【IOS】仿捕鱼达人的金币滚动显示

              原文地址：http://blog.csdn.net/toss156/article/details/7439769】

今天给大家带来一个模仿捕鱼达人中，金币的滚动显示。（部分代码参考了cocoachina上一个C++版的）

 //
 //  UiNumRoll.h
 //  WheelScore
 //
 //  Created by 周海锋 on 12-4-8.
 //  Copyright 2012年 CJLU. All rights reserved.
 //

 #import <Foundation/Foundation.h>
 #import "cocos2d.h"

 #define NUM_HEIGHT 20
 #define NUM_WIDTH  20

 typedef enum{
     NumStyleNormal,
     NumStyleSameTime,
 }NumStyle;

 @interface UINumber : CCSprite {
     NumStyle m_style;       //滚动样式
     int m_num;              //显示的数字
     int m_nPosCur;          //当前的位置
     int m_nPosEnd;          //结束的位置
     int m_nMoveLen;         //每次移动的位置
     CCTexture2D *m_texture; //数字的texture
 }

 @property(nonatomic,retain) CCTexture2D *m_texture;
 -(id) initWithStyle:(NumStyle) style;
 -(void) setNumber:(int) num;
 -(void) onRollDown:(ccTime) dt;
 -(void) onRollUP:(ccTime) dt;
 -(void) setup;
 @end

 //
 //  UiNumRoll.m
 //  WheelScore
 //
 //  Created by 周海锋 on 12-4-8.
 //  Copyright 2012年 CJLU. All rights reserved.
 //

 #import "UINumber.h"
 @implementation UINumber
 @synthesize m_texture;

 /*
  * init 初始化
  */
 -(id) init
 {
     if( (self=[super init])) {
         m_texture = NULL;
         m_style = NumStyleNormal;
         m_num = 0;
         m_nPosCur = 0;
         m_nPosEnd = 0;
         [self setup];
     }
     return self;
 }

 /*
  * initWithStyle 初始化
  */
 -(id) initWithStyle:(NumStyle) style
 {
     if( (self=[super init]))
     {
         m_texture = NULL;
         m_style = style;
         m_num = 0;
         m_nPosCur = 0;
         m_nPosEnd = 0;
         [self setup];
     }
     return self;
 }

 /*
  * setup 设置texture
  */
 -(void)setup
 {
     UIImage *image = [UIImage imageNamed:@"number.png"];
     m_texture = [[CCTexture2D alloc]initWithImage:image];
     CCSpriteFrame *frame = [CCSpriteFrame frameWithTexture:m_texture rect:CGRectMake(0, 0, NUM_WIDTH, NUM_HEIGHT)];
     [self setDisplayFrame:frame];
 }

 /*
  * setNumber 设置显示的数字
  */
 -(void) setNumber:(int) num
 {
     m_nPosCur = NUM_HEIGHT * m_num;
     m_nPosEnd = NUM_HEIGHT * num;
     if (NumStyleNormal == m_style) {
         m_nMoveLen = 4;
     }
     else if (NumStyleSameTime == m_style) {
         m_nMoveLen = (m_nPosEnd-m_nPosCur)/20;
     }

     if (m_num > num) {
         [self schedule:@selector(onRollUP:) interval:0.03];
     }
     else {
         [self schedule:@selector(onRollDown:) interval:0.03];
     }
     m_num = num;
 }

 /*
  * onRollDown 向下滚动
  */
 -(void) onRollDown:(ccTime) dt
 {
     m_nPosCur += m_nMoveLen;
     if (m_nPosCur >= m_nPosEnd) {
         m_nPosCur = m_nPosEnd;
         [self unschedule:@selector(onRollDown:)];
     }

     CCSpriteFrame *frame = [CCSpriteFrame frameWithTexture:m_texture rect:CGRectMake(0, m_nPosCur, NUM_WIDTH, NUM_HEIGHT)];
     [self setDisplayFrame:frame];
 }


 /*
  * onRollUP 向上滚动
  */
 -(void) onRollUP:(ccTime) dt
 {
     m_nPosCur -= 4;
     if (m_nPosCur <= m_nPosEnd) {
         m_nPosCur = m_nPosEnd;
         [self unschedule:@selector(onRollUP:)];
     }

     CCSpriteFrame *frame = [CCSpriteFrame frameWithTexture:m_texture rect:CGRectMake(0, m_nPosCur, NUM_WIDTH, NUM_HEIGHT)];
     [self setDisplayFrame:frame];
 }

 -(void)dealloc
 {
     [self unscheduleAllSelectors];
     [m_texture release];
     [super dealloc];
 }
 @end

 //
 //  UIRollNum.h
 //  WheelScore
 //
 //  Created by 周海锋 on 12-4-8.
 //  Copyright 2012年 CJLU. All rights reserved.
 //

 #import <Foundation/Foundation.h>
 #import "cocos2d.h"
 #import "UINumber.h"

 @interface UIRollNum : CCSprite {
     int m_nNumber;              //显示的数字
     int m_maxCol;               //最大显示位数
     NSMutableArray *numArray;   //存放每个数字的数组
     CGPoint m_point;            //坐标
     bool  zeroFill;             //是否开启0填充
     NumStyle style;             //滚动样式
 }

 @property (nonatomic,retain) NSMutableArray *numArray;
 @property (nonatomic) CGPoint m_point;
 @property (nonatomic) NumStyle style;

 -(void) rebuildEffect;
 -(void) clearEffect;
 -(int) getNumber;
 -(void) setNumber:(int)num;
 @end

 //
 //  UIRollNum.m
 //  WheelScore
 //
 //  Created by 周海锋 on 12-4-8.
 //  Copyright 2012年 CJLU. All rights reserved.
 //

 #import "UIRollNum.h"
 @implementation UIRollNum
 @synthesize numArray,m_point,style;

 /*
  * init 初始化
  */
 -(id) init
 {
     if (self = [super init]) {
         m_nNumber = 0;
         m_maxCol = 6;
         numArray =[[NSMutableArray alloc] init];
         zeroFill = YES;
         style = NumStyleNormal;
     }
     return self;
 }

 /*
  * getNumber 获取显示的数字
  */
 -(int) getNumber
 {
     return m_nNumber;
 }

 /*
  * setNumber 设置显示的数字
  * num int 设置的数字
  */
 -(void) setNumber:(int)num
 {
     if (m_nNumber != num) {
         m_nNumber = num;
        [self rebuildEffect];
     }
 }

 /*
  * rebuildEffect 重新设置每位数字
  */
 -(void) rebuildEffect
 {
     [self clearEffect];

     int i=0;
     int num = m_nNumber;
     while (1) {
         if (num<=0) {
             if(m_maxCol<=i && zeroFill)
             break;
         }
         int showNum = num%10;

         UINumber* pNumber = [[UINumber alloc]initWithStyle:style];
         [numArray addObject:pNumber];
         [pNumber setNumber:showNum];
         [pNumber setPosition:CGPointMake(m_point.x - i*NUM_WIDTH, m_point.y)];
         [pNumber setAnchorPoint:CGPointMake(1, 0.5)];
         [self addChild:pNumber z:100];

         i++;
         num = num/10;
     }
 }

 /*
  * rebuildEffect 清楚每位数字
  */
 -(void) clearEffect
 {
     for(int i=0;i<[numArray count];i++) {

         UINumber* pNumber = (UINumber *)[numArray objectAtIndex:i];
         [self removeChild:pNumber cleanup:YES];
     }
     [numArray removeAllObjects];
 }

 -(void)dealloc
 {
     [numArray release];
      [super dealloc];
 }

 @end