Watch mode for a game I'm working on

assets.sh

#! /bin/bash

function processSprite {
    file=$1
    echo "Creating sprite sheet for $file..."
    filename=$(basename $file .aseprite)
    aseprite -b "$file" --sheet "assets/$filename-Sheet.png" > /dev/null    
}

function processTilemap {
    echo "Creating tilemap..."
    tiled --export-map assets_src/tilemap.tmx assets/tilemap.json
}

if [[ "$1" =~ ".aseprite" ]]; then
    processSprite $1
    exit
fi

if [[ "$1" =~ ".tmx" ]]; then
    processTilemap
    exit
fi

ASEPRITE=$(find assets_src -name '*.aseprite')
for file in $ASEPRITE; do
    processSprite $file
done

processTilemap

watch.sh

#! /bin/bash

# To open in sticky mode: STICKY=1 ./watch.sh

# Wait for our game window to open.
function waitForOpen {
    while true
    do
        windows=$(wmctrl -l)
        if [[ "$windows" =~ "SRPG" ]];
        then
            return
        fi
    done
}

function openGame {
    # Remember the current window ID.
    activeWindow=$(xdotool getactivewindow)
    # Only reprocess what just changed.
    if [[ "$1" =~ ".go" || "$1" == "" ]]; then
        echo "Recompiling..."
        go build main.go
    else
        ./scripts/assets.sh "$1"
    fi
    # Start game in background and get its PID.
    ./main &
    PID=$!
    if [ "$STICKY" = "1" ]; then
        waitForOpen
        # Ensure original window has focus.
        wmctrl -a $activeWindow -i
        # Sticky the game in the bottom right hand of the screen.
        wmctrl -F -r SRPG -e 0,1280,840,640,360
        wmctrl -F -r SRPG -b add,above
        wmctrl -a $activeWindow -i
    fi
}

openGame

trap 'kill $PID' 2

while out=$(inotifywait --format '%w%f' -e modify,create -r assets_src pkg); do
    # This occurs when a file was deleted post-operation (as a swap).
    if [[ "$out" =~ "#" ]]; then
        continue
    fi
    echo "File changed: $out"
    kill $PID
    openGame $out
done