/// <summary>
/// Roteate a slope by 90° (rotation = 1), 180° (rotation = 2) or 270° (rotation = 3)
/// </summary>
/// <param name="frontCoordinates"></param>
/// <param name="rotation"></param>
protected FaceCoordinates RotateSlope(FaceCoordinates frontCoordinates, byte rotation)
{
for (int i = 0; i < rotation; i++)
{
Vector3 topLeft = frontCoordinates.BottomLeft;
Vector3 topRight = frontCoordinates.TopLeft;
Vector3 bottomRight = frontCoordinates.TopRight;
Vector3 bottomLeft = frontCoordinates.BottomRight;
frontCoordinates.TopLeft = topLeft;
frontCoordinates.TopRight = topRight;
frontCoordinates.BottomRight = bottomRight;
frontCoordinates.BottomLeft = bottomLeft;
}
return frontCoordinates;
}
/// <summary>
/// Creates a instance of GameObject
/// </summary>
/// <param name="startUpPosition">The initial position for the object</param>
/// <param name="startUpRotation">The initial rotation of the object</param>
/// <param name="shape">The shape of the object</param>
protected GameObject(Vector3 startUpPosition, float startUpRotation, CompactRectangle shape)
{
drawCoordinates = new FaceCoordinates(startUpPosition, shape.Width, shape.Height);
Position3 = startUpPosition;
RotationAngle = startUpRotation;
this.shape = shape;
this.spriteID = 0;
verticesCollection = new List<VertexPositionNormalTexture>();
indicesCollection = new List<int>();
}
/// <summary>
/// Based in the position of the Block calculate the positons of the verticies of the block.
/// </summary>
/// <param name="frontCoords">The coordinates of the top face of the cube</param>
/// <param name="backCoords">The coordinates of the botton face of the cube</param>
protected void PrepareCoordinates(out FaceCoordinates frontCoords, out FaceCoordinates backCoords)
{
float x = 0;
float y = 0;
float width = 1;
float height = 1;
PrepareCoordinates(x, y, width, height, out frontCoords, out backCoords);
}
/// <summary>
/// Based in the position of the Block calculate the positons of the verticies of the block.
/// </summary>
/// <param name="frontCoords">The coordinates of the top face of the cube</param>
/// <param name="backCoords">The coordinates of the botton face of the cube</param>
/// <param name="x">X position of the TopLeft corner.</param>
/// <param name="y">Y position of the TopLeft corner.</param>
/// <param name="width"></param>
/// <param name="height"></param>
protected void PrepareCoordinates(float x, float y, float width, float height, out FaceCoordinates frontCoords, out FaceCoordinates backCoords)
{
Vector3 position = Position;
position.Y *= -1;
//Coordinates of the cube
Vector3 topLeftFront = (new Vector3(x, -y, 1f) + position) * GlobalScalar;
Vector3 topRightFront = (new Vector3(x + width, -y, 1f) + position) * GlobalScalar;
Vector3 bottomLeftFront = (new Vector3(x, -(y + height), 1f) + position) * GlobalScalar;
Vector3 bottomRightFront = (new Vector3(x + width, -(y + height), 1f) + position) * GlobalScalar;
frontCoords = new FaceCoordinates(topLeftFront, topRightFront, bottomRightFront, bottomLeftFront);
Vector3 topLeftBack = (new Vector3(x, -y, 0.0f) + position) * GlobalScalar;
Vector3 topRightBack = (new Vector3(x + width, -y, 0.0f) + position) * GlobalScalar;
Vector3 bottomLeftBack = (new Vector3(x, -(y + height), 0.0f) + position) * GlobalScalar;
Vector3 bottomRightBack = (new Vector3(x + width, -(y + height), 0.0f) + position) * GlobalScalar;
backCoords = new FaceCoordinates(topLeftBack, topRightBack, bottomRightBack, bottomLeftBack);
}
/// <summary>
/// Creates the Top vertices Coordinates.
