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brute

授权协议 EPL-1.0 License

开发语言 C/C++

所属分类游戏/娱乐

软件类型开源软件

地区不详

投递者洪琦

操作系统未知

开源组织无

适用人群未知

软件概览

Brute

A simple and lightweight Entity Component System library for writing games with Clojure or ClojureScript.

The aim of this project was to use basic Clojure building blocks to form an Entity System architecture, and get out of theauthor's way when deciding exactly what approach would best fit their game when integrating with this library.

To that end:

Entities are UUIDs.
The Component type system can be easily extended through a multimethod get-component-type, but defaults to using the component's instance class as its type.
Components can therefore be defrecords or deftypes by default, but could easily be maps or just about anything else.
Systems are simply references to functions of the format (fn [delta]).

To learn more about Entity Component Systems, please read the Entity Systems Wiki.I personally, also found Adam Martin's Blog Post seriesvery useful at giving a step by step explanation of Entity System architecture.

News

Blog posts and news can be found on the Compound Theory Blog

Usage

See the Library API for all the functionality of this library.

Quick Start

A quick example based overview of what functionality Brute provides.

I've used fully qualified namespace, brute.entity and brute.system to be explicit about what is part of Brute in the demo code below, and what denotes custom code.

Creating the Basic Entity Component System

Brute doesn't store any data in a ref/atom, but instead provides you with the functions and capabilities for manipulating an immutable data structure that represents this ES system. This is particularly useful because:

How the entity data structure is persisted is up to you and the library you are using (although 9/10 times I expect it will end up stored in a single atom, and reset! on each game loop), which gives you complete control over when state mutation occurs – if it occurs at all. This makes concurrent processes much simpler to develop.
You get direct access to the ES data structure, in case you want to do something with it that isn’t exposed in the current API.
You can easily have multiple ES systems within a single game, e.g. for sub-games.
Saving a game becomes simple: Just serialise the ES data structure and store. Deserialise to load.
Basically all the good stuff having immutable data structures and pure functions should give you.

To create the initial system data structure:

(brute.entity/create-system)

This is actually a map, that lets you access Entities and their Components from a variety of ways, so you can always do it in a performant way.

{;; Nested Map of Component Types -> Entity -> Component Instance
        :entity-components      {}
     ;; Map of Entities -> Set of Component Types
        :entity-component-types {}}

Do note, that this data structure may be subject to change between releases.

Creating a Ball Entity, with corresponding Component instances.

A Ball component instance to know it is a Ball.
A Rectangle component instance to draw a rectangle in its' place
A Velocity component instance to know what direction it is travelling in, and how fast.

(defn create-ball
    "Creates a ball entity"
    [system]
    (let [ball (brute.entity/create-entity) ;; Returns a UUID for the Entity
          center-x (-> (graphics! :get-width) (/ 2) (m/round))
          center-y (-> (graphics! :get-height) (/ 2) (m/round))
          ball-size 20
          ball-center-x (- center-x (/ ball-size 2))
          ball-center-y (- center-y (/ ball-size 2))
          angle (create-random-angle)]
        (-> system
            (brute.entity/add-entity ball) ;; Adds the entity to the ES data structure and returns it
            (brute.entity/add-component ball (c/->Ball)) ;; Adds the Ball instance to the ES data structure and returns it
            (brute.entity/add-component ball (c/->Rectangle (rectangle ball-center-x ball-center-y ball-size ball-size) (color :white))) ;; Adds the Rectangle instance to the ES data structure and returns it
            (brute.entity/add-component ball (c/->Velocity (vector-2 0 300 :set-angle angle)))))) ;; Adds the Velocity instance to the ES data structure and returns it

Render each of the Entities that have a Rectangle Component

(defn- render-rectangles
    "Render all the rectangles"
    [system]
    (let [shape-renderer (:shape-renderer (:renderer system))]
        (.begin shape-renderer ShapeRenderer$ShapeType/Filled)
        (doseq [entity (brute.entity/get-all-entities-with-component system Rectangle)] ;; loop around all the entities that have a Rectangle Component instance
            (let [rect (brute.entity/get-component system entity Rectangle) ;; get the Rectangle Component Instance for this entity
                  geom (:rect rect)] ;; Rectangle component contains a Rectangle geometry shape.
                (doto shape-renderer ;; Draw the actual rectangle on the screen
                    (.setColor (:colour rect)) ;; Rectangle component contains the colour
                    (.rect (rectangle! geom :get-x)
                           (rectangle! geom :get-y)
                           (rectangle! geom :get-width)
                           (rectangle! geom :get-height)))))
        (.end shape-renderer)))

Systems Management

System management is an optional feature for you to use with Brute.

The following adds each system function to a list contains on the Entity System data structure, maintaining the order in which they were added.

(defn- create-systems
    "register all the system functions"
    [system]
    (-> system
    	(brute.system/add-system-fn input/process-one-game-tick)
    	(brute.system/add-system-fn scoring/process-one-game-tick)
    	(brute.system/add-system-fn ai/process-one-game-tick)
    	(brute.system/add-system-fn physics/process-one-game-tick)
    	(brute.system/add-system-fn rendering/process-one-game-tick)))

Finally call each function in the order added, simply write:

(brute.system/process-one-game-tick system (graphics! :get-delta-time))

Game Examples

Pong Clone written with play-clj

Contributing

Pull requests are always welcome!

Active development happens on the develop branch. The master branch is the source for the current release.

Reader Conditionals

This project uses Reader Conditionals to support both Clojure and ClojureScript. It should be a seamless experience.

Testing

To test under Clojure: lein test

To test under ClojureScript: lein cljstest

To run all tests: lein alltest

Run all tests in the a Docker Container

You should be able to run all the tests without having to install anything, except to pull the Docker container.

make test will run all the tests in the development Docker container, which should make development easier.

License

Distributed under the Eclipse Public License either version 1.0 or (atyour option) any later version.

使用案例

时序分析：串匹配—Brute-Force算法

设有主串s和子串t，子串t的定位就是要在主串s中找到一个与子串t相等的子串。通常把主串s称为目标串，把子串t称为模式串，因此定位也称作模式匹配。模式匹配成功是指在目标串s中找到一个模式串t；不成功则指目标串s中不存在模式串t。以下算法假设串采用顺序存储结构，即： #define MAXSIZE 50 typedef struct { char data[MAXSIZE];
Brute force Attack

1 Introduction A common threat that webdevelopers face is a password-guessing attack known as a brute force attack. Abrute-force attack is an attempt to discover a password by systematicallytrying eve
I - Killing the Brute-force

I - Killing the Brute-force @TOC I - Killing the Brute-force 在每个测试样例中，先输入一个m，之后一行输入m个数，a1,a2,am,ai为n=i的时候运行时间。下一行m个数,b1,b2,bm，bi为n=i的时候暴力算法的运行时间。题意为在bi<=3ai的限制下，求出n的最小值。用一个结构体，里面有第i组的运行时间a，暴力运行时间b，
sap brute

http://code.google.com/p/chrisjohnriley-metasploit-modules/updates/list http://www.metasploit.com/modules/auxiliary/scanner/sap/sap_mgmt_con_brute_login