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Warning! This version of documentation is OUTDATED, as it describes an older SDK version! Please switch to the documentation for the latest SDK version.
Warning! This version of documentation describes an old SDK version which is no longer supported! Please upgrade to the latest SDK version.

If-Else

The if construct allows executing code fragments, if a certain condition is true. The optional else part executes some other code, if the condition is false.

Syntax

Source code (UnigineScript)
if(expression) { 
	// code_if_true
} else { 
	// code_if_false 
}

Parts

  • expression is a condition.

Example

Source code (UnigineScript)
int a = 2;
int b = 5;

if(a > b) {
	log.message("true\n");
} else {
	log.message("false\n");
}

// output: false

You can use if and else separetely.

Source code (UnigineScript)
int a=2;
if(a == 2) log.message("a is equal to 2\n");

// the result is: a is equal to 2

Notice
Note that if you use a complex boolean expression as a condition, the expression will be evaluated from the left to the right (short-circuit evaluation):
Source code (UnigineScript)
int func(int a) {
	return a;
}

// there will be only one (the first) call of func()
if(func(0) && func(1)) log.message("true\n");
// func() will be called twice
if(func(1) && func(1)) log.message("true\n");
// there will be only one (the first) call of func()
if(func(1) || func(1)) log.message("true\n");
// func() will be called twice
if(func(0) || func(1)) log.message("true\n");
Last update: 2017-07-03
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