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

1
vote
2answers
2k views

Creating maps and tileset for a 2d java game

I'm not a completly beginner to java, so I decided to write a map loader and a tileset loader myself instead of using a tilemap editor like Tiled. I'm using Slick & LWJGL for my game. The plan ...
2
votes
1answer
163 views

Multiple images written and read from one meta-file?

Short version: I need a way to store multiple image files in one bigger file, to be used using C#, preferably easily compatible with XNA. The files will be read, written to, but also adaitional files ...
2
votes
1answer
443 views

android game-logic for shooter

Im creating a 2d game for android. I'll just get right to it. I have a sprite controlled by a joystick that needs to shoot, sofar Ive managed to get direction and movement on my bullet, but then I ...
1
vote
1answer
145 views

How to Use Images Instead Of Drawing Primitives [closed]

I want to build backgammon game. I have successfully built the board using primitives such as lines, triangles and circles. I'm curious whether it's possible to draw the board using images which will ...
0
votes
1answer
1k views

Calculate the angle between two 3d vectors: Function always returns 89.1-89.9

I have my own 2d game and I am attempting to calculate the angle between 2 GameObjects. My Problem: My function that is meant to calculate the angle(direction) between 2 Vector3's doesn't appear to ...
1
vote
3answers
1k views

How to efficiently manage animations and/or textures (resources) in a game?

I am using Java, particularly the Slick2D library. Seeing as this is my first game, I have no idea how I should manage the Animations and the textures in the game in a way to be both memory efficient ...
2
votes
1answer
2k views

How can I accomplish Pokemon-style movement over tiles in java?

I'm talking about where if you press a directional key once you walk over to the adjacent tile and can't do any other actions during the walk. I can get my character to move one tile width, but my ...
1
vote
2answers
151 views

Shape Centers as Vectors: Local space or World space?

Given a shape (any shape) in a 2D world where all positions, locations, and centers are two dimensional vectors, should the shape's center be described in local space or world space? EXAMPLE: World ...
2
votes
2answers
728 views

android 2d bullet-spawn (shooting)

This will be a quick question since Im pretty sure I'm overlooking something small that I for some reason cant see. My sprite is moved using a joystick, and I want my sprite to be able to shoot. I've ...
0
votes
2answers
565 views

When to Use Collision Detection Methods

I've done some research into different collision detection methods but I don't know when I should be using one over the others. Some I've seen are: Continuous Collision Detection (CCD) or Raycasting ...
2
votes
2answers
2k views

OpenGL ES high-quality 2D scaling

Let's say I'm making a 2D game and I want to implement a zoom in/out feature. Normally this is as simple as modifying the projection matrix to get more or less of the world to show. However, this ...
2
votes
1answer
952 views

Android 2D game, shooting and getting animation to stop

I'm developing a game as a learning-process, and since everything I do is new to me, I have alot of problems, usually I can fix it myself but right now I'm stuck and need help. Link to a recording of ...
2
votes
2answers
324 views

Should a 4x game use one class per planet type?

I'm try to make a small 4x game for my own educational purposes. Currently I have interfaces like IStarSystem which contains a list of IPlanets. My next step was to make classes implementing those ...
0
votes
1answer
760 views

Java2D Game Flickering

I'm in the process of trying to get familiar with making games in Java, using the Swing library. Coding my Snake game however, I've got to a point where the game is flickering/ghosting and I haven't ...
9
votes
1answer
1k views

What is the difference between an impulse and a force related to a physics engine?

What is the difference between an application of an impulse and an application of a force in relation to a physics engine?
3
votes
3answers
468 views

Tile based platformer, using larger tiles?

