diff -r 11202097584f -r 745c73e0e644 rust/hedgewars-engine/src/lib.rs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rust/hedgewars-engine/src/lib.rs	Tue Nov 06 17:00:35 2018 +0100
@@ -0,0 +1,18 @@
+#[repr(C)]
+pub struct Preview {
+    width: u32,
+    height: u32,
+    hedgehogs_number: u8,
+    land: *const u8,
+}
+
+
+#[no_mangle]
+pub extern "C" fn protocol_version() -> u32 {
+    56
+}
+
+#[no_mangle]
+pub extern "C" fn generate_preview () -> Preview  {
+    unimplemented!()
+}