newTargetLoc - sourceLoc).normalized * estimatedTargDist;
// Lead a moving target
newTargetLoc += report.GetRandLeadVec();
// ----------------------------------- STEP 3: Recoil, Skewing, Skill checks, Cover calculations
rotationDegrees = 0f;
angleRadians = 0f;
GetSwayVec(ref rotationDegrees, ref angleRadians);
GetRecoilVec(ref rotationDegrees, ref angleRadians);
// Height difference calculations for ShotAngle
float targetHeight = 0f;
var coverRange = new CollisionVertical(report.cover).HeightRange; //Get " " cover, assume it is the edifice
// Projectiles with flyOverhead target the surface in front of the target
if (Projectile.projectile.flyOverhead)
{
targetHeight = coverRange.max;
}
else
{
var victimVert = new CollisionVertical(currentTarget.Thing);
var targetRange = victimVert.HeightRange; //Get lower and upper heights of the target
/*if (currentTarget.Thing is Building && CompFireModes?.CurrentAimMode == AimMode.SuppressFire)
* {
* targetRange.min = targetRange.max;
* targetRange.max = targetRange.min + 1f;
* }*/
if (targetRange.min < coverRange.max) //Some part of the target is hidden behind some cover
{
// - It is possible for targetRange.max < coverRange.max, technically, in which case the shooter will never hit until the cover is gone.
// - This should be checked for in LoS -NIA
targetRange.min = coverRange.max;
// Target fully hidden, shift aim upwards if we're doing suppressive fire
if (targetRange.max <= coverRange.max && CompFireModes?.CurrentAimMode == AimMode.SuppressFire)
{
targetRange.max = coverRange.max * 2;
}
}
else if (currentTarget.Thing is Pawn)
{
// Aim for center of mass on an exposed target
targetRange.min = victimVert.BottomHeight;
targetRange.max = victimVert.MiddleHeight;
}
targetHeight = VerbPropsCE.ignorePartialLoSBlocker ? 0 : targetRange.Average;
}
angleRadians += ProjectileCE.GetShotAngle(ShotSpeed, (newTargetLoc - sourceLoc).magnitude, targetHeight - ShotHeight, Projectile.projectile.flyOverhead, projectilePropsCE.Gravity);
}
// ----------------------------------- STEP 4: Mechanical variation
// Get shotvariation, in angle Vector2 RADIANS.
Vector2 spreadVec = report.GetRandSpreadVec();
// ----------------------------------- STEP 5: Finalization
var w = (newTargetLoc - sourceLoc);
shotRotation = (-90 + Mathf.Rad2Deg * Mathf.Atan2(w.y, w.x) + rotationDegrees + spreadVec.x) % 360;
shotAngle = angleRadians + spreadVec.y * Mathf.Deg2Rad;
}
/// <summary>
/// Shifts the original target position in accordance with target leading, range estimation and weather/lighting effects
/// </summary>
protected virtual Vector3 ShiftTarget(ShiftVecReport report)
{
// ----------------------------------- STEP 0: Actual location
Vector3 targetLoc = report.targetPawn != null?Vector3.Scale(report.targetPawn.DrawPos, new Vector3(1, 0, 1)) : report.target.Cell.ToVector3Shifted();
Vector3 sourceLoc = this.CasterPawn != null?Vector3.Scale(this.CasterPawn.DrawPos, new Vector3(1, 0, 1)) : this.caster.Position.ToVector3Shifted();
// ----------------------------------- STEP 1: Shift for visibility
Vector2 circularShiftVec = report.GetRandCircularVec();
Vector3 newTargetLoc = targetLoc;
newTargetLoc.x += circularShiftVec.x;
newTargetLoc.z += circularShiftVec.y;
// ----------------------------------- STEP 2: Estimated shot to hit location
// On first shot of burst do a range estimate
if (this.estimatedTargDist < 0)
{
this.estimatedTargDist = report.GetRandDist();
}
newTargetLoc = sourceLoc + (newTargetLoc - sourceLoc).normalized * this.estimatedTargDist;
// Lead a moving target
newTargetLoc += report.GetRandLeadVec();
// ----------------------------------- STEP 3: Recoil, Skewing, Skill checks, Cover calculations
Vector2 skewVec = new Vector2(0, 0);
skewVec += this.GetSwayVec();
skewVec += this.GetRecoilVec();
// Height difference calculations for ShotAngle
float heightDifference = 0;
float targetableHeight = 0;
// Projectiles with flyOverhead target the ground below the target and ignore cover
if (!projectileDef.projectile.flyOverhead)
{
targetableHeight = CE_Utility.GetCollisionHeight(this.currentTarget.Thing);
if (report.cover != null)
{
targetableHeight += CE_Utility.GetCollisionHeight(report.cover);
}
heightDifference += targetableHeight * 0.5f; //Optimal hit level is halfway
}
this.shotHeight = CE_Utility.GetCollisionHeight(this.caster);
if (this.CasterPawn != null)
{
this.shotHeight *= shotHeightFactor;
}
heightDifference -= this.shotHeight;
skewVec += new Vector2(0, GetShotAngle(this.shotSpeed, (newTargetLoc - sourceLoc).magnitude, heightDifference) * (180 / (float)Math.PI));
// ----------------------------------- STEP 4: Mechanical variation
// Get shotvariation
Vector2 spreadVec = report.GetRandSpreadVec();
skewVec += spreadVec;
// Skewing - Applied after the leading calculations to not screw them up
float distanceTraveled = GetDistanceTraveled(this.shotSpeed, (float)(skewVec.y * (Math.PI / 180)), this.shotHeight);
newTargetLoc = sourceLoc + ((newTargetLoc - sourceLoc).normalized * distanceTraveled);
newTargetLoc = sourceLoc + (Quaternion.AngleAxis(skewVec.x, Vector3.up) * (newTargetLoc - sourceLoc));
this.shotAngle = (float)(skewVec.y * (Math.PI / 180));
return(newTargetLoc);
}