2D games are drawn in a two-dimensional space using two-dimensional objects. To represent its position, each game object will have an `x` and a `y` coordinate.

learn more… | top users | synonyms

2
votes
1answer
2k views

How do you implement 2D collision detection?

I would like to know the best or most efficient way to test for 2D collision. I am currently using AABBs, but the problem with this, is that your objects will be hitting things when they shouldn't. ...
1
vote
1answer
43 views

Move an object up while touch is active

I'm trying to move an object towards the top of the screen while the touch is active. This is my current code. When I am touching the screen, the object I'm trying to move just keeps it's place (and ...
-1
votes
1answer
68 views

Code explanation

Can someone please explain whats going on in this code written by Paul Irish I did not understand the draw(). function draw() { var time = new Date().getTime() * 0.002; var x = Math.sin( ...
0
votes
2answers
187 views

How can I support objects larger than a single tile in a 2D tile engine?

I´m currently working on a 2D Engine containing an isometric tile map. It´s running quite well but I'm not sure if I´ve chosen the best approach for that kind of engine. To give you an idea what I´m ...
0
votes
1answer
200 views

Scaling background without scaling foreground in platformer?

I'm currently developing a platform game and I've run into a problem with scaling resolutions. I want a different resolution of the game to still display the foreground unscaled (characters, tiles, ...
0
votes
1answer
167 views

Is there a standard way to track 2D tile positions both locally and on screen?

I'm building a 2D engine based on 32x32 tiles with OpenGL. OpenGL draws from the top left, so Y coordinates go down the screen as they increase. Obviously this is different than a standard graph ...
0
votes
2answers
281 views

2D Rectangle Collision

I want to make a small 2D game. In the game you can go in all directions(with the bird's-eye view) and can shoot. (A little bit like BoxHead http://de.y8.com/games/box_head_2play) My problem there is ...
0
votes
0answers
70 views

Picking tiles in an isometric diamond map

I am rendering a isometric map with the following code: for(var x = 0; x < MAP_WIDTH; x++) { this.map[x] = []; for (var y = 0; y < MAP_HEIGHT; y++) { var screenX = ...
1
vote
1answer
85 views

Fire Delay Timers

I currently have a turret that can fire projectiles. I can control the delay between shots (fireDelay), and I can control the time needed to reload the magazine of the gun(reloadDelay). I do the ...
0
votes
1answer
46 views

Help finding time of collision

I am making a simple game right now and am struggling with collision response. My goal is to someday be able to turn it into a 2D platformer but I have a long way to go. I am currently making this in ...
0
votes
0answers
20 views

unity button for 2d missing [closed]

I have read online that to create a 2d project in Unity, all you have to do is say New Project, and click the checkbox at the bottom. When I do this, there is no checkbox. What am I doing wrong? ...
13
votes
6answers
2k views

Creating a seamlessly looping 2D multiplayer level?

A discussion came up recently about how to create a 2D side-scrolling multiplayer game that can have an looping level design (Think of Starbound and how their worlds are looping). I thought the ...
1
vote
1answer
29 views

Spritekit - gradually apply force vector in different direction (space ship turning)

I have a space ship that I'm applying a force vector to using a joystick for control. I would like this to smoothly fly around when I'm switching directions.. Exactly like minisquadron if youve ever ...
2
votes
1answer
74 views

How should I set up 2D animations for weapons in Unity?

I have a character composed of several sprites (legs, torso, head, arms). The character has the ability to pick up weapons, which are of varied types. Each type of weapon has its own animation ...
0
votes
0answers
47 views

where to start game programming? [closed]

i am new to this site, i don't know what tag should i use fo this question!! so sorry if it's not relevant.i couldn't find a suitable tag for this question. i am a student of computer science.i am ...
1
vote
1answer
270 views

2D map/plane with nodes overlayed that supports panning, scaling and clicking on nodes

I'm trying my hand at Android development and seem to be running into an invisible ceiling in trying to get what I want accomplished. Basically I'm trying to create an app that renders a 2D surface ...
0
votes
1answer
64 views

How to properly generate walls simulating perspective around stone in a cave-like level made of squares?

