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Game Design Novice

Generic BASIC Keyword List

• DEF - define
• DIM - create a variable or array.
• END - end the game
• PEEK - look directly at memory.
• POKE - put something directly in memory.
• POS
• PSET - draw a pixel on the screen
• RANDOMIZE - set the random seed.
• RESTORE
• RND - generate a random number
• SPC() - create spaces from nothing
• TAB()
• TO
• SLEEP - pause the game.
• STEP
• TIME$
• TIMER - usually the number of seconds after the computer was switched on.

Comparison

• AND - logical and comparison operator
• OR

Conversion

Convert one thing to another.

• ASC() - convert a letter to it's ASCII number
• CHR$() - convert a number to an ASCII character.
• STR$ - convert a number to a string.
• VAL - convert a string to a number.

Math

Get the computer to do math for you.

• Mathematical operator - Basic mathematical operators.
• ABS() - converts a negative number into a positive number.
• ATN - arctangent
• COS - cosine.
• EXP - exponent
• INT - remove the decimal fraction from a number.
• LOG
• SGN - sign
• SIN - sine
• SQR - square root.
• TAN - tangent

Conditional Statements

Conditional statements allows your game to run different blocks of code based on what is happening at the time.

• IF - make a decision
• ELSE - if first you don't succeed.
• THEN - the friend of IF

Loops

• FOR
• NEXT

Input and Output

• CLS - clear the screen.
• DATA - put data in your program
• INKEY$ - check if a key has been pressed.
• INPUT - get a line of input from the player.
• PRINT - display something on the screen or in a window.
• READ - get data from DATA.
• WRITE - the evil twin brother of PRINT

File Handling

• CLOSE - close an open file.
• OPEN - open a file for access

String Handling

• LEFT$()
• LEN$() - count the number of alphanumeric characters in a string.
• MID$()
• RIGHT$()

Outdated BASIC

• Outdated BASIC - documentation for BASIC no longer used.