Add -c switch to /placeschem to clean area first

init.lua

@@ -1299,11 +1299,16 @@ end
 
 -- [chatcommand] Place schematic
 minetest.register_chatcommand("placeschem", {
-	description = S("Place schematic at the position specified or the current player position (loaded from @1)", export_path_trunc),
+	description = S("Place schematic at the position specified or the current player position (loaded from @1). “-c” will clear the area first", export_path_trunc),
 	privs = {server = true},
-	params = S("<schematic name>[.mts] [<x> <y> <z>]"),
+	params = S("<schematic name>[.mts] [-c] [<x> <y> <z>]"),
 	func = function(name, param)
-		local schem, p = string.match(param, "^([^ ]+) *(.*)$")
+		local schem, clear, p = string.match(param, "^([^ ]+) (%-c) *(.*)$")
+		if not schem then
+			schem, p = string.match(param, "^([^ ]+) *(.*)$")
+		end
+		clear = clear == "-c"
+
 		local pos = minetest.string_to_pos(p)
 
 		if not schem then
@@ -1323,10 +1328,22 @@ minetest.register_chatcommand("placeschem", {
 			-- files when we reload. minetest.read_schematic circumvents that.
 			local schematic = minetest.read_schematic(schem_path, {})
 			if schematic then
+				if clear then
+					local posses = {}
+					for z=pos.z, pos.z+schematic.size.z-1 do
+					for y=pos.y, pos.y+schematic.size.y-1 do
+					for x=pos.x, pos.x+schematic.size.x-1 do
+						table.insert(posses, {x=x,y=y,z=z})
+					end
+					end
+					end
+					minetest.bulk_set_node(posses, {name="air"})
+				end
 				success = minetest.place_schematic(pos, schematic, "random", nil, false)
 			end
 		else
-			-- Legacy support for Minetest versions that do not have minetest.read_schematic
+			-- Legacy support for Minetest versions that do not have minetest.read_schematic.
+			-- Note: "-c" is ignored here.
 			success = minetest.place_schematic(schem_path, schematic, "random", nil, false)
 		end
 

locale/schemedit.de.tr

@@ -71,8 +71,8 @@ The node HUD is not updated automatically and may be outdated. The node HUD only
 Schematic Void=Schematic-Lücke
 This is an utility block used in the creation of schematic files. It should be used together with a schematic creator. When saving a schematic, all nodes with a schematic void will be left unchanged when the schematic is placed again. Technically, this is equivalent to a block with the node probability set to 0.=Dies ist ein Hilfsblock, der bei der Erstellung von Schematic-Dateien benutzt wird. Er sollte zusammen mit einem Schematic-Macher benutzt werden. Wenn ein Schematic gespeichert wird, werden alle Nodes mit einer Schematic-Lücke unverändert gelassen, wenn das Schematic erneut platziert wird. Technisch gesehen ist dieses Verhalten identisch mit einem Block, der eine Node-Wahrscheinlichkeit von 0 hat.
 Just place the schematic void like any other block and use the schematic creator to save a portion of the world.=Platzieren Sie einfach die Schematic-Lücke wie jeden anderen Block und benutzen Sie den Schematic-Macher, um einen Teil der Welt zu speichern.
-Place schematic at the position specified or the current player position (loaded from @1)=Schematic an der angegebenen Position oder der aktuellen Spielerposition platzieren (geladen von @1)
+Place schematic at the position specified or the current player position (loaded from @1). “-c” will clear the area first=Schematic an der angegebenen Position oder der aktuellen Spielerposition platzieren (geladen von @1). Mit „-c“ wird das Gebiet zuerst geleert
-<schematic name>[.mts] [<x> <y> <z>]=<Schematic-Name>[.mts] [<x> <y> <z>]
+<schematic name>[.mts] [-c] [<x> <y> <z>]=<Schematic-Name>[.mts] [-c] [<x> <y> <z>]
 No schematic file specified.=Keinen Schematic-Namen angegeben.
 Schematic file could not be loaded!=Schematic-Datei konnte nicht geladen werden!
 Convert .mts schematic file to .lua file (loaded from @1)=„.mts“-Schematicdatei zu „.lua“-Datei konvertieren (geladen von @1)

locale/template.txt

@@ -71,8 +71,8 @@ The node HUD is not updated automatically and may be outdated. The node HUD only
 Schematic Void=
 This is an utility block used in the creation of schematic files. It should be used together with a schematic creator. When saving a schematic, all nodes with a schematic void will be left unchanged when the schematic is placed again. Technically, this is equivalent to a block with the node probability set to 0.=
 Just place the schematic void like any other block and use the schematic creator to save a portion of the world.=
-Place schematic at the position specified or the current player position (loaded from @1)=
+Place schematic at the position specified or the current player position (loaded from @1). “-c” will clear the area first=
-<schematic name>[.mts] [<x> <y> <z>]=
+<schematic name>[.mts] [-c] [<x> <y> <z>]=
 No schematic file specified.=
 Schematic file could not be loaded!=
 Convert .mts schematic file to .lua file (loaded from @1)=