Tagged Questions

A 2D rendering of an object in space.

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1
vote
2answers
116 views

SDL sprite animation problem

I'm currently drawing my character from a single file, and my sprite class handles it taking the file path as an argument. Now, I need to add a simple animation, cycling between two frames. The ...
2
votes
2answers
236 views

Expandable 2d environment by spawning and controlling individual tiles

what is the best way to implement an environment that is "expandable" in every direction so that when the player moves in any direction a new row or column of tiles that can be manipulated ...
0
votes
1answer
157 views

Making a sprite jump at a particular angle android

I am making a game in android Java, and I am kind of new in game programming. Please help me out. I have a sprite that is moving horizontally across the screen. I want him to jump when the use ...
0
votes
0answers
153 views

Sprite Rendering Cost Calculation

First of all asking before asking this question I have already read following post for the clearance of my mind. Sprite Renderer Texture 2D I want to change my background texture as per device ...
0
votes
0answers
23 views

libgdx : Scrolling background from spritesheet causes lag when sprite is repositioned… am I doing something wrong? [duplicate]

So, I use a sprite from a spritesheet to draw the background and repeat it. (I am drawing it twice) However, the moment that the background is re-positioned to make it look infinite, it causes a lag. ...
2
votes
1answer
767 views

Create sprite renderer using custom material

I have done following thing. Create Material Attach sprite with texture type as Texture Add sprite renderer component to game object Assign material to it that I create in last steps There is no ...
2
votes
3answers
1k views

Polygons vs sprites rendering performance in Unity for windows phone 8

I'm currently building a windows phone 8 game with unity, having 111 (no more no less) sprites being updated each frames. I have a strong overhead in the profiler (70% to 90% minimum) I tried the ...
3
votes
1answer
661 views

How do I make a 2D character aim their gun toward the mouse?

Heli Attack is a perfect example of the shooting mechanic I'd like. The character aims perpetually toward the mouse. What's going on here? From what I've read so far, you could separate the arm and ...
0
votes
1answer
235 views

How do I make a sprite blink on an HTML5 canvas?

I'm thinking of the flashing effect many games have when a character gets hit and takes damage. Something like overlaying a lighter color on visible sprite pixels for a second.
0
votes
2answers
378 views

Recommended way to handle sprite assets for different screen densities (Android)

I am currently working on a 2D game for Android. All of the images that I render were created as SVG's and then exported to PNG's which I have placed in my assets directory. These images are also all ...
1
vote
2answers
155 views

What is the correct way to draw layered Sprites in modern OpenGL?

So what do I mean by layered sprites? Layered Sprites are Sprites that consist of multiple layers, e.g. you have sprite sheets for the basic Body, the Head, Clothes, Weapons, etc. Well now I wanted ...
1
vote
1answer
187 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
3answers
223 views

Is it more efficient to encode rotation in a spritesheet or rotate at runtime?

I'm developing a game with JavaScript and HTML5 and I'm wondering about the performance implications of sprite rotations. There are two ways that I know to rotate a sprite: Rotate the actual sprite ...
3
votes
1answer
99 views

Pygame collision detection less frequent when objects are increased

I currently experiencing an issue in pygame where whenever i increase the number of objects e.g. platforms, rocks for a in range(150): rock = Rock(0,0) OR incresing the range which they spawn ...
0
votes
2answers
452 views

AndEngine - Smooth scaling on a sprite

I'm trying to implement a pinch zoom on a sprite. I would like to get an effect like the SmoothCamera, but on a single sprite. I've managed to pinch zoom on the sprite by changing its scale, but the ...
0
votes
1answer
108 views

methods for player interaction with world

What's the proper way, a proper way, or any proper way at all, to handle interactions between a sprite (usually a player) and another sprite (can be any other object)? (in a tile based world) i.e. ...
2
votes
1answer
6k views

How can I programatically generate sprite instances in Unity?

I want to create a block-based puzzle game that generates blocks as they are required, however I cannot seem to find any good imformation on how to do something like this using Unity's new sprite ...
0
votes
1answer
128 views

How can I support a background more complex than a flat color?

