diff --git a/src/lua_maplib.c b/src/lua_maplib.c
index 8ce6551f7..7e1097ced 100644
--- a/src/lua_maplib.c
+++ b/src/lua_maplib.c
@@ -158,7 +158,11 @@ enum vertex_e {
 	vertex_valid = 0,
 	vertex_x,
 	vertex_y,
-	vertex_z
+	vertex_z,
+	vertex_floorz,
+	vertex_floorzset,
+	vertex_ceilingz,
+	vertex_ceilingzset
 };
 
 static const char *const vertex_opt[] = {
@@ -166,6 +170,10 @@ static const char *const vertex_opt[] = {
 	"x",
 	"y",
 	"z",
+	"floorz",
+	"floorzset",
+	"ceilingz",
+	"ceilingzset",
 	NULL};
 
 enum ffloor_e {
@@ -973,6 +981,18 @@ static int vertex_get(lua_State *L)
 	case vertex_z:
 		lua_pushfixed(L, vertex->z);
 		return 1;
+	case vertex_floorzset:
+		lua_pushboolean(L, vertex->floorzset);
+		return 1;
+	case vertex_ceilingzset:
+		lua_pushboolean(L, vertex->ceilingzset);
+		return 1;
+	case vertex_floorz:
+		lua_pushfixed(L, vertex->floorz);
+		return 1;
+	case vertex_ceilingz:
+		lua_pushfixed(L, vertex->ceilingz);
+		return 1;
 	}
 	return 0;
 }