A programming paradigm in which gameobjects (entities) are composed out of components, and are operated upon by systems. Each entity is an ID that points to specific components.

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Logic in Entity Components Systems

I'm making a game that uses an Entity/Component architecture basically a port of Artemis's framework to c++,the problem arises when I try to make a PlayerControllerComponent, my original idea was ...
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Actually utilizing relational databases for entity systems

Recently I was researching several entity systems and obviously I came across T=Machine's fantastic articles on the subject. In Part 5 of the series the author uses a relational schema to explain how ...
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4answers
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Entity System and rendering

Okey, what I know so far; The entity contains a component(data-storage) which holds information like; - Texture/sprite - Shader - etc And then I have a renderer system which draws all this. But ...
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0answers
494 views

ECS, databases, XML and serialization

My entity/component/system engine is coming along quite nicely; I have two very different apps working on the same executable. (One 2-d scroller, one 3D Asteroids-type game). In the interest of ...
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1answer
411 views

How should I share variables between instances/classes?

I'm making a game using LOVE, so everything is programmed in Lua. I've been experimenting with using classes and object orientation recently. I've found out that a nice system to use is having most of ...
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3answers
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How to code UI / HUD in Entity System?

I think I already got the idea of the Entity System inspired by Adam Martin (t-machine). I want to start using this for my next project. I already know the basic of Entity, Components, and Systems. ...
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1answer
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State / Screen management in Entity Component Systems

My entity/component system is happily humming along and, despite some performance concerns I initially had, everything is working fine. However, I've realized that I missed a crucial point when ...
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2answers
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How to use batch rendering with an entity component system?

I have an entity component system and a 2D rendering engine. Because I have a lot of repeating sprites (the entities are non-animated, the background is tile based) I would really like to use batch ...
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2answers
715 views

Adding sub-entities to existing entities. Should it be done in the Entity and Component classes?

I'm in a situation where a player can be given the control of small parts of an entity (i.e. Left missile battery). Therefore I started implementing sub entities as follow. Entities are Objects with ...
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3answers
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Entity System with C++

I'm working on a game engine using the Entity System and I have some questions. How I see Entity System : Components : A class with attributs, set and get. Sprite Physicbody SpaceShip ... System ...
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1answer
841 views

Entity component system - where did attributes and behaviors come from?

I recently spent quite some time understanding and building a component-based system. I got stuck on a few problems and after searching for quite some time ran across this answer which is talking ...
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Composition heavy OOP vs pure entity component systems? [closed]

I admit, I have made the sin of overusing, and even abusing inheritance. The first (text) game project that I made when I was taking my OOP course went as far as "Locked door" and "unlocked door" from ...
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3answers
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Handling movement in an Entity Component System

I'm working on a 2d RPG game in C# using an Entity-Component-System architecture, and I'm currently working on movement. Right now, I'm wondering how to organise the code so it looks a bit more.. ...
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2answers
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Collision detection and response in an Entity System

More fun with an ES... Currently, I have a few systems: Renderer (Renderable attribute, Transform attribute) Motion (Movable attribute, Transform attribute, Renderable attribute [for bounding ...
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2answers
719 views

Particles/instancing groups in an Entity/Component system

I've been playing with an entity/component/system design recently, and I've come across a couple of stumbling blocks. Instancing Let's say I have a few hundred "things" (asteroids, chickens, ...
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1answer
469 views

Is my engine concept a good one?

I'm currently writing a generic engine for my incoming games. I have developed few games already but never with the same "base" and my code was/is quite a mess. The idea was to create an engine that I ...
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2answers
801 views

Doesn't multiple inheritance solve all problems that entity systems do?

The question is pretty self explaining: doesn't multiple inheritance solve all the problems that entity systems also solve? I just remembered a term called "multiple inheritance", and that seems to ...
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2answers
164 views

Benefits of implementing systems like classes instead of just functions

In an Entity System I am making, there is a central class called World, which stores all component instances. It's a dictionary-of-arrays, and entity ids are indexes for the arrays. To access a ...
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1answer
230 views

What data should a generic collision detection system gather?

I'm working on a relatively generic 2D AABB collision detection system for a game engine, and I've re-written it more times than I'd like to admit due to not calculating/recording specific details of ...
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5answers
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Implementing features in an Entity System

After asking two questions on Entity Systems (1, 2), and reading some articles on them, I think that I understand them much better than before. But, I still have some uncertainties, and mainly they ...
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2answers
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Tilemaps in a Entity System Framework?

I have been reading up on Entity System Frameworks specifically Artemis. I am trying to decide if it is right for me. I strictly work on tile based 2d pixel art games, and I don’t think they will ever ...
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3answers
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Why is it a bad idea to store methods in Entities and Components? (Along with some other Entity System questions.)

This is a followup to this question, which I answered, but this one tackles with a much more specific subject. This answer helped me understand Entity Systems even better than the article. I've ...
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3answers
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Entity Component System based engine

Note: I'm programming this in Javascript, but it should be language agnostic in the most part. I am thinking about converting my engine to an ECS based one. I get the basic idea (note: this is ...
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3answers
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In an Entity-Component-System Engine, How do I deal with groups of dependent entities?

