public override ProgrammingElement Clone()
{
TurnModifier clone = new TurnModifier();
CopyTo(clone);
return(clone);
}
public override ActionSet ComposeActionSet(Reflex reflex, GameActor gameActor)
{
ClearActionSet(actionSet);
//UpdateCanBlend(reflex);
if (!reflex.targetSet.AnyAction)
{
return(actionSet);
}
TurnModifier turnMod = reflex.GetModifierByType(typeof(TurnModifier)) as TurnModifier;
GamePadStickFilter stickFilt = reflex.Data.GetFilterByType(typeof(GamePadStickFilter)) as GamePadStickFilter;
GamePadTriggerFilter triggerFilt = reflex.Data.GetFilterByType(typeof(GamePadTriggerFilter)) as GamePadTriggerFilter;
MouseFilter mouseFilt = reflex.Data.GetFilterByType(typeof(MouseFilter)) as MouseFilter;
TouchGestureFilter touchFilt = reflex.Data.GetFilterByType(typeof(TouchGestureFilter)) as TouchGestureFilter;
KeyBoardKeyFilter keyBoardKeyFilt = reflex.Data.GetFilterByType(typeof(KeyBoardKeyFilter)) as KeyBoardKeyFilter;
// Will be modified depending on stick or trigger position.
float speedModifier = 1.0f;
//
// Start by looking at the input filters to attenuate speed.
//
if (stickFilt != null)
{
// Note that we take the sign into account further below.
// For now, just get the magnitude.
speedModifier *= (float)Math.Abs(stickFilt.stickPosition.X);
}
else if (triggerFilt != null)
{
speedModifier *= triggerFilt.triggerValue;
}
else if (mouseFilt != null)
{
// Note that we take the sign into account further below.
// For now, just get the magnitude.
speedModifier *= Math.Abs(mouseFilt.ScreenPosition.X);
}
else if (touchFilt != null)
{
if (touchFilt.type == TouchGestureFilterType.Rotate)
{
reflex.Task.GameActor.Chassis.WasTouchRotated = true;
}
}
// Decide if we're turning toward a particular direction or
// setting a turn rate. Note, this will miss some cases
// that we clean up further down. The failure is rooted
// in TurnModifier if you want to go fix it. :-)
Vector3 desiredHeading = Vector3.Zero;
float targetHeading = 0;
// See if the modifiers want to give us an absolute direction.
reflex.ModifyHeading(gameActor, Modifier.ReferenceFrames.World, ref desiredHeading);
targetHeading = MyMath.ZRotationFromDirection(desiredHeading);
// If we have a desiredHeading, use that, else assume we're just turning.
if (desiredHeading != Vector3.Zero)
{
// We were given an absolute direction, use it.
actionSet.AddActionTarget(Action.AllocHeadingAction(reflex, targetHeading, speedModifier));
}
else
{
// Determine which relative direction we should use.
TurnModifier.TurnDirections direction = TurnModifier.TurnDirections.None;
if (turnMod != null)
{
// If a turn modifier was specified, use its direction.
direction = turnMod.direction;
}
else if (stickFilt != null)
{
// No turn modifier but we have a gamepad stick, use it to determine turn direction.
direction = stickFilt.stickPosition.X > 0 ? TurnModifier.TurnDirections.Right : TurnModifier.TurnDirections.Left;
}
else if (triggerFilt != null)
{
// No turn modifier but we have a gamepad trigger, use it to determine turn direction.
// Basically this automatically maps left trigger to left turn and right trigger to right turn.
direction = triggerFilt.trigger == GamePadTriggerFilter.GamePadTrigger.LeftTrigger ? TurnModifier.TurnDirections.Left : TurnModifier.TurnDirections.Right;
}
else if (mouseFilt != null)
{
// No turn modifier but we do have mouse input.
direction = mouseFilt.ScreenPosition.X > 0 ? TurnModifier.TurnDirections.Right : TurnModifier.TurnDirections.Left;
// This scaling by 2 has no real justification except
// that it matches the magnitude of the original code
// so this is more compatible with older games.
speedModifier *= 2.0f;
}
else if (touchFilt != null)
{
// No turn modifier but we do have touch input.
if (touchFilt.type == TouchGestureFilterType.Rotate)
{
if (touchFilt.DeltaRotation < 0)
{
direction = TurnModifier.TurnDirections.Left;
}
else if (touchFilt.DeltaRotation > 0)
{
direction = TurnModifier.TurnDirections.Right;
}
}
else if (touchFilt.type == TouchGestureFilterType.Tap)
{
direction = TurnModifier.TurnDirections.Toward;
}
}
else if (keyBoardKeyFilt != null)
{
if (reflex.targetSet != null)
{
Vector2 dir = (Vector2)(reflex.targetSet.Param);
if (dir.X == 1)
{
direction = TurnModifier.TurnDirections.Right;
}
else if (dir.X == -1)
{
direction = TurnModifier.TurnDirections.Left;
}
}
}
else
{
// Nothing exists that would help us decide which way we should turn, choose left.
