AGS Pointers for Dummies: Difference between revisions
→Variables
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==Variables== | ==Variables== | ||
A variable, in the context of scripting, is a way to represent a value. In AGS, there are five different [http://www.bigbluecup.com/manual/Datatypes.htm data types] which can be used to represent a variable. These types include '''char''', '''short''', '''int''', '''String'''<sup>1</sup>, and '''float''' | A variable, in the context of scripting, is a way to represent a value. In AGS, there are five different [http://www.bigbluecup.com/manual/Datatypes.htm data types] which can be used to represent a variable. These types include '''char''', '''short''', '''int''', '''String'''<sup>1</sup>, and '''float'''. A '''char'''-type variable is one that can hold only a single character (i.e., 'A', 'B', etc.) or a number within the range 0 to 255. A '''short'''-type variable can store integers within the range -32768 to 32767. An '''int'''-type variable can store integer values within the range -2147483648 to 2147483647. A '''String'''-type variable can hold a string of characters (i.e., "this is some text!") of ''virtually''<sup>2</sup> infinite length. A '''float'''-type variable can store floating-point decimals within the range -2147483648.0 to 2147483647.0, and has precision<sup>3</sup> up to approximately 6 decimal places, though this will vary based on the actual number. | ||
For information on defining and assigning values to variables read the entry in the manual [http://www.bigbluecup.com/manual/Datatypes.htm here]. | For information on defining and assigning values to variables read the entry in the manual [http://www.bigbluecup.com/manual/Datatypes.htm here]. | ||
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<sup>1</sup>'''<font size="1">The String type is only defined as of AGS v2.71 and higher. Older versions use the now deprecated string type.</font>''' | <sup>1</sup>'''<font size="1">The String type is only defined as of AGS v2.71 and higher. Older versions use the now deprecated string type.</font>''' | ||
<sup>2</sup>'''<font size="1">Floating-point decimals won't always evaluate as you might expect when doing certain mathematical operations (this is due to their precision levels). See the manual entry on [http://www.bigbluecup.com/manual/Datatypes.htm data types] for more information.</font>''' | <sup>2</sup>'''<font size="1">The length for Strings is limited by your computer's physical memory. A String will take up 4 bytes of memory, plus 1 byte for each character it contains.</font>''' | ||
<sup>3</sup>'''<font size="1">Floating-point decimals won't always evaluate as you might expect when doing certain mathematical operations (this is due to their precision levels). See the manual entry on [http://www.bigbluecup.com/manual/Datatypes.htm data types] for more information.</font>''' | |||
==Pointers== | ==Pointers== | ||