The following creates a gradient object that adds horizontal/vertical linear gradients to rectangle and text objects.
local g = graphics.newGradient(
{ 255, 255, 255 },
{ 200, 200, 200 },
"down" )
-- sets gradient 'g' on rect
local rect = display.newRect( 0, 0, 100, 200 )
rect:setFillColor( g )
-- sets gradient 'g' on text
local text = display.newText("Hello World!", 0, 0, native.systemFont, 16)
text:setTextColor( g )
Add this code in your class:
-(void)newLocalScore {
UIAlertView* dialog = [[UIAlertView alloc] init];
[dialog setDelegate:self];
[dialog setTitle:@"Online Access"];
[dialog setMessage:@"Do you want to connect to the online ranking?"];
[dialog addButtonWithTitle:@"Yes"];
[dialog addButtonWithTitle:@"No"];
[dialog show];
[dialog release];
}
- (void) alertView:(UIAlertView *)alert clickedButtonAtIndex:(NSInteger)buttonIndex
{
if(buttonIndex==0) {
//do stuff
}
}
Add the following lines to the layer class :
self.isAccelerometerEnabled = YES;
[[UIAccelerometer sharedAccelerometer] setUpdateInterval:1/60];
shake_once = false;
Then implement this function in the layer class:
-(void) accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration {
float THRESHOLD = 1.5;
if (acceleration.x > THRESHOLD || acceleration.x THRESHOLD || acceleration.y THRESHOLD || acceleration.z < -THRESHOLD) {
if (!shake_once) {
shake_once = true;
}
}
else {
shake_once = false;
}
}
These effects are like any other action, it is executed by the do: selector.
eg:
// Create an sprite CCSprite *star = [Sprite spriteWithFile:@"star.png"]; // Tell the sprite to execute the Liquid effect [star do: [Liquid actionWithWaves:4 amplitude:20 grid:ccg(10,10) duration:5]]; Like any other grid action,this effect receives the grid parameter. We can adjust the quality of the effect by increasing the size of the grid. // create a Lens3D action id lens = [Lens3D actionWithPosition:cpv(240,160) radius:240 grid:ccg(15,10) duration:8]; // create a Waved3D action id waves = [Waves3D actionWithWaves:18 amplitude:80 grid:ccg(15,10) duration:10]; // create a sequence and repeat it forever [star do: [RepeatForever actionWithAction: [Sequence actions: waves, lens, nil]]];
NSDateFormatter is used to format how date is displayed in Xcode applications.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd 'at' HH:mm"]; The output will be something like this: 2012-03-09 at 04:30
Tiled Maps
There are 2 ways of creating tiled maps in cocos2d.
cocos2d supports the following TMX maps:
Tileddoesn’t support them either)embedded tilesets are supported (i.e., the tileset is embedded, but not its images).CCTMXLayer (which is a subclass of CCSpriteSheet)CCSprite (its parent will be the CCTMXLayer)cocos2d doesn’t support embedded images in tilesets (but requires tilesets themselves to be embedded in the map file). Instead you should create a sprite sheet image (AKA: Texture Atlas) by yourself.
Setting the Tiled preferences
Tell tiled to NOT save the tileset with embedded images:
$ cd bin/tiled-0.7.2/ $ java -jar tiled
Once in tiled, you should do:
How to create a TMX node
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"hexa-test.tmx"]; [self addChild:map];
All the tiles by default will be aliased. If you want to create anti-alias tiles, you should do:
// create a TMX map
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"];
[self addChild:map];
// iterate over all the "layers" (atlas sprite managers)
// and set them as 'antialias'
for( CCTMXLayer* child in [map children] ) {
[[child texture] setAntiAliasTexParameters];
}
How to get/add/delete/modify a tile
To obtain a tile (CCSprite) at a certain coordinate
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"]; CCTMXLayer *layer = [map layerNamed:@"Layer 0"]; CCSprite *tile = [layer tileAt:ccp(0,63)]; tile.anchorPoint = ccp(0.5f, 0.5f); To obtain a tile's GID at a certain coordinate CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"]; CCTMXLayer *layer = [map layerNamed:@"Layer 0"]; unsigned int gid = [layer tileGIDAt:ccp(0,63)];
To set a new tile’s GID’s at a certain coordinate
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"]; CCTMXLayer *layer = [map layerNamed:@"Layer 0"]; [layer setTileGID:gid2 at:ccp(3,y)];
To remove a tile at a certain coordinate
