Object-oriented programming. A paradigm using objects (instances of a class consisting of properties and methods) to design games. Techniques may include data abstraction, encapsulation, messaging, modularity, polymorphism, and inheritance.

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6answers
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How do I correctly use singletons in C++ engine programming?

I know singletons are bad, my old game engine used a singleton 'Game' object that handles everything from holding all data to the actual game loop. Now I'm making a new one. The problem is, to draw ...
14
votes
6answers
2k views

OOP architecture for Hero with many attributes

I'm about to start a simple browser text RPG, with characters that can (passively) fight other people. This involves a list of about 10 skills like strength, dexterity and so on, with additional ...
12
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3answers
5k 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 ...
9
votes
3answers
398 views

How do AI agents access information about their environment?

This might be kind of a trivial question, but I am having trouble understanding this. Would very much appreciate your help. In game development using object oriented design, I want to understand how ...
8
votes
2answers
880 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 ...
7
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3answers
4k views

What's a good entity hierarchy for a 2D game?

I'm in the process of building a new 2D game out of some code I wrote a while ago. The object hierarchy for entities is like this: Scene (e.g. MainMenu): Contains multiple entities and delegates ...
5
votes
4answers
2k views

How to make a game without OOP? [closed]

I am currenty studying game development and practicing making games. I use a lot of OOP in my games. For example, each missile that is shot is an instance of a Missile object, and added to a list of ...
5
votes
3answers
671 views

How to handle collisions without ugly conditionals and type checking?

(I asked a similar question, but this one is far more specific). How can I handle collisions without having to do a lot of type checking and if statements? People here suggested that when spotting a ...
5
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2answers
405 views

How should entities in a game reference each other?

I've been reading a lot about design patterns, but in using these patterns there's one question that I keep coming back to. How should my entities access information about each other? Let's say I'm ...
4
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2answers
2k views

Allocating Entities within an Entity System

I'm quite unsure how I should allocate/resemble my entities within my entity system. I have various options, but most of them seem to have cons associated with them. In all cases entities are ...
4
votes
4answers
176 views

Better way of handling the relation between Bullet and Enemy

I was wondering how should I design this relation in terms of "better OOP"? Should I have a Singleton EnemyManager which contains a list of enemies (EnemyList); then Bullets can access the EnemyList ...
4
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0answers
568 views

Why are god objects so common in game programming? [closed]

This is a bit of a philosophical question. Excuse me if it's out of place here. Most modern games developed in C++ use (or at least purport to use) an object-oriented approach. A common axiom of ...
3
votes
1answer
402 views

How should my game characters store their abilities/spells?

I'm new to game development and a bit confused about how to effectively store an object's access to certain spells/abilities. The player and mob objects are all generated from the same class. However,...
3
votes
2answers
174 views

Should entities store other other entities that they spawned?

How should a game entity add another game entity to the game world? For example, an entity shooting a missile (which is another entity), means the new Missile will need to be added to the entities ...
3
votes
1answer
842 views

Architecture to draw many different objects in OpenGL

I have some objects that I want to draw. I am not sure how I can create my architecture in a way where I can draw everything as fast as possible. As example: class MyObject { float[] vertices; ...
3
votes
1answer
120 views

What techniques are useful for modelling Character Actions via OOP? [duplicate]

I'm trying to rewrite a legacy php Browser-Based-Game so that it uses object oriented programming. I find it relatively easy to model concrete nouns, like: new Npc(), new Character(), new Account(), ...
2
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7answers
2k views

is ECS a kind of (or vs) OOP? [closed]

Is Entity Component System (ECS) considered a part of OOP or is it a completely different concept?
2
votes
2answers
177 views

Cost of Using Virtual Methods to Query Properties?

Let's say you're making a tile-based roll-playing game, and you're obsessed with OOP. You have an abstract base class Tile which will be inherited from by many derived classes, like Grass Sand and ...
2
votes
2answers
283 views

Decoupling the entity from whatever controls it

In a lot of games the player can choose whether an entity will be controlled by the AI or by the player. For example in the game Little Fighter 2, the player can choose how many of a maximum of 8 ...
2
votes
1answer
127 views

Design pattern for level editor modes?

In a level editor that supports multiple editing modes, written in an oop language, how would you go about switching from mode to mode, considering that data itself remains the same? I am using a MVC ...
2
votes
2answers
118 views

What is the advantage of wrapping D3D in a class versus a namespace?

Almost all the tutorials and books use a class wrapper for Direct3D. But I haven't found any scenario in which using more than one instance of Direct3D system (the "device" and state, et cetera) is ...
2
votes
3answers
314 views

OOP in cocos2d for ios

I have been pulling my hair out trying to make an object in cocos 2d that is a CCSprite (with an image) and a CCLabelBMFont. I tried making a CCNode object and I tried making a custom CCSprite object ...
2
votes
1answer
624 views

Multiplayer in a game. How to design it object wise?

I was suggested on StackOverflow to ask this question here. I'm working on a simple game and I was thinking of adding multiplayer feature but I'm a bit stuck. I'm not sure what approach should I take,...
2
votes
2answers
3k views

HTML5 point and click adventure game code structure with CreateJS

I'm a programming beginner. I made a tiny one scene point and click adventure game to try to understand simple game logic and came up with this: CreateJS features prototypes for creating bitmap ...
2
votes
1answer
119 views

Good approach in designing game classes [closed]

I took a semester-long course in java but I'm still a beginner in Object-Oriented programming paradigm. Suppose that I want to create a simple game where the player can go to different locations. Each ...
1
vote
2answers
151 views

OOP Question for Team System

I'm not quite sure right how I should create my "Team System". Lets say I have 2 teams with 4 players in there. The teams are Team Blue and Team Red. A team knows the amount of its members, the amount ...
1
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1answer
88 views

Designing PHP RPG game: Should I use multiple classes for each type of item or a single table?

