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.
7
votes
1answer
295 views
Implementing water effects (splashes) into XNA 4.0 game
I am creating a 2D XNA game and came across a tutorial on adding water effects (splashes) to an XNA game but after implementing it into my game I can't get it to scale down. Currently it takes up the ...
3
votes
1answer
514 views
Procedurally generated 2d terrain for side scroller on Sega Genesis hardware?
I'm working on the Sega Genesis that has a 8mhz Motorola 68000 CPU.
Any ideas on how to generate fast and decent 2d tile terrain for a side scroller in real time? The game would generate new columns ...
2
votes
1answer
135 views
2D Software Lighting Issues in Java
I'm creating a 2D top-down tiled game in pure Java and by now I'm trying to implement a way to do lighting.
First, some details on how I render: there is a screen class which handles all the ...
2
votes
1answer
196 views
Parallax background positions when jumping
I am currently building my first Mobile game. The concept is pretty simple, it's a sideways scroller.
I have implemented 5 layers to act as parallax scrolling, these are working quite well for ...
1
vote
1answer
301 views
Tongue pull effect
I've been searching on the net for several days and can not find nothing about this effect. Even a name for this effect. I want to make a character that can use his tongue to pull objects objects it ...
0
votes
1answer
155 views
Problem with enum as game state
In the current game I'm building, I'm having trouble moving from one game state to another. I'm using enum to control my states. As of now, this is my enum:
public static enum State
{
M_MENU, ...
0
votes
1answer
81 views
Incorrect colour blending when using a pixel shader with XNA
I'm using XNA 4.0 to create a 2D game and while implementing a layer tinting pixel shader I noticed that when the texture's alpha value is anything between 1 or 0 the end result is different than ...
0
votes
1answer
157 views
Collision with Two Angled Platforms
I've encountered a problem in my attempt to implement Collision Handling for a game I'm creating, involving a collision with two angled platforms.
I'm using GJK-EPA for detecting/handling collisions ...
-1
votes
1answer
73 views
How would you program sprite movement in a 2-D ariel view rpg game?
I'm relatively new to programming and I have recently programmed an RPG game in java.
Any tips on character movement with animations? I would like it to be similar to those of other rpg games such as ...
-1
votes
1answer
100 views
Drawing multiple sprites with clear screen for every frame
I googled with best of my skills, but I cannot find any relevant answer to my problem. I'm making a game with an isometric view. I need to draw multiple sprites on the screen and before switching to ...
3
votes
0answers
80 views
OpenGL: Filtering/antialising textures in a 2D game
I'm working on a 2D game using OpenGL 1.5 that uses rather large textures. I'm seeing aliasing effects and am wondering how to tackle those.
I'm finding lots of material about antialiasing in 3D ...
2
votes
0answers
378 views
2D Line drawing with Pixel Shaders
Recently I asked a question, what is the fastest way to render 2D lines using DirectX, and one of the answers mentioned this paper on Fast Prefiltered Lines which uses Pixel Shaders to accomplish ...
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
0answers
82 views
Constrained/penalized distance function
Assume a character is located on a n by n grid and has to reach a certain entry on that grid. Its current position is (x1,y1). Also on the same grid is an enemy with coordinates (x2,y2). Each step ...
2
votes
0answers
865 views
OpenGL ES 2.0 Camera advices and general thoughts for a 2D engine
I'm working on my first 2D OpenGL engine for iOs 5+ using GLKit (that's to say: OpenGL ES 2.0).
While I am on a good path and a lot of things are implemented and nicely working, I'd like to share with ...
2
votes
0answers
615 views
Collision Detection on floor tiles Isometric game
I am having a very hard to time figuring out a bug in my code. It should have taken me 20 minutes but instead I've been working on it for over 12 hours. I am writing a isometric tile based game where ...
1
vote
0answers
84 views
How do you display non-cutout transparent 2D textures with a depth buffer? (OpenGL)
I've been able to get my 2D renderer to display transparent cutout textures by testing the alpha of a fragment and discarding if it is less than 1 (or any fraction really). The problem is I want to ...
1
vote
0answers
126 views
iOS cocos2d - sprite gets stuck in collision detection
I'm developing a top down game in cocos2d and I have collision code that checks collisions between enemies and the player so that they don't go through each other. The code seems to work but the ...
1
vote
0answers
222 views
physics of 2D car racing game with heightmap
I want to develop a simple car racing game where the road is defined by a heightmap. It looks basically like this:
The player can use throttle and brake to control the car.
I'm wondering what the ...
1
vote
0answers
113 views
How can I use iteration to lead targets?
In my 2D game, I have stationary AI turrets firing constant speed bullets at moving targets.
So far I have used a quadratic solver technique to calculate where the turret should aim in advance of the ...
1
vote
0answers
60 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 ...
1
vote
0answers
46 views
Audio Panning using RtAudio
I use Rtaudio library.
I would like to implement an audio program where I can control the panning (e.g. shifting the sound from the left channel to the right channel).
In my specific case, I use a ...
1
vote
0answers
173 views
Outline Shader Effect for Orthogonal Geometry in XNA
I just recently started learning the art of shading, but I can't give an outline width to 2D, concave geometry when restrained to a single vertex/pixel shader technique (thanks to XNA).
the shape I ...
1
vote
0answers
916 views
bmGlyph alternative for windows (Bitmap font generator)
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 ...
1
vote
0answers
212 views
Dynamic 2D soft shadows with concave polygons?
I've implemented dynamic 2D soft shadows from this article on gamedev.net. It uses an image for the penubmra and is fast, physically accurate and looks good in most situations, so I really like the ...
1
vote
0answers
47 views
DirectWrite Producing Strange Artifacts?