So for my tile based platformer, It has a grid of tiles Occupying 1x1 block for each one. However, What if I want larger tiles? Maybe doors, tables, etc. They wouldnt fit in a 1x1 tile, so what I ...
-6
votes
1answer
549 views

Choosing the right game engine [closed]

1 down vote favorite I'm trying to create a game in java inspired by a Gameboy Color Zelda game. I'm exprienced in java but not in game programming. I've been doing a lot of research on game engines, ...
6
votes
1answer
726 views

Creating custom collision map for 2D

I have a 2D level that I have built in my map editor, and I was wondering the best way to create a collision map for it. I have a collision map layer in my map editor, which saves each node (for ...
2
votes
5answers
3k views

How do i choose what technology to use for a 2D game like Pokemon? [closed]

I apologize in advance for the wall of text about to come. I've had an idea for a game for a while now, and am stuck at step 1 of game development: Choosing a language/engine. I've read a whole ...
2
votes
2answers
733 views

Do I have too many colliders on my screen?

I'm running into a situation where my frame rate drops from 70 FPS (on my desktop computer) down to 5 FPS (on my iphone) and I'm trying to understand why. At the moment, I'm only drawing simple ...
0
votes
1answer
208 views

Drawing at negative coordinates in XNA?

I am trying to make a 2D isometric RPG and I kind of hit a wall when it comes to lighting. I was thinking of using shaders, if I manage to understand them.The problem I am anticipating is the presence ...
1
vote
4answers
312 views

I'm making a board game: who should manage the player move if the board has specific locations for the players?

I know this is very specific question but imagine I have a board with spaces (like Monopoly) and a player that must go from one space to another after the dice are thrown. So my workflow: Player ...
2
votes
2answers
881 views

Changing sprite animation depending on direction

I'm working on an android game where my sprite is controlled by a joystick. I just added an animation to my sprite with 4 rows and 3 columns: Now I want to change the animation of my sprite ...
4
votes
1answer
2k views

The Physics behind 2D Platformer Games? [closed]

Is there any good book or tutorial that explains the physics behind creating a 2D Platformer game? Such as tile rendering, tile map reading, collision detection, camera movement etc.?
5
votes
3answers
2k views

What features do basic particle engines have?

I created a basic particle system for SDL in C++. It has some basic stuff like an emitter, as well as a simple particle class. It can load a image, or create a dot of a color. And that's it. What ...
1
vote
2answers
2k views

Trying to Draw a 2D Triangle in OpenGL ES 2.0

I'm trying to convert a code from OpenGL to OpenGL ES 2.0 (for the BlackBerry PlayBook). So far what I got is this (just the part of the code that should draw the triangle): void setupScene() { ...
1
vote
2answers
368 views

Techniques for lighting a texture (no shadows)

I'm trying to learn about dynamic shadows for 2D graphics. While I understand the basic ideas behind determining what areas should be lit and which should be in shadow, I don't know how I would ...
0
votes
2answers
214 views

Implementing a multishot powerup for a top down shooter

I have a top down shooter wherein I generate a projectile on each mouse click at the player's position and translate it in a straight line until it reaches the edge of the screen. I also have ...
4
votes
1answer
239 views

Create shape from points / lines in editor and mathematically calculate nearest points within shape

If I want an editor that accepts "points" of a minimum of three (a triangle) and I just add some points first, like this: how can I mathematically connect these corners (points) into an object of ...
3
votes
6answers
2k views

How to implement object velocity as a vector

I'm working on a Breakout game, and want to change the ball's movement code from how I currently do it, to something based on vectors (as I feel learning and implementing movement based on vectors ...
0
votes
1answer
445 views

Rendering Loop Problem (Java)

I'm not new to programming, but I am relatively new to game programming. I am trying to create a version of Breakout, as a good basic game to get myself introduced to 2d game programming. I currently ...
-2
votes
1answer
449 views

What's the best 2D animator?

What's the best 2D animator for creating sprite sheet animations for a game? Are there any that match this criteria? Cutout animation (I don't want to have to draw every frame) Exporting to images ...
2
votes
0answers
1k views

Why is my deferred lighting implementation so expensive?

I've implemented deferred lighting and I tried to put about 20-26 lights on the viewable space of my map, and it brings down the FPS from 61 to 28-31. It also makes my VGA temperature to go from 68°C ...
2
votes
3answers
618 views

Compressing 2D level data

So, I'm developing a 2D, tile based game and a map maker thingy - all in Java. The problem is that recently I've been having some memory issues when about 4 maps are loaded. Each one of these maps ...
0
votes
2answers
144 views

Collision on the first rectangle only - Why?

