public static void TriangulateRivers(HexTile tile)
{
Direction outgoingRiver = tile.outgoingRiver;
List <Direction> incomingRivers = tile.incomingRivers;
List <Direction> allRivers = new List <Direction>(incomingRivers);
allRivers.Add(outgoingRiver);
Vertex center = tile.center;
Vertices <GroundVertex> ground = tile.ground;
HexMesh mesh = tile.chunk.river;
float riverDepth = tile.chunk.world.RiverDepth;
Vertices <RiverVertex> river = tile.river;
if (outgoingRiver != null || incomingRivers.Count > 0)
{
center.height = -riverDepth;
}
else
{
return;
}
if (incomingRivers.Count > 0)
{
tile.riverCenter.uv = new Vector2(0.5f, 0.5f);
}
else
{
tile.riverCenter.uv = new Vector2(0.5f, 0.3f);
}
Dictionary <Direction, List <Vector2> > centerUVs = new Dictionary <Direction, List <Vector2> >();
foreach (Direction dir in Direction.directions)
{
centerUVs[dir] = new List <Vector2>();
}
if (outgoingRiver != null)
{
river[outgoingRiver][0].uv = new Vector2(0, 1);
river[outgoingRiver][1].uv = new Vector2(1, 1);
river[outgoingRiver][2].uv = new Vector2(0, 0.7f);
river[outgoingRiver][3].uv = new Vector2(1, 0.7f);
}
foreach (Direction dir in incomingRivers)
{
if (outgoingRiver == dir.Clockwise)
{
centerUVs[dir.CounterClockwise].Add(new Vector2(1f, 4f / 10f));
centerUVs[dir.CounterClockwise.CounterClockwise].Add(new Vector2(1f, 5f / 10f));
centerUVs[dir.Opposite].Add(new Vector2(1f, 6f / 10f));
centerUVs[dir.Clockwise.Clockwise].Add(new Vector2(1f, 7f / 10f));
}
if (outgoingRiver == dir.Clockwise.Clockwise)
{
centerUVs[dir.CounterClockwise].Add(new Vector2(1f, 4f / 9f));
centerUVs[dir.CounterClockwise.CounterClockwise].Add(new Vector2(1f, 5f / 9f));
centerUVs[dir.Opposite].Add(new Vector2(1f, 6f / 9f));
centerUVs[dir.Clockwise].Add(new Vector2(0f, 4f / 7f));
}
if (outgoingRiver == dir.Opposite)
{
centerUVs[dir.CounterClockwise].Add(new Vector2(1f, 4f / 8f));
centerUVs[dir.CounterClockwise.CounterClockwise].Add(new Vector2(1f, 5f / 8f));
centerUVs[dir.Clockwise].Add(new Vector2(0f, 4f / 8f));
centerUVs[dir.Clockwise.Clockwise].Add(new Vector2(0f, 5f / 8f));
}
if (outgoingRiver == dir.CounterClockwise)
{
centerUVs[dir.Clockwise].Add(new Vector2(0f, 4f / 10f));
centerUVs[dir.Clockwise.Clockwise].Add(new Vector2(0f, 5f / 10f));
centerUVs[dir.Opposite].Add(new Vector2(0f, 6f / 10f));
centerUVs[dir.CounterClockwise.CounterClockwise].Add(new Vector2(0f, 7f / 10f));
}
else
{
centerUVs[dir.Clockwise].Add(new Vector2(0f, 4f / 9f));
centerUVs[dir.Clockwise.Clockwise].Add(new Vector2(0f, 5f / 9f));
centerUVs[dir.Opposite].Add(new Vector2(0f, 6f / 9f));
centerUVs[dir.CounterClockwise].Add(new Vector2(1f, 4f / 7f));
}
river[dir][0].uv = new Vector2(1, 0);
river[dir][1].uv = new Vector2(0, 0);
river[dir][2].uv = new Vector2(1, 0.3f);
river[dir][3].uv = new Vector2(0, 0.3f);
}
foreach (Direction dir in Direction.directions)
{
Vector2 uv = new Vector2(0f, 0f);
if (outgoingRiver == dir)
{
uv = new Vector2(0.5f, 0.6f);
}
else if (incomingRivers.Contains(dir))
{
uv = new Vector2(0.5f, 0.4f);
}
else if (incomingRivers.Count > 0)
{
Vector2 sum = new Vector2(0f, 0f);
int i = 0;
foreach (Vector2 v2 in centerUVs[dir])
{
sum += v2;
i++;
}
uv = sum / i;
}
else
{
if (outgoingRiver == dir.Clockwise)
{
uv = new Vector2(0f, 0.45f);
}
if (outgoingRiver == dir.Clockwise.Clockwise)
{
uv = new Vector2(0f, 0.15f);
}
if (outgoingRiver == dir.Opposite)
{
uv = new Vector2(0.5f, 0f);
}
if (outgoingRiver == dir.CounterClockwise.CounterClockwise)
{
uv = new Vector2(1f, 0.15f);
}
if (outgoingRiver == dir.CounterClockwise)
{
uv = new Vector2(1f, 0.45f);
}
}
river[dir][4].uv = uv;
}
foreach (Direction dir in Direction.directions)
{
if (allRivers.Contains(dir))
{
ground[dir][1].height = -riverDepth;
ground[dir][5].height = -riverDepth;
ground[dir][6].height = -riverDepth;
mesh.AddQuad(
river[dir][3],
river[dir][2],
river[dir][0],
river[dir][1]
);
mesh.AddTriangle(
river[dir][2],
river[dir][3],
river[dir][4]
);
if (allRivers.Contains(dir.Clockwise))
{
mesh.AddQuad(
river[dir][4],
river[dir][3],
river[dir.Clockwise][2],
river[dir.Clockwise][4]
);
}
else
{
mesh.AddTriangle(
river[dir][4],
river[dir][3],
river[dir.Clockwise][4]
);
}
if (!allRivers.Contains(dir.CounterClockwise))
{
mesh.AddTriangle(
river[dir.CounterClockwise][4],
river[dir][2],
river[dir][4]
);
}
}
mesh.AddTriangle(
river[dir][4],
river[dir.Clockwise][4],
tile.riverCenter
);
}
}