RetinaDisplay mode is enabled ONLY if you want to use HighRes images on an iPhone4. Remember that an iPhone4 also works in “low res” mode.
// Add this code in your Application Delegate, right after initializing the director
// Director Initialization
[director setOpenGLView:glView];
// Enables High Res mode (Retina Display) on iPhone 4 and maintains low res on all other devices
if( ! [director enableRetinaDisplay:YES] )
CCLOG(@”Retina Display Not supported”);
StatFs stat = new StatFs(Environment.getExternalStorageDirectory().getPath());
long bytesAvailable = (long)stat.getBlockSize() * (long)stat.getAvailableBlocks();
long megAvailable = bytesAvailable / (1024 * 1024);
Log.e("","Available MB : "+megAvailable);
Returns the direction the device is traveling in degrees clockwise from true North. If negative, the direction is invalid.
Syntax:
event.direction
Row Locking in MySQL can be performed in two ways.
1) SELECT … FOR UPDATE
Any lock placed with the FOR UPDATE will not allow other transactions to read, update or delete the row. Other transaction can read this rows only once first transaction get
commit or rollback.
Example:
SELECT * FROM tblTest WHERE id=100 FOR UPDATE;
2) LOCK IN SHARE MODE
Any lock placed with LOCK IN SHARE MODE will allow other transaction to read the locked row but it will not allow other transaction to update or delete the row. Other transaction can update or delete the row once the first transaction gets commit or rollback.
Example:
SELECT * FROM tblTest WHERE id=100 LOCK IN SHARE MODE;
Here once the first transaction commit or rollback then second transaction which is waiting for first transaction to finish will get an updates row rather than the old one.
This way we can serve the fresh data to the user and can handle the concurrent request in better way.
//To get a file
local path = system.pathForFile( "data.txt", system.DocumentsDirectory )
//To read from file
local file = io.open( path, "r" ) if file then -- nil if no file found local contents = file:read( "*a" ) print( "Contents of " .. path .. "\n" .. contents ) io.close( file ) end
//To write in a file
file = io.open( path, "w" )
local numbers = {1,2,3,4,5,6,7,8,9}
file:write( "Feed me data!\n", numbers[1], numbers[2], "\n" )
for _,v in ipairs( numbers ) do file:write( v, " " ) end
file:write( "\nNo more data\n" )
io.close( file )
void CCSpriteFrameCache::addSpriteFramesWithFile:(NSString *plist)
Adds multiple Sprite Frames from a plist file. A texture will be loaded automatically.
The texture name will composed by replacing the .plist suffix with .png.
If you want to use another texture, you should use the method,
” addSpriteFramesWithFile:texture ”
id CCTimer::initWithTarget:selector:( id t, [selector] SEL s)
Initializes a timer with a target and a selector.
void CCTimer::update:( ccTime dt)
triggers the timer
Sample code to add a horizontal carousel inside a panel in Sencha touch is given below.
test.views.MenuTypeView = Ext.extend(Ext.Panel, {
fullscreen: true,
layout: ‘card’,
cardSwitchAnimation: ‘slide’,
initComponent: function () {
this.backButton = new Ext.Button({
text : ‘Home’,
ui : ‘back’,
handler : this.backButtonTap,
scope : this
});
this.saveButton = new Ext.Button({
text : ‘Save’,
ui : ‘action’,
handler : this.saveButtonTap,
scope : this
});
this.carousel = new Ext.Carousel({
fullscreen: true,
defaults: {
styleHtmlContent: true
},
items: [
{
id : 'idOne',
html : 'IMAGE-1 MENU ITEMS',
style : 'background-color: #5E99CC'
}, {
id : 'idTwo',
html : 'IMAGE-2 ICON MENU ITEMS',
style : 'background-color: #759E60'
}, {
id : 'idThree',
html : 'IMAGE-3 TABBED BAR ITEMS'
}, {
id : 'idFour',
html : 'IMAGE-4 TESTING'
}
]
});
this.appCarouselPanel = new Ext.form.FormPanel({
dockedItems : [{
xtype : 'toolbar',
title : 'Select Menu Type',
items : [
this.backButton,
{xtype: 'spacer'},
this.saveButton
]
}],
items :[{
layout: 'hbox',
items: this.carousel
}]
});
this.items = [this.appCarouselPanel];
test.views.MenuTypeView.superclass.initComponent.call(this);
},
saveButtonTap: function () {
console.log(this.carousel.getActiveItem().getId());
},
backButtonTap: function () {
}
});
In video games, hearing the same sample over and over gets extremely fatiguing. One way around that is to subtly vary the playback rate a bit every time. This example varies the pitch by +/- 200 cents from the default value:
Example:
laserSound = audio.loadSound(“laserBlast.wav”)
pitchVariation = (math.random(400) – 200)
laserChannel = audio.play(laserSound, {pitch=pitchVariation})
In music applications, we are constantly changing the pitch and time of the sample, for any variety of reasons.
Note that I am simply talking about varying the playback of the sample rate of the asset – so if an audio sample plays back with {pitch=-1200}, or an octave lower, then it would also playback twice as slowly. To maintain a sample’s duration while varying the pitch, or vice versa, involves some heavy DSP and is probably not worth the effort.
NSString* deviceName= [[UIDevice currentDevice] name]; NSLog(@"deviceName ---> %@",deviceName);
