public PlayerMovementEffectPlayer(UxContext uxContext, RogueskivGame game)
: base(uxContext, audioFilename: "player_movement")
{
Game = game;
PlayerMovementComp = game.Entities.GetSingleComponent <PlayerComp, BoundedMovementComp>();
PlayerPositionComp = game.Entities.GetSingleComponent <PlayerComp, CurrentPositionComp>();
PlayerLastPositionComp = game.Entities.GetSingleComponent <PlayerComp, LastPositionComp>();
}
private void SimpleBounce(MovementComp movementComp, CurrentPositionComp currentPositionComp)
{
var currentFixedPos = GetFixedPosition(currentPositionComp.Position);
var newFixedPosition =
2 * (BounceLimit - GetFixedMargin(movementComp)) - currentFixedPos;
SetFixedPosition(currentPositionComp, newFixedPosition);
}
public bool CheckBounce(
MovementComp movementComp,
CurrentPositionComp currentPositionComp,
LastPositionComp lastPositionComp
) =>
movementComp.SimpleBounce
? CheckSimpleBounce(movementComp, currentPositionComp, lastPositionComp)
: CheckPreciseBounce(movementComp, currentPositionComp, lastPositionComp);
private static float GetLastMovementDistanceIfPlayer(
MovementComp movementComp,
CurrentPositionComp positionComp,
LastPositionComp lastPositionComp
) =>
movementComp.SimpleBounce
? 0
: Distance.Get(
lastPositionComp.Position.Substract(positionComp.Position)
);
public override void Init(Game game)
{
Game = (RogueskivGame)game;
var playerComp = Game.Entities.GetWithComponent <PlayerComp>().Single();
PlayerHealthComp = playerComp.GetComponent <HealthComp>();
CurrentPositionComp = playerComp.GetComponent <CurrentPositionComp>();
LastPositionComp = playerComp.GetComponent <LastPositionComp>();
TimerComp = Game.Entities.GetSingleComponent <TimerComp>();
}
public override void Init(Game game)
{
Game = game;
var playerEntity = Game
.Entities
.GetWithComponent <PlayerComp>()
.Single();
PlayerComp = playerEntity.GetComponent <PlayerComp>();
PlayerPosComp = playerEntity.GetComponent <CurrentPositionComp>();
FOVComp = Game.Entities.GetSingleComponent <FOVComp>();
var boardComp = Game.Entities.GetSingleComponent <BoardComp>();
FOVComp.Init(boardComp, PlayerComp);
}
private bool CheckSimpleBounce(
MovementComp movementComp,
CurrentPositionComp currentPositionComp,
LastPositionComp lastPositionComp
)
{
var hasTraversed = HasTraversed(currentPositionComp, lastPositionComp, movementComp);
if (!hasTraversed)
{
return(false);
}
// for HorizontalWalls: check if position.X when crossing the limit is between wall.minX and wall.maxX
// for VerticalWalls : check if position.Y when crossing the limit is between wall.minY and wall.maxY
var currentFixedPos = GetFixedPosition(currentPositionComp.Position);
var currentVarPos = GetVariablePosition(currentPositionComp.Position);
var lastFixedPos = GetFixedPosition(lastPositionComp.Position);
var lastVarPos = GetVariablePosition(lastPositionComp.Position);
var deltaFixed = (currentFixedPos - lastFixedPos);
var deltaVar = (currentVarPos - lastVarPos);
var fromLastToWallFixedPos = (BounceLimit - GetFixedMargin(movementComp) - lastFixedPos);
var variablePosCrossingWall = lastVarPos + deltaVar * (fromLastToWallFixedPos / deltaFixed);
var minVarPos = VariablePosition;
var maxVarPos = VariablePosition + Size;
var isInFrontOrBehind = (
(variablePosCrossingWall + movementComp.Radius) >= minVarPos &&
(variablePosCrossingWall - movementComp.Radius) <= maxVarPos
);
if (!isInFrontOrBehind)
{
return(false);
}
