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

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17 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 ...
2
votes
1answer
862 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
46 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
165 views
+100

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 ...
3
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1answer
352 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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0answers
53 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
38 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 ...
-2
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1answer
195 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
311 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
145 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
2k 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 ...
6
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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
636 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
votes
1answer
691 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
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1answer
55 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 ...
2
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0answers
146 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 ...
0
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1answer
205 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 ...
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0answers
72 views

SFML transparent splash screen

How would I show a splash screen when the game starts? The splash screen would be an image with transparent edges: Notice how part of the splash for this game is outside the window, or should I ...
1
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1answer
176 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
votes
1answer
197 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
votes
1answer
276 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 ...
0
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1answer
97 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 ...
3
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5answers
304 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
97 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
87 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
70 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
220 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
62 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
115 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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0answers
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 ...
1
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1answer
82 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 ...
1
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2answers
206 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 ...
0
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1answer
108 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 ...
0
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1answer
78 views

OpenGL +SFML + GLFW3

I'am maybe asking a stupid question, but can we mix OpenGl + SMFL and add to it some GLFW in the same SFML window ?
2
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2answers
226 views

Collision detection via adjacent tiles - sprite too big

I have managed to create a collision detection system for my tile-based jump'n'run game (written in C++/SFML), where I check on each update what values the surrounding tiles of the player contain and ...
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0answers
199 views

Which will be better for a beginner, SDL, SFML or OpenGL? [closed]

I want to make games.For now simple 2D games, but I don't know from where to start. I "know" C++, but i havent worked with classes.I want to begin with game development and I searched in the internet ...
3
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2answers
312 views

How can I improve my collision detection's performance?

I'm new to programming and want to speed up the collision detection in my C++ 2D platformer game engine. Currently, only the player's collision detection works: Every frame, the player's update ...
2
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0answers
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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2answers
141 views

Synchronizing mob states in online multiplayer game

I'm developing an exploration-based platform game in which from the start there were plans about including local multiplayer support, but recently I've been considering an online multiplayer mode, ...
1
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2answers
2k 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
1answer
379 views

How do I make my SFML mouse position capture fast enough?

I'm new to game development and making a Pong clone in SFML. I am trying to set the screen's top and bottom as bounds for the paddle. Here is my attempt: #include "main.h" #include "objects.h" int ...
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0answers
134 views

How can I align a 2D object properly using tilemap collision [duplicate]

I'm making a mario clone, and I have been working on the collision but I can never seem to get it right. I started out with "true/false" collision, aligning the player at it's last position, and as ...
1
vote
0answers
239 views

Why are png files so much larger in RAM than on disk? [closed]

I have images that take up 119 MB on disk, but when I load them into my game, they use 850 MB of RAM. Why is this? How can I decrease the amount of RAM they use? My images are high resolution PNG ...
0
votes
1answer
112 views

GLSL/SFML - Only make portion of texture alpha

I'm trying to take a portion of the current texture and turn it to 50% transparent. I send in four values, signifying the rectangle I want to make transparent. It seems every time, however, that ...
0
votes
2answers
130 views

What interface should be responsible for specifying the initial position of a game object?

I'm making a simple Pong clone game and have been having an issue deciding on how my classes should handle the initial placement of an object. For instance, my Ball class's constructor is: Ball ...
-1
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0answers
135 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 ...
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1answer
484 views

Simple collision detection implementation [closed]

I'm making a game with C++ where the program extracts the lines out of an image (via openCV), stores them in an std::vector< std::vector< int > > and the builds a tile map out of it which is ...
1
vote
1answer
246 views

How to adjust a font to fit inside a speech bubble?

I'm creating a game that contains a speech bubble for dialog. The idea of this function is to allow one call to set new text in a speech bubble. The speech bubble will adjust in size of the new font ...
2
votes
1answer
175 views

How can I make an animation using arrays?

I want to take an array of sprites, for example sf::Sprite animation[3] = { stepLeft, inMiddle, stepRight }; and construct an animation by looping them. Is this possible? How do I go about it?
1
vote
2answers
1k views

C++&SFML Moving Sprites Smoothly in Tiles [duplicate]

As a student, I've always wanted to become a game developer. So far I've managed to learn the basics of C++ and SFML 2.1 For my first project, upon deciding to make a 2D RPG-ish game, I encountered a ...