private void StabilizeTargetedObject()
{
TargetedObject.SetLinearVelocity(Vector2.Zero);
m_distanceJointObject = Game.CreateObject("InvisibleBlockSmall");
m_distanceJointObject.SetBodyType(BodyType.Dynamic);
m_distanceJoint = (IObjectDistanceJoint)Game.CreateObject("DistanceJoint");
m_distanceJoint.SetLineVisual(LineVisual.None);
m_distanceJoint.SetLengthType(DistanceJointLengthType.Fixed);
m_targetedObjectJoint = (IObjectTargetObjectJoint)Game.CreateObject("TargetObjectJoint");
var targetedObjPosition = TargetedObject.GetAABB().Center;
m_distanceJointObject.SetWorldPosition(targetedObjPosition);
TargetedObject.SetWorldPosition(targetedObjPosition);
m_pullJoint.SetWorldPosition(targetedObjPosition);
m_distanceJoint.SetWorldPosition(targetedObjPosition);
// if DistanceJoint and TargetObjectJoint is at the same position, weird things may happen
// uncomment the part below to stop it
m_targetedObjectJoint.SetWorldPosition(m_distanceJointObject.GetWorldPosition() /* - Vector2.UnitY*/);
m_pullJoint.SetTargetObject(m_distanceJointObject);
m_distanceJoint.SetTargetObject(m_distanceJointObject);
m_distanceJoint.SetTargetObjectJoint(m_targetedObjectJoint);
m_targetedObjectJoint.SetTargetObject(TargetedObject);
m_pullJoint.SetForce(15);
IsTargetedObjectStabilized = true;
}
public override void Update(float elapsed)
{
base.Update(elapsed);
if (Owner.IsManualAiming)
{
var holdPosition = GetHoldPosition(true);
m_invisibleMagnet.SetWorldPosition(holdPosition);
// m_invisibleMagnet is a static object so the corresponding TargetObjectJoint need to be moved manually too
m_magnetJoint.SetWorldPosition(holdPosition);
if (TargetedObject != null)
{
TryStabilizeTargetedObject(holdPosition);
}
if (Game.IsEditorTest)
{
var scanLine = GetScanLine();
Game.DrawLine(scanLine[0], scanLine[1]);
Game.DrawCircle(holdPosition, .5f, Color.Red);
//Game.DrawCircle(position, .5f, Color.Blue);
//Game.DrawLine(position, position + direction * 6, Color.Yellow);
//Game.DrawArea(m_pullJoint.GetAABB(), Color.Cyan);
//Game.DrawArea(m_magnetJoint.GetAABB(), Color.Magenta);
if (TargetedObject != null)
{
Game.DrawArea(TargetedObject.GetAABB(), Color.Blue);
}
//if (m_distanceJointObject != null)
// Game.DrawArea(m_distanceJointObject.GetAABB(), Color.Green);
var to = m_pullJoint.GetTargetObject();
if (to != null)
{
Game.DrawArea(to.GetAABB(), Color.Yellow);
}
}
}
else
{
if (IsTargetedObjectStabilized || TargetedObject != null)
{
StopStabilizingTargetedObject();
m_invisibleMagnet.SetWorldPosition(FarAwayPosition);
m_magnetJoint.SetWorldPosition(FarAwayPosition);
}
}
}
private void TryStabilizeTargetedObject(Vector2 holdPosition)
{
var results = RayCastTargetedObject(false);
var stabilizedZone = GetStabilizedZone(holdPosition);
Game.DrawArea(stabilizedZone, Color.Green);
var targetedObjectFound = false;
var targetHitbox = TargetedObject.GetAABB();
if (stabilizedZone.Intersects(targetHitbox))
{
targetedObjectFound = true;
}
foreach (var result in results)
{
if (result.HitObject == null)
{
continue;
}
if (result.HitObject.UniqueID == TargetedObject.UniqueID)
{
targetedObjectFound = true;
if (stabilizedZone.Intersects(targetHitbox))
{
if (!IsTargetedObjectStabilized)
{
StabilizeTargetedObject();
IsTargetedObjectStabilized = true;
}
}
break;
}
}
if (!targetedObjectFound)
{
StopStabilizingTargetedObject();
}
else
{
var player = ScriptHelper.CastPlayer(TargetedObject);
if (player != null && !player.IsStaggering)
{
// Not sure why StaggerInfinite is not infinite!
player.AddCommand(new PlayerCommand(PlayerCommandType.StaggerInfinite));
}
}
}
public Vector2 GetHoldPosition(bool useOffset)
{
var offset = 0f;
if (TargetedObject != null && useOffset)
{
var hitbox = TargetedObject.GetAABB();
var length = Math.Max(hitbox.Width, hitbox.Height);
offset = length / 2f;
}
Vector2 position, direction;
Owner.GetWeaponMuzzleInfo(out position, out direction);
return(position + direction * (6 + offset));
}
protected override void Update(float elapsed)
{
base.Update(elapsed);
if (TargetedObject == null)
{
CheckIfCollide();
}
if (TargetedObject != null)
{
Game.DrawArea(TargetedObject.GetAABB(), Color.Red);
}
if (TargetedPlayer != null)
{
if (TargetedPlayer.IsOnGround)
{
if (m_weldJoint != null)
{
Instance.SetBodyType(BodyType.Static);
m_weldJoint.Remove();
m_weldJoint = null;
}
if (TargetedPlayer.IsCrouching)
{
Instance.SetWorldPosition(TargetedPlayer.GetWorldPosition() - m_relPlayerPosition - Vector2.UnitY * 5);
}
else if (TargetedPlayer.IsRolling)
{
Instance.SetWorldPosition(TargetedPlayer.GetAABB().Center);
}
else
{
Instance.SetWorldPosition(TargetedPlayer.GetWorldPosition() - m_relPlayerPosition);
}
}
else if (TargetedPlayer.IsInMidAir) // cannot track position accurately when player is in mid air
{
if (m_weldJoint == null)
{
Instance.SetBodyType(BodyType.Dynamic);
m_weldJoint = (IObjectWeldJoint)Game.CreateObject("WeldJoint");
m_weldJoint.SetWorldPosition(Instance.GetWorldPosition());
m_weldJoint.SetTargetObjects(new List <IObject>()
{
Instance, TargetedPlayer
});
}
}
}
if (m_timeElasped != 0 && ScriptHelper.IsElapsed(m_timeElasped, 2000))
{
if (m_weldJoint != null)
{
m_weldJoint.Remove();
}
DealExplosionDamage();
Instance.Destroy();
}
}