How to move background in cocos 2d

Question

Hi, I want to develop a game like "Doodle jump". But I have some problems with the following functions -

1.How to move the background scene / image.

2. How to detect a collision between an object. He needs a physics engine like box2d or I just have to use manual collision.

3. What should be the size of the background image.

4. Actually, I have no idea how the background moves. So I need an explanation from someone.

Answer 1

• Background motion A) You can create a TMX Tilemap and then make a very tall Tiled-Map. B) You can create one texture and then encode texture coordinates, rather than moving it.

• . "Point in Boundingbox" "Rect in Rect". cocos2d: http://www.anima-entertainment.de/?p=262

• , 2 . (960x640 ), 1024x1024. . (, 512x512). TMX.

• CCTMXTiledMap * tmxNode = [CCTMXTiledMap tiledMapWithGMXFile:@"Level.tmx"];

  // lets say you want to move it 50 pixels down in 1 second :

  [tmxNode runAction:[CCMoveBy actionWithDuration:1.0 position:ccp(0,-50)];

  tilemap: http://www.mapeditor.org/

Answer 2

cocos2d tilemap. TileMapTest.h TileMapTest.m

Answer 3

, .

http://www.raywenderlich.com/2343/how-to-drag-and-drop-sprites-with-cocos2d

screen movement using pan recognizer