add a few new shapes to the table saw: (#67)

* 1/16 slab, L-shaped (two sides)
* 1/16 slab, corner-shaped (three sides)
* 1/16 slab, U-shaped (three sides)

1 files changed, 36 insertions, 7 deletions

diff --git a/stairsplus/slabs.lua b/stairsplus/slabs.lua
index 2a86b0f..5d9a434 100644
--- a/stairsplus/slabs.lua
+++ b/stairsplus/slabs.lua
@@ -28,6 +28,20 @@ local slabs_defs = {
 	["_2"] = 2,
 	["_14"] = 14,
 	["_15"] = 15,
+	["_two_sides"] = {
+						{ -0.5, -0.5, -0.5, 0.5, -7/16, 7/16 },
+						{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
+					},
+	["_three_sides"] = {
+						{ -7/16, -0.5, -0.5, 0.5, -7/16, 7/16 },
+						{ -7/16, -0.5, 7/16, 0.5, 0.5, 0.5 },
+						{ -0.5, -0.5, -0.5, -7/16, 0.5, 0.5 }
+					},
+	["_three_sides_u"] = {
+						{ -0.5, -0.5, -0.5, 0.5, 0.5, -7/16 },
+						{ -0.5, -0.5, -7/16, 0.5, -7/16, 7/16 },
+						{ -0.5, -0.5, 7/16, 0.5, 0.5, 0.5 }
+					}
 }
 
 function stairsplus:register_slab_alias(modname_old, subname_old, modname_new, subname_new)
@@ -47,21 +61,36 @@ end
 function stairsplus:register_slab(modname, subname, recipeitem, fields)
 	local defs = stairsplus.copytable(slabs_defs)
 	local desc_base = S("%s Slab"):format(fields.description)
-	for alternate, num in pairs(defs) do
-		local def = {
-			node_box = {
-				type = "fixed",
-				fixed = {-0.5, -0.5, -0.5, 0.5, (num/16)-0.5, 0.5},
+	for alternate, shape in pairs(defs) do
+
+		local def = {}
+
+		if type(shape) ~= "table" then
+			def = {
+					node_box = {
+						type = "fixed",
+						fixed = {-0.5, -0.5, -0.5, 0.5, (shape/16)-0.5, 0.5},
+					},
+					description = ("%s (%d/16)"):format(desc_base, shape)
+				}
+		else
+			def = {
+				node_box = {
+					type = "fixed",
+					fixed = shape,
+				},
+				description = desc_base
 			}
-		}
+		end
+
 		for k, v in pairs(fields) do
 			def[k] = v
 		end
+
 		def.drawtype = "nodebox"
 		def.paramtype = "light"
 		def.paramtype2 = def.paramtype2 or "facedir"
 		def.on_place = minetest.rotate_node
-		def.description = ("%s (%d/16)"):format(desc_base, num)
 		def.groups = stairsplus:prepare_groups(fields.groups)
 		if fields.drop and not (type(fields.drop) == "table") then
 			def.drop = modname.. ":slab_" .. fields.drop .. alternate