private void RebuildVertexBuffer(LandscapeBlock block)
{
CanAlterHeight = false;
// Create the new VB
block.VertexBuffer = new VertexBuffer(GraphicsDevice, block.Declaration, block.Verts.Length, BufferUsage.None);
block.VertexBuffer.SetData(block.Verts);
CanAlterHeight = true;
}
private void AdjustHeight(Direction direction, float weight)
{
bool rebuild = false;
for (int bx = 0; bx < numBlocksX; bx++)
{
for (int by = 0; by < numBlocksZ; by++)
{
LandscapeBlock block = Blocks[bx][by];
// If camera is in the bounding frustum check it for a hit
if (block.Visible)
{
switch (direction)
{
case Direction.Up:
for (int x = 0; x < block.Width; x++)
{
for (int y = 0; y < block.Height; y++)
{
// Index of this vertice
int index = block.GetIndex(x, y);
// Get the distance from this veritce to the mouse position
float distance = Vector3.Distance(block.Verts[index].Position, MouseCoords);
if (distance <= BrushSize)
{
Vector3 height = new Vector3(0, weight, 0);
height.Normalize();
// Center
block.Verts[index].Position += height;
if (block.Left != null)
{
for (int x1 = 0; x1 < block.Left.Width; x1++)
{
for (int y1 = 0; y1 < block.Left.Height; y1++)
{
float d2 = Vector3.Distance(block.Left.Verts[block.Left.GetIndex(x1, y1)].Position,
block.Verts[index].Position);
if (d2 <= 5)
{
block.Left.Verts[block.Left.GetIndex(x1, y1)].Position.Y = block.Verts[index].Position.Y;
}
}
}
}
if (block.Right != null)
{
for (int x1 = 0; x1 < block.Right.Width; x1++)
{
for (int y1 = 0; y1 < block.Right.Height; y1++)
{
float d2 = Vector3.Distance(block.Right.Verts[block.Right.GetIndex(x1, y1)].Position,
block.Verts[index].Position);
if (d2 <= 5)
{
block.Right.Verts[block.Right.GetIndex(x1, y1)].Position.Y = block.Verts[index].Position.Y;
}
}
}
}
if (block.Top != null)
{
for (int x1 = 0; x1 < block.Top.Width; x1++)
{
for (int y1 = 0; y1 < block.Top.Height; y1++)
{
float d2 = Vector3.Distance(block.Top.Verts[block.Top.GetIndex(x1, y1)].Position,
block.Verts[index].Position);
if (d2 <= 5)
{
block.Top.Verts[block.Top.GetIndex(x1, y1)].Position.Y = block.Verts[index].Position.Y;
}
}
}
}
if (block.Bottom != null)
{
for (int x1 = 0; x1 < block.Bottom.Width; x1++)
{
for (int y1 = 0; y1 < block.Bottom.Height; y1++)
{
float d2 = Vector3.Distance(block.Bottom.Verts[block.Bottom.GetIndex(x1, y1)].Position,
block.Verts[index].Position);
if (d2 <= 5)
{
block.Bottom.Verts[block.Bottom.GetIndex(x1, y1)].Position.Y = block.Verts[index].Position.Y;
}
}
}
}
rebuild = true;
}
}
}
break;
case Direction.Down:
break;
}
if (rebuild)
{
RebuildVertexBuffer(block);
}
}
}
}
}
