Simple and Fast Multimedia Library - a free, portable API that provides access to graphics, input, audio, etc.

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32 views

SFML game loop and FPS problems

first off, sorry if this is a silly question. I've been working on building an SFML engine and I've been very confused on the FPS, frame independent movement and game loop. Here's a link to where ...
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1answer
39 views

Sorting sprite's layers in isometric view

I'm making a strategy game with isometric view and I'm having some problems with deciding which sprite should be drawn first (I'm using SFML 2.2 as graphic library). I'm using std::sort to sort ...
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1answer
58 views

C++ Frogger game - Logs on Water bounding boxes?

I am making a Frogger game in C++ using SFML but have come across a problem. I have a block of water and log rectangles moving over it (All sprites) and would like the Frog sprite to do something when ...
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1answer
26 views

Extra sprite spawning when the enemies are redrawn SFML

I am making a game in sfml and at the moment when all of the enemies die. They are set to respawn however when this is happening they are respawning with one extra sprite than before. The code for ...
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1answer
18 views

Moving a Sprite using Mouse in SFML (setOrigin logic needed)

I trying to make a card game using SFML. I want to move the card relative to the position the player selects on the card. I managed to check if the card is pressed. However, when I click and drag, the ...
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1answer
391 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 ...
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1answer
1k 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 ...
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1answer
61 views

Handling (spawning/removing) entities in SFML

I am unsure which method to use to handle my enemies in SFML. The idea that I am trying to recreate is to spawn enemies every so many seconds. Initially I wanted to do this using a vector such as ...
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1answer
96 views

How can I do sprite batching in SFML?

I'm new to game dev and using SFML. I need to use lots of sprites at the same time, so I will probably need sprite batching. I know that sprite batching is used to draw multiple sprites with a single ...
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1answer
70 views

How can I hide game asset files in my release build?

My SFML 2.0 release build has a file path to game assets relative to the .exe file, so folders such as Fonts, SoundEffects, etc. are explicitly listed in Windows Explorer with the .exe. I'd like to ...
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2answers
71 views

How do I create and implement a sprite sheet for my SFML game?

I have a game I am currently working on, and I have created 6 16 frame animations for my player character. Currently each of these are saved as seperate .jpg files, which are about 1.5x bigger than I ...
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0answers
63 views

Preferred way to integrate box2d with SFML

I'm trying to integrate Box2D with sfml. My current solution is to have overloaded functions creating sfml shapes from box2d fixtureDef shapes. I store created sfml shapes under the name 'visual' in a ...
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9answers
9k views

How can you put all images from a game to 1 file?

I've just finished a basic RPG game written in C++ SFML, I've put a lot of effort into the game and I'd want to distribute it, however I've ran into a small issue. Problem is, I have well over 200 ...
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1answer
36 views

Using Box2D for soccer physics

I've learned quite a bit of Box2D and I've succeeded basic stuff concluding ball physics. I want to implement 'opposing forces', as the character kicks the ball with a certain strength, with the leg ...
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1answer
70 views

Drawing faded lightmap in 2D polygon

I have been making a 2D visiblity algorithm by following this tutorial http://simblob.blogspot.se/2012/07/2d-visibility.html I have managed to create the light vertices and it works fine when I draw ...
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1answer
46 views

How do I center the view around specific coordinates in SFML

I want to use sf::View in SFML in order to change the position of the view, such that the player sprite is always in the center of the screen. Thus I want to write a function which allows me to input ...
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1answer
50 views

Can I display text in SFML without setting a font?

I'm trying to render text without setting a font. #include <SFML/Graphics.hpp> #include <iostream> using namespace std; string culoare; int main() { sf::RenderWindow ...
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1answer
54 views

SFML - How do I create an OpenGL context before showing the window?

I want to create an OpenGL context to initialize some assets before actually showing the window with SFML. How can I do this?
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1answer
120 views

Static SFML 2.2 libraries and Code::Blocks on windows 7 [closed]

I am starting to program games for the first time, but I've been doing general programming for a couple years now. I have Code::Blocks, which I am fairly comfortable with, but now I am struggling with ...
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0answers
85 views

Scrolling background loop however produces little gaps

I have myself a parallaxing background, i'm using SFML to render my background, I have myself 3 sf::Sprites, each sprite has the width of 576, I create myself 3 sprites with x positions 0, 576 and ...
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1answer
937 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 ...
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0answers
123 views

Alternative to a timer in a separate thread in a turn-based game

I'm making a 2d turn based game and I'm having some difficulties with the timer itself. 3 characters vs 3 characters, two players. A timer giving them a chance to preform acts within a set amount of ...
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1answer
351 views

Problem with update/render in game loop (scrolling view, render interpolation)

I use SFML 2.2 and program a 2d prototype game (2d mario style where the camera follows the player). I am experiencing the buggy imagery during rendering, for example a chunk of vertex array blocks ...
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0answers
57 views

SFML - Rendering a torch with a fire animation [duplicate]

I have coded a 3D maze simulator in SFML using raycasting. However, I want to add a torch to the screen, so that the lighting seems more realistic. From my understanding, I would have to use ...
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0answers
88 views

C++ - SFML - OpenGL - GLSL - smooth waving texture

I have this shaders: Fragment: uniform float time; uniform sampler2D texture; void main() { float t = time; vec2 aux = gl_TexCoord[0].xy; // This would also make waving/deform the ...
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1answer
248 views

GLSL- How to change a certain color of a sprite, to another color passed into the shader?

