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

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Filling polygons with texture/color using SDL2

I recently went on to making a 3D software renderer using SDL2 and Rust as a learning project. It has been going quite well, it can draw lines, polygons, and cubes. Now, it can only display ...
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2answers
115 views

How to fix my tile-based game's tile movement code ? (like a CandyCrush Style)

I'm currently creating a tile-based game like a CandyCrush style direction movement (no problem on only down movement) trying to smooth, not laggy tile movement with a board piece, and I'm writing a ...
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1answer
98 views

Java - Adjusting the speed of an object during movement

I am trying to get an object to move (on java canvas) in the same angle but at different speed within the X and Y axis. Below you can see how i have implemented the movement of the object. xPosition +...
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2answers
71 views

Rigidbody2D Circular Orbiting

I am trying to create a basic solar system in 2D. All space objects has CircleCollider2D on them (which are required for raycasting in another script). Currently planets are childs of stars, and ...
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2answers
201 views

How to resolve push block physics in a 2D side scroller puzzle

I've been working on a 2D tile-based side scroller puzzle game in Unity with obstacles such as doors, keys, fans, portals, etc., but one type of obstacle, push blocks, is giving me some issues. Here ...
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39 views

Adding a 2d collider causes incremented movement of a child, how to fix it?

I have 2d game, with a parent object with two sprite children, a man moving up and down with a flamethrower. Currently having only the movement script and rigidbody, I can move the parent easily with ...
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0answers
74 views

Responsive animation based on mouse position

I'm currently developing a topdown 2d rogue-lite game in Unity, where the combat will be mainly focused on archery and different adaptions based on archery. My problem is that I have a hard time ...
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1answer
168 views

Screen tearing in fragment shader on R9 380 GPUs

two players are encountering an issue with my game where the screen is tearing when it uses a fragment shader but it only seems to be doing this for players with a R9 380 GPU. Here is what it looks ...
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1answer
73 views

What is differential scrolling?

I have seen the term a few times (e.g. here). I tried looking it up but did not find much information. I thought it would be something like parallax-scrolling, but I have seen suggestions otherwise (e....
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2answers
170 views

Picking a 2D Box Collider with the mouse in Unity

I have a scene with a bunch of 2D doors that have 2d Box Colliders (no trigger) on them and that live on a Canvas. I would like to be able to click on them with the mouse, but have had no luck. ...
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2answers
4k views

How can I procedurally render irregularly shaped health bars?

The issue of the traditional rectangular or heart-based health bar is something well-understood and easily solved. But what is the accepted solution for more "creatively-shaped" health bars, like the ...
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1answer
71 views

How to calculate acceleration and deceleration

I have a car with speed x, and can accelerate at a rate of 0.5 m/s^2, and can decelerate at a rate of -0.1 m/s^2. Maximum speed is 20 m/s. To accelerate the car speed, at each frame I need to do: ...
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2answers
344 views

How can I render 2D ropes in Unity?

I'd like to be able to render flexible lines, or ropes, as below: I thought about using a Line Renderer but it doesn't have the flexibility to render arbitrary curves.
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1answer
89 views

Enemy shake/vibrate when following character

I am using the arongranberg A* path finding project to create way points for one enemy to follow the player. However, the enemy vibrates back and forward by about 0.1 - 0.2 unit distance when moving. ...
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0answers
21 views

Simplifying grid based intersection checking to not need 16 checks from each corner

I'm working on an "underground prisons and fire breathing lizards" inspired CRPG. So far I have implemented a "path drawing" method to, well, show the grid cells that would be involved if one were to ...
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0answers
75 views

MonoGame RenderTarget2D mipmapping fades textures when zooming out

I recently ported my XNA game to MonoGame. Unfortunately, some of the textures are being faded when: They are scaled-down from 32*32 to 16*16 When the camera zooms out, the texture fades from ...
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0answers
159 views

Unity2D Script to Throw Object to hit the TARGET everytime?

