diff -r 038e3415100a -r bf6cf4dd847a project_files/frontlib/ipc/ipcprotocol.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/project_files/frontlib/ipc/ipcprotocol.h	Fri Jun 08 19:52:24 2012 +0200
@@ -0,0 +1,38 @@
+#ifndef IPCPROTOCOL_H_
+#define IPCPROTOCOL_H_
+
+#include "../buffer.h"
+#include "../model/map.h"
+
+#include <stdbool.h>
+
+/**
+ * Create a message in the IPC protocol format and add it to
+ * the vector. Use a format string and extra parameters as with printf.
+ *
+ * Returns nonzero if something goes wrong. In that case the buffer
+ * contents are unaffected.
+ */
+int flib_ipc_append_message(flib_vector vec, const char *fmt, ...);
+
+/**
+ * Append IPC messages to the buffer that configure the engine for
+ * this map.
+ *
+ * Unfortunately the engine needs a slightly different configuration
+ * for generating a map preview.
+ *
+ * Returns nonzero if something goes wrong. In that case the buffer
+ * contents are unaffected.
+ */
+int flib_ipc_append_mapconf(flib_vector vec, flib_map *map, bool mappreview);
+
+/**
+ * Append a seed message to the buffer.
+ *
+ * Returns nonzero if something goes wrong. In that case the buffer
+ * contents are unaffected.
+ */
+int flib_ipc_append_seed(flib_vector vec, const char *seed);
+
+#endif /* IPCPROTOCOL_H_ */