Game Class

Extends EventTarget

Module: cc

cc.game is the singleton object for game related functions.

Index

Properties

• EVENT_HIDE String Event triggered when game hide to background.
• EVENT_SHOW String Event triggered when game back to foreground
• EVENT_GAME_INITED String Event triggered after game inited, at this point all engine objects and game scripts are loaded
• EVENT_RENDERER_INITED String Event triggered after renderer inited, at this point you will be able to use the render context
• CONFIG_KEY Object Key of config
• frame Object The outer frame of the game canvas, parent of cc.container.
• container HTMLDivElement The container of game canvas, equals to cc.container.
• canvas HTMLCanvasElement The canvas of the game, equals to cc._canvas.
• config Object 1.

Methods

• onStart Callback when the scripts of engine have been load.
• setFrameRate Set frameRate of game.
• step Run the game frame by frame.
• pause Pause the game main loop.
• resume Resume the game from pause.
• isPaused Check whether the game is paused.
• restart Restart game.
• end End game, it will close the game window
• prepare Prepare game.
• run Run game with configuration object and onStart function.
• addPersistRootNode Add a persistent root node to the game, the persistent node won't be destroyed during scene transition....
• removePersistRootNode Remove a persistent root node.
• isPersistRootNode Check whether the node is a persistent root node.
• on Register an callback of a specific event type on the EventTarget.
• off Removes the listeners previously registered with the same type, callback, target and or useCapture,...
• targetOff Removes all callbacks previously registered with the same target (passed as parameter).
• once Register an callback of a specific event type on the EventTarget,...
• dispatchEvent Dispatches an event into the event flow.
• emit Send an event to this object directly, this method will not propagate the event to any other objects.

Details

Properties

EVENT_HIDE

Event triggered when game hide to background. Please note that this event is not 100% guaranteed to be fired on Web platform, on native platforms, it corresponds to enter background event, os status bar or notification center may not trigger this event.

Examples

cc.game.on(cc.game.EVENT_HIDE, function () {
    cc.audioEngine.pauseMusic();
    cc.audioEngine.pauseAllEffects();
});

EVENT_SHOW

Event triggered when game back to foreground Please note that this event is not 100% guaranteed to be fired on Web platform, on native platforms, it corresponds to enter foreground event.

EVENT_GAME_INITED

Event triggered after game inited, at this point all engine objects and game scripts are loaded

EVENT_RENDERER_INITED

Event triggered after renderer inited, at this point you will be able to use the render context

CONFIG_KEY

Key of config

frame

The outer frame of the game canvas, parent of cc.container.

container

The container of game canvas, equals to cc.container.

canvas

The canvas of the game, equals to cc._canvas.

config

The current game configuration, including:

1. debugMode
   "debugMode" possible values :
   0 - No message will be printed.
   1 - cc.error, cc.assert, cc.warn, cc.log will print in console.
   2 - cc.error, cc.assert, cc.warn will print in console.
   3 - cc.error, cc.assert will print in console.
   4 - cc.error, cc.assert, cc.warn, cc.log will print on canvas, available only on web.
   5 - cc.error, cc.assert, cc.warn will print on canvas, available only on web.
   6 - cc.error, cc.assert will print on canvas, available only on web.
   
2. showFPS
   Left bottom corner fps information will show when "showFPS" equals true, otherwise it will be hide.
   
3. exposeClassName
   Expose class name to chrome debug tools, the class intantiate performance is a little bit slower when exposed.
   
4. frameRate
   "frameRate" set the wanted frame rate for your game, but the real fps depends on your game implementation and the running environment.
   
5. id
   "gameCanvas" sets the id of your canvas element on the web page, it's useful only on web.
   
6. renderMode
   "renderMode" sets the renderer type, only useful on web :
   0 - Automatically chosen by engine
   1 - Forced to use canvas renderer
   2 - Forced to use WebGL renderer, but this will be ignored on mobile browsers
   
7. scenes
   "scenes" include available scenes in the current bundle.
   
   Please DO NOT modify this object directly, it won't have any effect.
   

Methods

onStart

Callback when the scripts of engine have been load.

setFrameRate

Set frameRate of game.

