I did most of one of these on an FPGA in verilog for fun: https://github.com/dormando/verilog-raycaster https://github.com/dormando/verilog-raycaster - took a l

I did most of one of these on an FPGA in verilog for fun: https://github.com/dormando/verilog-raycaster https://github.com/dormando/verilog-raycaster - took a lot longer than a weekend :)