Server/py: Add startup wrappers supporting Python variant.

diff --git a/roguelike_python b/roguelike_python
new file mode 100755 (executable)
index 0000000..b002721
--- /dev/null
+++ b/roguelike_python
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Wrapper to the script so that its suppressed server messages get read on exit.
+./start_server_client_union.sh "$@"
+
+# For some reason, mere sync won't ensure a log is written out, so wait a while.
+sync
+sleep 0.5
+if [ -e ./log ]
+then
+    cat log
+fi

diff --git a/start_server_python_client_union.sh b/start_server_python_client_union.sh
new file mode 100755 (executable)
index 0000000..5894947
--- /dev/null
+++ b/start_server_python_client_union.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+# Abort the script on error.
+set -e
+
+# Don't let any log leftovers from before interfere.
+if [ -e ./log ]
+then
+    rm log
+fi
+
+# Give helpful message to players that want to start without compiling first.
+if [ ! -e ./roguelike-client ]
+then
+    echo 'No ./roguelike-client file found to execute. Try "./redo" first?'
+    false
+fi
+
+# Use shell script's arguments for server and pipe server output to log file.
+# This script's wrapper script will read it out on exit.
+python3 ./plomrogue-server.py "$@" > log 2>&1 &
+
+# Give server some time to start up and exit on error.
+sleep 0.01
+
+# The client should not start if the server is not running. (If the server was
+# running in the foreground, any error exit of it so far would be caught by "set
+# -e" above. But "set -e" is blind to error codes generated in the background.)
+kill -0 $! 2> /dev/null
+
+# Give server some time (max. 10 seconds) to generate its worldstate file.
+i=0
+while [ ! -e server/worldstate ] && [ $i -le 1000 ]
+do
+    sleep 0.01
+    i=`expr $i + 1`
+done
+if [ ! -e server/worldstate ]
+then
+    echo "Server failed generating worldstate file within given time limit."
+    false
+fi
+
+# Only start the interface when everything else went well.
+kill -0 $! 2> /dev/null
+./roguelike-client