position

how do i determine a sprite's position in pygame?

由 扶醉桌前 提交于 2019-12-23 05:22:09
问题 I'm new to pygame and am making a zombie running game. I am controlling the human with the arrow keys and I would like to have a zombie run toward the player's position when the zombie is first created. I am unsure how to determine the players position to set the zombie in the correct direction. The zombie doesn't have to follow the human, just head in the direction of the players position when the zombie is created. class Human(pygame.sprite.Sprite): def __init__(self): pygame.sprite.Sprite.

How to detect which element is on the center of the screen with scroll position?

由 拥有回忆 提交于 2019-12-23 04:53:48
问题 I want to detect which element is visible on the screen when scrolling down/up. I have to set as active menu item on the menu which targets that element. // must have a page class $('.page').each(function(){ $positionData[$(this).attr('id')] = $(this).offset().top; }); $(document).scroll(function(){ var $position = $(this).scrollTop(); if($position > $height && !$body.hasClass('scrolled')) { $body.addClass('scrolled'); //detech the scroll is between an element offset } else if($position <

字符串操作-分解路径笔记

由 徘徊边缘 提交于 2019-12-23 03:58:12
字符串操作-分解路径笔记 一、字符串操作： 代码引用 """ 字符串处理 """ if __name__ == '__main__': """ 统计子串出现的次数 """ str1 = "abc123abcdef987poiabcabab" print("子串统计", str1.count('abc')) """ 空白删除 \r、\n、\t显示效果都是空白的 """ str2 = " \t \r\n abc \r\n " print("空白删除", '[' + str2.lstrip() + ']') print("空白删除", '[' + str2.rstrip() + ']') print("空白删除", '[' + str2.strip() + ']') """ 大小写转换 """ str3 = "A Na Ta No Ko To Ga Su Ki De Su" print("大小写", str3.upper()) print("大小写", str3.lower()) """ 查找字符串所在位置 """ str4_1 = "ABC456ABC101112ABC" str4_2 = "abc456abc101112abc" print("查找", str4_1.find("abc")) print("查找", str4_2.find("abc")) print("查找",

Is position: static identical to position: relative, with no other properties specified?

由 时光总嘲笑我的痴心妄想 提交于 2019-12-23 03:43:11
问题 Is position:static equivalent to position: relative with none of the top, bottom, right, or left properties specified? I though of this because an element with postion: absolute be relative to the first element that does NOT have postion: static . It seems arbitrary to make an element with position: relative , which will behave identically to a position: static if no other properties are used. Figured I might be missing something about static vs relative . Thanks! 回答1: The answer is no , both

Find start and end positions of all occurrences within a string in Python

由 旧时模样 提交于 2019-12-23 02:20:23
问题 If you have a sequence: example='abcdefabcdefabcdefg' and your searching for: searching_for='abc' what function would give you a list with all the positions? positions=[(0,2),(6-8),(12-14)] i created a window list that splits 'example' by 3 so it goes from 'abc','bcd','cde' windows=['abc', 'bcd', 'cde', 'def', 'efa', 'fab', 'abc', 'bcd', 'cde', 'def', 'efa', 'fab', 'abc', 'bcd', 'cde', 'def'] and used a for loop for i in windows: if i == 'abc': thats where i get stuck . . . 回答1: You can use

get the position of picturebox that has been clicked

由 霸气de小男生 提交于 2019-12-23 02:18:21
问题 I want to get the position of the picturebox that has been cliked by the mouse,but i don't know how?? I mean the position of picturebox not the form that the picturebox on it. thanks. 回答1: MUGAN's close. The Point you'll get from MouseEventArgs is the "screen" point of the mouse, where 0,0 is the top left of the entire monitor or desktop (however you want to think of it). To convert that to a "client" point within the PictureBox control, where 0,0 is the top left of that PictureBox, you'll

PTA6-12 二叉搜索树的操作集 (30分)

由 情到浓时终转凉″ 提交于 2019-12-23 02:08:20
本题要求实现给定二叉搜索树的5种常用操作。 函数接口定义： BinTree Insert ( BinTree BST , ElementType X ) ; BinTree Delete ( BinTree BST , ElementType X ) ; Position Find ( BinTree BST , ElementType X ) ; Position FindMin ( BinTree BST ) ; Position FindMax ( BinTree BST ) ; 其中 BinTree 结构定义如下： typedef struct TNode * Position ; typedef Position BinTree ; struct TNode { ElementType Data ; BinTree Left ; BinTree Right ; } ; 函数 Insert 将 X 插入二叉搜索树 BST 并返回结果树的根结点指针； 函数 Delete 将 X 从二叉搜索树 BST 中删除，并返回结果树的根结点指针；如果 X 不在树中，则打印一行 Not Found 并返回原树的根结点指针； 函数 Find 在二叉搜索树 BST 中找到 X ，返回该结点的指针；如果找不到则返回空指针； 函数 FindMin 返回二叉搜索树 BST 中最小元结点的指针； 函数

replacement of string using regular expression at Xth position intervals (javascript)

由 你说的曾经没有我的故事 提交于 2019-12-22 20:02:32
问题 I would very much appreciate some assistance from the community on replacing a string at xth position intervals, using javascript regex. For example, if the string length is 161 and the replacement text is <br /> , regex would replace the string at the 40th, 80th, 120th, and 160th positions with this replacement text. Is this possible using regex? Thank you very much. 回答1: A method to add <br /> at ever 40th position is by using the following line: string = string.replace(/([\S\s]{40})/g , "

PTA6-10 二分查找 (20分)

由 ぃ、小莉子 提交于 2019-12-22 17:14:43
PTA6-10 二分查找 (20分) 本题要求实现二分查找算法。 函数接口定义： Position BinarySearch ( List L , ElementType X ) ; 其中 list 结构定义如下： typedef int Position ; typedef struct LNode * List ; struct LNode { ElementType Data [ MAXSIZE ] ; Position Last ; /* 保存线性表中最后一个元素的位置 */ } ; L 是用户传入的一个线性表，其中 ElementType 元素可以通过>、==、<进行比较，并且题目保证传入的数据是递增有序的。函数 BinarySearch 要查找 X 在 Data 中的位置，即数组下标（注意：元素从下标1开始存储）。找到则返回下标，否则返回一个特殊的失败标记 NotFound 。 裁判测试程序样例： # include <stdio.h> # include <stdlib.h> # define MAXSIZE 10 # define NotFound 0 typedef int ElementType ; typedef int Position ; typedef struct LNode * List ; struct LNode { ElementType

CSS布局（上）

由 吃可爱长大的小学妹 提交于 2019-12-22 16:41:03
CSS布局（上） /*--> */ /*--> */ 1、CSS布局之display 1.1、dispaly dispaly是CSS中最重要的用于控制布局的属性，每个元素都有一个默认的display，大多数元素的默认值通常是block（块级元素）或inline（行内元素）。 另一个常用的display是none。一些特殊元素的默认值就是它，如script、link等。 1.2 display:none 与 visibility:hidden display设置为none，是不会保存元素本该显示的空间，但是visibility:hidden会保留。 <div style="width: 100px; height: 100px; border: 1px solid red;float:left;"> <span style="display:none;">ABCD</span>EFG </div> <div style="width: 100px; height: 100px; border: 1px solid red;float:left;"> <span style="visibility:hidden;">ABCD</span>EFG </div> ABCD EFG ABCD EFG 1.3、更多的display值 比较常用的有list-item,inline-block
订阅 position