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）
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//
// UiNumRoll.h
// WheelScore
//
// Created by 周海锋 on 12-4-8.
// Copyright 2012年 CJLU. All rights reserved.
//
#import
#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
#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
demo的下载地址：
