It's quite a few years now since I wrote any games but I expect the same old techniques are still used - e.g. Also, I don't think Java apps are quite as quick as C generated native code apps. Not really familiar with Java, I too thought that Java lacked the pointer manipulation of C. With 3D games, tools such as, say, 3D Studio or even autocad, are used to provide model and maybe surface meshes. 3D games, more often than not, use vector graphics with fast fill routines/rendering engines. Actual genuinely pixel-accurate collision detection is usually a major speed killer and CPU cycles hogger and is usually not necessary.
For sophisticated 'pixel accurate' collision games, a circular pick region is usually used. For many games, where, say, sprites are used, a simple, very quick to check, rectangular pick area is sufficient. Many games use a standard 'pick area' for collision testing. How accurate and fast the detection is is usually decided by the game. In almost all games, most of the logic of the game centers around the collision detection. But the other concern (and arguably, really the main concern) is 'collision' detection. The main parts of a game ('arcade' type games assumed here) - from a programmer's perspective are fluid, flicker-free and fast movement. Games programming, including 3D, games, is possible in Java - but not having written any Java games myself I can't really comment on using Java for writing games. 'C' is the best programming language for games - given the right libraries. I've never heard that Java support pointer manipulation, but if you're sure about it, there could be a new things in Java - never found ones since my studies. in making the graphic utilities functioning properly. I've explored some in C/C++, which uses Allegro, OpenGL, etc.
The engine involve is something like a graphical library extensions or API that you can use through your development. There are common type of coding principle used in game development - mostly people uses OO concept(the object oriented approach), but sometimes it's easier to use prebuild library and just link it up and focus to your own logics. The first one, it's just easy to install Java in windows, just download it from site ( Opens a new window Opens a new window - the link may be taken by oracle ) and follow the instruction. I can just answer for you the first 2 part of your question as I'm a software developer under a windows platform, and currently have a proved proficiency in all sorts of windows programming - including Java and C.
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