/// </summary>
/// <param name="frontCoords"></param>
/// <param name="backCoords"></param>
protected void CreateTopVertices(FaceCoordinates frontCoords, FaceCoordinates backCoords, Vector2[] texture)
{
if (!Top)
return;
Coors.Add(new VertexPositionNormalTexture(frontCoords.TopRight, Vector3.Zero, texture[2]));
Coors.Add(new VertexPositionNormalTexture(backCoords.TopLeft, Vector3.Zero, texture[0]));
Coors.Add(new VertexPositionNormalTexture(backCoords.TopRight, Vector3.Zero, texture[1]));
Coors.Add(new VertexPositionNormalTexture(frontCoords.TopLeft, Vector3.Zero, texture[3]));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 3);
IndexBufferCollection.Add(startIndex + 1);
}
protected void CreateLeftVertices(FaceCoordinates frontCoords, FaceCoordinates backCoords, Vector2[] texture)
{
if (!Left)
return;
Coors.Add(new VertexPositionNormalTexture(frontCoords.TopLeft, Vector3.Zero, texture[3]));
Coors.Add(new VertexPositionNormalTexture(backCoords.BottomLeft, Vector3.Zero, texture[1]));
Coors.Add(new VertexPositionNormalTexture(frontCoords.BottomLeft, Vector3.Zero, texture[2]));
Coors.Add(new VertexPositionNormalTexture(backCoords.TopLeft, Vector3.Zero, texture[0]));
//Left also has a strange index buffer order...
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 3);
IndexBufferCollection.Add(startIndex);
}
/// <summary>
/// Creates the Lid vertices Coordinates.
/// </summary>
/// <param name="lidCoords">The lid coordinates.</param>
/// <param name="texture">The lid texture</param>
protected void CreateFrontVertices(FaceCoordinates lidCoords, Vector2[] texture)
{
if (!Lid)
return;
Coors.Add(new VertexPositionNormalTexture(lidCoords.TopRight, Vector3.Zero, texture[2]));
Coors.Add(new VertexPositionNormalTexture(lidCoords.BottomRight, Vector3.Zero, texture[1]));
Coors.Add(new VertexPositionNormalTexture(lidCoords.TopLeft, Vector3.Zero, texture[3]));
Coors.Add(new VertexPositionNormalTexture(lidCoords.BottomLeft, Vector3.Zero, texture[0]));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 3);
IndexBufferCollection.Add(startIndex + 2);
}
/// <summary>
/// Creates a Low Slope.
/// </summary>
/// <param name="subType"></param>
/// <param name="rotation"></param>
protected void SetLowSlope(byte subType, byte rotation)
{
//Sample is a right slope, use it for orientation, it gets rotated to fit all other directions
FaceCoordinates frontCoordinates;
FaceCoordinates backCoordinates;
PrepareCoordinates(out frontCoordinates, out backCoordinates);
float slopeScalar = 1f;
switch (subType)
{
case 26:
slopeScalar = 0.5f;
break;
case 45:
slopeScalar = 0;
break;
case 7:
slopeScalar = 0.875f;
break;
}
Vector3 middleTopLeft = frontCoordinates.TopLeft;
Vector3 middleTopRight = frontCoordinates.TopRight;
Vector3 middleBottomRight = frontCoordinates.BottomRight;
Vector3 middleBottomLeft = frontCoordinates.BottomLeft;
var middleCoordinates = new FaceCoordinates(middleTopLeft, middleTopRight, middleBottomRight, middleBottomLeft);
if (rotation > 0)
{
frontCoordinates = RotateSlope(frontCoordinates, rotation);
backCoordinates = RotateSlope(backCoordinates, rotation);
middleCoordinates = RotateSlope(middleCoordinates, rotation);
}
middleCoordinates.TopLeft.Z -= slopeScalar * GlobalScalar.Z;
middleCoordinates.TopRight.Z -= slopeScalar * GlobalScalar.Z;
middleCoordinates.BottomRight.Z -= slopeScalar * GlobalScalar.Z;
middleCoordinates.BottomLeft.Z -= slopeScalar * GlobalScalar.Z;
//Lid face
if (Lid)
{
RotationType lidRotation = Lid.Rotation;
lidRotation = RotateEnum(lidRotation, rotation);
Vector2[] texPos = textures.GetNormalTexture((UInt32)Lid.TileNumber, Lid.Rotation, Lid.Flip);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.TopRight, Vector3.Zero, texPos[2]));
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.BottomRight, Vector3.Zero, texPos[1]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomLeft, Vector3.Zero, texPos[0]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopLeft, Vector3.Zero, texPos[3]));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 3);
