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input_keyboard_KeyboardKey.js.html
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<!DOCTYPE html>
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<title>JSDoc: Source: input/keyboard/KeyboardKey.js</title>
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<h1 class="page-title">Source: input/keyboard/KeyboardKey.js</h1>
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<article>
<pre class="prettyprint source linenums"><code>//------------------------------------------------------------------------------
// Constructor scope
//------------------------------------------------------------------------------
/**
* Creates a new instance of the KeyboardKey class.
*
* @constructor
*
* @class
* @classdesc
*
* The KeyboardKey class represents a keyboard key.
*/
rune.input.KeyboardKey = function() {
//--------------------------------------------------------------------------
// Protected properties
//--------------------------------------------------------------------------
/**
* Current state of the key.
*
* @type {number}
* @protected
* @ignore
*/
this.m_current = rune.input.KeyboardKey.RELEASED;
/**
* Previous state of the key.
*
* @type {number}
* @protected
* @ignore
*/
this.m_previous = rune.input.KeyboardKey.RELEASED;
};
//------------------------------------------------------------------------------
// Public static constants
//------------------------------------------------------------------------------
/**
* Indicates that the key was just pressed.
*
* @constant {number}
* @default 1
*/
rune.input.KeyboardKey.JUST_PRESSED = 1;
/**
* Indicates that the key has just been released.
*
* @constant {number}
* @default -1
*/
rune.input.KeyboardKey.JUST_RELEASED = -1;
/**
* Indicates that the key is pressed.
*
* @constant {number}
* @default 2
*/
rune.input.KeyboardKey.PRESSED = 2;
/**
* Indicates that the key is released.
*
* @constant {number}
* @default 0
*/
rune.input.KeyboardKey.RELEASED = 0;
//------------------------------------------------------------------------------
// Public prototype methods (API)
//------------------------------------------------------------------------------
/**
* Checks whether the key is pressed (true) or not (false).
*
* @returns {boolean}
*/
rune.input.KeyboardKey.prototype.isPressed = function() {
return this.m_current > rune.input.KeyboardKey.RELEASED;
};
/**
* Checks whether the key was just pressed (true) or not (false).
*
* @returns {boolean}
*/
rune.input.KeyboardKey.prototype.isJustPressed = function() {
return this.m_current === rune.input.KeyboardKey.JUST_PRESSED;
};
/**
* Checks whether the key was just released (true) or not (false).
*
* @returns {boolean}
*/
rune.input.KeyboardKey.prototype.isJustReleased = function() {
return this.m_current === rune.input.KeyboardKey.JUST_RELEASED;
};
/**
* Resets the state of the current key.
*
* @returns {undefined}
*/
rune.input.KeyboardKey.prototype.reset = function() {
this.m_current = rune.input.KeyboardKey.RELEASED;
this.m_previous = rune.input.KeyboardKey.RELEASED;
};
//------------------------------------------------------------------------------
// Internal prototype methods
//------------------------------------------------------------------------------
/**
* Updates the current state of the key.
*
* @return {undefined}
* @package
* @ignore
*/
rune.input.KeyboardKey.prototype.update = function() {
this.m_updateStates();
};
/**
* Simulates that the button is pressed.
*
* @returns {undefined}
* @package
* @ignore
*/
rune.input.KeyboardKey.prototype.onKeyDown = function() {
if (this.m_current > rune.input.KeyboardKey.RELEASED) this.m_current = rune.input.KeyboardKey.PRESSED;
else this.m_current = rune.input.KeyboardKey.JUST_PRESSED;
};
/**
* Simulates the release of the button.
*
* @returns {undefined}
* @package
* @ignore
*/
rune.input.KeyboardKey.prototype.onKeyUp = function() {
if (this.m_current > rune.input.KeyboardKey.RELEASED) this.m_current = rune.input.KeyboardKey.JUST_RELEASED;
else this.m_current = rune.input.KeyboardKey.RELEASED;
};
//------------------------------------------------------------------------------
// Protected prototype methods
//------------------------------------------------------------------------------
/**
* Updates the current state of the key.
*
* @returns {undefined}
* @protected
* @ignore
*/
rune.input.KeyboardKey.prototype.m_updateStates = function() {
if (this.m_previous === rune.input.KeyboardKey.JUST_RELEASED && this.m_current == rune.input.KeyboardKey.JUST_RELEASED) this.m_current = rune.input.KeyboardKey.RELEASED;
else if (this.m_previous === rune.input.KeyboardKey.JUST_PRESSED && this.m_current === rune.input.KeyboardKey.JUST_PRESSED) this.m_current = rune.input.KeyboardKey.PRESSED;
this.m_previous = this.m_current;
};</code></pre>
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