/// <summary>
/// Init: pixie herself (a default implementation is in Level)
/// </summary>
protected virtual void InitPixie()
{
pixie = new Pixie();
pixie.PositionAndTarget = PIXIE_STARTING_POS;
pixie.TargetSpeed = PIXIE_TARGETSPEED;
Add(pixie);
keyControl = new PixieKeyControl();
pixie.Add(keyControl);
}
protected override void OnUpdate(ref UpdateParams p)
{
base.OnUpdate(ref p);
// update BoundingRectangle values to latest and greatest
BoundingRectangle.X = TargetX;
BoundingRectangle.Y = TargetY;
// update position of the smooth motion of this Thing in the TTengine
// update position when attached to a parent Thing
if (Parent is Thing)
{
Thing t = Parent as Thing;
Target = t.Target + AttachmentPosition;
Motion.Position = Motion.ScaleAbs * FromPixels(AttachmentPosition);
}
else
{ // not attached to a parent Thing
Motion.Position = Screen.Center + Motion.ScaleAbs * (FromPixels(Position - ViewPos)); // TODO ViewPos smoothing using Draw cache?
//Motion.Position = Position - ViewPos; // alternative to above
}
// compute target move for this thing based on child controls
TargetMove = Vector2.Zero;
foreach (Gamelet g in Children)
{
if (g is ThingControl)
{
ThingControl control = g as ThingControl;
if (control.IsTargetMoveDefined)
{
TargetMove += control.TargetMove;
TargetMove *= control.TargetMoveMultiplier;
}
}
}
// compute new facingDirection from final TargetMove
if (TargetMove.LengthSquared() > 0f)
{
FacingDirection = TargetMove;
FacingDirection.Normalize();
// take steering inputs if any, and move Thing, applying collision detection
// if passable...
List <Thing> cols = DetectCollisions(TargetMove);
cols.RemoveAll(item => Children.Contains(item)); // do not heed my own attached-items in collision - they move along
if (IsCollisionFree || (!CollidesWithBackground(TargetMove) && cols.Count == 0))
{
bool ok = true;
if (!IsCollisionFree)
{
// check all attached Things too
foreach (Gamelet g in Children)
{
if (g is Thing && g.Visible)
{
Thing t = g as Thing;
if (t.IsCollisionFree)
{
continue;
}
// first, test if hits background
if (t.CollidesWithBackground(TargetMove))
{
ok = false;
break;
}
// if not, test if it hits others that are not attached to same parent and are not pixie
List <Thing> colsChild = t.DetectCollisions(TargetMove);
colsChild.RemoveAll(item => Children.Contains(item));
colsChild.Remove(Level.Current.pixie);
if (colsChild.Count > 0)
{
ok = false;
break;
}
}
}
}
// if there are no objections of main Thing (or its attachment) to the move, then move.
if (ok)
{
Target += TargetMove;
TTutil.Round(ref Target);
}
}
}
Vector2 vdif = Target - Position;
if (vdif.LengthSquared() > 0f) // if target not reached yet
{
if (false)
{
Position = Target; // debug
}
else
{
Vector2 vmove = vdif;
vmove.Normalize();
vmove *= TargetSpeed * Velocity;
// convert speed vector to move vector (x = v * t)
vmove *= p.Dt;
// check if target reached already (i.e. move would overshoot target)
if (vmove.LengthSquared() >= vdif.LengthSquared())
{
Position = Target;
}
else
{
// apply move towards target
Position += vmove;
}
}
}
}
protected override void OnUpdate(ref UpdateParams p)
{
base.OnUpdate(ref p);
// update position of the smooth motion of this Thing in the TTengine
// update position when attached to a parent Thing
if (Parent is Thing)
{
Thing t = Parent as Thing;
Target = t.Target + AttachmentPosition;
Motion.Position = Motion.ScaleAbs * FromPixels(AttachmentPosition);
}
else
{ // not attached to a parent Thing
Motion.Position = Screen.Center + Motion.ScaleAbs * (FromPixels(Position - ViewPos)); // TODO ViewPos smoothing using Draw cache?
//Motion.Position = Position - ViewPos; // alternative to above
}
// compute target move for this thing based on child ThingControl controls
TargetMove = Vector2.Zero;
foreach (Gamelet g in Children)
{
if (g is ThingControl)
{
ThingControl control = g as ThingControl;
if (control.IsTargetMoveDefined)
{
TargetMove += control.TargetMove;
TargetMove *= control.TargetMoveMultiplier;
}
}
}
// compute new facingDirection from final TargetMove
if (TargetMove.LengthSquared() > 0f)
{
FacingDirection = TargetMove;
FacingDirection.Normalize();
}
// take steering inputs if any, and move Thing, applying collision detection
if (TargetMove.LengthSquared() > 0f)
{
// check if passable...
List <Thing> cols = DetectCollisions(TargetMove);
if (!IsCollisionFree && Pushing != null && !IsCollisionFree && cols.Count > 0 && Pushing.Force > 0f)
{
// no - so try to push neighbouring things away
foreach (Thing t in cols)
{
if (t.Pushing != null)
{
t.Pushing.BePushed(TargetMove);
}
}
}
if (IsCollisionFree || (!CollidesWithBackground(TargetMove) && cols.Count == 0))
{
// yes - passable
bool ok = true;
if (!IsCollisionFree)
{
// check all attached Things too
foreach (Gamelet g in Children)
{
if (g is Thing)
{
Thing t = g as Thing;
if (t.IsCollisionFree)
{
continue;
}
// first, test if hits background
if (t.CollidesWithBackground(TargetMove))
{
ok = false;
break;
}
// if not, test if it hits others
List <Thing> colsChild = t.DetectCollisions(TargetMove);
if (colsChild.Count > 0)
{
ok = false;
break;
}
}
}
}
// if there are no objections of main Thing (or its attachment) to the move, then move.
if (ok)
{
Target += TargetMove;
TTutil.Round(ref Target);
}
}
}
Vector2 vdif = Target - Position;
if (vdif.LengthSquared() > 0f) // if target not reached yet
{
Vector2 vmove = vdif;
vmove.Normalize();
vmove *= TargetSpeed * Velocity;
// convert speed vector to move vector (x = v * t)
vmove *= p.Dt;
// check if target reached already (i.e. move would overshoot target)
if (vmove.LengthSquared() >= vdif.LengthSquared())
{
Position = Target;
}
else
{
// apply move towards target
Position += vmove;
}
}
}