}
BlockFace topFace = null;
BlockFace bottomFace = null;
BlockFace rightFace = null;
switch (rotation)
{
case 0: //No rotation
topFace = Top;
bottomFace = Bottom;
rightFace = Right;
break;
case 1: //
topFace = Left;
bottomFace = Right;
rightFace = Top;
break;
case 2:
topFace = Bottom;
bottomFace = Top;
rightFace = Left;
break;
case 3:
topFace = Right;
bottomFace = Left;
rightFace = Bottom;
break;
}
//Top face
if (topFace)
{
Vector2[] texPos = textures.GetNormalTexture((UInt32)topFace.TileNumber, topFace.Rotation, topFace.Flip);
Vector2 center = GetCenterPosition(ref texPos[3], ref texPos[0], slopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.TopRight, Vector3.Zero, center));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopRight, Vector3.Zero, texPos[0]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopLeft, Vector3.Zero, texPos[1]));
int startIndex = Coors.Count - 3;
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 0);
}
//Bottom face
if (bottomFace)
{
Vector2[] texPos = textures.GetNormalTexture((UInt32)bottomFace.TileNumber, bottomFace.Rotation, bottomFace.Flip);
Vector2 center = GetCenterPosition(ref texPos[2], ref texPos[1], slopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.BottomRight, Vector3.Zero, center));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomRight, Vector3.Zero, texPos[1]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomLeft, Vector3.Zero, texPos[0]));
int startIndex = Coors.Count - 3;
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
}
//Right face
if (rightFace) //this face is not supported by GTA2, the editor removes this face.
{
Vector2[] texPos = textures.GetNormalTexture((UInt32)rightFace.TileNumber, rightFace.Rotation, rightFace.Flip);
Vector2 center = GetCenterPosition(ref texPos[1], ref texPos[2], slopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.TopRight, Vector3.Zero, center));
center = GetCenterPosition(ref texPos[0], ref texPos[3], slopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.BottomRight, Vector3.Zero, center));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomRight, Vector3.Zero, texPos[3]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopRight, Vector3.Zero, texPos[2]));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 0);
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 3);
IndexBufferCollection.Add(startIndex + 2);
}
}
protected void SetUpSlopeHigh(byte subType, byte rotation)
{
//Sample is a right slope, use it for orientation, it gets rotated to fit all other directions
FaceCoordinates frontCoordinates;
FaceCoordinates backCoordinates;
PrepareCoordinates(out frontCoordinates, out backCoordinates);
float middleSlopeScalar = 1f;
float frontSlopeScalar = 0f;
switch (subType)
{
case 26:
middleSlopeScalar = 0.5f;
frontSlopeScalar = 0;
break;
case 7:
middleSlopeScalar = 0.875f;
frontSlopeScalar = 0.75f;
break;
case 8:
middleSlopeScalar = 0.75f;
frontSlopeScalar = 0.625f;
break;
case 9:
middleSlopeScalar = 0.625f;
frontSlopeScalar = 0.5f;
break;
case 10:
middleSlopeScalar = 0.5f;
frontSlopeScalar = 0.375f;
break;
case 11:
middleSlopeScalar = 0.375f;
frontSlopeScalar = 0.25f;
break;
case 12:
middleSlopeScalar = 0.25f;
frontSlopeScalar = 0.125f;
break;
case 13:
middleSlopeScalar = 0.125f;
frontSlopeScalar = 0;
break;
}
Vector3 middleTopLeft = frontCoordinates.TopLeft;
Vector3 middleTopRight = frontCoordinates.TopRight;
Vector3 middleBottomRight = frontCoordinates.BottomRight;
Vector3 middleBottomLeft = frontCoordinates.BottomLeft;
var middleCoordinates = new FaceCoordinates(middleTopLeft, middleTopRight, middleBottomRight, middleBottomLeft);
if (rotation > 0)
{
frontCoordinates = RotateSlope(frontCoordinates, rotation);
backCoordinates = RotateSlope(backCoordinates, rotation);
