3
votes
1answer
219 views

How to solve the big video memory requirements in 2d game

We are developing 2d game (Factorio) in allegro C/C++ and we are facing the problem with increasing video memory requirements as the game content increases. What we currently do is, that we gather ...
-4
votes
0answers
63 views

Super Meat boy engine [closed]

Apparently written over 18 months in C++, looks like DirectX also. I was looking at the Torque 2D engine source, and it's well, a lot of code. Would you say the SMB engine would be similar, I can't ...
0
votes
2answers
38 views

irrlicht: drawing two textures with draw2dImage issue

Im just starting out with irrlicht (and c++) for 2d development and I followed the 2d tutorial, so I am able to draw a 2d texture on the screen (With draw2DImage) this seems to work fine. So I made a ...
1
vote
3answers
184 views

How can I implement a main menu?

I have been following the tutorials at http://lazyfoo.net/tutorials/SDL/index.php and although they are all very well written and I have learned more than I would have on my own, I am not sure how to ...
0
votes
1answer
64 views

How can I move the view in a DirectX game?

I'm making a game in C++ using Direct3D 9. How do I move the camera at constant rate? I'm making a Flappy Bird type game and I'd like to move the camera forward through the level.
0
votes
1answer
85 views

What would be the easiest way to keep objects at a constant point on a 2D map, even when off-screen?

Like in Starcraft, where your army units stay put even though your view is moving around the map. I have a static tiled map that I made using Mappy and I can display that fine, I just want my ...
1
vote
1answer
39 views

Vertexquads are not being drawn in 2D space

I started teaching myself DirectX a short time ago and have come across a problem which I can't figure out by myself unfortunately. I'm trying to build my own font system, so I can draw strings in 2D ...
1
vote
1answer
70 views

Why does rendering a gradiented shape leave gaps?

Sometimes when I am drawing objects that aren't 'linear' (e.g. rounded edges, circles, ellipses, diagonal lines, etc) I this weird effect of some pixels at certain points not getting drawn. It's ...
-1
votes
1answer
38 views

Combine textures with coordinates [closed]

Is it possible to add one texture to another texture, at specific coordinates? Like if I want to add a small texture(16x16) to big texture (1368 x 768) with coordinates ( 100, 100) so the small ...
-1
votes
0answers
56 views

What's wrong with my tileMap implementation? [closed]

I need to implement a 2d platformer and decided to use a tilemap. I found this tutorial and tried to implement the second solution. The text says: Decompose movement into X and Y axes, step one at a ...
0
votes
2answers
153 views

How can I regulate update and event frequency?

I'm trying to create a small 2D RPG-type engine using C++, SDL/OpenGL and Tiled. My little demo looks very similar to a Pokemon or Zelda game. I was curious how to go about regulating FPS and how ...
2
votes
0answers
184 views

Help with 2D sprite instancing [closed]

Alright, so I'm pretty new to OpenGL programming. I've been writing my own engine, initially using the fixed function pipeline. I then did a 1:1 replacement of the fixed-function methods with shaders ...
0
votes
1answer
329 views

Directx 11 , problem positioning a 2D quad , center starting at bottom left and not top left

I'm following some tutorials of directx 11,and i was able to draw a quad, but my problem began when i was applying transforms , for some reason, my quad at position 0,0, start at bottom left of my ...
5
votes
2answers
427 views

Rotating object around moving object/player in 2D

I am trying to implement a camera which rotates around the world around the player. I have found many solutions online to the task of rotating an object about the origin, or about an arbitrary point. ...
-1
votes
1answer
81 views

Problem in animating polygon [closed]

Hi I am trying to move my black colored polygon downward. But As soon as I run my application my polygon gets invisible! I think My logic of move function is wrong. Can anyone help me out in figuring ...
0
votes
0answers
232 views

How do I use Opengl in conjunction with SDL?

I've been using SDL for a while in simple 2D games but have been limited as to what I can do graphics wise. I would like to start using Opengl. Does anyone know of any web tutorials for using Opengl ...
1
vote
0answers
212 views

2D Camera transformation sidescroller

i am currently trying to dive into 2D programming with DirectX, especially bulding a tile based sidescroller. I have worked with some chapters from a book (Advanced 2D Game Development) but always ...
-3
votes
1answer
111 views

Undefined fireball movement behavior

Demonstration video I try to do after the player shoot 10 times of fireball, then delete all the fireball objects and recreate a 10 new set of fireball objects. I did it but there is a weird bug ...
1
vote
1answer
607 views

How to set orthgraphic matrix for a 2d camera with zooming?

I'm using ID3DXSprite to draw my sprites and haven't set any kind of camera projection matrix. How to setup an orthographic projection matrix for camera in DirectX which it would be able to support ...
0
votes
1answer
227 views

Projecting world coordinates to screen coordinates issue - points disappear when origin not in view

I am trying to implement a 2d line drawing effect on a 3d mesh using Ogre. In order to do so, I perform silhouette detection on the lines of the object (this works) and then project these lines from ...
1
vote
1answer
100 views

2D Platform character getting “unaligned” with the map

I'm trying to make a 2D Platform game and so far I can have my character moving around in a tiled map and collisions are working too. So far so good. The problem I'm having is that the character can ...
-2
votes
4answers
300 views

Making 2D Games [closed]

I am starting out on making my own games. I am very interested in making 2D side scrolling games, such as SNES/Mega Drive games and eventually I want to create my own Metroid/Cave Story inspired game. ...
1
vote
0answers
305 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. ...
1
vote
1answer
143 views

Object Detection

I'm building a collision system for my 2D game, broadphasing (sweep and prone + pair detection) works. But I don't know how to separate pickup objects, tiles and the player from each other. My ...
1
vote
1answer
664 views

UML Class Diagrams for 2D platformer Games? [closed]

I have to develop a small arcade game in C++ for a college assignment using a 2D Game Engine my teacher coded. What would be the best way to make a UML class diagram for it? It's very basic stuff but ...
1
vote
1answer
286 views

Swarm/crowd movement with box2d?

