public TileType(string codeName, Int2 gridSize, string toolboxIconSprite, TileCategory category, ITileTypeData data)
{
DebugEx.Assert(Sprite.IsValidElmFunctionName(codeName));
CodeName = codeName;
GridSize = gridSize;
ToolboxIconSprite = toolboxIconSprite;
Category = category;
Data = data;
}
public void AssertPath(ITileTypeData data)
{
var margin = 0.01;
bool ValueClose(double value0, double value1) => Math.Abs(value0 - value1) < margin;
bool OnTileEdge(Double2 point) =>
(ValueClose(point.X, 0) || ValueClose(point.X, GridSize.X)) &&
(ValueClose(point.Y, 0) || ValueClose(point.Y, GridSize.Y));
bool OnGridEdge(Double2 point) =>
(ValueClose(point.X % 1, 0) && ValueClose(point.Y % 1, 0.5)) ||
(ValueClose(point.Y % 1, 0) && ValueClose(point.X % 1, 0.5));
bool PathValid(Double2 start, Double2 end) => OnTileEdge(start) && OnGridEdge(start) && OnTileEdge(end) && OnGridEdge(end);
switch (data)
{
case Rail rail:
DebugEx.Assert(
PathValid(rail.Path.Func(0), rail.Path.Func(1)),
"Path must start and end on different grid edges that are also on the edge of the tile.");
break;
case RailFork rail:
var pathOnStart = rail.PathOn.Func(0);
var pathOffStart = rail.PathOn.Func(0);
DebugEx.Assert(
PathValid(pathOnStart, rail.PathOn.Func(1)),
"On path must start and end on different grid edges that are also on the edge of the tile.");
DebugEx.Assert(
PathValid(pathOffStart, rail.PathOff.Func(1)),
"Off path must start and end on different grid edges that are also on the edge of the tile.");
DebugEx.Assert(
!ValueClose(pathOnStart.X, pathOffStart.X) || !ValueClose(pathOnStart.Y, pathOffStart.Y),
"On and off path must start at the same place.");
break;
case Depot depot:
var pathStart = depot.Path.Func(0);
DebugEx.Assert(
OnGridEdge(pathStart) && OnTileEdge(pathStart) && !OnTileEdge(depot.Path.Func(1)),
"Path should start at the edge of the tile and end inside it");
break;
default:
throw new NotImplementedException();
}
}