2D refers to two dimensional space where coordinates are represented with X and Y values.

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1answer
76 views

Generate a 2d mesh terain out of triangles (low details)

I'd like to learn a good algorithm to generate a 2d mesh made out only of triangles to be used as a terrain. Its not important to get a high detail terrain. It should just have a triangle looking ...
2
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0answers
156 views

How do i add a rain effect to a top down design game in Java, using no external libraries?

I'm creating a top-down game for my A-level/college computer science project, and I'm trying to implement rain. The game needs to be usable on any platform, so the use of external libraries is out of ...
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0answers
70 views

Storing game resources in the *.dat file format to reduce file size [closed]

How can I store sprites(png) or audio files(wav) in the *.dat file format?
2
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1answer
173 views

My player sprite get stuck to walls while moving along

Hello, My player sprite is moving along the wall (not even diagonal, just straight down) and get randomly blocked in the corner of some walls. By blocked, I mean that the Y movement is stopped. If ...
2
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3answers
184 views

How do you get the best rendering performance in a 2D Java Game?

I have seen a lot of tutorials, and they develop games with 2 different ways: The first one is using a virtual image (BufferedImage) and filling it's pixels. And displaying virtual picture. private ...
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1answer
228 views

How do I render a 2D overlay with DirectX 9?

I'm working in C++ with DirectX 9 on a 3D game, but I want a 2D overlay for rendering a HUD. I've heard that I could use D3DXMatrixOrthoLH, but I'm very confused on how to use it. I'm more familiar ...
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0answers
21 views

Unity - RageTools Performance

Has anyone used RageTools for Unity? What do you know about the performance? Is it more performant than using raster, for example with "puppet 2d" or the other way? I'm developing mobile games, so ...
3
votes
1answer
83 views

PhysicsJS on mobile devices: how to optimize for speed

I'm (physics n00b) developing a small animation (gamification) in a mobile HTML5 app (PhysicsJS, HTML5, Cordova, Ionic, JavaScript). This animation is derived from Basket of verlet constraints. This ...
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2answers
163 views

2D Collision at corners using C# - without xna or unity

I'm trying to make collision for a 2D game, the player (car) has to collide with the walls of the track when it hits them. I looked into pixel color detection, and X,Y -based collision (But since its ...
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1answer
68 views

Pseudo 3D Track editor [closed]

Does anyone know of a pseudo 3D track editor ? I now need one to design my stages, as manually trying to create segments, and position static and movable objects would be too time consuming.
2
votes
2answers
127 views

Rows of coins in libgdx?

I have my coin image in the assetLoader class, then I import it into gameWorld. My question is, how can I draw() rows of coins without having to write out 15 different coins? i.e., coin1, coin2, ...
2
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1answer
87 views

2D Change Velocity Based on Distance XY While Moving Parabolic Arc

What I'm trying to achieve is that the entity moves in a parabolic curve, and no this has nothing to do with gravity before you ask. I give the entity a target position which it should move to, but ...
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0answers
40 views

Black bar in beetween the image when Background move infinite

I'm trying to scroll my background forever and so I'm using the background image twice. When the first one goes off screen, it should relocate to the end of the second one. However, there seems to be ...
4
votes
0answers
115 views

Can a sprite be rendered with thickness in Unreal Engine?

Is there a convenient way to have a 2D pixel art image with transparency (not partial) rendered with a thickness in Unreal Engine? Paper2D does exactly what I want, except it's a flat plane. I'm able ...
4
votes
2answers
340 views

Procedurally generate rivers for 2-d heightmap terrain

I created an algorithm to procedurally generate 2d worlds based on a heightmap grid. (I used a 2d simplex noise algorithm mapped on the inverse of the distance of each pixel from the center, to ...
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2answers
74 views

How do I make sprites overlap eachother based on a layering system?

