Add CH dependencies temporarily.cesky-hvozd

Before merge to master should remove them again and split out util functions (e.g. formspec lib)

1 files changed, 32 insertions, 0 deletions

diff --git a/ch_core/vgroups.lua b/ch_core/vgroups.lua
new file mode 100644
index 0000000..5b43fd8
--- /dev/null
+++ b/ch_core/vgroups.lua
@@ -0,0 +1,32 @@
+ch_core.open_submod("vgroups")
+
+local vgroups = {}
+local private_vgroups = {}
+
+function ch_core.create_private_vgroup(vgroup, tbl)
+	if vgroups[vgroup] then
+		error("Vgroup "..vgroup.." demanded as private already exists!")
+	end
+	local result = tbl or {}
+	vgroups[vgroup] = result
+	private_vgroups[vgroup] = true
+	return result
+end
+
+function ch_core.get_shared_vgroup(vgroup)
+	if private_vgroups[vgroup] then
+		error("Vgroup "..vgroup.." is private!")
+	end
+	local result = vgroups[vgroup]
+	if not result then
+		result = {}
+		vgroups[vgroup] = result
+	end
+	return result
+end
+
+function ch_core.try_read_vgroup(vgroup)
+	return vgroups[vgroup]
+end
+
+ch_core.close_submod("vgroups")