Apart from using b2Body::setTransform(), are there other ways to move a body around while keeping its dynamics ? I want to move several bodies at the same time into one direction, pretty much like ...
-6
votes
1answer
98 views

Android Game an [closed]

I want to develop an android game (3D/2D).. and I don't have any knowledge about android app development. So can you suggest some helpful and understandable resources like video tutorials or head ...
-1
votes
1answer
141 views

My ClanLib based Keyboard Manager not working [closed]

I created a simple Keyboard manager to detect whether buttons are currently pressed, or if where pressed in that frame. It seems like it should work, yet it seems to not read anything. Here is my ...
3
votes
2answers
490 views

Collision detection for 2D RTS game in C++

I'm currently working on a real time strategy game in C++, and I need to implement a collision detection algorithm. I need to have a very efficient algorithm because this game will be running on ...
1
vote
1answer
467 views

PNG image as a level map for 2d game

I've been using a tilemap editor for making levels, but I was wondering if there was a way to use PNG images as the level map, as maps created in tiled editor are graphically uninteresting. ...
9
votes
1answer
2k views

Implementing a camera / viewport to a 2D game

What is the most practical way to implement camera/viewport to a 2D-game? I've read, that I should store the object world position instead of position relative to the screen? Current situation: I ...
2
votes
2answers
411 views

How to create realistic 2d lighting using colour temperature

I'm looking for a lighting algorithm that produces realistic lights expressed in kelvins, from about 2500k to 6500k. What I'm confused about is how to make the lights properly interact with the colors ...
0
votes
1answer
117 views

enemy behavior with boundary to change direction

I'm doing space shooter kind of game, the logic is to reflect the enemy if it hits the boundary. With my logic, sometimes enemy behaves like flickering instead of changing the velocity. It's like ...
1
vote
0answers
81 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 ...
11
votes
1answer
410 views

How can I cleanly and elegantly handle data and dependancies between classes

I'm working on 2d topdown game in SFML 2, and need to find an elegant way in which everything will work and fit together. Allow me to explain. I have a number of classes that inherit from an abstract ...
-2
votes
2answers
266 views

Whats the right program for me? [closed]

I would like to learn C++ so I can get a job in the game industry, but there are so many options it a little confusing. I know most of you will say I should read up on C++ before attempting to program ...
2
votes
4answers
611 views

Detecting long held keys on keyboard

I just want to ask if can I check for "KEY"(keyboard) that is HOLD/PRESSED for a long time, because I am to create a clone of breakout with air hockey for 2 different human players. Here's the ...
5
votes
3answers
1k views

What's a good entity hierarchy for a 2D game?

I'm in the process of building a new 2D game out of some code I wrote a while ago. The object hierarchy for entities is like this: Scene (e.g. MainMenu): Contains multiple entities and delegates ...
8
votes
1answer
2k views

Fast, accurate 2d collision

I'm working on a 2d topdown shooter, and now need to go beyond my basic rectangle bounding box collision system. I have large levels with many different sprites, all of which are different shapes and ...
2
votes
2answers
4k views

What 2D game engines are there available for C++? [closed]

I just realized there are not C++ 2D Game Engines that I know of. For example, something like Pygame in Python, or Slick2D in Java. We have the following: SDL -> Too low level, not a Game Engine ...
0
votes
1answer
2k views

How to create a simple side scroller game [duplicate]

Possible Duplicate: How to create games with scrolling? I'm still pretty new to game programming and any tutorial that I have worked with stuck to only games with the initial screen. I want ...
1
vote
1answer
357 views

2D SAT Collision Detection not working when using certain polygons (With example)

My SAT algorithm falsely reports that collision is occurring when using certain polygons. I believe this happens when using a polygon that does not contain a right angle. Here is a simple diagram of ...
10
votes
2answers
1k views

What should I worry about when changing OpenGL origin to upper left of screen?

For self education, I'm writing a 2D platformer engine in C++ using SDL / OpenGL. I initially began with pure SDL using the tutorials on sdltutorials.com and lazyfoo.net, but I'm now using SDL to ...
1
vote
2answers
140 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 ...
8
votes
1answer
988 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
5answers
2k 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 ...
5
votes
3answers
1k 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 ...
4
votes
5answers
898 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 ...
0
votes
2answers
1k views

2D Tower Targeting (Tower Defense)

so just to be more specific this question isn't in regards to how to target enemies or anything like that rather its purposed towards a specific targeting issue i have with me enemies in its current ...
3
votes
1answer
650 views

Recommended method towards making custom maps for a 2d game?

I am planning on making a 2D game, however different from my last personal projects I want this one to have enhanced graphics, with custom-designed levels. My previous 2d platformers were tile-based, ...