Long story short. My levels tiles currently look like this: And i want them to look like this: My levels are designed as 400x400 squares of proceduraly generated 0's and 1's, 0 representing ...
1
vote
0answers
52 views

Is it possible to reverse perspective projection with simple scale and translate? [duplicate]

Basically I'm asking this question (which seems to have gone un-answered): How to do perspective projection “parallax” but without changing the scale or offset of objects? I'm using perspective ...
0
votes
1answer
45 views

Simultaneous Animation for a GameObject - Unity3D

Its my second week with Unity. I am doing a 2D game and I have a small GameObject which should change its sprite along with following a definite path defined in Animation Curves. I did both of them ...
2
votes
2answers
152 views

XNA - Making 2D Hexagons Connect With Each Other

Hey so I'm working on a top-down 2D strategy game in XNA, and the tiles are hexagons. I can't have a grid because of the game mechanics, so everything has its own location, and every tile object is ...
2
votes
2answers
219 views

Expandable 2d environment by spawning and controlling individual tiles

what is the best way to implement an environment that is "expandable" in every direction so that when the player moves in any direction a new row or column of tiles that can be manipulated ...
-1
votes
1answer
110 views

How do I find the tile I'm standing on?

I want to get the specific tile I am standing on. My Tiles are in an Arraylist so I can destroy them later. How can I do this? Here's my Level-class (where my Lists are): public class Level { ...
0
votes
0answers
37 views

2D Orthographic camera movement clamp in any orthographic size

I have a problem, which i currently can't figure out how to solve. I am trying to calculate a clamp value for world coordinates which have to respect any camera orthographic size.I bought an image ...
0
votes
1answer
89 views

How can I compute a velocity proportional to the difference between two hand positions?

I'm working on a project with the Kinect SDK and XNA 4. I need take the position of the hands and draw a sprite over it. I'm was doing it directly and because of that I get a "trembling hands" effect. ...
1
vote
1answer
132 views

How to compress Unity apk output?

I made a game with Unity but the size of .apk file got so large, it is about 70mb... Is there some way that I can compress my apk file?
0
votes
1answer
190 views

Simulating Shadows with Pygame

I'm trying to simulate shadows for a 2d topdown RPG, but I can't think of the best way to do this so far I've tried making copies of the original game entities and turning all opaque pixels black ...
1
vote
1answer
147 views

Animating feet seperately from the body

I have a character and I would like to animate a walking animation for it. However i get the following result when I animate it: (ignore the green lines/ markers/ sound) As you can see the foot ...
0
votes
1answer
92 views

Resolution independent physics

I'm making a game like Doodlejump but don't know how to make the physics scale on multiple resolutions. I also can't find anything related to this on Google. Right now I'm scaling the game using ...
0
votes
1answer
95 views

Camera controller in a 2d platformer

I'm basically bumming around using Unity's 2D creation tools, and I've managed to create a little platformer physics demo. There's a lot of work to be done, but I've got basic movement down, some ...
15
votes
3answers
2k views

Best way to store game-wide variables

I have an options Screen for things like Difficulty, Resolution, Full Screen, etc but I'm struggling to find the best way to store/obtain these variables at game time. The way I've currently decided ...
2
votes
4answers
12k views

What's the best program to learn/create 2d vector sprites? [closed]

I have Photoshop experience and a bit of drawing experience, and am looking to learn how to create sprites like this: http://www.lostgarden.com/2009/03/dancs-miraculously-flexible-game.html Any tips ...
0
votes
1answer
49 views

How are 2D transformation matrices applied to their targets?

I understand mathematically how transformation matrices work, in that a transformation matrix multiplied by a vector results in a new vector, and we use the matrices for rotation, translation, etc. I ...
0
votes
0answers
33 views

Web-Based Traffic Simulation based on Discrete Event SImulation + AI

I'm working on the application of 2D web-based traffic simulation. I am looking for a library that is suitable for my application. I'm making an application based on discrete event simulation, each ...
0
votes
0answers
26 views

Using a Quad to cut out a Layer?