middleCoordinates = RotateSlope(middleCoordinates, rotation);
}
frontCoordinates.TopLeft.Z -= frontSlopeScalar * GlobalScalar.Z;
frontCoordinates.TopRight.Z -= frontSlopeScalar * GlobalScalar.Z;
frontCoordinates.BottomRight.Z -= frontSlopeScalar * GlobalScalar.Z;
frontCoordinates.BottomLeft.Z -= frontSlopeScalar * GlobalScalar.Z;
middleCoordinates.TopLeft.Z -= middleSlopeScalar * GlobalScalar.Z;
middleCoordinates.TopRight.Z -= middleSlopeScalar * GlobalScalar.Z;
middleCoordinates.BottomRight.Z -= middleSlopeScalar * GlobalScalar.Z;
middleCoordinates.BottomLeft.Z -= middleSlopeScalar * GlobalScalar.Z;
//Front face (diagonal)
if (Lid.TileNumber > 0)
{
RotationType lidRotation = Lid.Rotation;
lidRotation = RotateEnum(lidRotation, rotation);
Vector2[] texPos = textures.GetNormalTexture((UInt32)Lid.TileNumber, Lid.Rotation, Lid.Flip);
Coors.Add(new VertexPositionNormalTexture(frontCoordinates.TopRight, Vector3.Zero, texPos[2]));
Coors.Add(new VertexPositionNormalTexture(frontCoordinates.BottomRight, Vector3.Zero, texPos[1]));
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.BottomLeft, Vector3.Zero, texPos[0]));
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.TopLeft, Vector3.Zero, texPos[3]));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex + 0);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 0);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 3);
}
BlockFace topFace = null;
BlockFace bottomFace = null;
BlockFace leftFace = null;
BlockFace rightFace = null;
switch (rotation)
{
case 0:
topFace = Top;
bottomFace = Bottom;
leftFace = Left;
rightFace = Right;
break;
case 1:
topFace = Left;
bottomFace = Right;
leftFace = Bottom;
rightFace = Top;
break;
case 2:
topFace = Bottom;
bottomFace = Top;
leftFace = Right;
rightFace = Left;
break;
case 3:
topFace = Right;
bottomFace = Left;
leftFace = Top;
rightFace = Bottom;
break;
}
//Top face
if (topFace)
{
Vector2[] texPos = textures.GetNormalTexture((UInt32)topFace.TileNumber, topFace.Rotation, topFace.Flip);
Vector2 center = GetCenterPosition(ref texPos[0], ref texPos[3], frontSlopeScalar);
Coors.Add(new VertexPositionNormalTexture(frontCoordinates.TopRight, Vector3.Zero, center)); //was 3
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopRight, Vector3.Zero, texPos[0]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.TopLeft, Vector3.Zero, texPos[1]));
center = GetCenterPosition(ref texPos[1], ref texPos[2], middleSlopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.TopLeft, Vector3.Zero, center));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 0);
IndexBufferCollection.Add(startIndex + 3);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 0);
}
//Bottom face
if (bottomFace)
{
Vector2[] texPos = textures.GetNormalTexture((UInt32)bottomFace.TileNumber, bottomFace.Rotation, bottomFace.Flip);
Vector2 center = GetCenterPosition(ref texPos[2], ref texPos[1], frontSlopeScalar);
Coors.Add(new VertexPositionNormalTexture(frontCoordinates.BottomRight, Vector3.Zero, center)); //was texPos[2]
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomRight, Vector3.Zero, texPos[1]));
Coors.Add(new VertexPositionNormalTexture(backCoordinates.BottomLeft, Vector3.Zero, texPos[0]));
center = GetCenterPosition(ref texPos[3], ref texPos[0], middleSlopeScalar);
Coors.Add(new VertexPositionNormalTexture(middleCoordinates.BottomLeft, Vector3.Zero, center));
int startIndex = Coors.Count - 4;
IndexBufferCollection.Add(startIndex);
IndexBufferCollection.Add(startIndex + 1);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 0);
IndexBufferCollection.Add(startIndex + 2);
IndexBufferCollection.Add(startIndex + 3);
}
//ToDo Left face (but probably not supported in GTA2 anyway)
//Right face
Vector2[] texture = textures.GetNormalTexture((UInt32)Right.TileNumber, Right.Rotation, Right.Flip);
CreateRightVertices(frontCoordinates, backCoordinates, texture);
}