(No. 00004) implementing the brick-hitting game for iOS (13th): It is scalable and I am a golden hoop (bottom )!

(No. 00004) implementing the brick-hitting game for iOS (13th): It is scalable and I am a golden hoop (bottom )!

 

Prepare materials for shortening the bounce stick

Similar to the previous article, we have developed a material that shortens the size of the rebound rod.

Open SpriteBuilder, create the StickShorter. ccb file, and draw its sprite frame and physical object as follows:

Vc/y0rK74bHktPMs1eK + zbK7ysfO0sPHz + vSqrXEwcsuPC9wPg0KPGgyIGlkPQ = "Create a shortened item Star"> Create a shortened item star

We use red stars to shorten the item, so spawStar writes the following:

case brkColorRed:            star = [Star starWithType:starTypeStickShorter];            break;

In GameScene. m, add the following code to the code for the collision between stars and bounce Rods:

case starTypeStickShorter:            @synchronized(self){                [self scheduleBlock:^(CCTimer *timer){                    [Star doStickShorterWork:self.stickInGameScene];                } delay:0];            }            break;

Now, let's go back to Star. m and add the doStickShorterWork method:

+(void)doStickShorterWork:(Stick *)stick{    GameScene *gameScene = [GameScene sharedGameScene];    CCPhysicsNode *physicsWorld = (CCPhysicsNode*)stick.parent;    @synchronized(gameScene){        if ([stick.name isEqualToString:@stickShorter]) {            return;        }        if ([stick.name isEqualToString:@stickLonger]) {            Stick *stickNormal = [Stick stickNormal];            stickNormal.position = stick.position;            [stick removeFromParent];            //[physicsWorld removeChild:stick cleanup:YES];            [physicsWorld addChild:stickNormal];            gameScene.stickInGameScene = stickNormal;            return;        }    }    CGPoint position = stick.position;    __block Stick *stickShorter;    @synchronized(gameScene){        stickShorter = [Stick stickShorter];        [stick removeFromParent];        //[physicsWorld removeChild:stick cleanup:YES];        stickShorter.position = position;        [physicsWorld addChild:stickShorter];        stickShorter.visible = NO;        gameScene.stickInGameScene = stickShorter;        CCSprite *stickNode = (CCSprite*)[CCBReader load:@Elements/StickNode];        stickNode.position = stickShorter.position;        [gameScene addChild:stickNode z:50];        CCActionScaleTo *shorterAction = [CCActionScaleTo actionWithDuration:0.4f scaleX:0.5f scaleY:1.0f];        CCActionCallBlock *blk = [CCActionCallBlock actionWithBlock:^{            [stickNode removeFromParent];            stickShorter.visible = YES;        }];        CCActionSequence *seq = [CCActionSequence actions:shorterAction,blk,nil];        [stickNode runAction:seq];    }    [stickShorter scheduleBlock:^(CCTimer *timer){        @synchronized(gameScene){            Stick *stickNormal = [Stick stickNormal];            stickNormal.position = stickShorter.position;            [stickShorter removeFromParent];            [physicsWorld addChild:stickNormal];            gameScene.stickInGameScene = stickNormal;        }    } delay:10];}

You can compare it with the variable-length code, which is basically the same.

Compile and run the game as follows:

You can add more special effects in shortening and increasing length. Open the brain hole, kids shoes ;)