protected virtual Vector2 DoSteeringAvoid(float deltaTime, float lookAheadDistance, float weight, Vector2?heading = null)
{
if (steering == Vector2.Zero || host.Steering == Vector2.Zero)
{
return(Vector2.Zero);
}
float maxDistance = lookAheadDistance;
if (Timing.TotalTime >= lastRayCastTime + RayCastInterval)
{
avoidRayCastHit = false;
AvoidLookAheadPos = host.SimPosition + Vector2.Normalize(host.Steering) * maxDistance;
lastRayCastTime = (float)Timing.TotalTime;
Body closestBody = Submarine.CheckVisibility(host.SimPosition, AvoidLookAheadPos);
if (closestBody != null)
{
avoidRayCastHit = true;
AvoidRayCastHitPosition = Submarine.LastPickedPosition;
AvoidDir = Submarine.LastPickedNormal;
//add a bit of randomness
AvoidDir = MathUtils.RotatePoint(AvoidDir, Rand.Range(-0.15f, 0.15f));
//wait a bit longer for the next raycast
lastRayCastTime += RayCastInterval;
}
}
if (AvoidDir.LengthSquared() < 0.0001f)
{
return(Vector2.Zero);
}
//if raycast hit nothing, lerp avoid dir to zero
if (!avoidRayCastHit)
{
AvoidDir -= Vector2.Normalize(AvoidDir) * deltaTime * 0.5f;
}
Vector2 diff = AvoidRayCastHitPosition - host.SimPosition;
float dist = diff.Length();
//> 0 when heading in the same direction as the obstacle, < 0 when away from it
float dot = MathHelper.Clamp(Vector2.Dot(diff / dist, host.Steering), 0.0f, 1.0f);
if (dot < 0)
{
return(Vector2.Zero);
}
return(AvoidDir * dot * weight * MathHelper.Clamp(1.0f - dist / lookAheadDistance, 0.0f, 1.0f));
}
private void BakeItemComponents(
ItemPrefab prefab,
Rectangle rect, Color color,
float scale, float rotation, float depth,
out bool overrideSprite)
{
overrideSprite = false;
foreach (var subElement in prefab.ConfigElement.Elements())
{
switch (subElement.Name.LocalName.ToLowerInvariant())
{
case "turret":
Sprite barrelSprite = null;
Sprite railSprite = null;
foreach (XElement turretSubElem in subElement.Elements())
{
switch (turretSubElem.Name.ToString().ToLowerInvariant())
{
case "barrelsprite":
barrelSprite = new Sprite(turretSubElem);
break;
case "railsprite":
railSprite = new Sprite(turretSubElem);
break;
}
}
Vector2 barrelPos = subElement.GetAttributeVector2("barrelpos", Vector2.Zero);
Vector2 relativeBarrelPos = barrelPos * prefab.Scale - new Vector2(rect.Width / 2, rect.Height / 2);
var transformedBarrelPos = MathUtils.RotatePoint(
relativeBarrelPos,
MathHelper.ToRadians(rotation));
float relativeScale = scale / prefab.Scale;
Vector2 drawPos = new Vector2(rect.X + rect.Width * relativeScale / 2 + transformedBarrelPos.X * relativeScale, rect.Y - rect.Height * relativeScale / 2 - transformedBarrelPos.Y * relativeScale);
drawPos.Y = -drawPos.Y;
railSprite?.Draw(spriteRecorder,
drawPos,
color,
rotation + MathHelper.PiOver2, scale,
SpriteEffects.None, depth + (railSprite.Depth - prefab.sprite.Depth));
barrelSprite?.Draw(spriteRecorder,
drawPos,
color,
rotation + MathHelper.PiOver2, scale,
SpriteEffects.None, depth + (barrelSprite.Depth - prefab.sprite.Depth));
break;
case "door":
doors.Add(new Door(rect));
var doorSpriteElem = subElement.Elements().FirstOrDefault(e => e.Name.LocalName.Equals("sprite", StringComparison.OrdinalIgnoreCase));
if (doorSpriteElem != null)
{
string texturePath = doorSpriteElem.GetAttributeString("texture", "");
Vector2 pos = rect.Location.ToVector2() * new Vector2(1f, -1f);
if (subElement.GetAttributeBool("horizontal", false))
{
pos.Y += (float)rect.Height * 0.5f;
}
else
{
pos.X += (float)rect.Width * 0.5f;
}
Sprite doorSprite = new Sprite(doorSpriteElem, texturePath.Contains("/") ? "" : Path.GetDirectoryName(prefab.FilePath));
spriteRecorder.Draw(doorSprite.Texture, pos,
new Rectangle((int)doorSprite.SourceRect.X,
(int)doorSprite.SourceRect.Y,
(int)doorSprite.size.X, (int)doorSprite.size.Y),
color, 0.0f, doorSprite.Origin, new Vector2(scale), SpriteEffects.None, doorSprite.Depth);
}
break;
case "ladder":
var backgroundSprElem = subElement.Elements().FirstOrDefault(e => e.Name.LocalName.Equals("backgroundsprite", StringComparison.OrdinalIgnoreCase));
if (backgroundSprElem != null)
{
Sprite backgroundSprite = new Sprite(backgroundSprElem);
backgroundSprite.DrawTiled(spriteRecorder,
new Vector2(rect.Left, -rect.Top) - backgroundSprite.Origin * scale,
new Vector2(backgroundSprite.size.X * scale, rect.Height), color: color,
textureScale: Vector2.One * scale,
depth: depth + 0.1f);
}
break;
}
}
}
