add free-space checking for sofas

lrfurn/init.lua

+-- LRfurn mod by thefamilygrog66
+
+lrfurn = {}
+
+lrfurn.fdir_to_fwd = {
+	{  0,  1 },
+	{  1,  0 },
+	{  0, -1 },
+	{ -1,  0 },
+}
+
+function lrfurn.check_forward(pos, fdir, long)
+
+	if not fdir or fdir > 3 then fdir = 0 end
+
+	local pos2 = { x = pos.x + lrfurn.fdir_to_fwd[fdir+1][1],     y=pos.y, z = pos.z + lrfurn.fdir_to_fwd[fdir+1][2]     }
+	local pos3 = { x = pos.x + lrfurn.fdir_to_fwd[fdir+1][1] * 2, y=pos.y, z = pos.z + lrfurn.fdir_to_fwd[fdir+1][2] * 2 }
+
+	local node2 = minetest.get_node(pos2)
+	if node2 and node2.name ~= "air" then return false end
+
+	if long then
+		local node3 = minetest.get_node(pos3)
+		if node3 and node3.name ~= "air" then return false end
+	end
+
+	return true
+end
+
 dofile(minetest.get_modpath("lrfurn").."/longsofas.lua")
 dofile(minetest.get_modpath("lrfurn").."/sofas.lua")
 dofile(minetest.get_modpath("lrfurn").."/armchairs.lua")

lrfurn/longsofas.lua

@@ -32,6 +32,18 @@ for i in ipairs(longsofas_list) do
 				{-0.5, -0.5, -0.5, 0.5, 0.5, 2.5},
 			}
 		},
+        on_place = function(itemstack, placer, pointed_thing)
+			local pos = pointed_thing.above
+			local fdir = minetest.dir_to_facedir(placer:get_look_dir(), false)
+
+			if lrfurn.check_forward(pos, fdir, true) then
+				minetest.set_node(pos, {name = "lrfurn:longsofa_"..colour, param2 = fdir})
+				itemstack:take_item()
+			else
+				minetest.chat_send_player(placer:get_player_name(), "No room to place the sofa!")
+			end
+			return itemstack
+		end,
 		on_rightclick = function(pos, node, clicker)
 			if not clicker:is_player() then
 				return

lrfurn/sofas.lua

@@ -29,10 +29,21 @@ for i in ipairs(sofas_list) do
 		selection_box = {
 			type = "fixed",
 			fixed = {
-						{-0.5, -0.5, -0.5, 0.5, 0.5, 1.5},
-					}
+				{-0.5, -0.5, -0.5, 0.5, 0.5, 1.5},
+			}
 		},
+        on_place = function(itemstack, placer, pointed_thing)
+			local pos = pointed_thing.above
+			local fdir = minetest.dir_to_facedir(placer:get_look_dir(), false)
 
+			if lrfurn.check_forward(pos, fdir, true) then
+				minetest.set_node(pos, {name = "lrfurn:sofa_"..colour, param2 = fdir})
+				itemstack:take_item()
+			else
+				minetest.chat_send_player(placer:get_player_name(), "No room to place the sofa!")
+			end
+			return itemstack
+		end,
 		on_rightclick = function(pos, node, clicker)
 			if not clicker:is_player() then
 				return