Questions tagged [design-patterns]
Design pattern is a general reusable solution to a commonly occurring problem within a given context in software design.
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Entity-Component-System design
I read a lot about ECS (strategy) pattern and have a few questions. Consider simple space game.
We have stars there. Obviously star is an entity. What if I want to ...
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Terrain and Path Architecture
I am trying to figure out how to not break the SOLID principles with a collection of classes I am writing.
Currently, I have two stacks of classes that cater for editing and rendering Terrain and ...
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Where to put graphic representation of game entity?
I am working on simple 3D version of Snake game. I created classes like snake and grid so far. My concern is, putting all render ...
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Making specific Enemy Classes
So I was just looking through an old game I had made for android, and was second guessing how I was sub-classing enemy for each particular enemy in my game. My enemy class had all kinds of properties,...
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How can I refactor my code to use fewer singletons?
I started a component based, networked game (so far only working on the server). I know why singletons can be bad, but I can't think of another way to implement the same thing. So far I have:
A ...
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Unit selection - logic & screen communication
I'm building a game using SFML, with disconnected logic & screen systems that run on different threads and communicate through synchronised buffers. Now, this system worked perfectly well when I ...
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Designing a system for delivery
I'm writing a game where deliveries are made to specific people. These people act in different ways depending on what the delivery is. At times one character might ask the player to make a delivery to ...
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Implementing ability system with ability parameters
I am trying to implement an ability system in Unity for a game similar to XCOM (turn based, team consists multiple of units, grid based). Every unit have X action points per turn.
I would like to do ...
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How to script sequential events in GameMaker?
I am wondering if there is an elegant way to script sequential events in GameMaker 2.
In Godot 3.1, it is very easy to chain events together using yield() and ...
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How to control JavaFX's animations execution order when animations "queue" is being altered in run-time?
What is the proper way of handling synchronization between GUI animations' execution order and the user's dynamic input?
More specifically, I would like to know how to enforce some logical ...
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Handle states in character in functional programming way
How to handle any change of state of a character with functional programming?
If I'm using functional programming the character should be stateless, in my understanding. With that said, I should ...
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Can I have a scene graph translation node with multiple parent nodes?
I am trying to write a C++ scene graph structure. While designing the node classes I am facing the below issue.
I have a scene graph to represent a house.
I would like to have another house next to ...
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Design pattern for turn based strategy game in C++
I'm studying computer science at university. So far I've created several programs for school projects and homeworks in C++. They were usually smaller programs up to 1000 lines of code.
Now I want to ...
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Register Enemies in game development
I'm working on a game to learn the basic for game concepts. I end up with the following problem. I got a class called enemy, but now I want different types of enemies. These enemies extend from this ...
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What's an optimal procedure to create a connected cyclic grid of nodes and edges for A* pathfinding
like the title says, I'm trying to create a grid of nodes that hold edges or connections to each other so I can perform A* algorithm to have objects traverse across them as seen in your standard RTS.
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How can I defer the initialization of my level's entities until I need them?
I intend to use a level-entity-components hierarchy in my C++ game engine where a "level" is just a container for entities. However, since I'd like to setup all the levels at once (and thus all ...
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Categorizing Projectiles in an arcade shooter (multiple inheritance?)
I have been working on a simple arcade shooter in Java in the vein of missile command/space invaders. I've made a base Projectile class and have been extending other Projectile types from it. This ...
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Sprite quickly disappears after rendering
I'm currently making space invaders and I'm using the game loop pattern as described here. I have an entity class from which there is a spaceship derived class. The base entity class contains all of ...
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Flexible projectile system?
Projectiles need to accommodate timed, homing, linear, and arced behaviours and have single, cone, and splash effects on hit. What is a good pattern to accommodate these different behaviours that ...
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Buttons implementation with regards to a basic Game Loop
As the title states I am creating a game with SFML being the only library used.
I am entirely unsure how to go about this.
I want the buttons to be activated by simple mouse clicks (when the mouse ...
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Observer pattern for clickable 2D Elements?
So i am currently thinking about the best way to handle and implement clickable 2D menu elements in a very simple DirectX Game.
I very much like the idea of having subscribers to a event where they ...
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Handling creation of entities on level creation
I'm currently working on a 2d physics based plat former, kinda in the style of super meat boy. In super meat boy, you have multiple levels and I want a similar sort of thing but is there a general way ...
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Data Locality and Polymorphism [closed]
I've been reading over the various chapters available at http://gameprogrammingpatterns.com, and in particular his chapter over Data Locality(http://gameprogrammingpatterns.com/data-locality.html) has ...
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Best practice child and parent script [closed]
What is the best practice coming to where to place the code in this scenario.
I have a gamobject called player. It has lots of child objects. One of them is sword.
Like this:
Player
Body
Head
...
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How to model / where to store relational data between classes
I'm trying to figure out the best design here, and I can see multiple approaches, but none that seems "right."
