daggerfall-unity: enable automatic runtime download

[Jpxe]

I've added a feature that allows automatic downloading, like we discussed

Check it out and let me know what you think. Improvements and suggestions are welcome of course

New Engine Package Submissions

• Have you followed the instructions in the build documentation?
• Have you run the build locally and ensured the package allowed you to launch and play the Steam game?
• Have you updated the packages.json file?
• Have you ensured that there is not already a pull request or active engine package for the one you are adding?

Common Code Submissions

• Have you verified that the changes are isolated to the features or fixes you are wanting to do?
• Have you tested at least one of the engines to ensure that your changes do not break existing workflow?
• Have you described what your changes are accomplishing?

[d10sfan]

Looks like a good start thanks! I think the client could be the best place for this since it'll apply to multiple engines so we don't have to re-do it multiple times. This will be very handy for implementing it though, as the checking and all that is a good point

[Jpxe]

Sounds good! I was also experimenting with installing multiple steam apps, something like this:

# Define an array of app IDs for the required Steam apps
REQUIRED_APP_IDS=("1070560" "ANOTHER_APP_ID" "YET_ANOTHER_APP_ID")

# Function to check if a specific Steam app is installed
is_app_installed() {
    local app_id="$1"
    if [[ ! -z "$app_id" && -d "$STEAM_RUNTIME_PATH/$app_id" ]]; then
        return 0  # App found
    else
        return 1  # App not found
    fi
}

# Function to install a Steam app silently
install_app() {
    local app_id="$1"
    echo "Installing Steam app with App ID: $app_id..."
    steam "steam://dev/console/ +app_install $app_id" >/dev/null 2>&1
}

# Install each required Steam app if not already installed
for app_id in "${REQUIRED_APP_IDS[@]}"; do
    if ! is_app_installed "$app_id"; then
        echo "Required Steam app with App ID $app_id is not installed. Installing now..."
        install_app "$app_id"

        # Check for the Steam app in a loop
        start_time=$(date +%s)
        while true; do
            if is_app_installed "$app_id"; then
                break  # App 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 app installation took too long."
                    exit 1
                else
                    echo "Waiting for Steam app installation..."
                    sleep 5  # Adjust the sleep interval as needed
                fi
            fi
        done
    else
        echo "Required Steam app with App ID $app_id is already installed."
    fi
done

# The required Steam apps are successfully installed
echo "Required Steam apps are installed and ready."