ReverseSpeed(movementComp, -movementComp.BounceMomentumConservationFactor);
SimpleBounce(movementComp, currentPositionComp);
return(true);
}
public override void Init(Game game)
{
Game = (RogueskivGame)game;
BoardComp = Game.Entities.GetSingleComponent <BoardComp>();
var player = Game
.Entities
.GetWithComponent <PlayerComp>()
.Single();
PlayerId = player.Id;
PlayerPosComp = player.GetComponent <CurrentPositionComp>();
PlayerHealthComp = player.GetComponent <HealthComp>();
PlayerMovementComp = player.GetComponent <MovementComp>();
}
private static void PreciseBounce(
MovementComp movementComp,
CurrentPositionComp currentPositionComp,
LastPositionComp lastPositionComp,
PointF bouncePosition
)
{
var distance = Distance.Get(currentPositionComp.Position, bouncePosition);
if (distance > movementComp.Radius)
{
return;
}
// TODO get proper bouncing angle
var angle = Math.Atan2(
lastPositionComp.Position.Y - bouncePosition.Y,
lastPositionComp.Position.X - bouncePosition.X
);
var cosAngle = (float)Math.Cos(angle);
var sinAngle = (float)Math.Sin(angle);
currentPositionComp.SetPosition(
bouncePosition.X + (cosAngle * movementComp.Radius * PRECISE_BOUNCE_MARGIN_FACTOR),
bouncePosition.Y + (sinAngle * movementComp.Radius * PRECISE_BOUNCE_MARGIN_FACTOR)
);
var speed = movementComp.BounceMomentumConservationFactor * Distance.Get(movementComp.Speed);
movementComp.Speed = new PointF(
speed * cosAngle,
speed * sinAngle
);
movementComp.HasBounced = true;
}
protected abstract bool HasTraversed(
CurrentPositionComp currentPositionComp, LastPositionComp lastPositionComp, MovementComp movementComp
);
private bool CheckPreciseBounce(
MovementComp movementComp,
CurrentPositionComp currentPositionComp,
LastPositionComp lastPositionComp
)
{
var currentFixedPos = GetFixedPosition(currentPositionComp.Position);
var currentVarPos = GetVariablePosition(currentPositionComp.Position);
var lastFixedPos = GetFixedPosition(lastPositionComp.Position);
var lastVarPos = GetVariablePosition(lastPositionComp.Position);
var deltaFixed = (currentFixedPos - lastFixedPos);
var deltaVar = (currentVarPos - lastVarPos);
var fixedMargin = GetFixedMargin(movementComp);
var fromLastToWallFixedPos = BounceLimit - fixedMargin - lastFixedPos;
var variablePosCrossingWall = deltaFixed != 0
? lastVarPos + deltaVar * (fromLastToWallFixedPos / deltaFixed)
: 0; // TODO division by 0?
var minVarPos = VariablePosition;
var maxVarPos = VariablePosition + Size;
var isInFrontOrBehind = (
variablePosCrossingWall > minVarPos &&
variablePosCrossingWall < maxVarPos
);
if (isInFrontOrBehind)
{
var hasTraversed = HasTraversed(currentPositionComp, lastPositionComp, movementComp);
if (hasTraversed)
{
ReverseSpeed(movementComp, -movementComp.BounceMomentumConservationFactor);
SimpleBounce(movementComp, currentPositionComp);
movementComp.HasBounced = true;
return(true);
}
}
PointF?advancedBouncePosition = null;
var isInStartCorner = (Math.Abs(minVarPos - variablePosCrossingWall) < movementComp.Radius);
if (isInStartCorner)
{
advancedBouncePosition = GetStartPosition(movementComp);
}
else
{
var isInEndCorner = (Math.Abs(maxVarPos - variablePosCrossingWall) < movementComp.Radius);
if (isInEndCorner)
{
advancedBouncePosition = GetEndPosition(movementComp);
}
}
if (advancedBouncePosition.HasValue)
{
// do not return true because no more checks needed (I hope)
PreciseBounce(
movementComp,
currentPositionComp,
lastPositionComp,
advancedBouncePosition.Value
);
}
return(false);
}