There are three relevant classes here: Base, TradingPost, and Resource. Each Base has a ...
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Trouble with the State of things in XNA
I'd decided to break the mold and make my first game based on RPG mechanics (note sarcasm). An RPG style action bar would be a reasonable and fun way to get started as it's limited in scope but still ...
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Where in code to for collision? In object class? Mainline code?
Making a simple game in Love 2D framework where if I click on an object then it disappears.
Do I check to see if I've clicked the enemy inside a function in the enemy object? Or just in my main.lua? ...
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Unity Game Architecture
I'm working on a relatively simple game, but even simple games have a lot of moving parts, and I'm running into some architecture issues. Just to be clear, everything works fine, but it feels dirty, ...
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What is a "controller"?
I'm in the process of refactoring my camera code the goal is to try and simplify things using a struct instead of a class or at the very least try something new since I always jump straight to classes/...
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Good practices for making a manager class?
I found this post for designing a camera system the post mentions having a manager where you could register and set different cameras such as debug, player, script, etc and I kind of like this ...
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How could I build components for a composable loot system like one in RuneScape without using OOP?
I looked at some entity component systems, and noticed that they sometimes list static polymorphism as a feature, and ECSs and data oriented programming seem to be touted as holy grail of modern game ...
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Why does ROBLOX use an object-oriented system rather than an entity component system? [closed]
I decided I would develop a game engine in c++, so I was thinking about different ways of handling objects. I also have experience with ROBLOX, so I know that it uses an object-oriented design as ...
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Am I doing something wrong in my ECS architecture if I must choose between coupling or copying code?
I'm developing a somewhat simple, small roguelike game as my university project. Early into development I heard about Enity-Component-System and decided to go with that as my game's architecture. ...
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How do I solve a problem where sometimes recursion is untenably vast and sometimes it is not?
I am writing a programming language of my own. (I've done two Turing complete ones in the past, but this time I'm trying to actually be useful.)
Now, one thing that should be especially easy with ...
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What design pattern would be most suitable for RPG skills?
I'm developing a small Java digital card game project. In my game, players can perform skills when using cards. Each skill does different things, like deal damage, heal etc.. I'm looking for a way to ...
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How do I change a specific set of spawned buttons from gray to green?
I'm a self-taught programmer.
I have a button class runs like this:
...
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Is there an accepted architecture for these classes? [closed]
I am coding a game in python and so far so good, but I feel like my classes are not very modular. This is a simplification of what I've done:
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How to organize passing data to shaders in cross-API render system?
I try to create rendering system that supports DirectX and OpenGL. I am trying to create class for constant buffer, but DirectX constant buffers and OpenGL uniform buffers have different memory ...
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How to design AI Manager [closed]
I am currently building a AI system for a game. I am familiar with State design pattern and implemented different states for each agent in my game.
Different states are like Running, Attack, Idle, ...
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Problem with Factory Method Pattern when I try to create a Weapon:MonoBehaviour
I'm learning about Design Patterns using Unity and I'm not sure about how to solve the following problem with the Factory Method Pattern:
I want to read a XML file and using the Factory Method ...
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Interaction between entity and tiles
In my game, I have a player, ennemies and tiles like Mario. And each entity has a different behavior when it touches a tile. For exemple, when my player walks on spike he dies. But a certain type of ...
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Strategy for abstracting rendering from draw surface
This question might be a little vague because I don't know how to do this myself and I might be asking something rather silly. So here we go.
Up to now, when I did my personal graphics code I used ...
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Pluggable modifiers to game engine
I'm currently working on a clone of an old turn-based strategy game "Stars!" and am looking for solutions to a challenge in game engine implementation.
The premise
The premise of the game is that ...
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Tip on turn based game AI
I'm quite new in video game AI, and I'm trying to design an AI for a turn based game.
The rules are simple:
The battle field is represented by an NxM board.
The game is between two team, each team ...
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Security-minded design patterns / paradigm for client/server application
I am working on a client/server application and am starting to take it from proof-of-concept to actual implementation. The client is an Android application and the server is in PHP. In similar ...
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Update function - design patterns [closed]
I started reading about game development design patterns and from my experience there are 2 options for update methods. The first one receive from the game loop and delta time of this update and ...
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2D Collision : detection and design [duplicate]
So, listening to this very smart piece of advice, I've already completed a basic Tetris game. Moving on, I started a small breakout. But suddenly : a nightmare came. Collisions.
Since I've been ...
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What is the right way to use a QStateMachine for a text adventure game? [closed]
I have seen a couple topics about this already but they were a bit vague for me so I decided to make this. I'm working on a little adventure game just for fun in Qt, its basically just text on the ...
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State Machine with State per Entity [closed]
I have a generic state machine implementation like this:
...
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Where can I learn 2D game architecture [duplicate]
Possible Duplicate:
Good resources for learning about game architecture?
I know that game architecture can vary greatly, especially with the type of game being built, but I know that there are a ...
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