Hi Micuat,
Thanks for your reply!
Regarding this project, I was hoping to find out if the inputs and outputs that I defined for the “arrows” are correct. So the “arrow.js” file is the critical file to look at. I copied all other neural net and genetic algorithm scripts from “p5.js Web Editor” which is developed by Daniel and works perfectly. Based on my observation, after a number of generations there should be an arrow to stay in the scene and hit balloons. My policy is to reposition the arrows that hit the balloons on the top origin point and dispose other unsuccessful arrow. So the arrow with the best performance should be able to hit a balloon and appear in the origin base iteratively 