bool SetLeftOrRightVertices(LevelPiece piece)
{
// Check if we need to draw the left, right, or neither edge:
if (_player.Position.X > piece.RightEdge)
{
/*
left of us:
FR
| R
| | *
| L
FL
*/
_leftRightVertices[VertexPosition.NearLeft] = new VertexPositionColor(new Vector3(piece.RightEdge, piece.BottomEdge, 0), VisibilityView.ShadowColor);
_leftRightVertices[VertexPosition.NearRight] = new VertexPositionColor(new Vector3(piece.RightEdge, piece.TopEdge, 0), VisibilityView.ShadowColor);
return true;
}
else if (_player.Position.X < piece.LeftEdge)
{
/*
right of us:
FL
NL |
* | |
NR |
FR
*/
_leftRightVertices[VertexPosition.NearLeft] = new VertexPositionColor(new Vector3(piece.LeftEdge, piece.TopEdge, 0), VisibilityView.ShadowColor);
_leftRightVertices[VertexPosition.NearRight] = new VertexPositionColor(new Vector3(piece.LeftEdge, piece.BottomEdge, 0), VisibilityView.ShadowColor);
return true;
}
return false;
}
bool SetBottomOrTopEdgeVertices(LevelPiece piece)
{
// Check if we need to draw the top, bottom, or neither edge:
if (_player.Position.Y > piece.BottomEdge)
{
/*
above us:
FL-----FR
NL---NR
*
*/
_topBotVertices[VertexPosition.NearLeft] = new VertexPositionColor(new Vector3(piece.LeftEdge, piece.BottomEdge, 0), VisibilityView.ShadowColor);
_topBotVertices[VertexPosition.NearRight] = new VertexPositionColor(new Vector3(piece.RightEdge, piece.BottomEdge, 0), VisibilityView.ShadowColor);
return true;
}
else if (_player.Position.Y < piece.TopEdge)
{
/*
below us:
*
NR---NL
FR-----FL
*/
_topBotVertices[VertexPosition.NearLeft] = new VertexPositionColor(new Vector3(piece.RightEdge, piece.TopEdge, 0), VisibilityView.ShadowColor);
_topBotVertices[VertexPosition.NearRight] = new VertexPositionColor(new Vector3(piece.LeftEdge, piece.TopEdge, 0), VisibilityView.ShadowColor);
return true;
}
return false;
}
public DumbLevelLoader(LevelPiece.Factory levelPieceFactory)
{
_levelPieceFactory = levelPieceFactory;
}