After going over a few game design patterns, I have settle with Entity-Component-System (ES System) for my game engine. I've reading articles (mainly T=Machine) and review some source code and I ...
107
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1answer
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Role of systems in entity systems architecture

I've been reading a lot about entity components and systems and have thought that the idea of an entity just being an ID is quite interesting. However I don't know how this completely works with the ...
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2answers
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How to structure game states in an entity/component-based system

I'm making a game designed with the entity-component paradigm that uses systems to communicate between components as explained here. I've reached the point in my development that I need to add game ...
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1answer
378 views

Texture switching with a entity system

I'm using thinking of using an entity system in my game. So far I've been using Artemis with success. However, I have a question about texture switching. I read that switching textures too often is ...
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2answers
828 views

How do I sync entity ids with the server and client?

I'm continuing my experimentation with entity component design by making a multiplayer space/trading/combat game with python and panda3d. My component system is a simple version of java's artimis. The ...
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1answer
565 views

Initializing entities vs having a constructor parameter

I'm working on a turn-based tile-based puzzle game, and to create new entities, I use this code: Field.CreateEntity(10, 5, Factory.Player()); This creates a new Player at [10; 5]. I'm using a ...
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1answer
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Variants of Entity Component Systems

I've been reading up on these, and there seem to be two major variations which I'd like to understand better. Entities should contain only data Components, which are processed by systems which ...
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3answers
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Designing an entity system for a tile-based puzzle game

I'm developing a tile-based game creation library in C# and along with it I'm creating a game to test all of its functions. This is a screenshot of the game: You've probably never heard of the ...
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2answers
375 views

How to model interentity membership in entity-component architecture?

I'm falling in love with simple grace of entity-component design, although I still have issues breaking from MVC and OOP practices. Some of my game entities have membership relationships with each ...
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1answer
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Designing generic render/graphics component in C++?

I'm trying to learn more about Component Entity systems. So I decided to write a Tetris clone. I'm using the "style" of component-entity system where the Entity is just a bag of Components, the ...
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1answer
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Abstracting Entity System animation states

I recently started designing a Game Engine using the Entity System paradigm, i.e. having entities as an aggregation of components, and systems that implement the actual game. Whereas I've had ...
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1answer
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In a component/entity system, what's the correct way to implement entity-specific components?

I'm trying to create a basic C/E game engine for Android, and I'm trying to re-create pong as a basic warm-up. I currently have a EntityManager class that contains a list of all the UUIDs for its ...
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1answer
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Understanding the Entity-Component Model [duplicate]

Possible Duplicate: Role of an entity state in a component based system? So, I've heard a bit about a model of game programming that involves creating entities and then attaching different ...
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2answers
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Book about Entity System?

I'm really interested about the capabilities of Entity System. I'm trying to search for a good book on this one, but failed. I don't want to get lost on learning this paradigm so a book will be a big ...
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3answers
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How to properly implement message handling in a component based entity system?

I am implementing an entity system variant that has: An Entity class that is little more than an ID that binds components together A bunch of component classes that have no "component logic", only ...
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2answers
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Handling scripted and “native” components in a component-based entity system

I'm currently trying to implement a component-based entity system, where an entity is basically just an ID and some helper methods tying a bunch of components together to form a game object. Some ...
52
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1answer
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Using component based entity system practically

Yesterday, I've read a presentation from GDC Canada about Attribute / Behaviour entity system and I think it's pretty great. However, I'm not sure how to use it practially, not just in theory. First ...
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1answer
942 views

What are the drawbacks of this messaging system implementation?

So I've just been thinking about component and messaging systems recently for simple C# XNA games and came up with this. How extensible would this implementation be and what are the drawbacks? Example ...
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2answers
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How do I deal with abstracting collision handling code between entities with differing collision components?

I'm using a component based entity design with Components that hold the data and Systems that act on entities based on the components they have. Entities are registered to all systems as they are ...
2
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5answers
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Need opinions: is it worth making component based entity system? [closed]

I've been reading about component based entity-system for couple days now and I'm not quite sure if it is worth implementing in my next game. I haven't started making the game yet, but I have bunch of ...
8
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1answer
827 views

Processing component pools problem - Entity Subsystem

Architecture description I'm creating (designing) an entity system and I ran into many problems. I'm trying to keep it Data-Oriented and efficient as much as possible. My components are POD ...
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1answer
957 views

How would you design components for an entity like this?

This is not a question about how to implement a component based system. I have my own system implemented and working fairly well, just can't figure out a good way to split some entities to fit the ...
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0answers
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Suitable in memory storage library to store components for entity systems [closed]

I am studying entity indexed components and came up with a naive C++ implementation which just iterates over all entity "hash tables" and applies update/delete/insert functions in place. I'm having ...
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2answers
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Functional reactive programming (FRP) in games. Some doubts and thoughts

These days I'm doing some research on Component based entity systems. I had a first aproximation using a blackboard pattern at Entity level and components sharing this blackboard to do communication. ...
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2answers
391 views

How to place objects/entities randomly in JS?

I'm making a game and I have a script (running it with Node) on the server that currently just randomly places things on the map... I'd like to change that. I saw something about Perlin noise but I'm ...
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2answers
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Entity manager loop opinions

This days I'm refactoring code and one of the things I want to improve is my entity manager code. More precisely, the update funcion where entities are updated. My engine is a 2D tile based engine ...
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3answers
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Organizing an entity system with external component managers?

I'm designing a game engine for a top-down multiplayer 2D shooter game, which I want to be reasonably reuseable for other top-down shooter games. At the moment I'm thinking about how something like an ...