diff --git a/server/tools/protobuild/navmesh.proto b/server/tools/protobuild/navmesh.proto
new file mode 100644
index 00000000..c3950633
--- /dev/null
+++ b/server/tools/protobuild/navmesh.proto
@@ -0,0 +1,19 @@
+syntax = "proto2";
+package navmesh;
+
+message HeightList{
+        required int32 width = 1;
+        required int32 height = 2;
+        repeated HeightData datas = 3;
+}
+message HeightData{
+        required int32 x = 1;
+        required int32 y = 2;
+        optional int32 endx = 3;
+        repeated HeightInfo infos = 4;
+}
+
+message HeightInfo{
+        optional int32 t = 1;
+        required int32 h = 2;
+}
\ No newline at end of file