public void Cull(bool combine)
{
for (int x = 0; x < MineGame.chunk_size; x++)
{
for (int y = 0; y < MineGame.chunk_size; y++)
{
for (int z = 0; z < MineGame.chunk_height; z++)
{
Block cur = blocks[x, y, z];
if (!cur.active)
{
continue;
}
cur.render_faces[Block.top_face] = Convert.ToInt16(z == MineGame.chunk_height - 1 || !blocks[x, y, z + 1].active);
cur.render_faces[Block.bottom_face] = Convert.ToInt16((z == 0 || !blocks[x, y, z - 1].active) && this.radial_distance != planet.radial_distance);
cur.render_faces[Block.north_face] = Convert.ToInt16(x == MineGame.chunk_size - 1 || !blocks[x + 1, y, z].active);
cur.render_faces[Block.south_face] = Convert.ToInt16(x == 0 || !blocks[x - 1, y, z].active);
cur.render_faces[Block.west_face] = Convert.ToInt16(y == 0 || !blocks[x, y - 1, z].active);
cur.render_faces[Block.east_face] = Convert.ToInt16(y == MineGame.chunk_size - 1 || !blocks[x, y + 1, z].active);
}
}
}
vertex_count = 0;
for (int x = 0; x < MineGame.chunk_size; x++)
{
for (int y = 0; y < MineGame.chunk_size; y++)
{
int starting_index = 0;
for (int z = 0; z < MineGame.chunk_height; z++)
{
Block cur = blocks[x, y, z];
cur.combine_primary = false;
bool isLastBlockInColumn = true;// !combine || (y == MineGame.chunk_height - 1) || !cur.are_combinable(blocks[x, y + 1, z]);
var bottom_height_offset = starting_index - y;
if (!isLastBlockInColumn)
{
continue;
}
else
{
starting_index = y + 1;
}
if (cur.rendered_vertice_count() == 0)
{
continue;
}
cur.combine_height = bottom_height_offset;
cur.combine_primary = true;
vertex_count += 6 * cur.rendered_vertice_count();
}
}
}
}
public void UpdateBuffer()
{
if (vertex_count != 0)
{
block_vertices = new VertexPositionColorTexture[vertex_count];
block_vertex_index = 0;
}
for (int x = 0; x < MineGame.chunk_size; x++)
{
for (int y = 0; y < MineGame.chunk_size; y++)
{
for (int z = 0; z < MineGame.chunk_height; z++)
{
Block cur = blocks[x, y, z];
if (cur.rendered_vertice_count() == 0)
{
continue;
}
float bottom = 0.0f; // cur.radial_distance;
float top = 1.0f; // cur.radial_distance + planet.height_step;
Vector3 north_east_top = new Vector3(0.0f, top, -planet.step * 0.5);
Vector3 north_west_top = new Vector3(0.0f, top, 0.0f);
Vector3 south_east_top = new Vector3(0.0f, top, 0.0f);
Vector3 south_west_top = new Vector3(0.0f, top, 0.0f);
Vector3 north_east_bottom = new Vector3(0.0f, bottom, 0.0f);
Vector3 north_west_bottom = new Vector3(0.0f, bottom, 0.0f);
Vector3 south_east_bottom = new Vector3(0.0f, bottom, 0.0f);
Vector3 south_west_bottom = new Vector3(0.0f, bottom, 0.0f);
/*
* Vector3 north_east_top = ToCartesian(top, cur.latitude + planet.step, cur.longitude + planet.step);
* Vector3 north_west_top = ToCartesian(top, cur.latitude + planet.step, cur.longitude);
* Vector3 south_east_top = ToCartesian(top, cur.latitude, cur.longitude + planet.step);
* Vector3 south_west_top = ToCartesian(top, cur.latitude, cur.longitude);
* Vector3 north_east_bottom = ToCartesian(bottom, cur.latitude + planet.step, cur.longitude + planet.step);
* Vector3 north_west_bottom = ToCartesian(bottom, cur.latitude + planet.step, cur.longitude);
* Vector3 south_east_bottom = ToCartesian(bottom, cur.latitude, cur.longitude + planet.step);
* Vector3 south_west_bottom = ToCartesian(bottom, cur.latitude, cur.longitude);
*/
for (int i = 0; i < 6; i++)
{
if (cur.render_faces[i] != 1) // dont render it
{
continue;
}
var a = Color.White;
if (cur.type == BlockType.Grass && i == Block.top_face)
{
a = Color.FromNonPremultiplied(107, 168, 64, 255);
}
int offset = block_vertex_index;
Vector2 textureTopLeft = planet.game.texture_coordinates[cur.type][i, Block.textureTopLeft];
Vector2 textureBottomLeft = planet.game.texture_coordinates[cur.type][i, Block.textureBottomLeft];
Vector2 textureTopRight = planet.game.texture_coordinates[cur.type][i, Block.textureTopRight];