I've made a very simple collision detection, it works fine. However when i decided to load in all my rectangles into a list and then give each of them collision, it only adds it to the first one. Any ...
0
votes
3answers
2k views

How does changing weapons and character animation in 2d games work?

I know how I can make my character move by changing animation-frames. What if I want to use a weapon database? I want the character to fight with a bow and sometimes with an axe (different moves). Do ...
1
vote
1answer
2k views

2D Quads : Translation with OpenGL ES 2.0 on Android [closed]

I have a simple 2D engine that renders 2D textured quads, and right now I can scale the quad or rotate it, but when I try to translate it I have a strange distortion (the quad is squashed in the half ...
0
votes
2answers
385 views

How many Fringe/Base layers in a 2D map editor?

I'm creating a highly flexible 2D tile-based map editor in XNA to make some of my future projects easier (will work for side-scrollers and top-down games). This editor can work with any sized tile. ...
4
votes
2answers
493 views

Generate random starting points at same distance between them

Is there an algorithm to generate random 2D points that are at the same distance between each other? Useful for starting points. Check map: Don't be picky, I know in the image points are not at the ...
10
votes
3answers
462 views

How to simulate pressure with particles?

I'm trying to simulate pressure with a collection of spherical particles in a Unity game I'm building. A couple notes about the problem: The goal is to fill a constantly changing 2d space/void with ...
1
vote
0answers
2k views

bmGlyph alternative for windows (Bitmap font generator) [closed]

I have been using this tool (bmGlyph http://www.bmglyph.com/) to create fonts from apple machines, but now, I'm on windows and need a program with same / more features. The main features about this ...
9
votes
2answers
1k views

What is the best way to handle simultaneous collisions in a physics engine?

I'm writing a 2d physics engine in javascript so that I can learn more about physics in video games. I have it working correctly for rigid body collisions, except for if any body collides with two or ...
1
vote
2answers
2k views

Advanced Animation for 2d Isometric Game?

I need help with workflow suggestions for a flash game. (although the concepts would apply to other game engines, too). In a game like: Hero Academy There are several different character models each ...
1
vote
3answers
917 views

Easiest way to create a 2d game in Java? [closed]

I would like to create a 2d game in Java, but tutorials online for game libraries such as LWJGL are usually filled with errors once I compile the project. Most people do not explain very well, and ...
4
votes
2answers
1k views

How to create biomes

I am creating an 2D XNA Tile Based Platformer. I have a tile engine and a world/terrain generator. However, I am trying to create biomes or areas, For example, Desert in one part of the world, ocean ...
8
votes
4answers
3k views

How do I convert between two different 2D coordinate systems?

I'm trying to convert a coordinate from one coordinate system to another, so that I can draw it on an image. Basically the destination coordinate system is as follows: X range: 0 to 1066 Y range: 0 ...
4
votes
5answers
1k views

How to generate water pools on a 2D tile grid?

I'm coding a algorithm that generate a map, fixed size 2D matrix of tiles (32x32, 64x64, ...), for a game. The game map contains 2 elements, ground and water tiles. I'm trying to flood some water ...
4
votes
1answer
186 views

What is the optimal way for updating different entities in an engine?

EDIT: half of my question seemed to disappear, but thankfully, it was still in the clipboard. When I say entities, I mean instantiations of various classes in my engine (example class: ...
8
votes
6answers
4k views

Map with 20 million tiles makes game run out of memory, how do I avoid it?

While loading extra huge maps, the loading method throws out of memory exception where a new instance of map tile is created. I'd like to have whole map processed at least on server app (and on client ...
0
votes
1answer
1k views

Random terrain generation with caves

I am currently working on a small game that will generate a world with caves and entrances to the caves, something like Terraria if you will. Today I reached some trouble on the world/cave generation ...