In Unity, I am building a 2D puzzle game, however I need to make sure that certain sprites are rendered on top of other sprites when they are above them. Here is an example switch (left) and block ...
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1answer
135 views

Most efficient way to calculate angle between two line-segments that do not necessarily touch each other

Although I found answers on calculating angles from vectors, I didn't find a specific way to calculate angles between line-segments that do not necessarily touch each other (I say "not necessarily ...
2
votes
1answer
219 views

Unity 2d diffuse sprites not rendering on mobile

EDIT: Just an update, did change from sprite/diffuse to Diffuse and zordering of my level using t2dtk map stuff was backwards. Like the camera flipped around so i had to shuffle things around on the ...
4
votes
2answers
64 views

2D Collision Box Clipping

There is this strange issue with the collision in a game I am making. When the player is slightly lower than a block it is colliding with from the side, the player ends up clipping to the top of the ...
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vote
2answers
71 views

Unity2D - Save everything in a scene before loading another and come back to it?

So I have am into this endless runner thing where everything is generated randomly from prefabs. Okay cool! But I am currently working on a bonus collectible which takes the player to another scene. ...
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votes
2answers
121 views

What software to use to make games for free with commercial use? [closed]

I am going to make a 2D game, I need free software for my team of five or less people. I should be able to sell in-game currency but the game will be free. The software should be able to compile the ...
1
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0answers
40 views

lwjgl Move 2D projectile in direction from coordinate pair

So I am having issues getting my projectile to move properly at all, the help I have found have only made this worse and have not actually given any heading as to what I am doing wrong. Can anyone ...
3
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1answer
166 views

How can use a 3D map with 2D characters (Unity)? [closed]

I tried to search something about it but I can't find any complete or well-explained tutorials about how to use a 3D map with 2D characters and items, like Ragnarok or Final Fantasy Tactics. If there ...
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0answers
38 views

Change gui in java game

im making a 2D Server/Client game, i have very little to no problems with the server but now i wanna work at the client. I think about using a JFrame and all the other gui classes/methods. My question ...
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1answer
64 views

2DRaycast is shooting slightly in wrong directions

I wanted just a simple 2DRaycast, which points from my character to my mousePointer. So I found the following code in the Internet, most people seem to use it like that. So I tried it, but it isn't ...
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2answers
562 views

Unity 2D Alpha cutout layer for Sprites

I'm trying to make a simple Fog of War effect for my 2d game, similar to these: . I want to have a sprite layer of black and then have a sprite to cut out itself from the black layer, leaving a ...
3
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1answer
177 views

How can I exploit multithreading in collision resolution?

I'm trying to speed up my collision resolution by using multiple threads. I'v read through Box2D's source code and while it was challenging and educating, it didn't really point me to how I could use ...
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3answers
212 views

What are the basic equations in 2D physics collisions?

I'm making a 2D fighter, and I have gotten a basic engine, but right now I need to add the collisions, but I'm sure a basic AABB check will not be enough. I'm sure it needs some basic 2D physics ...
6
votes
4answers
379 views

Rotating sprite around another sprite

I am building a pool game, and I want to make the cue rotate around the white ball. Here is the live code: http://199.26.84.223/nocol.html Here is the code for the white ball: balls = ...
4
votes
1answer
607 views

Tetris: 2D Rotation Matrix?

I'm creating a Tetris clone right now. I've got the tiles of tetromino stored as an std::array<tile, 4>. Each tile holds its (x,y) coordinates relative to the piece. For example, the t-block ...
3
votes
1answer
87 views

Collision happens even though the objects are not colliding according to what we see

I'm trying to build a pool game as my first phaser project. The biggest challenge today was to make the cue rotate around the white ball. After hours of searching and not finding anything useful ...
3
votes
1answer
198 views

How to implement 'Fog of War' in SpriteKit or Cocos2D?

