Game engines are a collection of libraries and tools that provide a framework to create games.

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6
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Which parts of game should belong to engine and which should belong to scripts?

Often, the game is splitted into engine code (i.e. C++) and scripts (i.e. Lua). The question is which parts / modules of game code should typically belong to engine, and wchich should belong ...
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2answers
238 views

How to wrap textures inside shader GLSL

I'm trying out GLSL and one of the problems I'm facing is wrapping a random texture sampler in the shader. Searching for answers on the web first, this leads me to using these commands: ...
0
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1answer
70 views

Rectangle moves faster to the left than to the right

I am using Slick2d to create a top-down game, however an rectangle than I am drawing to the display is moving faster to the left than to the right, and faster up than down. I am updating frames like ...
1
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2answers
178 views

In-app update, live update, hotfix for mobile game

I'm researching how to make an in app update on mobile game. When there is a hotfix, or an update, users don't have to go to Playstore, or App store to update but update inside the game. (E.g. Clash ...
4
votes
1answer
192 views

How can I show slow motion?

In my very, very simple 2D game I'm working on, I'd like there to be moments of slo-mo. What is the best method of showing the player that the game is currently in slow-motion? As in, what is the ...
1
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3answers
99 views

When should we save our game data?(Before quit game or just when some data changed?)

For standalone game, what's the best time to save game data, such as player's coin, player's level, skill data and so on. Save data before we quit game.So we just save data to file just one time, ...
3
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1answer
93 views

How do engines that can be scripted with a different language than the engine work?

So there are some engines that can be scripted with different languages than of what the engine itself is written with. How does this work?
1
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0answers
117 views

How to add 3D Sprite on tmx file background using Cocos-2dx?

We have been working on sample game, wherein we want to show 3D sprite on .tmx file(background). But 3D sprite is never shown up, though we tried setting tileMap->setGlobalZOrder(-1). Following is ...
1
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1answer
245 views

Setting up an efficient OpenGL rendering loop

This is the code that I use to setup my shader char* vertexShaderSource = getResource("vert.shad"); char* fragmentShaderSource = getResource("frag.shad"); vshad = readFile(vertexShaderSource); fshad ...
3
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0answers
148 views

Learning Curve of GameMaker and its limits [closed]

I am a Data Scientist and the last couple of years, I work also as a Game Designer (not Game Development). I have not thought to create a game by myself, up to now. As a DS, I know programming, but I ...
2
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1answer
102 views

May I distribute a game engine that is based on textbook examples?

I have purchased several game programming books to start my journey as a game developer. One of them teaches its readers by building a game engine's parts in each chapter until finally you have a ...
0
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2answers
108 views

Resource management questions

Say I have this Cache<typename Resource> class template, which is a resource cache that contains an std::map<std::string, Resource>, mapping strings to resources. I can many different ...
1
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0answers
76 views

Dynamic objects in voxel engine

I am writing my own voxel engine based on cubes of different sizes and properties. In order to store and efficiently use voxels I implemented Sparse Voxel Octree storage. But I plan to have many ...
2
votes
2answers
194 views

why is my enemy AI is on air while moving?

In Unity3D I have created an enemy AI and applied a script for it to move and chase the player. But when moving, the enemy hovers in the air. My character also does not have rigidbody and he just has ...
0
votes
1answer
145 views

How to manage a vector of “Component” base class?

I'm trying to implement a component based design for a game i'm making. I decided to write it in c++ but i'm not very good at it. Coming from a java background I encountered a problem when trying to ...
0
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4answers
204 views

Implementation of collision in 2D platformer (C++)

My collision system for my game currently works fine, it lets me test a collision with an entity or specified rectangle... but that's not enough. I used to use GameMaker and it had collision events in ...
1
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0answers
124 views

How do I implement a sparse voxel octree?

