ios gaming with cocos2d
TRANSCRIPT
iOS gaming with cocos2d
Prepared by Ngo Duc Hiep
Copyright 2011 PTT Solution ., JSC. All rights reserved.
Hanoi, May 2011
iOS game engines
Sparrow
Galaxyoolong
cocos2d
iOS game engines
Corona
iTorque
Game salad
Unity
iOS game engines
http://maniacdev.com/2011/01/open-source-and-commercial-ios-game-engine-listings-updated/
http://maniacdev.com/2009/09/the-commercial-iphone-game-engine-comparison-3d-and-2d/
cocos2d games
Tap Pet Hotel: #1 Free
Tap Zoo: #2 Free
Zombie Farm: #6 Free
iStunt 2: #6 Free
cocos2d games
Trainyard: #2 Paid
ZombieSmash: #1 Paid
Air Penguin: #1 Paid
Fishing Frenzy: #7 Paid
cocos2d
App workflow
Loading Home
Leaderboard
Game Play
Settings
App workflow
CCScene
CCDirector: run, push, pop replace scene
[[CCDirector sharedDirector] runWithScene:loading];
[[CCDirector sharedDirector] replaceScene:home];
CCTransition: transition between scenes
CCLayer
CCLayer
Handle event
isTouchEnabled_
isAccelerometerEnabled_
Game controller
Mange game entities - CCNode
CCNode
Renderable item
CCLayer, CCScene are all nodes
Features
Contains another nodes
Schedule timer
Play actions
Position/rotation/scale/contentSize
CCSprite
Sprites
Texture
CCNode: CoordinatecontentSize.width
conte
ntS
ize.h
eig
ht
CCNode: Coordinate
rotation
positio
nanchorPoint
CCNode: Coordinate
CCNode: Transformation
- (CGAffineTransform)nodeToParentTransform;
- (CGAffineTransform)parentToNodeTransform;
- (CGAffineTransform)nodeToWorldTransform;
- (CGAffineTransform)worldToNodeTransform;
- (CGPoint)convertToNodeSpace:(CGPoint)worldPoint;
- (CGPoint)convertToWorldSpace:(CGPoint)nodePoint;
CCNode: Actions
Modify node’s attributes by time
position/rotation/scale/opacity/grid
Interval actions and Instant actions
CCNode: Actions
CCMove_
CCJump_
CCBezier_
CCScale_
CCRotate_
CCFade_
CCNode: Actions
Time alter actions:
• CCEase_
• CCEaseExponential_
• CCEaseSine_
• CCEaseElastic_
• CCEaseBounce_
CCNode: Special actions
CCCallFunc
CCCallBlock
CCPropertyAction
CCFollow
CCSequence
CCSpawn
CCRepeat
CCNode: 3D Effects
CCFlipX3D/CCFlipY3D
CCWaves3D
CCRipple3D
CCSplitRows
…
CCSprite: Animation
CCSprite: Animation
CCNode: Scheduler
-(void) schedule: (SEL) s interval:(ccTime)seconds;
-(void) unschedule: (SEL) s;
-(void) pauseSchedulerAndActions;
-(void) resumeSchedulerAndActions;
Touch Dispathcher
CCTouchDispathcher
-(void) addStandardDelegate:(id) delegate priority:(int)priority;
-(void) addTargetedDelegate:(id) delegate priority:(int)priority swallowsTouches:(BOOL)swallowsTouches;
-(void) removeDelegate:(id) delegate;
Box2D
Features
Rigid body Fixture: rectangle, circle, poligon
Joint
Contact filter
Contact listener
Simulate
world->Step(dt);
cocos2d Box2D
Body, joint, fixture user data
for (b2Body* b = world->GetBodyList(); b; b = b->GetNext())
{
if (b->GetUserData() != NULL) {
CCSprite *actor = (CCSprite*)b->GetUserData();
actor.position = CGPointMake( b->GetPosition().x , b->GetPosition().y);
actor.rotation = -b->GetAngle() * 180 / M_PI;
}
}
Car
Cocos2d
ccCarBody
ccCarWheel1
ccCarWhell2
Box2D
b2CarBody
b2CarWheel1
b2CarWhell2
b2CarJoint1
b2CarJoint2
cocos2d+ext
CCNode+ext
Transform
- (CGAffineTransform) nodeToNodeTransform:
(CCNode *) node;
- (CGAffineTransform) nodeFromNodeTransform:
(CCNode *) node;
CCNode+ext
Transform
Collision
- (CGRect) rect;
- (BOOL) isCollideWithNode:(CCNode *) node;
CCNode+ext
Transform
Collision
Containing
- (BOOL) containsPoint:(CGPoint) loc;
- (BOOL) containsTouch:(UITouch *) touch;
CCSprite+ext - (CCAction *) animateFramesWithKey:(NSString *) key
startIndex:(int) start
endIndex:(int) end
duration:(float) duration
reverse:(BOOL) reverse
forever:(BOOL) forever;
CCComponent
Independent, portable
States control
Data driven
Callbacks
Physics support
Composition
CCComponent
Data
Texture file
Texture def file
Component def fileStatesChilds
CCComponent
States
Animate frames
Rotate
Scale
Fade
CCComponent
Lion_jump_1.png
Lion_jump_4.pngLion_jump_3.png
Lion_jump_2.png
CCComponent
Lion “jump” state:
key=Lion_jump_
type=frame
startframe=1
endframe=4
duration=0.1
forever=NO
lion.state = @”jump”;
CCComponent
- (void) setState:(NSString *) state;
- (void) setState:(NSString *) state target:(NSString *) target selector:(SEL) selector;
- (void) spawnStates:(NSString *) state1,…;
- (void) setStateSequence:(NSString *) state1, …;
CCLayer+ext
Actors group addChild:(CCNode *) child group:(int) gid; removeChild:(CCNode *) child group:(int) gid;
CCLayer+ext
Contacts listener addContactListenerBetweenGroup:(int) g1 andGroup:(int)
g2 selector:(SEL) listener;
- (void) hero:(Hero *) hero collideWith:(Bullet *) bullet{
hero.blood -= bullet.effect;
[bullet explode];
}
CCLayer+ext
Touch helper - (CGPoint) pointForTouches:(NSSet *) touches; - (CGPoint) pointForTouch:(UITouch *) touch; - (CCNode *) getActorAtPoint:(CGPoint) pos; - (CCNode *) getActorAtTouch:(UITouch *) touch;
Tools
Texture: texturetool, TexturePacker, Zwoptex
Tile map editor: Tiled
SVG editor: Inkscape, svg-edit Level design
Particle: Particle Designer
Font editor: Hiero
Audio: Audacity
3D: Blender
Learning resources
http://cs193p.stanford.edu
https://developer.apple.com/itunes/?destination=adc.apple.com.4092414566
http://www.71squared.com/
http://www.raywenderlich.com/
http://iphonedevelopment.blogspot.com/
http://maniacdev.com
http://iphonedev.net/
http://www.learn-cocos2d.com/
http://cocoawithlove.com/
https://github.com/hiepnd
Demo & QA