Looking for options on this, but I wanted to take a Quad (or other shape), apply a material to it, and have it cutout an entire layer, to reveal the layers below/behind it. Sort of like a portal ...
-1
votes
0answers
15 views

Understanding the use of MTV for an elastic collision response

So, I'm trying to simulate polygon physics, both linear and angular. To calculate the MTV is easy in SAT (Minimum Translation Vector), and to use it to adjust position is also easy: PolygonA.center ...
3
votes
2answers
99 views

Why are my Box2D wheels slipping on ground?

I have a car, set up in Box2D as a rectangle connected with two wheels using WheelJoints: The wheels are defined as follows: FixtureDef wheelFixtureDef = new FixtureDef(); ...
0
votes
2answers
171 views

How do I add an image inside a rectangle or a circle in JavaFX?

Suppose we have a rectangle called r Rectangle r = new Rectangle(40, 20); and an image called image Image image = new Image("...src for image"); How do I fit the image inside the rectangle? ...
1
vote
3answers
102 views

2D Side Scroller Game Without A TileMap

I want to create a 2D side scrolling game in a similar style as the game "Castle Crashers". (Go to: http://store.steampowered.com/app/204360/ to see some pics of the game). I have experience ...
2
votes
1answer
115 views

Generating transformation matrix for 2D camera with pan/zoom/rotate

Question How do you implement a camera with pan/zoom/rotation for a 2d game? Is it acceptable to multiply together a series of transformation matrixes to generate a final transformation matrix that ...
8
votes
3answers
581 views

Can I jump from A to B?

I'm making some rudimentary AI for my side-scroller and I need to know whether an AI unit can reach point B from point A simply by taking a jump. Flight trajectory of my characters is a bit unusal as ...
1
vote
1answer
106 views

Is game maker studio actually flexible enough to cater to an avid programmer? [closed]

After I got burned by RPGMaker which seemed fine what with the semi-open Ruby-like engine until you encountered some nasty surprises like the draconian resolution limitations etc., I've become more ...
1
vote
1answer
33 views

Creating Direct2D PathGeometry from XAML format

Is it possible to create a Direct2D PathGeometry object from a XAML string (or from any other vector format) or do I have to create such a parser myself?
0
votes
1answer
227 views

Java 2D World: Convert from mouse screen co-ords to screen co-ordinates?

I have a 2D world background made up of a Grid of graphics, which I display on screen with a viewport (800x600) and it all works. My question is I have the following code to convert the mouse ...
0
votes
1answer
114 views

Grid collision - finding the location of an entity in each box

I am trying to implement grid-based collision in a 2d game with moving circles. The canvas is 400x400 pixels. Below you can see the code for my Grid class. What I want it to do is check inside which ...
2
votes
1answer
63 views

Where to implement textures for tiles?

So I just learned the basics of Java and was ready to try to create a protoype game in the style of Civ. So a tile&turn based game. I created an enum for the different tiles: public enum ...
2
votes
1answer
231 views

How to simulate wind in 2D

for a 2D scenario, I wanted to have a fan blow at an object and make it move with the "wind", how can I simulate the wind under these circumstances?
2
votes
0answers
91 views

Can the Shuriken particle system create particles with random shapes and sizes?

I want to create differently sized (but small, relative to the characters) dust clouds for player movement that move away from the player and fade away by shrinking. This animated GIF from Samurai ...
-1
votes
1answer
47 views

SpriteKit - How to detect if no Collision hapened ?

So i'm making a platformer game think ( doodle jump - mega jump ) but in top down view, i'm not making the player go up, i want it to go forward. My problem is i can't detect if he jump and misses the ...
46
votes
15answers
48k views

What tools do you use for 2D art/sprite creation? [closed]

What cheap/free tools do you use for 2D art and/or animation? I don't really like Gimp's interface, Paint.NET is limited and GraphicsGale is sort of archaic. Cosmigo ProMotion looks like it could be ...
0
votes
1answer
105 views

How do you create a 2d world then view it in 3d?

I have been learning OpenGL for a while now and have a pretty good understanding so far. What I would like to know is if I create a 2D game in Orthographic Projection, is it possible to switch to a ...