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XChange | Java library providing a streamlined API | Cryptography library

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kandi X-RAY | XChange Summary

XChange is a Java library typically used in Financial Services, Fintech, Security, Cryptography, Ethereum, Bitcoin applications. XChange has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub, Maven.
XChange is a Java based library providing a simple and consistent API for interacting with a diverse set of crypto currency exchanges.

kandi-support Support

  • XChange has a medium active ecosystem.
  • It has 3451 star(s) with 1818 fork(s). There are 251 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 269 open issues and 1366 have been closed. On average issues are closed in 62 days. There are 33 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of XChange is current.

quality kandi Quality

  • XChange has 0 bugs and 0 code smells.

securitySecurity

  • XChange has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • XChange code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.

license License

  • XChange is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.

buildReuse

  • XChange releases are not available. You will need to build from source code and install.
  • Deployable package is available in Maven.
  • Build file is available. You can build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
  • It has 272038 lines of code, 26008 functions and 4956 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
Top functions reviewed by kandi - BETA

kandi has reviewed XChange and discovered the below as its top functions. This is intended to give you an instant insight into XChange implemented functionality, and help decide if they suit your requirements.

  • Open a connection to the specified uri .
  • Retrieves the list of trades for an account .
  • Translates a list of bipfly transactions to funding records .
  • Create a restricted SSLSocketFactory that can be used to restrict the given configuration .
  • Fetch all open orders
  • Send limit order response
  • Adapts a JsonOrderBook to a OrderBook object .
  • Generate a SHA - 256 signature .
  • Handles messages .
  • Do post exchange .

XChange Key Features

[x] MIT license

[x] consistent API across all implemented exchanges

[x] active development

[x] very minimal 3rd party dependencies

[x] modular components

XChange Examples and Code Snippets

  • REST API
  • Websocket API
  • Maven
  • Problems with moving an enemy towards a character in pygame
  • Acton in for loop not affecting all sprites in a group
  • Property 'value' does not exist for $event.target.value in typescript/angularjs
  • Javascript for a dynamic PDF stamp dialog box not working
  • Parsing Json response value Python
  • Sorting by different data members of a class C++
  • Trying to change image of moving character in every 0.25 seconds PyGame
  • pygame Inputs and movement smoothing
  • Digital signature not visible in Adobe reader but visible in Foxit reader
  • Data frame won't update using observeEvent in Shiny R

REST API

Exchange bitstamp = ExchangeFactory.INSTANCE.createExchange(BitstampExchange.class);
MarketDataService marketDataService = bitstamp.getMarketDataService();
Ticker ticker = marketDataService.getTicker(CurrencyPair.BTC_USD);
System.out.println(ticker.toString());

Community Discussions

Trending Discussions on XChange
  • Problems with moving an enemy towards a character in pygame
  • Acton in for loop not affecting all sprites in a group
  • Cannot set Context in open-xchange
  • Property 'value' does not exist for $event.target.value in typescript/angularjs
  • Javascript for a dynamic PDF stamp dialog box not working
  • PDF Dropdown List that "auto-populates" Fields with values [using PDF X-Change Editor]?
  • Parsing Json response value Python
  • Sorting by different data members of a class C++
  • What is the role of BOOL in the given code?
  • PDF-XChange Editor SDK to merge multiple PDF with VBA (Excel)
Trending Discussions on XChange

QUESTION

Problems with moving an enemy towards a character in pygame

Asked 2022-Jan-01 at 16:02

I am having problems with making a homing algorithm to move an enemy towards a player in a game. For some reason, the algorithm works sometimes, but as you move the player around, the enemy gets to points where it just stops even though there is still a difference between the player x and y variables and the enemy x and y variables (which the code should be applying to the enemy at all times). If you run the code you'll see what I mean.

Here is my code:

import pygame
import sys, os, random
from pygame.locals import *
from pygame import mixer
import math

clock = pygame.time.Clock()

screen_width = 700
screen_height = 700 
screen = pygame.display.set_mode((screen_width, screen_height))

player_rect = pygame.Rect(200, 200, 10, 10)
moving_left = False 
moving_right = False 
moving_down = False 
moving_up = False

hunter_rect = pygame.Rect(500, 500, 48, 60)

player_rect.x = 300 
player_rect.y = 200
while True:
    screen.fill((50, 50, 50))


    #screen.blit(player, (player_rect.x, player_rect.y))
    #screen.blit(hunter, (hunter_rect.x, hunter_rect.y))
    pygame.draw.rect(screen, (255, 255, 255), player_rect)
    pygame.draw.rect(screen, (255, 0, 0), hunter_rect)

    #### getting the change in y and the change in x from enemy to player ###
    ychange = (hunter_rect.y - player_rect.y)/100
    xchange = (hunter_rect.x - player_rect.x)/100   


    hunter_rect.x -= xchange
    hunter_rect.y -= ychange


    if moving_left:
        player_rect.x -= 4
    if moving_right:
        player_rect.x += 4
    if moving_up:
        player_rect.y -= 4
    if moving_down:
        player_rect.y += 4

    for event in pygame.event.get():
        if event.type == QUIT:
            sys.exit()
            pygame.quit()
        if event.type == KEYDOWN:
            if event.key == K_ESCAPE:
                pygame.quit()
                sys.exit()
            if event.key == K_a:
                moving_left = True 
            if event.key == K_d:
                moving_right = True 
            if event.key == K_s:
                moving_down = True
            if event.key == K_w:
                moving_up = True
        if event.type == KEYUP:
            if event.key == K_a:
                moving_left = False 
            if event.key == K_d:
                moving_right = False
            if event.key == K_w:
                moving_up = False 
            if event.key == K_s:
                moving_down = False
    
    pygame.display.update()
    clock.tick(60) 

ANSWER

Answered 2022-Jan-01 at 15:59

Since pygame.Rect is supposed to represent an area on the screen, a pygame.Rect object can only store integral data.

The coordinates for Rect objects are all integers. [...]

The fraction part of the movement gets lost when the movement is add to the position of the rectangle.
If you want to store object positions with floating point accuracy, you have to store the location of the object in separate variables and to synchronize the pygame.Rect object. round the coordinates and assign it to the location (e.g. .topleft) of the rectangle:

hunter_rect = pygame.Rect(500, 500, 48, 60)
hunter_x, hunter_y = hunter_rect.topleft

# [...]
while True:
    # [...]

    hunter_x -= xchange
    hunter_y -= ychange
    hunter_rect.topleft = round(hunter_x), round(hunter_y)

    # [...]

Source https://stackoverflow.com/questions/70549998

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install XChange

You can download it from GitHub, Maven.
You can use XChange like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the XChange component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

Please report any bugs or submit feature requests to XChange's Github issue tracker.

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