Take a look at the image below from the game Warcraft 2. There's a darkened area (like a fog) that represents the limits of the 'field of view' -- to the effect that you would not see any enemy ...
3
votes
1answer
414 views

Switching from Arcade to P2 physics in Phaser

so i just started using phaser for test i've followed the tutorial in the phaser website (making-your-first-phaser-game) everything is clear no problem . but since i've making a pool game i need ...
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1answer
95 views

Transform.LookAt rotates the sprite and collision not triggering

I've applied the below script to a gun object to instantiate bullets to the direction of the mouse position. The bullet collision is not getting triggered since the bullet has been rotated. How to ...
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0answers
54 views

Is this a good way to “get rid of the sprite shakes” for my sprites that “target” other sprites? (XNA)

I'm relatively new to XNA, but very proficient with C#. I want to know if this is the best way to solve the sprite shaking problem. I had a sprite class that can target a place/other sprite on the map ...
1
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1answer
39 views

matrix transformations 2D - place in world-space but keep size in “object/screen-space”

I have a question concerning matrix transformations. I Think I know how it could be done, but Im not sure its the best/correct way to do it. I want to apply World translations and rotation to an ...
1
vote
1answer
87 views

Python - Holding down key to move a sprite works, but only in one direction [closed]

I've been testing out movement for a fighting game that I'm creating in Python. The problem is that when I try to move the sprite, it moves correctly to the left, but only ever works in that ...
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0answers
60 views

2d stealth-type collision

I'm curious as to how stealth games work. I am working with 2d right now to get the hang of it, and so far I have come up with the following ideas. create a bounding circle around the player/enemy ...
0
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1answer
85 views

Certain Unicode Characters not displaying when setting text to TextButton in libgdx

Ok I am trying to do a word game much like Hangman Pro but for a different language(specifically amharic) using libgdx . And I have got a list of words saved to text file and I have taken care of BOM ...
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1answer
60 views

In Physijs, how do I detect that an object is still?

I have a cylinder that simulates a flipping coin. I am using Physijs. The coin might bounce off the surface multiple times before stopping. How can I know when the coin has completely stopped moving?
5
votes
2answers
127 views

How do I turn an image into a Box2D physics object?

I'm using Box2D for a Game Programming course, and I was wondering if it is possible to choose the best shape and size of shape for the rigidbody/fixture for a sprite based on its transparency. I've ...
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vote
1answer
62 views

Unity LoadLevel Loads Late

We are developing a 2D game for Android on Unity. It's our first project, we don't have a lot of knowledge on Unity. We have 2 scenes, in first scene there is only a "Play" button. When that button ...
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vote
1answer
452 views

Monogame shader not working

I'm trying to use this this tutorial in monogame, but the effect does not work, only renders a black screen. Everyhing by itself renders just fine, I looked at the render targets if they get drawn to, ...
0
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4answers
234 views

Is database necessary? [closed]

Hi I have studied c# for good few months and I'm at intermediate level at the moment. And few days ago I decided to make simple 2D Games like "Mr Jump" after studying Unity. So my question is as ...
0
votes
1answer
96 views

How do I create a playing field of collapsing bubbles, as in Tsum Tsum?

Tsum Tsum App is a pretty interesting game and I am wondering how the main play area's data structure is, erm, structured? Characters are stacked, disappear as the player swipes over matching ones, ...
15
votes
2answers
2k views

How to avoid ghosting when pressing multiple keys?

I am working on a 2d side-scrolling pc game that uses SFML game library. The problem that I am not able to solve is that in many keyboards combination of three or more keys (like w + d + k) is not ...
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vote
1answer
147 views

Libgdx are textures off screen rendered?

Let's say that my code looks like this: OrtographicCamera camera=new OrthographicCamera(); camera.setToOrtho(true, 100, 150); SpriteBatch spriteBatch=new SpriteBatch(); ...
2
votes
1answer
141 views

In a tile-based MMO, how do I decide which players need to receive what updates?

I am planning a tile based MMO, like Tibia or top down Minecraft. I'm using a client-server model. I've got almost everything figured out, with a notable exception of state updates. When information ...
2
votes
2answers
179 views

Pseudo 3D curve problem

I've converted CodeinComplete's Pseudo 3D road routine to use SDL2 - unfortunately for some reason the curves are incredibly jarring (both entering and leaving it). I've also converted it to ...
2
votes
1answer
176 views

Unity2D 5 - Flickering sprites on Android

So the game had been working fine for a few days on Android phone without any issues. Today, after adding some scripts and tweaking the game a little bit (tweaks which have nothing to do with the ...