Simple and Fast Multimedia Library - a free, portable API that provides access to graphics, input, audio, etc.
0
votes
0answers
23 views
Creating a Color Picker?
I am trying to create a Color Picker similar to that of MS Paint.
Unfortunately, I can't figure out the algorithm for saturation.
This is what my current algorithm creates.
Anytime I try to ...
0
votes
1answer
55 views
Implementing collision response, current implementation does too many checks
I don't know how I should handle my collision response when collision between two entities leads to second collision with third entity.
Blue arrow is velocity of the rightmost entity and numbers ...
1
vote
1answer
153 views
Why do I have to run my 2D game at 300+ FPS for movement to be passably smooth?
I'm working on a simple game with SFML, and the only way to make the game reasonably smooth is to allow it the highest framerate my machine can handle (that is, giving it no limit). 60 FPS in my game ...
0
votes
1answer
114 views
implementing collision detection and handling for tiled 2D world with smooth wall sliding
Im using SFML 2.1 for graphics and my game structure follows SFML book quite closely (SceneGraph implementation etc)
My world consists mostly of characters (around 1-400, moving around) and tiles ...
1
vote
1answer
59 views
SFML image extension for best performance
I am using SFML library in my 2D game.
The Texture Class has a method to load an image from file:
Texture.loadFromFile("image.*")
Which file extension should I use to achieve best performance?
...
1
vote
1answer
48 views
Clearing an SFML scene with a partially transparent color
Is there way to clear a scene with a transparency (alpha) value, in pure SFML?
I'm trying to clear with rgba(0,0,0,128) so the previous frame still partially shows through, which would create a ...
1
vote
0answers
127 views
SFML 2.0 Too Many Variables in Class Preventing Draw To Screen
This is a very strange phenomenon to me. I have a class definition for a game, but when I add another variable to the class, the draw method does not print everything to the screen. It will be ...
0
votes
1answer
127 views
How do I get information about the level to the player object?
I have a design problem with my Player and Level class in my game.
So below is a picture of the game. The problem is I don't want to move on the black space and only the white space. I know how to do ...
2
votes
1answer
261 views
Improving Click and Drag with C++
I'm currently using SFML 2.0 to develop a game in C++. I have a game sprite class that has a click and drag method. The method works, but there is a slight problem. If the mouse moves too fast, the ...
-1
votes
1answer
116 views
Texture doesn't draw correct
I'm writing a game using SFLM and Opengl but when I create a terrain i got some OpenGl problems. I use heightmaps to generate a terrain but when I load the texture on it the texture is not correct ...
1
vote
2answers
259 views
SFML: Generate a background image
I want to generate a background, which is used in the game, on every instance of the game based on certain conditions. To do so, I'm using a sf::RenderTexture and a sf::Texture like this:
...
1
vote
0answers
54 views
Can SFML load anything other than RGBA8888? (RGBA4444, RGB565, etc.)
I have tried searching google, and there's next to nothing on there.
I tried searching the SFML forums, but still have no luck.
Am I missing it in the documentation somewhere obvious? Or does SFML ...
11
votes
2answers
622 views
Should I be using spritesheets, because of or despite of my vast number of images?
I am developing a 2D game, and I have a lot of sprites. I used 3D animations and models to render into 2D, to give them that "Fallout" or "Diablo" look to them. It is also easier than drawing by hand, ...
4
votes
2answers
280 views
How would I display a unit that is hidden behind another object
Right, I've tried searching for this but as you might be able to tell from the title, I didn't really know how to word it anyway...
In some games such as rts games, when a unit is hidden or half ...
2
votes
1answer
116 views
Development with multiple libraries
I'm almost fresh to the game development and I have one question about libraries.
If I choose one library, such as SFML, to develop the menu of my game, is it possible to merge with, for example, ...
-1
votes
2answers
208 views
Shooting many bullets toward the mouse position
I try to shoot a bullet toward the mouse position by this code.
float deltaX = mousePosition.x - (aircraft.getPosition().x + aircraft.getLocalBounds().width / 2);
float deltaY = mousePosition.y - ...