Hi I got a script that fires object at a target. In this instance, I have an enemy that fires an object towards the player! But I am stuck how can I get the required force to always hit the target no ...
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1answer
242 views

What is best method for 2D pathfinding in procedural world?

I have been researching path-finding for 2D games and would like to create a system that allows A* to perform as best as possible over a near infinite world. This system is intended to manage not only ...
2
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1answer
157 views

What is the advantage of pixel coordinates for a 2d game?

From the Godot feature list: Work in pixels as your units, but scale to any screen size and ratio. And reading the documentation they also use pixel coordinates to update the position of objects ...
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1answer
263 views

How to get a pixel color from a specific sprite on touch (unity)?

I have a 2 layers of a different sprites. How can i get a pixel color from lower sprite? I know how to get touch and world coordinates, but i have no idea what to do next. Touch touch0 = Input....
3
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1answer
67 views

Dynamically generating triangles from points

I'm working on 2D lighting. I have a list of points that have been calculated and when I draw lines from the light origin to the point it works. The problem is connecting the points into triangles. ...
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1answer
64 views

Hybrid App - Game Encyclopedia Image Asset

An in-game encyclopedia usually consists of entries and images for things related to the game. For example, pokemon's pokedex. Image of Pokemon, text description and so on. I've happen to encounter a ...
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2answers
137 views

How to display multiple textures with OpenGL without a texture atlas

I tried to dig into OpenGL a bit to use in 2D games (mainly because of shaders). There are multiple tutorials out there showcasing how to display and blend textures, and that's fine. But i haven't ...
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2answers
82 views

Achieve a red lighning effect in unity for a 2d game

Effect that im refering to: http://youtu.be/jaBY83WvS3M#t=05m36s How could I achieve this kind of red lightning/flashing/shadowy effect in Unity3D for a 2D game? I'm trying to think of a way but I'm ...
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1answer
49 views

Tile collision detection

Right. So I was making this simple game. The player is two tiles wide, and four tiles high. My current code is really buggy (it was better before my rewrite) Here it is: float newx = position.x +...
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2answers
55 views

Libgdx box2d bodies go through other bodies

I'm developing a game using libGDX and box2d. I am facing a problem that bodies go through each other... I'm moving the body using a TouchPad by setTransform. I think the problem is that I use ...
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0answers
66 views

Grapling hook in 2D platform game (C programing)

I'm new in the programming world and I'm studying programming for video games, and I'm trying to create a game for a class project. I need my character to throw a grappling hook into a specific "rock"...
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1answer
84 views

How can I instantiate in the current rotation in Unity 2d?

Backstory I'm currently working on a 2D sidescroller/platform game as a hobby, and I just started recently. Followed a few tutorials and such I managed to wrote my own code for basic command like ...
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1answer
83 views

2D sunrise in Unity

I see a lot of guides on how to create sunrise in 3D space, but I can't find much information on how to do it in 2D. In 3D, you rotate a lightsource around itself, but in 2D, I need to move the object ...
3
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1answer
178 views

2D grid based placement (limited to 1 tile in each direction) in Unity

I've been trying to get my head around this for hours now, I hope one of you is able to help. I'm trying to make a small game (2D using sprites) that allows you to place blocks (tiles). That is ...
6
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2answers
136 views

Unity 2D graphical glitch cuts sprite diagonally

While making a game in unity, we found a graphical glitch that only happens on one of our mobile devices (a htc) where the screen will be oddly sliced by a triangle as shown in this image; I've ...
3
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1answer
68 views

Most Efficient Way To Get Objects In A Rectagular Area - Unity2D

First of all, if you know a better way to do what i want to achieve please don't hesitate to suggest your own method. What i want to do is classic area selection in RTS games, which player drags his ...
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27 views

Libgdx moving a body sequence

How can I move a body (box2d) to different points in an order. Like first it moves to 100,200 then to 200, 450 and so on? I've tried actions(and actor) but I can't get the point where the body is ...
3
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1answer
67 views

Super formula on shader

I'm using Shader-toy to experiment and try to learn a bit the shader science. As exercise I wan to replicate some of the wikipedia math plots. I've started with a Super Formula. What I want to ...
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1answer
187 views

In Unity, how can I modify the shape of a sprite?

