void AddSlopedTile(Point3D p, ChunkList chunks, int row, int col, int color_index)
{
double x2 = p.X + Tile.SIZE;
double z2 = p.Z + Tile.SIZE;
int y11 = chunks.GetTileAt(row, col).Height;
int y21 = chunks.GetTileAt(row + 1, col).Height;
int y12 = y11;
int y22 = y21;
if (col < TileRow.NUM_COLUMNS - 1)
{
y12 = chunks.GetTileAt(row, col + 1).Height;
y22 = chunks.GetTileAt(row + 1, col + 1).Height;
}
// adjust slope color to reflect tile height
int ymax = Math.Max(Math.Max(Math.Max(Math.Abs(y11), Math.Abs(y12)), Math.Abs(y21)), Math.Abs(y22));
color_index = (int)(color_index + Math.Abs(ymax) / 84 + 1.5);
// limit "darkest" color to be base color + intensity 1
int min_color = (color_index & 0xF8) + 1;
color_index = Math.Max(color_index, min_color);
AddRectangle(
new Point3D(p.X, y11, p.Z),
new Point3D(x2, y12, p.Z),
new Point3D(x2, y22, z2),
new Point3D(p.X, y21, z2),
Palette.DiffuseMaterial[color_index]);
}
void BuildTile3D(ChunkList chunks, int row, int col, Point3D p)
{
Tile tile = chunks.GetTileAt(row, col);
int color = 0;
switch (tile.Type)
{
case Tile.TYPE.EMPTY_0: return;
case Tile.TYPE.BLUE_1: color = 0x37; break;
case Tile.TYPE.BLUE_JEWEL_2: color = 0x37; AddMathboxObject(Mathbox.Mesh.JEWEL, p + new Vector3D(Tile.SIZE / 2, -p.Y - Tile.SIZE, Tile.SIZE / 2)); break;
case Tile.TYPE.UP_DOWN_3: color = 0x17; break;
case Tile.TYPE.BRIDGE_4: color = 0x39; break;
case Tile.TYPE.RED_5: color = 0x0F; break;
case Tile.TYPE.BLACK_6: return;
case Tile.TYPE.KILL_EYE_7: color = 0x0F; break;
case Tile.TYPE.BLUE_SLOPE_8: AddSlopedTile(p, chunks, row, col, 0x30); return;
case Tile.TYPE.DESTRUCTABLE_9: color = 0x34; break;
case Tile.TYPE.GREEN_10: color = 0x25; break;
case Tile.TYPE.BLUE_11: color = 0x37; break;
case Tile.TYPE.BLUE_12: color = 0x37; break;
case Tile.TYPE.RED_SLOPE_13: AddSlopedTile(p, chunks, row, col, 0x8); return;
case Tile.TYPE.YELLOW_14: color = 0x1F; break;
case Tile.TYPE.ILLEGAL_15: return;
}
AddFlatTile(chunks, row, col, p, tile);
}
void AddFlatTile(ChunkList chunks, int row, int col, Point3D p, Tile tile)
{
p.Y = tile.Height;
double bottom = Tile.SIZE * 2;
Point3D p2 = p + new Vector3D(Tile.SIZE, 0, 0);
Point3D p3 = p2 + new Vector3D(0, 0, Tile.SIZE);
Point3D p4 = p + new Vector3D(0, 0, Tile.SIZE);
Point3D p5 = new Point3D(p.X, bottom, p.Z);
Point3D p6 = p5 + new Vector3D(Tile.SIZE, 0, 0);
Point3D p7 = p6 + new Vector3D(0, 0, Tile.SIZE);
Point3D p8 = p5 + new Vector3D(0, 0, Tile.SIZE);
// limit "darkest" color to be base color + intensity 1
int color_index = tile.ColorIndex;
int min_color = (color_index & 0xF8) + 1;
// top
Material m = Palette.DiffuseMaterial[Math.Max(color_index, min_color)];
AddRectangle(p, p2, p3, p4, m);
// left/right
// m = Palette.DiffuseMaterial[Math.Max(color_index - 2, min_color)];
bool left = true;
if (col > 0)
{
Tile t = chunks.GetTileAt(row, col - 1);
if (t.IsVisible && !t.IsSloped && t.Height <= p.Y)
{
left = false;
}
}
if (left)
{
AddRectangle(p, p4, p8, p5, m);
}
bool right = true;
if (col < 15)
{
Tile t = chunks.GetTileAt(row, col + 1);
if (t.IsVisible && !t.IsSloped && t.Height <= p.Y)
{
right = false;
}
}
if (right)
{
AddRectangle(p2, p6, p7, p3, m);
}
// front / back
// m = Palette.DiffuseMaterial[Math.Max(color_index - 4, min_color)];
bool front = true;
if (row < chunks.NumRows - 1)
{
Tile t = chunks.GetTileAt(row + 1, col);
if (t.IsVisible && !t.IsSloped && t.Height <= p.Y)
{
front = false;
}
}
if (front)
{
AddRectangle(p3, p4, p8, p7, m);
}
bool back = true;
if (row > 0)
{
Tile t = chunks.GetTileAt(row - 1, col);
if (t.IsVisible && !t.IsSloped && t.Height <= p.Y)
{
back = false;
}
}
if (back)
{
AddRectangle(p, p5, p6, p2, m);
}
// bottom
//m = Palette.DiffuseMaterial[Math.Max(color_index - 6, min_color)];
AddRectangle(p5, p8, p7, p6, m);
}