I'm making a text-based role playing game written in PHP. I have a hard time figuring out how to handle items in game - there will be a few types of objects (weapon, machine, tool, building etc) each ...
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4answers
426 views

Class design and data structures for a Tower Defense

I was trying to come up with a structure for a simple TD game that has following elements Tower Each Tower has a set of properties like range, damage, health etc There could be different types of ...
1
vote
1answer
273 views

OOP design, keeping track of entities

First, I would like to say that I have no experience with this and am still getting my head around OOP, so if something is really obvious, just point it out :) I am designing a game and I am not sure ...
1
vote
1answer
241 views

Game development for high-school with C++ and OpenGL [closed]

I've been teaching high-school students (12th grade) game programming in the last 2 years. The way I did this till now, was first to give them "half made" classes (for Point, Polygon, etc.) and they'...
1
vote
1answer
704 views

Entity Component Systems with Model View Controller

Can the Model View Controller design pattern be used with non-OOP coding style, specifically with Entity Component System?
1
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4answers
710 views

Non-object-oriented game tutorials

I've been tasked with writing an essay extolling the virtues of object oriented programming and creating an accompanying game to demonstrate them. My initial idea is to find a tutorial for a simple ...
1
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2answers
151 views

Is it acceptable to mix simple physics logic with gameplay logic?

In my 2D game I have a PhysicsEngine class. It currently does two things: Called every frame to apply global forces on all entities (e.g. gravity). Called by the CollisionDetector to do the physics ...
1
vote
1answer
396 views

Implicity of “Objects” in component based design

For a while, I have mostly been using "standard OOP" (inheritance heavy, tree structure, etc.) styled designs for my Game Development needs. However, for my current project I am trying to shift over ...
1
vote
1answer
57 views

How should I handle a modelview stack with multiple shader programs involved?

I'm building a framework where each object has an associated program and each object has a 'draw' method. What is the best choice, to have a single modelview stack handled by a Renderer class or to ...
1
vote
2answers
3k views

C++ OOP Implementation of a game [closed]

I've been recently trying to get into Object Oriented Programming by porting a game I've made in C to C++. The problem is, even though my implementation works, I don't know if is the best approach. ...
1
vote
1answer
1k views

Best Practices for class usage and game architecture

I'm making a 2D game similar to mario in Java. I have some questions about class organization and proper method usage. I have the following classes: Main: runs the game in a JFrame GamePanel: ...
1
vote
1answer
363 views

Structuring various game states and unique levels

I have a game design 'structure' question that I'd like to throw out there. This question is about various ways of designing game 'states', and specifically a system of 'levels'. Specifically, what is ...
1
vote
2answers
158 views

Command Interface design for RTS

Commands may have different target type; like NONE, COORD, UNIT. Some example commands may be: Attack (target UNIT), Move (target COORD), AttackMove (target COORD), Stop (target NONE), UseAbility (...
1
vote
2answers
341 views

Updating entities in response to collisions - should this be in the collision-detection class or in the entity-updater class?

In a game I'm working on, there's a class responsible for collision detection. It's method detectCollisions(List<Entity> entities) is called from the main gameloop. The code to update the ...
1
vote
1answer
370 views

Bullet Manager Class

I'm making a game in AS3, and it's a rather simple shooting game because I'm original. Anyway, probably the most subjective question here yet: what is the best way to implement bullets in my game? ...
1
vote
0answers
427 views

Big game in Flash - how to create levels structure

I'm building a game in Flash similar to the structure of Angry Birds or Cut the Rope (where there are a number of "rooms" and unique levels created within each "room"). The user gets through the game ...
0
votes
1answer
929 views

Superclassing RPG Game Entities [closed]

I am in the design process of an RPG game and I have no experience at all in game dev. This question is about how I should approach entity management using OOP classes. My train of thought is as ...
0
votes
4answers
271 views

Actor and Sprite, who should own these properties?

I'm writing sort of a 2D game engine for making the process of creating games easier. It has two classes, Actor and Sprite. Actor is used for interactive elements (the player, enemies, bullets, a menu,...
0
votes
2answers
268 views

Good design for skills (heal,dmg etc)

I'm trying to create a good designed "skill system" for my game, but curious if anybody knows a good design? Skills can Heal,Damage ofc, they can be single target,multiple(chain), AOE. Instant dmg/...
0
votes
1answer
98 views

QuadTree treeNode design question

I'm a programming newbie. I have a Quadtree. I created a TreeNode class that the Quadtree will use as nodes. I have spriteNode that inherits from TreeNode. However, I also have several sprite ...
0
votes
3answers
87 views

Getting entity type object [closed]

I have a custom entity class and what it does is create a SQUARE object. public class Entity { Rectangle rect; public Entity() { this.rect = new Rectangle(20,20); rect.relocate(200,200); ...
0
votes
1answer
30 views

sfml/opengl, two objects of same class are sharing variables

whenever I use the none-default constructor, it only adds to the coordinates of the previous class(in an array) wall_1x1 wall[2] = { wall_1x1(0, -2, 0), //first argument is x, second z, and ...
0
votes
2answers
84 views

Can we create same name class for different objects in unity?

I have four similar objects in my game. As they are all similar therefore I have created a single script that defines mash for all of them. The script that defines mash for these objects uses a ...
0
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1answer
98 views

Is it better to make a cpp and hpp file for every new object or is it better to make one parent class and define types in there? [closed]

Let's say we make a game. The game has items, enemies, allies, etc and there are multiple of them, like zombies and robots as enemies. Do you think it would be better to make one parent class called "...