0
votes
1answer
185 views
How to use C++11 chrono header for a clock
In first, sorry for my bad english. :)
I'm making a game using SFML and C++11 new features, but I've got a problem with my custom Clock class (made to replace the SFML one).
When I get the elapsed ...
1
vote
1answer
138 views
Drawing a textured 3D object breaks SFML text render
I writing a OpenGL game using SFML.
I'm using the push/pop function to combine OpenGL with SFML like the tutorial SFML+OpenGL but, when I added textures to my model, the SFML text rendering appears ...
0
votes
2answers
235 views
SFML networking rts
You will be controlling only one person directly in the game. But, you can issue vague command like to build something here or attack at this square.
So I'm trying to make a multi-player roguelike ...
0
votes
0answers
60 views
SFML programs fails to debug with glslDevil
I'm testing the glslDevil debugger with a simple (and working) SFML application in Linux + NVidia. But it always fails in the window creation step:
W! Program Start
| glXGetConfig(0x86a50b0, ...
2
votes
2answers
162 views
Framerate-independent acceleration
Is this the right way, or at least a way that works, for dealing with accelerations in variable time steps evironments?
// Pseudo-code
void onUpdate() {
mySpeed += acceleration * ...
2
votes
1answer
138 views
Jittery Movement, Uncontrollably Rotating + Front of Sprite?
So I've been looking around to try and figure out how I make my sprite face my mouse. So far the sprite moves to where my mouse is by some vector math.
Now I'd like it to rotate and face the mouse as ...
2
votes
1answer
210 views
SFML RenderWindow Unhandled Exception
So I've been following an SFML tutorial but unfortunately, it doesn't seem to be working. The tutorial shows a RenderWindow as a global variable and then accesses it like this:
LevelState.h:
struct ...
11
votes
4answers
377 views
How to determine range of possible movement in turn-based, distance-based strategy game?
I'm creating a 2-dimensional, turn-based strategy game using c++ and SFML-2.0. Movement is distance-based rather than grid-based, with several different triangle-shaped pieces that, on a given turn, ...
4
votes
1answer
294 views
C++ SFML Box2D - Somewhat confused when it comes to syncing phyisical body with a render body
While testing Box2D with SFML I encountered something which confuses me: The relation between physical body centroids and SFML's sprite origin.
As an example I have a test class GameObject which is ...
0
votes
1answer
577 views
SFML fail to load image as texture
I have come to a problem with the code below ...
Using SFML 2.0
#include <SFML/Graphics.hpp>
#include <iostream>
#include <list>
int main()
{
float speed = 5.0f;
// create the ...
3
votes
1answer
128 views
Sfml: Sprite scale transformation animation
Is there any way to animate a transformation on sf::Sprite like setScale or setPosition?
ie: sprite.setScale(0.5f,0.5f);. I want the transition between normal and half scale be smooth.
Thanks!
0
votes
1answer
174 views
What happened to sprite::setSize in SFML2?
I'm porting one of my old projects to sfml 2.0, and I had a background that I scaled using
sprite.setSize(windowWidth, windowHeight)
Now, it seems like setSize has ben removed in 2.0, and I'm ...
3
votes
1answer
176 views
small independent game development on a virtual machine
I've been learning about OpenGL and SFML with c++ now for about 6-8 months, and would like to work on a small little personal game to put some of my skills to the test.
Now I want to kill two birds ...
3
votes
2answers
252 views
Screen effects and antialiasing
I have been working on a game for a while using glut for basic window creation.
I was rendering to an offscreen buffer so that I could implement various effects like screen bulging, motion blur, ...
-4
votes
1answer
166 views
C++ SDL/SFML advancing help [closed]
I've been playing around programming using SDL and SFML for a while now and done all the basic tutorials I can find(love lazyfoo).
but I'm stuck and not sure how to move on from simple games like ...
-1
votes
1answer
144 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 ...
-1
votes
1answer
257 views
I want to start making 2D Games with C++ or #C [closed]
I know C++ pretty well, I think - polymorphism, vectors, templates, and more.
