1
vote
1answer
68 views

Viewing one of multiple worlds in a component entity system?

I've been working on a space simulation game. The player can control a ship and fly through wormholes to get from one solar system to another. I would like the player to be able to switch the camera ...
4
votes
5answers
246 views

How can I efficiently implement a bitmask larger than 64-bits for component existence checks?

In my ECS implementation, I use bit-wise operations (as described and illustrated in this thread) to tell an entity what type of components it currently consists of. So my Entity class has the ...
2
votes
1answer
123 views

Entity Component System for HUD and GUI

This is a very rough sketch of how I currently have things designed. It should, at least, give an idea of how my ECS is currently designed. If you notice in that diagram, I have basically split ...
6
votes
2answers
244 views

Why are entities in a component system composed at run time?

Why are entity component systems the way they are? For example as far as I have seen it may look like this class Entity list of components add component remove component update ...
2
votes
2answers
232 views

Handling cyclic dependencies in entity/components system

I built an rather standard C++ entity/component system (a bit like this one). Components can access other components through their associated Entity. This is usually done by getting some kind of ...
1
vote
2answers
407 views

Entity Component System, weapon

I'm new to game programming and currently trying to understand Entity Component System design by implementing simple 2d game. By ECS I mean design, described here for example In my game I have ...
1
vote
1answer
145 views

Dealing with sprite loading and setting in an entity-component system

I've just started using an entity-component system for the first time and I'm having trouble making some decisions. Currently I've got a SpriteComponent that holds a sprite, a ...
1
vote
1answer
455 views

Entity Component Systems, Input, and Angry Birds!

I am using Artemis ECS. I have the very basics of a game already. I am now trying to determine how to gracefully handle input and to a lesser extent collisions. Some people say with ECSs, everything ...
2
votes
1answer
134 views

Registering and (more importantly) Unregistering with Message Server

I've finally implemented an extendable message class and messageServer class. The message class dynamically assigns a unique static ID to each derived message type (ex. ObjectCreatedMessage might be ...
1
vote
1answer
246 views

Need opinions on my component based design [closed]

I have an Entity class and a Component class. The Entity class has a list of attached components, and each component also has a member variable that is a reference to the entity that it is attached to ...
6
votes
1answer
402 views

How would one store global context data in an entity component system?

My question is this: How would one store global context data, ie. world data information, current world time, etc in an entity component system? I'm think of working towards building a Dwarf ...
3
votes
2answers
234 views

Target a specific Entity in a Component-Entity design

I'm starting to work on a game with Entity-Component Model Architecture (Artemis in C#). I'm beginning with something pretty simple, entities which are living things, with HealthComponent, ...
1
vote
1answer
298 views

AI of Turn Based game using Entity System approach

I just recently learned about Entity Systems and want to try it out on a real example (I was developing a game recently and want to try to port it over Entity Systems). But I got problem right away. ...
5
votes
3answers
266 views

How can I achieve strong typing with a component messaging system?

I'm looking at implementing a messaging system in my entity component system. I've deduced that I can use an event / queue for passing messages, but right now, I just use a generic object and cast out ...
0
votes
3answers
420 views

Rendering order in an Entity System

Say I use a basic ES approach, and also inside Systems I hold lists of all entities that Systems are required to process. How do I maintain this list of entities in desired rendering order, i.e. for ...
6
votes
3answers
1k views

How to avoid “Blob-Systems” in an entity component system?

Currently I am facing the following problem: I am trying to write a pong clone by using an entity component system (ECS). I wrote the "framework" all by myself. So there is a class which manages ...
2
votes
1answer
279 views

Questions about the details of implementing a component-based entity system [closed]

I started reading about component-based entities, and overall it seems like a good idea, but many of it seems to skip over a lot of details and not give many real examples, so there are things that ...
2
votes
1answer
278 views

Different kinds of movement in component based entity system

I am writing a pong clone with a component based entity system. But I am having trouble with the different kinds of movement in the game. The problem is the following: My paddles will just move up ...
2
votes
1answer
783 views

Tilemap collision in component based entity system

I am trying to set up a collision system for a tilemap in my component based entity system, but having trouble with figuring out how to do so. Currently I have the following approach: My tilemap ...
1
vote
2answers
418 views

best structure to handle entities in an entity component based game engine

I am trying to develop a 2D entity component based game with multiple layers as tilemaps (front or back from the scene). I currently handle the tilemap layers in a 3 dimension array[z][y][x]. Each ...
5
votes
1answer
266 views

Design to handle logic within a state

I am designing a new game and I am trying out the entity-component design where entities are comprised of groups of components holding a bunch of attributes. I also have a stack of 'game states' and ...
5
votes
0answers
273 views

