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the way to getting a game on the store shelves The industry also does a lot of its work by e-mail, especially between publishers, external developers, and subcontractors E-mail may seem like a trivial reason to study English, but if you can t express yourself quickly and cleanly in print, it s going to slow you down English (literature) This is where you read the great stories, from Beowulf to Harry Potter (and if you don t think Harry Potter is great storytelling, you ve missed something) If you have any interest in being a game designer, you need to read, read, read Watching TV isn t the same even with a DVD, you can t conveniently flip back and forth between two sections, or make notes in the margin about how the story is being constructed Mathematics If you re not good at math, you can still find work in the game industry, but it s essential for a lot of jobs Algebra, geometry, analytical geometry, and trigonometry are required for anyone who wants to do programming, and very useful to anyone else, too Probability and statistics are highly valuable for understanding random numbers and natural phenomena, which many games simulate If you re going to do any physics programming you will definitely need calculus, and you should have a nodding acquaintance with it in any case Art Critical for artists; almost as critical for anyone else The look of a game creates a huge part of its atmosphere and emotional tone: cheerful, threatening, funny, mysterious, surreal, and so on Even if you can t draw a stick-figure, you should take art to learn the uses of line and color, light and shadow, mass and perspective Anybody can use a 3-D modeling tool to make a world that looks like a bunch of rectangular rooms with cubical crates in them; it takes art to make a real place and populate it with real people and creatures Music Try watching Star Wars with the sound off, and you ll quickly get a lesson in the importance of how music creates mood and enhances storytelling The screen tells us what is happening, but the music tells us how to feel about it As with art, even if you can t create music, you can still learn to appreciate what it does for a game Science Most games aren t about science, but many implement scientific principles: gravity, electricity, optics, aerodynamics Biology and anatomy are both useful for artists If you ever want to work on a sports game or vehicle simulation, it s imperative you understand Newton s laws of motion, and they turn up in a surprising number of other places as well To make walking and running animations that look right, you have to have a grasp of the principles of acceleration and momentum.

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his chapter discusses several aspects of C++ not covered in the previous chapters It also looks at some differences between C and C++, as well as some design philosophy

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As you know, C uses the functions malloc( ) and free( ) (among others) to dynamically allocate memory and to free dynamically allocated memory However, C++ contains two operators that perform the functions of allocating and freeing memory in a more efficient and easier-to-use way The operators are new and delete Their general forms are pointer_var = new var_type ; delete pointer_var ; Here, pointer_var is a pointer of type var_type The new operator allocates sufficient memory to hold a value of type var_type and returns an address to it Any data type can be allocated using new The delete operator frees the memory pointed to by pointer_var If an allocation request cannot be filled, the new operator throws an exception of type bad_alloc If your program does not catch this exception, then your program will be terminated While this default behavior is fine for short sample programs, in real-world programs that you write, you should catch this exception and process it in some rational manner To watch for this exception, you must include <new> in your program The actions of new on failure as just described are specified by ANSI/ISO Standard C++ and correctly implemented by C++ Builder The trouble is that not all compilers, especially older ones, will have implemented new in compliance with Standard C++ When C++ was first invented, new returned null on failure Later, this was changed such that new caused an exception on failure Finally, it was decided that a new failure will generate an exception by default, but that a null pointer could be returned instead, as an option Thus, new has been implemented differently, at different times, by compiler manufacturers If you are updating old code, or porting code from another environment, you will need to check all uses of new very carefully Because of the way dynamic allocation is managed, you must use delete only with a pointer to memory that was allocated using new Using delete with any other type of address will cause serious problems There are several advantages to using new instead of malloc( ) First, new automatically computes the size of the type being allocated You don t have to make use of the sizeof operator, which saves you some effort More important, it prevents the wrong amount of memory from being accidentally allocated Second, it automatically returns the correct pointer type you don t need to use a type cast Third, as you will soon see, it is possible to initialize the object being allocated using new Finally, it is possible to overload new (and delete) relative to classes you create, or globally.

History Unfortunately, in my experience, history is not taught very well in public school; it s either a dull series of dates and events or a propaganda exercise But a lot of games are set in different periods of history, and that affects almost everything you see on the screen: buildings, clothing, vehicles, and personal items, as well as the language and manners of the people Try to look beyond the raw facts and get an understanding of what it was like to live during a given period in history If you can tell your Egyptians from your Romans, and you find the names and cultures interesting, that s all to the good Typing It sounds silly, but typing fast and accurately will make your experience of using computers both more pleasant and more productive You don t want to be hunting-and-pecking your whole life You don t necessarily have to take typing classes; there are plenty of software packages that can teach it to you Almost everything you can learn in school even PE has applications in video game development somewhere Soak it all up!

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Here is a simple example of new and delete Notice how a try/catch block is used to monitor for an allocation failure

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