I've been working on a voxel engine and I want to implement sparse voxel storage. As I understand it, it works a bit differently from a regular octree and has some neat performance increasing "tricks"....
0
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2answers
151 views

Getting if a key was released/pressed this frame (C++/SDL2)

Getting if a key is currently down is easy. Just return keys[scancode]: switch (ev.type) { case SDL_KEYDOWN: keys[ev.key.keysym.scancode] = true; break; case SDL_KEYUP: ...
0
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0answers
63 views

Predict ball movement after Collision in Pool Game?

Im trying to draw lines that predict the movement after the colliosn of 2 balls in a pool game. How do I do that? I heard it can be done via Raycasts, but how do I draw a line? Any tutorials, tips?...
0
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1answer
68 views

Move Ball to clicked direction

I have a ball as a sphere in my game and Im viewing it from top down view (birdseye). The ball is a rigid body. I want to achieve when I click somewhere on the screen, that the ball moves toward ...
2
votes
1answer
162 views

Need help with creating a stun gun. (Unreal Script)

I am fairly new to the programming world. I am currently at College and one of the tasks I need to do is create a "stun gun" or "freeze gun". Basically when you shoot a target (other player) i want it ...
1
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2answers
114 views

How to seprate the game from the game engine (specifically the game loop), into seprate projects?

I am trying to separate my game from game engine both written in Java. Currently they are in two separate packages but I would like to separate them into different projects. A main method in Project ...
3
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1answer
263 views

Swapping graphics engines

Is it possible, or even feasible, to have graphics engine completely decoupled from game logic? Why I ask is because I want to start working on a game (I'm a complete beginner in game development, ...
1
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2answers
58 views

Runtime Error dealing with SDL_Events

I do not know if this is the best way to handle these SDL_Events, but I am attempting to create a very abstract and generic code that will update my Game Object. Basicly I have a Scene which in my ...
2
votes
2answers
338 views

How to manage state in a component-based game engine?

I'm working on a small, data-driven game engine with some friends. We use GameObjects (a.k.a. Entities, Actors, or whatever it is called in your favorite engine) to represent every entity in the game....
0
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3answers
213 views

Grid Programming: Selecting a tile returns a negative coordinates

Let me explain what I am doing here. I created a class template named as PlayField where T is the type of the GridObject. I wrote this class using Cocos2dx. The point of this class is to make it easy ...
2
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3answers
171 views

How do game engines mitigate CPU cost for many trigger zones & entities? [closed]

It's a rather simple question, but a somewhat fundamental in computing in general. Let's say we have a player controlled character in an open world. The world is large. In this game-world we have a ...
0
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2answers
150 views

Game engine openGL operations scheduling

I'm making a custom engine and after much research, i realized that the state changes and the vertex or texture data loadings to VRAM are the most slow operations. So I want to optimize it making a ...
3
votes
1answer
220 views

Creating Scenes Programmatically From A Deployed Build in Unity

This is somewhat of an extension to this question: http://answers.unity3d.com/questions/513801/programatically-creating-entire-unity-games.html I have a client who would like to create an entire game ...
2
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0answers
57 views

Opengl Skybox Texturing Error

I'm using cubemaps to render a skybox in my game. Thinking this would be a simple task I threw some stuff together using the tutorials I found online, particularly this. Taking all of this together, ...
-2
votes
1answer
128 views

Libgdx array of Vector2 closest point

I have an array of objects. Their position is a Vector2 (x, y). I want to select the closest object, given a (x, y) coordinate (that represents an user touch on screen). Searching on web I found a few ...
0
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2answers
75 views

Is Global location using OpenGL bound by the shader?

I have recently started writing a game engine in C++ with OpenGL and using some tutorials online. So far from what I have seen, shaders are the way to manipulate an object's position in worldspace. Is ...
1
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2answers
139 views

Is it possible to run GLFW eventhough my graphic card(Nvidia) supports Direct3d API? [closed]

I have Nvidia 820M GPU installed in my windows 7 machine. In nvidia control panel it is showing it supports Direct3d API version 11. Am I able to run OpenGL applications(using GLUT,GLFW) on my machine ...
0
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0answers
69 views