Techniques for incorporating physics engines like Box2D into a Component-based Entity System [closed]

Currently i'm working with my own physics engine, however given the fact that the emscripten ports have gotten incredibly good, i wanted to try and incorporate Box2D into my entity system for the next ...
7
votes
3answers
2k views

Input handling in component based design

I know this question has been asked several times, but I'm still not sure how to implement input handling in a component based engine. The component based design I used was based on T=Machine's blog ...
11
votes
2answers
3k views

Game state and input handling in component-based entity systems

My question is: How can I handle game states in my entity system, without resorting to keeping a stack of game state objects around? So the design of my entity system means that when an entity needs ...
1
vote
1answer
251 views

How a “view” is handled in an Entity-Component based model?

Coming from an MVC background, I am trying to understand Entity-Component based model. However, i can see description about the use components( data objects ) and entities ( group of different ...
1
vote
1answer
260 views

Server architecture software side

I'm making a game some like Terraria. I have a couple of prototypes, but most of them use a "entity-component-system"(ESC) and some custom terrain implementation. Now I've reached the part where I ...
2
votes
4answers
1k views

How should IDs be assigned in an entity component system?

I haven't actually implemented this system yet. I'm trying to work through the major conceptual hurdles before I actually start writing code, and the proper way to generate IDs is a little confusing ...
5
votes
2answers
1k views

Entity Component System: Retrieving components quickly [duplicate]

Possible Duplicate: Retrieving components from game objects (entities) I'm working on an entity-component-system game at the moment. I've looked in particular at the Artemis framework and a ...
3
votes
2answers
561 views

Handling movement using an Entity Component-based System Architecture

I have seen various descriptions of how to handle movement in a component-based entity framework. The most common I've stumbled across is the idea of using components called Controller, Physics, ...
7
votes
2answers
3k views

Tips for Component Based Entity System message handling

I'm trying to implement a component-based entity system but am a bit confused on how I should handle the messaging. There are two problems I'd like to resolve so I can test the system. Below is the ...
8
votes
1answer
1k views

How to handle materials in an Entity/Component system

My E/C implementation is the basic one where Entities are just ID's, Components are data and Systems act on the Data. Right now I'm having trouble with object materials and rendering in general. For ...
2
votes
2answers
593 views

In an Entity-Component System, how to represent the world/level/gameboard?

I am trying to learn more about Entity-Component Systems, and something that kinda stuck out at me was the question of how to represent the world in such a system? More specifically, I'm trying to do ...
5
votes
1answer
870 views

Component/Entity-based design + Behavior Trees => how to integrate?

For my current project I implemented a component/entity-based system, basically following most of the best-practice there is in this rather undefined area. So I got (slightly extended) Entities, ...
2
votes
3answers
486 views

Component / Entity-based design => no inheritance at all?

[I understand that this this could be seen as a rather theoretical question, but I think it has real-application impact]. "Academic" base With a component-based design one wants to get rid of the ...
1
vote
1answer
334 views

Bullets and projectiles in component based entity systems

Currently one of my games engines written for a shooter seems to work correctly. Currently projectiles are sparse, travel quite slowly and are synced over network they are generated as entities. ...
2
votes
7answers
599 views

is ECS a kind of (or vs) OOP?

Is Entity Component System (ECS) considered a part of OOP or is it a completely different concept?
3
votes
3answers
1k views

SceneManagers as systems in entity system or as a core class used by a system?

It seems entity systems are really popular here. Links posted by other users convinced me of the power of such system and I decided to try it. (Well, that and my original code getting messy) In my ...
8
votes
2answers
566 views

Many sources of movement in an entity system

I'm fairly new to the idea of entity systems, having read a bunch of stuff (most usefully, this great blog and this answer). Though I'm having a little trouble understanding how something as simple ...
7
votes
1answer
422 views

Entity Type specific updates in entity component system

I am currently familiarizing myself with the entity component paradigm. For an example, take a collision system, that detects if entities collide and if they do let them explode. So the collision ...
6
votes
3answers
1k views

How to update entity states and animations in a component-based game

I'm trying to design a component-based entity system for learning purposes (and later use on some games) and I'm having some troubles when it comes to updating entity states. I don't want to have an ...
6
votes
6answers
3k views

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 ...
3
votes
2answers
514 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 ...
5
votes
3answers
2k views

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 ...
2
votes
1answer
425 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 ...
20
votes
5answers
4k views

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 ...
6
votes
2answers
2k views

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 ...
10
votes
3answers
2k views

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 ...
9
votes
3answers
4k views

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 ...
19
votes
3answers
4k views

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 ...
87
votes
1answer
13k views

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 ...