I also know C#.
I want to program a 2D game, but not like those programs where you click a button or two, and you ...
0
votes
0answers
228 views
SFML tmx map loader for isometric view
To load a tmx map in SFML which way will be flexible and optimal , use sfml maploader to load the map (http://sourceforge.net/projects/tiledsfmlloader/) or use tmx parser and then load it into SFML . ...
2
votes
1answer
87 views
pytmx: issue trying to get the correct texture rectangle for sprite for objetcs on map
:D Hello :D
I am currently developing a game engine. I'm using maps designed with Tiled and I placed several objects on a test map to develop the feature of loading objects as sprites/entities and ...
0
votes
2answers
408 views
How does one load TMX files into a SFML game?
How does one load .tmx files from Tiled into a SFML game?
1
vote
0answers
527 views
2D water shader in SFML
I want to implement the algorithm for a 2D water surface described here and here.
Before somebody finds out, beats me up and deletes this, I'm gonna say it myself. I posted this question over at ...
4
votes
2answers
368 views
Game state management: the buck doesn't stop “here” soon enough
I realize there are already many Q&As on this site about GameState/GameScreen management, state machines, state stacks, etc. This question is meant as a follow-up:
Suppose hypothetically I ...
2
votes
4answers
453 views
How can I have parent-child transform in a component system?
Before when using inheritance, I could draw all my objects using this recursive function:
void Object::innerDraw(sf::RenderTarget& target, sf::RenderStates states)
{
states.transform *= ...
1
vote
1answer
333 views
Indoor 3D game worlds
I'm looking for a little direction.
I'm building a game engine as a part of my university project, and I'm having a little trouble about what to look for when it comes to indoor 3D game worlds.
Now ...
0
votes
1answer
473 views
Does SFML render it's graphics using OpenGL internally?
By that, I mean that SFML has an abstraction for OpenGL? Sort of like SDL's blit functions, but using OpenGL internally?
"Yes SFML uses OpenGL for all the graphical stuff. "
Received this comment ...
1
vote
1answer
311 views
OpenGL Depth Buffer/Coordinate issue with SFML
For some reason, my coordinate system in OpenGL is getting all messed up with depth. When I put something more than 1 unit away from zero (in terms of the Z coordinate), I can't see the object. ...
2
votes
1answer
306 views
SFML - Completely Unlimit Framerate
I am trying to completely unlimit the SFML framerate, so that as many frames will be displayed as possible. The reason for this is I want to loop through one section of code which calculates positions ...
0
votes
1answer
245 views
Picking a suitable resolution for a modern low-res game?
I'm working on a 2D game project right now (using SFML+OpenGL and C++) and I'm trying to figure out how to go about choosing a resolution. I want my game to have a pixel resolution that is around that ...
0
votes
0answers
162 views
Problem displaying tiles using tiled map loader with SFML
I've been searching fruitlessly for what I did wrong for the past couple of days and I was wondering if anyone here could help me. My program loads my tile map, but then crashes with an assertion ...
0
votes
1answer
142 views
How to achieve selection of a tile from a tile sheet based on an ID?
Let's say I have a tile sheet that contains 8 sprites per sheet. Each sprite is a tile of 30x30.
I wrote my own custom map parser/map loader however I'm having trouble extracting a certain tile ...
2
votes
1answer
730 views
Does SFML render graphics outside the window?
While working on a tile-based map I figured it would be a good idea if I would only render what the player sees on the game window, but then it occurred to me that SFML could already be optimized ...
2
votes
1answer
2k views
How to display text and numbers in SFML 2.0
I want to display some text and numerical data over my OpenGL scene in SFML 2.0. I've looked at the SFML 1.6 text tutorials here. But I can't get the code to work.
There is (as of yet) no text ...
7
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
1answer
620 views
Can't use SFML sprite drawing and OpenGL rendering at the same time
I'm using some SFML built in functions to draw sprites and text as an overlay on top of some OpenGL rending in an SFML RenderWindow. The opengl rendering appears fine until I add the code to draw the ...