Directx 9 Obj Model

There's is a error with my obj load/render that I can't solve I'm a newbie in directx 9, I'm trying to do this in the best way The model is not displayed properly, do not know if this correct model ...
1
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2answers
123 views

Updating children nodes in a game engine

I am writing my own small game engine (thin layer based on SDL2) in C++. My base class is Node (contains information on an entity's position, scale, rotation, etc.), And I've got two special ...
2
votes
2answers
243 views

How does a loop work in game engines? [duplicate]

Recently I started working on a game with the spritekit engine. My question is not about spritekit in specific though, but generally about game engines. When I write a loop and run it (eg while i &...
0
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1answer
82 views

What type of loop code on game engines? [duplicate]

Recently I worked on a game on Spritekit Engine. My question is not about spritekit, but generaly about game engines. When I write a loop code and run it (eg while i< 100000) my CPU usage goes to ...
1
vote
1answer
431 views

Does game engines (like Unreal, Unity, Crafty) add value compared to pure js frameworks (react, ember..) for my isometric tile-based games [closed]

I'd like to create a huge tile-based board (say 100K tile). The game does not have any advanced graphics (you don't see the players or landscapes), the main difficulty is that it has 100K tiles to ...
3
votes
3answers
1k views

How common are game engine bugs, and can I claim damages for them? [closed]

Are game engine bugs (in popular ones like Unreal and Unity, not some unknown ones) common? I know engines like Unreal, Source and Unity3D are well tested and maintained, but, for example, is there ...
1
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0answers
159 views

Is there any popular AI game engine? [closed]

Is there any sophisticated game AI engine that can save time on AI implimentation and provides strong and clever AI? The game genre is strategy, so AI should be strong. The game in some aspects is ...
0
votes
1answer
61 views

Selecting minimum GPU requirements for a video game a couple years out

How does one go about determining a good minimum GPU requirement for a game that development is starting on that will be published in approximately 2 years. On one hand you want as many people as ...
6
votes
2answers
842 views

Does SpriteKit follow the MVC pattern?

I am currently working on an iOS project called Old Frank that I have been trying to follow a MVC design pattern. The gist of it is. GameObjects(model) <- Scene(controller) -> Sprites "SpriteKit" ...
3
votes
1answer
96 views

Proper joystick input processing

Take for example, the Xbox One controller. XInput returns joystick input along 2 axis (x & y). I'm not sure if the hardware just measures voltage across 2 axis or not, I'm not very knowledgeable ...
1
vote
1answer
1k views

How can I do sprite batching in SFML?

I'm new to game dev and using SFML. I need to use lots of sprites at the same time, so I will probably need sprite batching. I know that sprite batching is used to draw multiple sprites with a single ...
-3
votes
1answer
295 views

Does Unity 3d cost money? [closed]

So I installed an Unity engine and I want to develop games by that. I heard that it costs 1500$ to program the code and post the game. Is that true? Did some1 developed a game with it and uploaded it ...
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0answers
75 views

XNA/DirectX: Advanced 3D Sound

Im currently working on an xna game with c#. Ive been looking into 3D Sounds recently as this is the next objective on my list. Ive found several tutorials online and they dont work to the standards ...
1
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1answer
85 views

State system and animation of derived classes

I'm trying to get some kind of state system for my game objects. I have a base Actor class that is derived by classes like Policeman, Informant or Brawler. Each of those classes describes different ...
0
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1answer
388 views

Distortion problem with perspective projection

For various reasons – partly educational, partly technical – I'm writing a 3D game engine from scratch, using OpenGL 3.0; aiming for Core Profile, eventually, so of course I'm using a custom matrix ...
0
votes
1answer
92 views

Does level streaming in games load directly from the HDD?

I wondered if the level streaming loads directly from the HDD. My first thought was if that would not be to slow, or if the chunks are just loaded into ram and asynchronously processed if appropriate ...
3
votes
1answer
164 views

How do I let a game support different rule sets?

I'm making a MUD game engine that supports D&D , Pathfinder and other tabletop-RPG rule sets. I am starting to build out how characters interact with the world (e.g. dialog, battle, searching for ...