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public GetRelative ( |
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/// <summary>
/// Gets creatures within a rectangle of specified radian rotation,
/// length, and width. Outs the position of the opposite end of the
/// rectangle.
/// </summary>
/// <param name="startPosition"></param>
/// <param name="radianRotation"></param>
/// <param name="rectLength"></param>
/// <param name="rectWidth"></param>
/// <param name="endPosition"></param>
/// <returns></returns>
public List <Creature> GetCreaturesInRectangle(Position startPosition, double radianRotation, int rectLength, int rectWidth, out Position endPosition)
{
int radius = rectWidth / 2;
// Position at the opposite end of the rectangle from the startPosition
endPosition = startPosition.GetRelative(radianRotation, rectLength);
var startPoint = new Point(startPosition.X, startPosition.Y);
var endPoint = new Point(endPosition.X, endPosition.Y);
// Calculate the diagonal distance from the starting point to each of the rectangle's points on the opposite side
var pointDist = Math.Sqrt((rectLength * rectLength) + (radius * radius));
// Rotation angle used to place the points of [pointDist] distance away in the correct position to form a rectangle
// One negative and one positive rotation of a point [pointDist] distance away will provide two points of the rectangle
var rotationAngle = Math.Asin(radius / pointDist);
// Create a point [pointDist] away from the starting point, and rotate it both positively and negatively by [rotationAngle]
// to generate two points on one side of the rectangle
var posTemp1 = startPosition.GetRelative(endPosition, (int)(pointDist - rectLength));
var pointTemp1 = new Point(posTemp1.X, posTemp1.Y);
var p1 = this.RotatePoint(pointTemp1, startPoint, rotationAngle);
var p2 = this.RotatePoint(pointTemp1, startPoint, (rotationAngle * -1));
// Same method as points 1 and 2, starting from the end point instead to create two points on the opposite side
var posTemp2 = endPosition.GetRelative(startPosition, (int)(pointDist - rectLength));
var pointTemp2 = new Point(posTemp2.X, posTemp2.Y);
var p3 = this.RotatePoint(pointTemp2, endPoint, rotationAngle);
var p4 = this.RotatePoint(pointTemp2, endPoint, (rotationAngle * -1));
// Get creatures within the four points calculated
var creatureList = this.GetCreaturesInPolygon(p1, p2, p3, p4);
return(creatureList);
}
/// <summary>
/// Handles skill usage.
/// </summary>
/// <param name="attacker"></param>
/// <param name="skill"></param>
/// <param name="packet"></param>
public void Use(Creature attacker, Skill skill, Packet packet)
{
var targetAreaEntityId = packet.GetLong();
Send.Effect(attacker, 5, (byte)1, targetAreaEntityId);
var cap = new CombatActionPack(attacker, skill.Info.Id);
var aAction = new AttackerAction(CombatActionType.Attacker, attacker, skill.Info.Id, targetAreaEntityId);
aAction.Options |= AttackerOptions.Result;
aAction.Stun = UseStun;
cap.Add(aAction);
var attackerPosition = attacker.GetPosition();
// Calculate rectangular target area
var targetAreaPos = new Position(targetAreaEntityId);
var poe = targetAreaPos.GetRelative(attackerPosition, -800);
var r = (Math.PI / 2) + Math.Atan2(attackerPosition.Y - targetAreaPos.Y, attackerPosition.X - targetAreaPos.X);
var pivot = new Point(poe.X, poe.Y);
var p1 = new Point(pivot.X - LaserRectWidth / 2, pivot.Y - LaserRectHeight / 2);
var p2 = new Point(pivot.X - LaserRectWidth / 2, pivot.Y + LaserRectHeight / 2);
var p3 = new Point(pivot.X + LaserRectWidth / 2, pivot.Y + LaserRectHeight / 2);
var p4 = new Point(pivot.X + LaserRectWidth / 2, pivot.Y - LaserRectHeight / 2);
p1 = this.RotatePoint(p1, pivot, r);
p2 = this.RotatePoint(p2, pivot, r);
p3 = this.RotatePoint(p3, pivot, r);
p4 = this.RotatePoint(p4, pivot, r);
// Attack targets
var targets = attacker.Region.GetCreaturesInPolygon(p1, p2, p3, p4);
foreach (var target in targets.Where(cr => !cr.IsDead && !cr.Has(CreatureStates.NamedNpc)))
{
var targetPosition = target.GetPosition();
var tAction = new TargetAction(CombatActionType.TakeHit, target, attacker, skill.Info.Id);
tAction.Options = TargetOptions.Result | TargetOptions.KnockDown;
tAction.Stun = TargetStun;
tAction.Delay = 1200;
cap.Add(tAction);
// Var2: 300/1000, based on rank. Could be damage?
var damage = skill.RankData.Var2;
// Increase damage
CriticalHit.Handle(attacker, attacker.GetTotalCritChance(target.Protection), ref damage, tAction);
// Reduce damage
SkillHelper.HandleDefenseProtection(target, ref damage);
ManaShield.Handle(target, ref damage, tAction);
// Apply damage
target.TakeDamage(tAction.Damage = 300, attacker);
target.Stability = Creature.MinStability;
// Aggro
target.Aggro(attacker);
// Check death
if (target.IsDead)
tAction.Options |= TargetOptions.FinishingKnockDown;
// Knock back
attacker.Shove(target, KnockbackDistance);
}
cap.Handle();
Send.SkillUse(attacker, skill.Info.Id, 0);
}
public void GetRelative()
{
var pos1 = new Position(100, 100);
var pos2 = new Position(100, 200);
Assert.Equal(new Position(100, 250), pos1.GetRelative(pos2, 50));
Assert.Equal(new Position(100, 150), pos1.GetRelative(pos2, -50));
Assert.Equal(new Position(100, -50), pos1.GetRelative(pos2, -250));
var pos3 = new Position(50, 100);
Assert.Equal(new Position(0, 100), pos1.GetRelative(pos3, 50));
Assert.Equal(new Position(100, 100), pos1.GetRelative(pos3, -50));
Assert.Equal(new Position(300, 100), pos1.GetRelative(pos3, -250));
var up = MabiMath.DegreeToRadian(90);
var down = MabiMath.DegreeToRadian(270);
var left = MabiMath.DegreeToRadian(180);
var right = MabiMath.DegreeToRadian(0);
Assert.Equal(new Position(100, 200), pos1.GetRelative(up, 100));
Assert.Equal(new Position(100, 0), pos1.GetRelative(down, 100));
Assert.Equal(new Position(0, 100), pos1.GetRelative(left, 100));
Assert.Equal(new Position(200, 100), pos1.GetRelative(right, 100));
}