There are sprites, with certain pixels being bright pink, and a shader dyes these pink or grayscale pixels to a custom color determined by the player. For example, a character looks normal except for ...
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2answers
392 views

How can I correctly use an unordered_multimap as entity and component storage?

The Setup I've made a few games (more like animations) using the Object Oriented method with base classes for objects that extend them, and objects that extend those, and found I couldn't wrap my ...
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2answers
178 views

Collision Direction Detection

I'm making an RPG game where players and enemies can collide with walls. Right now it pushes the player off the wall when he tries to 'go through' it. However, I detect which way he should be pushed ...
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2answers
3k 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 ...
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2answers
4k views

How do I load textures with SFML for OpenGL?

I'm looking at NeHe's texture mapping tutorial. It looks overly complicated for just loading a texture. Is there a way to load a texture in SFML and then use it in Open GL? I use SFML for my ...
3
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2answers
682 views

How can I keep a GUI on-screen without moving/resizing it according to camera motion?

I'm trying to make a GUI library with SFML, and everything's done except for one problem: making the interface stay still even when the camera moves or zooms in and out. This would be easy to fix if ...
2
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1answer
779 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 ...
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1answer
68 views

How can I fix user input for this pong paddle?

I have been having trouble with my pong paddle - It responds to user input as if it was typing. Sometimes, people try to react to KeyPressed events directly to implement smooth movement. Doing so ...
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0answers
198 views

How to read neighbor pixels in GLSL?

I'm using SFML 2.1, it's much more straightforward for me so I can jump directly to learning the shading language. I'm trying to do something similar to conway's game of life. I already learned that ...
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1answer
218 views

Why does my SFML game cause screen tearing on Linux?

I wrote a little game of a bouncing ball, using SFML and Box2D. On Windows, the graphics animate smoothly. However, on my Linux machine, the animation stutters randomly. To be precise, I get a ...
1
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1answer
180 views

Why is my Simplex Noise appearing in four columns?

I'm trying to make a Texture out of Simplex noise, but it keeps appearing like this regardless of how big or small scale is: The following code is used to produce the image's color date: private ...
6
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1answer
218 views

Can SFML load anything other than RGBA8888? (RGBA4444, RGB565, etc.)

I can't see this mentioned in the documentation. Am I missing something obvious? Or does SFML really give you no option, forcing everything to be loaded as RGBA8888? Searches on Google and the SFML ...
3
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1answer
289 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 ...
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1answer
116 views

Can't seem to get Sprite to face left in sfml c++

I am having some small issues getting my sprite character to flip around. Basically I have a character that can walk to the right.. I am looking to flip it so that it looks like it is walking left. I ...
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5answers
341 views

Is it bad practise to have an object for every tile?

In the game I am working on, many of my tiles must have special attributes (such as triggers when the player steps on them). I was wondering if it would be bad practise to create an object for every ...
2
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0answers
122 views

Problems with instaling SFML [closed]

I've followed the instructions on installing SFML on the website to the letter. But, I get this when I try to build the sample program on the same page using Code::Blocks. ...
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0answers
107 views

How do I scale a Spine animation at runtime?

The spine docummentation shows how to scale the skeleton when loading. Is it a must to reload the skeleton to scale the animation while playing it?
2
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1answer
114 views

How do I pause a single bone with spine?

I'm using spine along with SFML. I have a character that is always animated. When he shots, I set an animation that affects only his arm. The arm goes up, but I need to stop this animation in the ...
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1answer
265 views

Slight pause/delay when moving

I've been working on this little framework for my game today and realized that moving delays when moving around. I've used SFML before and have had the same problem, but never bothered to fix it. I'm ...
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0answers
85 views

OpenGL textures trigger error 1281 if SFML is not called

I am using SOIL to apply textures to VBOs, without textures i could change the background and display black (default color) vbos easily, but now with textures, openGL is giving an error 1281, the ...
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2answers
145 views

SFML: Monster following player on a straight line

I've searched for this and found a few topics , usually they used a function normalize and using simple vector subtracting which is ok , but how should I do it in sfml ? Instead of using: Movement = ...
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49 views

How does character creation work in 2D games? [duplicate]

My question is how does character creation work in (multiplayer) 2D game? For example player wants to have long yellow hair, black armor and white leggings. What should I do? Already have all ...
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1answer
87 views

Henry Hatsworth kind of blocks minigame, std::vector sorting or alternative?

I'm not sure if this is the right place to post this, or if I'm doing it right. But I believe I've kept to the rules. If not, please let me know and I'll remove my post or edit it accordingly. I'm ...
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2answers
280 views

Really simple count down timer

I'm making a little 2D tank game that fires bullets depending on where you click (This has been done and works a treat). I'm currently working on a timer class with a simple function that displays a ...
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1answer
114 views

How do I handle this type of collision?

So I've been messing around with simple game development for a while and just found an interesting game idea here . I'm using SFML 2.1 with C++ and so far I have a tilemap in a VertexArray using a ...