This is just a test, move the mouse to look around, space to shoot. Hope you like it! Thank you daves777 (see notes and credits)
Lots of credit to the talented scratcher daves777 !!! I got the idea of a 3D world without raytracing from him. I examined daves777's code in his first-person(pov) shooter games, it is a unique, smart idea to use 3 costumes on a 'panorama' shaped background, so I made a test to see if I could do the same, and it almost worked!