I'm a beginner at making 2D games. Up until now, I always created my games with a black background, or a fixed color. This is because my sprites always have a black (or a solid color) background, and ...
1
vote
1answer
135 views

How to prevent a sprite to move in an angle that will lead to collision

I have two sprites that can move in any angle. The sprites are rectangular. I created bounding boxes for both the sprites. These boxes rotate whenever the sprite rotates. They always surround the ...
2
votes
1answer
134 views

How do I rotate a bounding box together with a sprite?

I have a game object with a sprite that can rotate. It's a rectangle. I need its bounding box to rotate with it. How do I make sure that they can both rotate, but they're always both at the same ...
1
vote
2answers
151 views

Detecting collision of two sprites that can rotate [duplicate]

I have a problem with collision detection in a 2D Java game. Normally, what I would do is create a getBounds() method for an object that can collide with other objects. This method would return a new ...
1
vote
1answer
129 views

pygame - avoiding sprite 'jitters' on rotating the image

Is there a common trick for getting around sprites that are changing directions 'too quickly' and causing their sprite to display erratically? In this project, the player moves in 8 directions by ...
3
votes
1answer
275 views

Collision detection for sloping tiles

I've been looking into adding 'sloping' tiles into my platform game and my first attempt at collision detection with these tiles has produced some promising results (considering it's a first attempt), ...
1
vote
1answer
127 views

Telling my shader when to use which Texture

So I've just managed to get Texturing via GLSL shaders to work and i can pass a sampler2d textureHandler + my uv coordinates into my shader to specify the texture to be displayed on my Tiles. Now im ...
1
vote
1answer
110 views

UI in Canvas-Games [closed]

I am quite new to programming with <canvas/> and WebGL, but very familiar in HTML5. So far, I have made to render some entities on the <canvas/>. Next would be to add a simple HUD to it. ...
0
votes
1answer
129 views

Load all bitmaps at once or only when needed?

I am starting to get a pretty hefty amount of bitmaps in my 2d game for android. I load them all in 3 colors to save some memory but the thing is, I load all of them when "Start game" is pressed, even ...
0
votes
1answer
242 views

How should I determine the bounding rectangles for frames within a sprite sheet? [closed]

I have a spritesheet for a character. The spritesheet has several rows, and each row represents an animation. The elements within a row might vary in width. How can I load the different sections of ...
5
votes
1answer
734 views

How should I handle sprite creation for customizable 2D characters?

I'm want to create avatar animations (sprites) for a browser-based MMORPG. The player is able to customize the character, and the content changes often (new weapons, armors, and so on). How can I ...
2
votes
1answer
544 views

How to split a 2D sprite tile set into individual sprites?

I see a lot of sprite catalogs for games provided as single PNG image, like the one below. I'm interested if I have to manually create tiles from that, or if there's some program that can split it ...
0
votes
1answer
152 views

What size textures do I need for a 2D grid based game if my tiles are larger than textures I have?

I'm building a grid-based game for iPad, and for usability purposes I've selected my game grid to be built of 75x75 squares. However, so far I've seen that the majority of (free)texture catalogs I can ...
1
vote
4answers
483 views

How to set speed of circular motion

Edit 2 - clarification Just to clarify, the issue I have at the moment is how I specify a time (in seconds) for a complete revolution to occur. My delta is fixed and is 1/ticks per second (1/60). ...
2
votes
2answers
158 views

Replicating no. of sprites without letting the app to slow down and crash

Is it possible that if I'm making a a simple drag-n-drop game, does making a new sprite via constructor with texture as a parameter makes the game slower and depletes more memory until it crashes or ...
4
votes
4answers
5k views

Unity: Flip Sprite Direction

I'm toying around with the new Sprite class in Unity, and I'm trying to work out how to change the direction the sprite is facing ("flip" it). I'm sure I can most likely just scale it across the x ...
1
vote
3answers
192 views

Inconsistent sprite velocity?

I'm moving my sprites using the following formula: Code that I'm using (Only shows sprite's X position being calculated but Y position is also being done) spriteGridX = 240/480; //I start out with ...
2
votes
1answer
239 views

Is it possible to achieve a smooth sprite animation with a fixed 60 FPS using Java 2D?

