restore pulling UE4 code from git while setting up from sh script.

21074a2

install_run_all.sh

@@ -9,10 +9,28 @@ set -x
 
 #confirm unreal install directory
 UnrealDir=$1
-if [[ -z "$UnrealDir" ]]; then
-    # UnrealDir variable must be set like '/Users/Shared/Epic\ Games/UE_4.16'
-    echo "UnrealDir is not set."
-    exit 1
+if [[ !(-z "UnrealDir") ]]; then
+	UnrealDir="$SCRIPT_DIR/UnrealEngine"
+fi
+
+read -p "Unreal will be installed in $UnrealDir. To change it invoke script with path argument. Continue? " -n 1 -r
+echo
+if [[ ! $REPLY =~ ^[Yy]$ ]]
+then
+	popd >/dev/null
+    exit 0
+fi
+
+#install unreal
+if [[ !(-d "$UnrealDir") ]]; then
+	git clone -b 4.17 https://github.com/EpicGames/UnrealEngine.git "$UnrealDir"
+	pushd "$UnrealDir" >/dev/null
+
+	./Setup.sh
+	./GenerateProjectFiles.sh
+	make
+
+	popd >/dev/null
 fi
 
 #install airsim