Adding modding folder with a hacked build.

modding/hacked/ss1/content/archive/level/TilePosition.go

@@ -0,0 +1,62 @@
+package level
+
+// TilePosition contains the coordinates of a tile in a level.
+type TilePosition struct {
+	X byte
+	Y byte
+}
+
+// FinePosition contains the coordinates of an object within a tile.
+type FinePosition struct {
+	X byte
+	Y byte
+}
+
+// SlopeFactorFor returns the factor of how much the slope of given tile type would apply at the fine position.
+func (pos FinePosition) SlopeFactorFor(tileType TileType) float32 {
+	southToNorth := float32(pos.Y) / 255
+	westToEast := float32(pos.X) / 255
+	swneDiag := func(northWest, southEast float32) float32 {
+		if pos.X < pos.Y {
+			return northWest
+		}
+		return southEast
+	}
+	nwseDiag := func(southWest, northEast float32) float32 {
+		if (255 - pos.X) < pos.Y {
+			return northEast
+		}
+		return southWest
+	}
+
+	switch tileType {
+	case TileTypeSlopeSouthToNorth:
+		return southToNorth
+	case TileTypeSlopeWestToEast:
+		return westToEast
+	case TileTypeSlopeNorthToSouth:
+		return 1 - southToNorth
+	case TileTypeSlopeEastToWest:
+		return 1 - westToEast
+
+	case TileTypeValleySouthEastToNorthWest:
+		return nwseDiag(1-westToEast, southToNorth)
+	case TileTypeValleySouthWestToNorthEast:
+		return swneDiag(southToNorth, westToEast)
+	case TileTypeValleyNorthWestToSouthEast:
+		return nwseDiag(1-southToNorth, westToEast)
+	case TileTypeValleyNorthEastToSouthWest:
+		return swneDiag(1-westToEast, 1-southToNorth)
+
+	case TileTypeRidgeNorthWestToSouthEast:
+		return nwseDiag(westToEast, 1-southToNorth)
+	case TileTypeRidgeNorthEastToSouthWest:
+		return swneDiag(1-southToNorth, 1-westToEast)
+	case TileTypeRidgeSouthEastToNorthWest:
+		return nwseDiag(southToNorth, 1-westToEast)
+	case TileTypeRidgeSouthWestToNorthEast:
+		return swneDiag(westToEast, southToNorth)
+	}
+
+	return 0.0
+}