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"]; CCTMXLayer *layer = [map layerNamed:@"Layer 0"]; [layer removeTileAt:ccp(15,15)];
To iterate a Layer
CCTMXTiledMap *map = [CCTMXTiledMap tiledMapWithTMXFile:@"orthogonal-test2.tmx"];
CCTMXLayer *layer = [map layerNamed:@"Layer 0"];
CGSize s = [layer layerSize];
for( int x=0; x<s.width;x++) {
for( int y=0; y< s.height; y++ ) {
unsigned int tmpgid = [layer tileGIDAt:ccp(x,y)];
[layer setTileGID:tmpgid+1 at:ccp(x,y)];
}
}
(void)rotateSourceSprite:(CCSprite*)sourceSprite toFaceTargetSprite:(CCSprite*)targetSprite{
//Calculation
CGPoint difference=ccpSub(sourceSprite.position,targetSprite.position);
CGFloat rotationRadians=ccpToAngle(difference);
CGFloat rotationDegrees=-CC_RADIANS_TO_DEGREES(rotationRadians);
rotationDegrees+=90.0f;
CGFloat rotateByDegrees=rotationDegrees-sourceSprite.rotation;
//animation
CCRotateBy* turnBy=[CCRotateBy actionWithDuration:0.5f angle:rotateByDegrees];
CCEaseIn*ease=[CCEaseIn actionWithAction:turnBy rate:4];
[sourceSprite runAction:ease];
}
-(void)startGame{
// initialising counter
int option;
x1=0;
y1=0;
cloud_tag=100;
if(optionsArray.count > 0)
{
[optionsArray removeAllObjects];
}
if(xarray.count > 0)
{
[xarray removeAllObjects];
}
if(yarray.count > 0)
{
[yarray removeAllObjects];
}
for(i=0;i<5;i++)
{
do {
[self getPosition];
[self check_position];
} while (position_flag==1);
NSLog(@"startFunction %d///////%d",xpos,ypos);
// add positions in arrays
[xarray addObject:[NSString stringWithFormat:@"%d",xpos]];
[yarray addObject:[NSString stringWithFormat:@"%d",ypos]];
clouds[i] = [CCSprite spriteWithFile:@"cloud222.png"];
clouds[i].tag = cloud_tag;
clouds[i].scale=.7;
clouds[i].position = ccp(xpos,ypos);
s2=[clouds[i] contentSize];
[self addChild:clouds[i] z:500];
cloud_tag++;
do {
option=arc4random()%5;
} while ([optionsArray containsObject:[non_repeat_random_numbers objectAtIndex:option]]);
[optionsArray addObject:[non_repeat_random_numbers objectAtIndex:option]];
word=[non_repeat_random_numbers objectAtIndex:option];
label=[CCLabelTTF labelWithString:word fontName:@"Marker Felt" fontSize:28];
label.position=ccp(s2.width/2,s2.height/2);
label.color = ccc3(100,10,255);
clouds[i].userData=word;
[clouds[i] addChild:label];
}
}
-(void)getPosition
{
ypos=arc4random()%300+15;
if(ypos>144)
{
xpos=arc4random()%200+180;
}
else
{
xpos=arc4random()%350+130;
}
return;
}
-(void)check_position
{
int k2=0;
while(k2<[xarray count])
{
x1=[[xarray objectAtIndex:k2] intValue];
y1=[[yarray objectAtIndex:k2] intValue];
if(x1 <= (xpos+50) && x1 >= (xpos-50) && y1<=(ypos+50) && y1>=(ypos-50))
{
position_flag=1;
break;
}
else
{
position_flag=0;
k2++;
}
}
return;
}
Consider a UISegmentedControl object as follows :
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"ON",@"OFF",nil]];
segment.selectedSegmentIndex = 0;
[self changeUISegmentFont:segment]; // Call this method to edit the label of the segment with the UISegmentedControl object as parameter. The method definition is given below.
// Method Definition
-(void) changeUISegmentFont:(UIView*) myView {
if ([myView isKindOfClass:[UILabel class]]) { // Getting the label subview of the passed view
UILabel* label = (UILabel*)myView;
[label setTextAlignment:UITextAlignmentCenter];
[label setFont:[UIFont boldSystemFontOfSize:14]]; // Set the font size you want to change to
}
NSArray* subViewArray = [myView subviews]; // Getting the subview array
NSEnumerator* iterator = [subViewArray objectEnumerator]; // For enumeration
UIView* subView;
while (subView = [iterator nextObject]) { // Iterating through the subviews of the view passed
[self changeUISegmentFont:subView]; // Recursion
}
}
The following code will make the UIImageView round cornered with border to it :
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(42, 2, 55, 26)]; // Creating a UIImageView object imgView.image = [UIImage imageNamed:@"myImage.png"]; // Adding image to the UIImageVIew object imgView.contentMode = UIViewContentModeScaleAspectFill; // Setting the content mode for the UIImageView imgView.clipsToBounds = YES; // For rounded corners: imgView.layer.cornerRadius = 6.0; // Setting the corner radius imgView.layer.masksToBounds = YES; // For enabling masking //For adding border imgView.layer.borderColor = [UIColor whiteColor].CGColor; // Setting the border color imgView.layer.borderWidth = 2.0; // Setting the border width
