daggerfall-unity: enable automatic runtime download

engines/daggerfall-unity/assets/run-daggerfall-unity.sh

@@ -1,6 +1,11 @@
 #!/bin/bash
 
+# Constants
 ORIGINALPWD="$PWD"
+MAX_WAIT_SECONDS=300  # Maximum time to wait for the Steam Linux Runtime (adjust as needed)
+STEAM_RUNTIME_PATH="$DEPPATH_1070560"
+IS_TESTING="true"
+TESTING_PATH="$HOME/.local/share/Steam/steamapps/common/SteamLinuxRuntime/"
 
 cd ../
 
@@ -12,14 +17,54 @@ if [ ! -d DFUPDATED ]; then
     LD_PRELOAD="" ln -rsf DF/DFCD/DAGGER/ARENA2/*.VID DFUPDATED/DAGGER/ARENA2
 fi
 
-if [[ ! -z "${DEPPATH_1070560}" ]]; then
-    runtimepath="$DEPPATH_1070560"
-    LD_PRELOAD="" echo "Automatically detected runtimepath at $runtimepath"
-else
-    echo "Steam Linux Runtime is not installed. Please ensure that it is installed and try again." > last_error.txt
-    exit 10
+# Function to check if the Steam Linux Runtime is installed
+is_runtime_installed() {
+    if [[ ! -z "${STEAM_RUNTIME_PATH}" && -d "${STEAM_RUNTIME_PATH}" ]]; then
+        return 0  # Runtime found
+    else
+        return 1  # Runtime not found
+    fi
+}
+
+# Function to install the Steam Linux Runtime silently
+install_runtime() {
+    echo "Installing the Steam Linux Runtime..."
+    steam "steam://dev/console/ +app_install 1070560" >/dev/null 2>&1
+}
+
+# Check if in testing mode and set the runtime path accordingly
+if [[ "$IS_TESTING" == "true" ]]; then
+    STEAM_RUNTIME_PATH="$TESTING_PATH"
+fi
+
+# Install the Steam Linux Runtime if not already installed
+if ! is_runtime_installed; then
+    echo "Steam Linux Runtime is not installed. Installing now..."
+    install_runtime
+
+    # Check for the Steam Linux Runtime in a loop
+    start_time=$(date +%s)
+    while true; do
+        if is_runtime_installed; then
+            break  # Runtime found, exit the loop
+        else
+            current_time=$(date +%s)
+            elapsed_time=$((current_time - start_time))
+
+            if [ "$elapsed_time" -ge "$MAX_WAIT_SECONDS" ]; then
+                echo "Timeout: Steam Linux Runtime installation took too long."
+                exit 1
+            else
+                echo "Waiting for Steam Linux Runtime installation..."
+                sleep 5  # Adjust the sleep interval as needed
+            fi
+        fi
+    done
 fi
 
+# The Steam Linux Runtime is successfully installed
+echo "Steam Linux Runtime is installed and ready."
+
 if [ ! -f ~/.config/unity3d/Daggerfall\ Workshop/Daggerfall\ Unity/settings.ini ]; then
     if [ ! -d ~/.config/unity3d/Daggerfall\ Workshop/Daggerfall\ Unity ]; then
         LD_PRELOAD="" mkdir -p ~/.config/unity3d/Daggerfall\ Workshop/Daggerfall\ Unity
@@ -30,4 +75,4 @@ if [ ! -f ~/.config/unity3d/Daggerfall\ Workshop/Daggerfall\ Unity/settings.ini
     LD_PRELOAD="" echo -e "MyDaggerfallPath = ./DFUPDATED/DAGGER" >> ~/.config/unity3d/Daggerfall\ Workshop/Daggerfall\ Unity/settings.ini
 fi
 
-"$runtimepath/scout-on-soldier-entry-point-v2" --verbose -- ./DaggerfallUnity.x86_64
+"$STEAM_RUNTIME_PATH/scout-on-soldier-entry-point-v2" --verbose -- ./DaggerfallUnity.x86_64