I've seen a lot of different game loops, and before implementing anything complicated I decided to start with a capped 60 FPS. My run method looks like this in my game thread: /** * Fixed Frames Per ...
1
vote
1answer
234 views

How can I improve the performance of texture switching without resorting to atlasing?

I'd like to use texture images that are not a sprite sheet or other form of texture atlas, mainly because I'll be consistently adding and swapping textures while I figure out the direction my game ...
1
vote
2answers
181 views

How to draw a rotated pixel perfect line by hand?

If you have a pixel perfect line like 1:16 pixels, and you want to draw that same line rotated by a degree, for example 45°, what would be the correct way to do that by hand? I know it should have ...
11
votes
1answer
7k views

Can Unity 2D be used to make pixel-art games?

I'm looking at the new 2D features introduced in Unity 4.3, and I think I might be missing something. To me it looks like they are designed for high-res 2D games, where scaling the sprites is ok, but ...
0
votes
0answers
34 views

2D collision beetween a sprite and an array of sprites [duplicate]

I am creating a simple Android jumper (think Doodle Jump or Abduction) using libGDX so I can get started in game programming. My problem is that I need to figure out a way to check for collision ...
1
vote
1answer
374 views

Limiting the speed of a dragged sprite in Cocos2dx

I am trying to drag a row of sprites using ccTouchesMoved. By that I mean that there is a row of sprites (they are colored squares) lined up next to each other and if I grab one with a touch the rest ...
1
vote
1answer
1k views

OpenGL ES 2.0. Sprite Sheet Animation

I've found a bunch of tutorials on how to make this work on Open GL 1 & 1.1 but I can't find it for 2.0. I would work it out by loading the texture and use a matrix on the vertex shader to move ...
1
vote
1answer
297 views

2D fighting bounding boxes

I'm prototyping a 2D platformer/brawler game for uni and I'm having some trouble with creating collision/bounding boxes. This is most likely going to end up on a Vita so I do have some library ...
1
vote
1answer
187 views

Sprite rotation

I'm using OpenGL and people suggest using glRotate for sprite rotation, but I find that strange. My problem with it is that it rotates the whole matrix, which sort of screws up all my collision ...
0
votes
1answer
647 views

GLSL billboard move center of rotation

I have successfully set up a billboard shader that works, it can take in a quad and rotate it so it always points toward the screen. I am using this vertex-shader: void main(){ vec4 tmpPos = (MVP * ...
0
votes
1answer
95 views

How can I compute a velocity proportional to the difference between two hand positions?

I'm working on a project with the Kinect SDK and XNA 4. I need take the position of the hands and draw a sprite over it. I'm was doing it directly and because of that I get a "trembling hands" effect. ...
0
votes
1answer
126 views

Why does my goblin only choose a walk direction once? [closed]

I'm working on a simpe 2d canvas game that has a small goblin sprite who I want to get pathing around the screen. What I originally tried was a random roll that would choose a direction, the goblin ...
3
votes
2answers
1k views

How can i create sprite sheet from 3d model (3D studio max)

I built simple 3D model of a car, with simple animation in which it's wheels are turning. Now i want to create a sprite sheet, the only way i know how to do it, is to render manually 20 frames from ...
2
votes
1answer
377 views

Drawing Sprites at Correct Z-Index without A Sprite Map?

My game is in HTML5 canvas, but I assume this concept applies to any language. In the past I've used a multi-dimensional array to keep track of sprite positions. Here is a simplified example: [ [ ...
0
votes
1answer
82 views

Getting a sprite from multiple sprites for right material pattern

Not sure how accurate the question was but I'll put it this way. I'm developing a game where player will construct his/her own stuff, like bridge, building etc. using cocos2d-iphone and Box2D. First ...
4
votes
2answers
1k views

LibGDX stretching 2d graphics

I have a problem with stretching sprites in LibGDX. I have one png file for the sky in the game (1 x 1000px) and I want to render it 1000 x 1000px sprite.setSize(pixelWidth,pixelHeight); I want to ...