Change the monsterLR object's sprite to "monster1_nice"
This monster sprite has these subimages.
Now we will have the monster facing whatever direction it's moving in.
Add the End Step event...... what is the monster doing just after it hits a wall?
Test it out - it should move/change like this...
First change the sprite for the object to "monster2_nice"...
Add a new event End Step with the following actions:
Test it out - it should move/change like this...