so just so you know this is not a mod I remade Undertale with me in it JJ is me by the way and its pretty good if i do say so myself anyway the controls are the same as Undertale but if you don't know the controls of that game to move around you use the arrow keys and you  click z to select and with the blue blocks of code you want to stand still with the orange one you want to me moving when or if you touch it with the  green one the green one heals you when you run into it and the Wight code block just damages you if you aren't moving at the  orange one you lose health if you move at the blue one you lose health  also play Undertale  its a neat game