Parameters

• frameRate Number

step

Run the game frame by frame.

pause

Pause the game main loop. This will pause: game logic execution, rendering process, event manager, background music and all audio effects. This is different with cc.director.pause which only pause the game logic execution.

resume

Resume the game from pause. This will resume: game logic execution, rendering process, event manager, background music and all audio effects.

isPaused

Check whether the game is paused.

restart

Restart game.

end

End game, it will close the game window

prepare

Prepare game.

Parameters

• cb Function

run

Run game with configuration object and onStart function.

Parameters

• config Object | Function Pass configuration object or onStart function
• onStart Function function to be executed after game initialized

addPersistRootNode

Add a persistent root node to the game, the persistent node won't be destroyed during scene transition.
The target node must be placed in the root level of hierarchy, otherwise this API won't have any effect.

Parameters

• node Node The node to be made persistent

removePersistRootNode

Remove a persistent root node.

Parameters

• node Node The node to be removed from persistent node list

isPersistRootNode

Check whether the node is a persistent root node.

Parameters

• node Node The node to be checked

on

Register an callback of a specific event type on the EventTarget.

Parameters

• type String A string representing the event type to listen for.
• callback Function The callback that will be invoked when the event is dispatched.

                         The callback is ignored if it is a duplicate (the callbacks are unique).
  

  • event Event event
• target Object The target (this object) to invoke the callback, can be null
• useCapture Boolean When set to true, the capture argument prevents callback

                         from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE.
                         When false, callback will NOT be invoked when event's eventPhase attribute value is CAPTURING_PHASE.
                         Either way, callback will be invoked when event's eventPhase attribute value is AT_TARGET.
  

Examples

node.on(cc.Node.EventType.TOUCH_END, function (event) {
    cc.log("this is callback");
}, node);

off

Removes the listeners previously registered with the same type, callback, target and or useCapture, if only type is passed as parameter, all listeners registered with that type will be removed.

Parameters

• type String A string representing the event type being removed.
• callback Function The callback to remove.
• target Object The target (this object) to invoke the callback, if it's not given, only callback without target will be removed
• useCapture Boolean Specifies whether the callback being removed was registered as a capturing callback or not.

                         If not specified, useCapture defaults to false. If a callback was registered twice,
                         one with capture and one without, each must be removed separately. Removal of a capturing callback
                         does not affect a non-capturing version of the same listener, and vice versa.
  

Examples

// register touchEnd eventListener
var touchEnd = node.on(cc.Node.EventType.TOUCH_END, function (event) {
    cc.log("this is callback");
}, node);
// remove touch end event listener
node.off(cc.Node.EventType.TOUCH_END, touchEnd, node);
// remove all touch end event listeners
node.off(cc.Node.EventType.TOUCH_END);

targetOff

Removes all callbacks previously registered with the same target (passed as parameter). This is not for removing all listeners in the current event target, and this is not for removing all listeners the target parameter have registered. It's only for removing all listeners (callback and target couple) registered on the current event target by the target parameter.

Parameters

• target Object The target to be searched for all related listeners

once

Register an callback of a specific event type on the EventTarget, the callback will remove itself after the first time it is triggered.

Parameters

• type String A string representing the event type to listen for.
• callback Function The callback that will be invoked when the event is dispatched.

                         The callback is ignored if it is a duplicate (the callbacks are unique).
  

  • event Event event
• target Object The target (this object) to invoke the callback, can be null
• useCapture Boolean When set to true, the capture argument prevents callback

                         from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE.
                         When false, callback will NOT be invoked when event's eventPhase attribute value is CAPTURING_PHASE.
                         Either way, callback will be invoked when event's eventPhase attribute value is AT_TARGET.
  

Examples

node.once(cc.Node.EventType.TOUCH_END, function (event) {
    cc.log("this is callback");
}, node);

dispatchEvent

Dispatches an event into the event flow. The event target is the EventTarget object upon which the dispatchEvent() method is called.

Parameters

• event Event The Event object that is dispatched into the event flow

emit

Send an event to this object directly, this method will not propagate the event to any other objects. The event will be created from the supplied message, you can get the "detail" argument from event.detail.

Parameters

• message String the message to send
• detail Any whatever argument the message needs