I am new to Unity and programming in general, however, I wanted to know how to change a sprite's shape. I want to do this while the game is running, so I was thinking about removing a set of pixels ...
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0answers
31 views

Do I restart the service?

I have a long running service in my game, that consists of two threads. //MY SERVICE: if(userEnabledProcessOne) //Shared preference value that I'm getting from the settings of my app based on a ...
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0answers
133 views

Why do characters only move in 4/8 directions in top games? [closed]

In many top down games, like Zelda (4 directions) There are only 4 or 8 possible directions. Why is this? Is it a design choice or a technology limitation? I can't think of any reason that even ...
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0answers
72 views

Modern OpenGL and SpriteBatching

I tried to find tutorials regarding SpriteBatch done in Modern OpenGL 3.0+, but failed to find any good resources so far. So can anybody please provide me a good resource/tutorial to achieve ...
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2answers
137 views

Technical names for camera styles in 2D games

In 2D gaming, the camera movement method has a lot do with the play style of the game. I'm not super familiar with the technical terms for camera styles, so I'm going to describe them in hopes ...
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1answer
73 views

How do I deal with AABB sweep ghost collisions?

I've been trying to wrap my head around this for some time now. I wrote an implementation of AABB sweep collision detection. I though I understood the idea but it didn't work as expected. I rewrote ...
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0answers
60 views

Sub pixel Sprite jitter on moving platform

I have written a simple 2D platform game in C++. Coordinates are stored as integers, not floats. To facilitate smooth acceleration, the positions and velocities of the game objects are stored in sub ...
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0answers
52 views

Problem with collision detection also affecting collision resolution

Hi I am making a 2d scrolling beat em up, I am working on the collision with obstacles like drums and platforms. So far I have the player jumping and falling from platforms but having problem ...
3
votes
0answers
203 views

How can I interpolate between two frames of a sprite-based 2D animation?

For example, I'm looking to animate at 60 frames per second, but clearly my artist isn't going to hand-author 60 frames of art for every second of an animation clip and even if he could, it would only ...
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2answers
82 views

Help with drawing a polygon with N sides [closed]

I am at university on my games development, and I have been given work to fill in an empty pixel plotter program using the methods they have supplied for it to teach us the algorithms used in 2 ...
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0answers
9 views

Creating a Shop in the Game for alternative skins Unreal Blueprint [duplicate]

I'm a beginner developer and I'm trying to create a game with some alternative skins. So when the player gets sufficient money, he goes to the menu, open the shop, buy the new skin and select to play ...
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0answers
158 views

How can I change the color of the default android drawable star?

I asked a question before and I got an answer to do this: Drawable drawable = getResources().getDrawable(android.R.drawable.btn_star); drawable.setColorFilter(Color.YELLOW, PorterDuff.Mode....
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0answers
38 views

Create a new layout?

After the user gets to a certain score in my game, I wan't to display a medal next to the users name. Doing this pro grammatically will make the image disappear after the user leaves the app. How can ...
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2answers
110 views

Will scaling images at runtime impact my game's speed?

I have read the android developer guide to working on different screen sizes. My question is, if I only provide one image in the drawable file, and let android scale it for me, will it impact the ...
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3answers
143 views

Get the tile that my mouse pointer is currently over?

I want to get the tile that my cursor is over in my game. I did some googling though most of the examples we're in other languages/libraries and if they weren't, they didn't work for me because I use ...
1
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1answer
41 views

How to add images?

I was adding images after reading in the documentation: This means that if you generate a 200x200 image for xhdpi devices, you should generate the same resource in 150x150 for hdpi, 100x100 for ...