I've written the basis to my UI system around Direct2D. I like it because it's fast and easy to use (even if I had to do some messy work to get it to work with DirectX11). However, I notice when using ...
1
vote
0answers
160 views
Sprite sorting issues
I apologize for the vague title, I'm not sure how else to phrase this problem.
I am using tIDE to assist me in my game's world development. To give a dynamic effect to map layers within tIDE, it has ...
1
vote
0answers
243 views
Need help with objects moving toward the player
I am making a 2D game with simple "gravity": everything is just pulled toward 0,0. The speed at which they accelerate towards it is GravityAcceleration up to MaxGSpeed.
I also want the player to be ...
1
vote
0answers
378 views
Problems with moving 2D circle/box collision detection
This is my first game ever and I'm a newbie in computer physics.
I've got this code for the collision detection and it works fine for BOTTOM and TOP collision.It miss the collision detection with the ...
1
vote
0answers
107 views
Fixed time step with Akihabara
How could I implement fixed time step with Akihabara framework? I would like my avatar to move by fixed distances of one block as in Supaplex.
0
votes
0answers
16 views
Modeling objects coming down from a networked pipe on the client?
I've got an entity base class that contains information about a particular object that both the server and client know about, they're in a shared DLL. It's just a basic outline of entity information ...
0
votes
0answers
74 views
What's the idea on the base of rendering camera on 2D platformers games?
I'm programming a 2D platformer game, and I am wondering about how the right to left scrolling of the camera is done in a game like this.
There is a background that need to be updated. There are also ...
0
votes
0answers
58 views
How to render alpha channeled animated 2D sprites in OpenGL ES 2.0
I searched, but I can't find specifically how to render animated 2D sprites with an alpha channel onto a 3D polygon, z=0, in OpenGL ES 2.0.
This is just a basic 2D concept, but since I'm using, ...
0
votes
0answers
84 views
SDL - Sprite “Ghosting”
I'm using SDL to create a 2D side-scrolling platformer, but I'm getting ghosting from the sprite. I'm not used to programming with graphics or SDL so excuse any stupid remarks I make.
Here's the ...
0
votes
0answers
170 views
Optimal OpenGL 2D Sprite Batching (Best Practice)
I am working on simple 2D engine using OpenGL (3.3+) for rendering and was wondering what the optimal method of sprite batching would be. I plan to put all sprites into one (or fewer) texture atlases. ...
0
votes
0answers
133 views
2D tile-based collision: avoid tunneling
We have a box that tries to move from A to B. In order to avoid tunneling we need to check if there is a collision in the path described by its four corners.
Let's focus on the bottom-right corner of ...
0
votes
0answers
39 views
Creating transparent image with localGraphicsConfig not always working
Consider using the following, commented-out code (https://github.com/kozie/twodee/blob/master/src/nl/kozie/twodee/Display.java#L135-L136).
This creates an empty image which i'm filling with a mosaic ...
0
votes
0answers
126 views
Stacking Drawing Matrix for SpriteBatch in XNA
I'm trying to make a 2D engine for XNA with SpriteBatch. My object unit is Entity, which can include other Entities as its children. However, when drawing them, the rotation and scaling stacking do ...
0
votes
0answers
300 views
Dynamic 2D (1D) map generation in libgdx
I'm currently brainstorming a game idea and I have stuck in one place. I'd like to dynamically generate endless map which looks pretty much like the one in game Hill Climb Racing (Android) or like ...
0
votes
0answers
144 views
Rotating towards thumbstick - XNA - Xbox360 controller
I'm doing a topdown shooter game where I controll my character with an Xbox controller. The problem I'm having right now is that when I'm rotating the character it feels like it sticks at 0, 90, 180 ...
0
votes
0answers
111 views
GameSalad | Draw lines and arcs
I'm new to GameSalad.
Can lines and arcs be drawn in GameSalad, respond to touch at a point, and be shrunk along their path?
0
votes
0answers
110 views
Rendering light rays that intersect the viewport but have off-screen sources (XNA)
I am creating a very simple 2D navigation app in XNA. The grid/world starts at (1,1) and carries on to infinity in the East and South directions. The view-port shows the world without any scaling ...
0
votes
0answers
749 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 ...
0
votes
0answers
286 views
XNA skew texture or spritebatch
I would like to make a 2D tile based game, but, to make it look a bit prettier, I would need to skew textures so that it would look more like a 2.5D game.
So I thought maybe I should skew textures to ...
0
votes
0answers
115 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
0answers
2k views
LibGDX Box2D Body and Sprite AND DebugRenderer out of sync
I am having a couple issues with Box2D bodies. I have a GameObject holding a Sprite and Body. I use a ShapeRenderer to draw an outline of the Body's and Sprite's bounding boxes. I also added a ...
0
votes
0answers
312 views
ParticleSystem in Slick2d (with MarteEngine)
First of all, sorry if this sounds very newbie-ish. I'm stuck at making a ParticleSystem I made using Pedigree to work in my game. It's basically an explosion that I want to display whenever an enemy ...
0
votes
0answers
833 views
Multiple spawned objects on collision - Corona SDK
Please help! I'm trying to spawn 5 balls one by one from the sky and have them disappear as soon as they hit the ground or when they hit another user-controlled object that's on the ground. The good ...
-1
votes
0answers
54 views
XNA/HLSL cone shape 2D light
I'm new to HLSL and I'm trying to create a simple light for my 2D game. I made a point light and it looks great. However now I'm trying to create a cone shape light but I just don't know how. can ...
-2
votes
0answers
26 views
Android Divide height evenly into tiles
I am writing a simple Sudoku app. I am overwriting onDraw to create the main grid of the sudoku game. The layout basically is :
Parent/Main Activity -> Contains 2 child views
-> SudokuBoard view - ...
