/// <summary>
/// Updates the kill task logic. It navigates the holder to the target and waits for him to shoot the target. If the holder has not a usable gun, it leads him to search for a toolbox. It can also lead him to for a healbox if it is needed.
/// </summary>
/// <param name="gameTime">Game time</param>
public override void Update(GameTime gameTime)
{
if (Holder.SelectedTool is Gun && ((Gun)Holder.SelectedTool).Type.Range < TownQuarter.SquareWidth)
{
Box nearestToolBox = Holder.Position.Quarter.GetNearestBox(Holder.Position, true);
if (nearestToolBox != null)
{
Holder.AddUrgentTask(new MoveTask(Holder, nearestToolBox.Pivot));
}
}
int neededHealth = target.Health - (Holder.SelectedTool is Gun ? ((Gun)Holder.SelectedTool).Type.Damage : 0);
if (Holder.Health < neededHealth)
{
Box nearestHealBox = Holder.Position.Quarter.GetNearestBox(Holder.Position, false);
if (nearestHealBox != null)
{
Holder.AddUrgentTask(new MoveTask(Holder, nearestHealBox.Pivot));
}
}
if (gameTime.TotalGameTime - lastUpdatedWaypoints > RecomputeWaypointsTimeout && (lastTargetQuarter != target.Position.Quarter || target.Position.Quarter == Holder.Position.Quarter))
{
lastTargetQuarter = target.Position.Quarter;
goStraightToTarget = false;
if (Holder.Position.Quarter == target.Position.Quarter)
{
Vector2 wayVect = (target.Position.PositionInQuarter - Holder.Position.PositionInQuarter);
float direction = (wayVect.GetAngle() + 1 * MathHelper.PiOver2) % MathHelper.TwoPi;
Quadrangle viewLine = Quadrangle.CreateBand(Holder.Pivot.PositionInQuarter, direction, Holder.Size.X, wayVect.Length());
goStraightToTarget = !Grid.IsInCollision(viewLine, c => !(c is Human));
}
if (!goStraightToTarget)
{
RecomputeWaypoints(Holder.Position, target.Position);
}
lastUpdatedWaypoints = gameTime.TotalGameTime;
}
if (goStraightToTarget)
{
if (Holder.Position.MinimalDistanceTo(target.Position) > TownQuarter.SquareWidth)
{
Holder.GoThisWay(target.Position, (float)gameTime.ElapsedGameTime.TotalSeconds);
}
else
{
Holder.TurnThisWay(target.Position, (float)gameTime.ElapsedGameTime.TotalSeconds);
}
}
else
{
base.Update(gameTime);
}
}