Vector2 textureBottomRight = planet.game.texture_coordinates[cur.type][i, Block.textureBottomRight];
switch (i + 1)
{
case 1: //front //north
block_vertices[offset + 0] = new VertexPositionColorTexture(north_west_bottom, a, textureBottomRight);
block_vertices[offset + 1] = new VertexPositionColorTexture(north_west_top, a, textureTopRight);
block_vertices[offset + 2] = new VertexPositionColorTexture(north_east_top, a, textureTopLeft);
block_vertices[offset + 3] = new VertexPositionColorTexture(north_east_top, a, textureTopLeft);
block_vertices[offset + 4] = new VertexPositionColorTexture(north_east_bottom, a, textureBottomLeft);
block_vertices[offset + 5] = new VertexPositionColorTexture(north_west_bottom, a, textureBottomRight);
break;
case 2: //back //south
block_vertices[offset + 0] = new VertexPositionColorTexture(south_west_bottom, a, textureBottomLeft);
block_vertices[offset + 1] = new VertexPositionColorTexture(south_east_bottom, a, textureBottomRight);
block_vertices[offset + 2] = new VertexPositionColorTexture(south_east_top, a, textureTopRight);
block_vertices[offset + 3] = new VertexPositionColorTexture(south_east_top, a, textureTopRight);
block_vertices[offset + 4] = new VertexPositionColorTexture(south_west_top, a, textureTopLeft);
block_vertices[offset + 5] = new VertexPositionColorTexture(south_west_bottom, a, textureBottomLeft);
break;
case 3: //top
block_vertices[offset + 0] = new VertexPositionColorTexture(north_west_bottom, a, textureTopLeft);
block_vertices[offset + 1] = new VertexPositionColorTexture(south_east_bottom, a, textureBottomRight);
block_vertices[offset + 2] = new VertexPositionColorTexture(south_west_bottom, a, textureBottomLeft);
block_vertices[offset + 5] = new VertexPositionColorTexture(south_east_bottom, a, textureBottomRight);
block_vertices[offset + 4] = new VertexPositionColorTexture(north_east_bottom, a, textureTopRight);
block_vertices[offset + 3] = new VertexPositionColorTexture(north_west_bottom, a, textureTopLeft);
break;
case 4: //Bottom
block_vertices[offset + 0] = new VertexPositionColorTexture(south_west_top, a, textureBottomLeft);
block_vertices[offset + 1] = new VertexPositionColorTexture(south_east_top, a, textureBottomRight);
block_vertices[offset + 2] = new VertexPositionColorTexture(north_west_top, a, textureTopLeft);
block_vertices[offset + 3] = new VertexPositionColorTexture(south_east_top, a, textureBottomRight);
block_vertices[offset + 4] = new VertexPositionColorTexture(north_east_top, a, textureTopRight);
block_vertices[offset + 5] = new VertexPositionColorTexture(north_west_top, a, textureTopLeft);
break;
case 5: //east
block_vertices[offset + 0] = new VertexPositionColorTexture(north_east_top, a, textureTopRight);
block_vertices[offset + 1] = new VertexPositionColorTexture(south_east_top, a, textureTopLeft);
block_vertices[offset + 2] = new VertexPositionColorTexture(south_east_bottom, a, textureBottomLeft);
block_vertices[offset + 3] = new VertexPositionColorTexture(south_east_bottom, a, textureBottomLeft);
block_vertices[offset + 4] = new VertexPositionColorTexture(north_east_bottom, a, textureBottomRight);
block_vertices[offset + 5] = new VertexPositionColorTexture(north_east_top, a, textureTopRight);
break;
case 6: //west
block_vertices[offset + 0] = new VertexPositionColorTexture(south_west_bottom, a, textureBottomRight);
block_vertices[offset + 1] = new VertexPositionColorTexture(south_west_top, a, textureTopRight);
block_vertices[offset + 2] = new VertexPositionColorTexture(north_west_top, a, textureTopLeft);
block_vertices[offset + 5] = new VertexPositionColorTexture(south_west_bottom, a, textureBottomRight);
block_vertices[offset + 4] = new VertexPositionColorTexture(north_west_bottom, a, textureBottomLeft);
block_vertices[offset + 3] = new VertexPositionColorTexture(north_west_top, a, textureTopLeft);
break;
}
block_vertex_index += 6;
}
}
}
}
}