【源码】模拟炮弹动画效果,平移动画

本程序是模拟子弹无限的弹出平移的动画效果

知识点:(难点)

0,masony自适应布局(下载地址:https://github.com/Masonry/Masonry)

1,循环创建等间距的View

2,向可变数组中添加和取出这些View

3,定时器

4,循环执行

5,循环执行平移

6,加速和减速

感谢金JML小姐的无私帮助,接下来直接上代码:

// ViewController.m

// 模拟炮弹的实现

// Created by WBapple on 16/8/23.

#import "ViewController.h"

//适配

#import "Masonry.h"

#define MAS_SHORTHAND

#define MAS_SHORTHAND_GLOBALS

//按照iPhone6屏幕尺寸适配

// 转换宽度像素，将1080P转换成750P

#define changePixelW(P) (P / 1080.0) * 750.0

// 转换高度像素，将1080P转换成750P

#define changePixelH(P) (P / 1920.0) * 1334.0

// 将像素转换为点-宽度

#define pixelToPonitW(P) changePixelW(P) / 2.0

// 将像素转换为点-高度

#define pixelToPonitH(P) changePixelH(P) / 2.0

// 屏幕大小

#define kScreen [[UIScreen mainScreen] bounds]

// 屏幕宽度

#define kScreenW [[UIScreen mainScreen] bounds].size.width

// 屏幕高度

#define kScreenH [[UIScreen mainScreen] bounds].size.height

// 适配屏幕高度

#define FITHEIGHT(H)

(pixelToPonitH(H)) / 667.0 * ([UIScreen mainScreen].bounds.size.height)

// 适配屏幕宽度

#define FITWIDTH(W)

(pixelToPonitW(W)) / 375.0 * ([UIScreen mainScreen].bounds.size.width)

// 根据设备型号设置字体大小

#define iPhone6 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(750, 1334), [[UIScreen mainScreen] currentMode].size) : NO)

#define iPhone6P ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(1242, 2208), [[UIScreen mainScreen] currentMode].size) : NO)

//字体大小适配

#define pixelToFontsize(P) (iPhone6P ? (P / 2.0 / 96.0 * 72.0) : (iPhone6 ? (P / 1.2 / 2.0 / 96.0 * 72.0) : (P / 1.3 / 2.0 / 96.0 * 72.0)))

// 将像素转换为点-圆角

#define svCornerRadius(P) changePixelW(P) / 2.0

// 状态栏的高度

#define statusBarH [[UIApplication sharedApplication] statusBarFrame].size.height

//电池栏高度

#define StatusBarH [UIApplication sharedApplication].statusBarFrame.size.height

//导航栏高度

//#define NavBarH [UINavigationBar appearance].frame.size.height

#define NavBarH self.navigationController.navigationBar.height

@interface ViewController ()

@end

@implementation ViewController {

NSMutableArray* array;

UIView* view;

BOOL jay;

float speed;

}

- (void)viewDidLoad

{

UILabel* label = [[UILabel alloc] initWithFrame:CGRectMake(100, 0, 200, 200)];

label.text = @"点击屏幕出现子弹";

[self.view addSubview:label];

UIButton* button = [[UIButton alloc] initWithFrame:CGRectMake(30, 550, 150, 40)];

[button setTitle:@"加速" forState:UIControlStateNormal];

button.backgroundColor = [UIColor redColor];

button.titleLabel.font = [UIFont systemFontOfSize:pixelToFontsize(45)];

button.layer.cornerRadius = svCornerRadius(12);

[button addTarget:self

action:@selector(jiasu)

forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button];

UIButton* button2 = [[UIButton alloc] initWithFrame:CGRectMake(200, 550, 150, 40)];

[button2 setTitle:@"减速" forState:UIControlStateNormal];

button2.backgroundColor = [UIColor blueColor];

button2.titleLabel.font = [UIFont systemFontOfSize:pixelToFontsize(45)];

button2.layer.cornerRadius = svCornerRadius(12);

[button2 addTarget:self

action:@selector(jiansu)

forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:button2];

//创建可变数组

array = [[NSMutableArray alloc] init];

[super viewDidLoad];

//创建炮弹

for (int i = 0; i < 1000; i++) {

view = [[UIView alloc] init];

view.backgroundColor = [UIColor redColor];

[self.view addSubview:view];

[view mas_makeConstraints:^(MASConstraintMaker* make) {

make.height.mas_equalTo(FITHEIGHT(30));

make.width.mas_equalTo(FITHEIGHT(30));

make.left.mas_equalTo(self.view.mas_left).with.offset(-FITHEIGHT(60000) + FITHEIGHT(60) * i);

make.centerY.equalTo(self.view);

}];

//把创建的View逐一添加到可变数组中

[array addObject:view];

}

//创建定时器

NSTimer* timer = [NSTimer timerWithTimeInterval:0.1

target:self

selector:@selector(changeViewframe)

userInfo:nil

repeats:YES];

// runloop循环执行

[[NSRunLoop currentRunLoop] addTimer:timer forMode:NSDefaultRunLoopMode];

//speed默认值

speed = 10;

}

- (void)changeViewframe

{

CGAffineTransform ttransform;

for (int i = 0; i < array.count; i++) {

UIImageView* image = array[i];

if (!jay) {

ttransform = CGAffineTransformTranslate(image.transform, FITWIDTH(speed), 0);

image.transform = ttransform;

jay = YES;

}

else {

ttransform = CGAffineTransformTranslate(image.transform, FITWIDTH(speed), 0);

image.transform = ttransform;

jay = NO;

}

- (void)jiasu

{

speed += 10;

}

- (void)jiansu

{

speed -= 10;

}

- (void)didReceiveMemoryWarning

{

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end