- Psykick2D
Helper
static Helper
Methods
boolean has( )
Determine if an object has a property (not on the prototype chain)
| obj | Object | ||
| key |
Object defaults( )
Adds default properties to an object
| obj |
T extend( )
Adds or replaces properties on an object
| obj |
inherit( )
Does very basic inheritance for a class
| Derived | Function | Class to do the inheriting | |
| Base | Function | Base class |
boolean isKeyDown( )
Returns if a given key is pressed
| keyCode | number | Key code. Usually obtained from Keys | |
| modifiers | Object | ||
| modifiers.shift | boolean | If true, will check if shift was held at the time | false |
| modifiers.ctrl | boolean | If true, will check if control was held at the time | false |
| modifiers.alt | boolean | If true, will check if alt was held at the time | false |
boolean isObject( )
Determines if the argument is an object
| obj |
boolean isArray( )
Determines if the arguments in an array
| obj |
Array getKeysDown( )
Returns all of the keys currently pressed
sign( )
Returns 1 if x is positive
-1 if x is negative
0 if x is 0
| x | number |