cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   MistaGivYaDaBiz
   Member

   Ok, I have this switch statement set up so that the graphics will alternate depending on the direction that is pressed, but what I'm doing now is just not working correctly. If you could take a look at my switch statement and give me your opinion as to why my dpadright.png is always the image displayed no matter what that would be great. I have the switch set up in two different locations for trial and error in my GameplayLayer class and the SneakyJoystick.m and header (it is currently commented out in the SneakyJoystick.m class). This right here is a snippet from my GameplayLayer class:

   // GameplayLayer.m

   #import "GameplayLayer.h"

   @implementation GameplayLayer

   //-(void)dealloc {
   // [leftDPad release];
   // [actionButton release];
   // [super dealloc];
   //}

   -(void)initDPadAndButtons {
   CGSize screenSize = [CCDirector sharedDirector].winSize;
   CGRect dpadBaseDimensions = CGRectMake(0, 0, 100.0f, 100.0f);
   CGRect actionButtonDimensions = CGRectMake(0, 0, 65.0f, 65.0f);

   CGPoint dpadBasePosition;
   CGPoint actionButtonPosition;

   CCLOG(@"Setting up D-Pad and Action Button");

   dpadBasePosition = ccp(screenSize.width * 0.13f,
   screenSize.height * 0.17f);

   actionButtonPosition = ccp(screenSize.width * 0.90f,
   screenSize.height * 0.13f);

   SneakyJoystickSkinnedBase * dpadBase =
   [[[SneakyJoystickSkinnedBase alloc] init] autorelease];

   SneakyJoystick * joystick =
   [[[SneakyJoystick alloc] init] autorelease];

   dpadBase.position = dpadBasePosition;
   dpadBase.backgroundSprite = [CCSprite spriteWithFile:@"dpad.png"];

   // This is what is giving me a lot of trouble
   switch (joystick.currentDirection) { // currentDirection is declared in SneakyJoystick.m
   case 0: // which tells the game which direction is being pressed
   dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpadright.png"];
   CCLOG(@"Altering Direction right");
   break;
   case 1:
   dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpadup.png"];
   CCLOG(@"Altering Direction up");
   break;
   case 2:
   dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpadleft.png"];
   CCLOG(@"Altering Direction left");
   break;
   case 3:
   dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpaddown.png"];
   CCLOG(@"Altering Direction down");
   break;
   default:
   dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpaddefault.png"];
   CCLOG(@"Altering Direction default");
   break;

   }

   //dpadBase.thumbSprite = [CCSprite spriteWithFile:@"dpaddefault.png"];
   dpadBase.joystick = [[SneakyJoystick alloc] initWithRect:dpadBaseDimensions];
   leftDPad = [dpadBase.joystick retain];

   Posted 3 months ago #
2. 

   Dragyn
   Member

   I suspect your problem is that you have your switch statement embedded in your "initDPadAndButtons". As it stands, that means it is only evaluating your switch statement on the initial method call. I suspect tha tthe original initialization value for the SneakyJoystick must be carrying an initial value of 0, which would explain your seeing "dpadright.png" as your graphic.

   I have only used SneakyJoystick a little bit, but a few general things jump out at me:

   * The switch statement should be in an update method of some sort, so it is re-evaluated every loop.

   * The graphics should be put into a sprite sheet, so you can replace the texture instead of creating a new sprite every time.

   * When a user touches the D-Pad, it should probably set a flag, and have your update method that does the image-swap only change the texture when the touch direction changes, so you're not replacing the texture every frame.

   Posted 3 months ago #
3. 

   MistaGivYaDaBiz
   Member

   That makes sense. I believe I do have an update function, so I will have to put it in there and try things out that way. As for the sprite sheet, I've got everything I need for that, so when I see it's working, I'll pop the graphics into one :). Thanks for the reply, it was very helpful.

   Posted 3 months ago #

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