// This could be the user programming WHEN DO Turn
direction = TurnModifier.TurnDirections.Left;
}
// Calculate the new direction we want to face.
switch (direction)
{
// Turn to our left.
case TurnModifier.TurnDirections.Left:
{
float angle = 0.0f;
if (touchFilt != null && touchFilt.type == TouchGestureFilterType.Rotate)
{
angle = gameActor.Movement.RotationZ + Math.Abs(touchFilt.DeltaRotation);
}
else
{
angle = gameActor.Movement.RotationZ + MathHelper.PiOver2;
}
desiredHeading = new Vector3((float)Math.Cos(angle), (float)Math.Sin(angle), 0);
actionSet.AddActionTarget(Action.AllocTurnSpeedAction(reflex, speedModifier), 0);
}
break;
// Turn to our right.
case TurnModifier.TurnDirections.Right:
{
float angle = 0.0f;
if (touchFilt != null && touchFilt.type == TouchGestureFilterType.Rotate)
{
angle = gameActor.Movement.RotationZ - Math.Abs(touchFilt.DeltaRotation);
}
else
{
angle = gameActor.Movement.RotationZ - MathHelper.PiOver2;
}
desiredHeading = new Vector3((float)Math.Cos(angle), (float)Math.Sin(angle), 0);
actionSet.AddActionTarget(Action.AllocTurnSpeedAction(reflex, -speedModifier), 0);
}
break;
// Turn to face the direction we are moving.
case TurnModifier.TurnDirections.Forward:
{
float angle = MyMath.ZRotationFromDirection(gameActor.Movement.Velocity);
desiredHeading = new Vector3((float)Math.Cos(angle), (float)Math.Sin(angle), 0);
actionSet.AddActionTarget(Action.AllocHeadingAction(reflex, targetHeading, speedModifier));
}
break;
// Turn to face the sensed object.
case TurnModifier.TurnDirections.Toward:
// We're probably here because of WHEN Mouse Left DO Turn Toward.
// This is another case where we want a Heading Action.
if (reflex.targetSet.Nearest != null)
{
speedModifier = 1;
// If we're doing mouse-look (WHEN Mouse Over DO Turn Toward) try
// and create a bit of a dead-zone in the middle.
bool mouseOver = false;
foreach (Filter f in reflex.Filters)
{
MouseFilter mf = f as MouseFilter;
if (mf != null && mf.type == MouseFilterType.Hover)
{
mouseOver = true;
break;
}
}
desiredHeading = reflex.targetSet.Nearest.Direction;
targetHeading = MyMath.ZRotationFromDirection(desiredHeading);
// If mouseOver, calc damping to slow down turning when already looking
// in the direction we want. This helps make it less twitchy.
float dampingFactor = 1.0f;
if (mouseOver)
{
float dot = Vector3.Dot(desiredHeading, gameActor.Movement.Heading);
float deadzoneAngle = 0.96f;
float dampzoneAngle = 0.9f;
// If very close to center, just treat as zero.
if (dot > deadzoneAngle)
{
dampingFactor = 0;
}
else if (dot > dampzoneAngle)
{
// Not in center, but close so damp turning.
// The closer we are to already looking in the correct direction, increase damping.
dampingFactor = MyMath.RemapRange(dot, deadzoneAngle, dampzoneAngle, 0, 1);
// Smooth the result to flatten out the center.
dampingFactor = MyMath.SmoothStep(0, 1, dampingFactor);
}
}
actionSet.AddActionTarget(Action.AllocHeadingAction(reflex, targetHeading, dampingFactor * speedModifier));
}
break;
}
}
return(actionSet);
} // end of ComposeActionSet()
protected void CopyTo(TurnModifier clone)
{
base.CopyTo(clone);
clone.direction = this.direction;
}