Comparing Inputs to Outputs Simon Game

[KC1]

For a huge project in my VHDL class, we have to program a game. I chose the game Simon and it seems to be a bit more difficult than I anticipated. The problem I am having right now is I'm trying to compare user input on switches to the display shown on the LEDs. Is there a way to do this? It doesn't compare signals (or I'm doing it wrong) and I'm just wondering if there is actually a way to do this. Also, I use behavioral (no portmaps, component stuff.)

Thanks in advance!