SDL: Clipping a Sprite Sheet from Left to Right

Posted by 0X1A on Game Development See other posts from Game Development or by 0X1A
Published on 2014-06-04T02:40:42Z Indexed on 2014/06/04 3:40 UTC
Read the original article Hit count: 230

Filed under:

sprites

|

sdl

I'm trying to get a sprite sheet clipped in the right order but I'm a bit stumped, every iteration I've tried has tended to be in the wrong order. This is my current implementation.

Frames = (TempSurface->h / ClipHeight) * (TempSurface->w / ClipWidth); SDL_Rect Clips[Frames]; for (i = 0; i < Frames; i++) { if (i != 0 && i % (TempSurface->h / ClipHeight) == 0) ColumnIndex++; Clips[i].x = ColumnIndex * ClipWidth; Clips[i].y = i % (TempSurface->h / ClipHeight) * ClipHeight; Clips[i].w = ClipWidth; Clips[i].h = ClipHeight;

Where TempSurface is the entire sheet loaded to a SDL_Surface and Clips[] is an array of SDL_Rects. What results from this is a sprite sheet set to SDL_Rects in the wrong order.

For example a sheet of dimensions 4x4 would load desirably as this: | 0 | 1 | 2 | 3 | | 4 | 5 | 6 | 7 | | 8 | 9 | 10| 11| | 12| 13| 14| 15|

But would be set as this order: | 0 | 4 | 8 | 12| | 1 | 5 | 9 | 13| | 2 | 6 | 10| 14| | 3 | 7 | 11| 15|

What should I be doing for these to be set correctly?

© Game Development or respective owner

Related posts about sprites

Combining multiple sprites vs separate sprites

as seen on Game Development - Search for 'Game Development'
I have a character which can hold ten types of weapons. Should I: Create ten sets of animations for the character with each weapon Create animations for each weapon, and programmatically draw them on the character Option 1 is simpler in general, but requires more work on the artist, and results… >>> More
Emulating old-school sprite flickering (theory and concept)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to develop an oldschool NES-style video game, with sprite flickering and graphical slowdown. I've been thinking of what type of logic I should use to enable such effects. I have to consider the following restrictions if I want to go old-school NES style: No more than 64 sprites on the… >>> More
Error in code of basic game using multiple sprites and surfaceView [on hold]

as seen on Game Development - Search for 'Game Development'
I am a beginner to android and i was trying to make a basic game with the help of an online video tutorial. I am having problem with the multi-sprites and how to use with surfaceview.The application fails launching. Here is the code of the game.please help me. package com.example.killthemall; import… >>> More
SDL2 sprite batching and texture atlases

as seen on Game Development - Search for 'Game Development'
I have been programming a 2D game in C++, using the SDL2 graphics API for rendering. My game concept currently features effects that could result in even tens of thousands of sprites being drawn simultaneously to the screen. I'd like to know what can be done for increasing rendering efficiency if… >>> More
Create a trailing, ghosting effect of a sprite

as seen on Game Development - Search for 'Game Development'
I want to create a trailing, ghosting like effect of a sprite that's moving fast. Something very similar to this image of Sonic (apologies of bad quality, it's the only example I could find of the effect I'm looking to achieve) However, I don't want to do this at the sprite sheet level, to avoid… >>> More

Related posts about sdl

Compiling SDL under Windows with sdl-config

as seen on Game Development - Search for 'Game Development'
I have downloaded NXEngine (The Open Source version of Cave Story). I have a make file in the directory, which I execute using msys. However, the make file uses sdl-config: g++ -g -O2 -c main.cpp -D DEBUG `sdl-config --cflags` -Wreturn-type -Wformat -Wno-multichar -o main.o /bin/sh: sdl-config: command… >>> More
How can I get the palette of an 8-bit surface in SDL.NET/Tao.SDL?

as seen on Game Development - Search for 'Game Development'
I'm looking to get the palette of an 8-bit surface in SDL.NET if possible, or (more than likely) using Tao.SDL. This is because I want to do palette swapping with the palette directly, instead of blitting surfaces together to replace colours like how you would do it with a 32-bit surface. I've gotten… >>> More
Using SDL to replace colors using SDL Color Keys

as seen on Stack Overflow - Search for 'Stack Overflow'
Hey, I am working an a simple Roguelike game, and using SDL as the display. The Graphics for the game is an image of Codepage 437, with the background being black, and the font white. Instead of using many seperate image files that are already colored, I want to use one image file, and replace… >>> More
Where is sdl-config installed on MacOS 10.6 (Snow Leopard)

as seen on Stack Overflow - Search for 'Stack Overflow'
After installing SDL and SDL-devel in MacOS X 10.6 (Snow Leopard), trying to configure some source code that requires SDL yields: checking for sdl-config... no checking for SDL - version >= 1.2.0... no *** The sdl-config script installed by SDL could not be found *** If SDL was installed in PREFIX… >>> More
Implementing the Security Development Lifecycle (SDL) at a Large Insurance Company

as seen on Dot net Slackers - Search for 'Dot net Slackers'
Find out how Cigital, an SDL Pro Network member, assisted a large insurance company adopt the Microsoft SDL. The case study describes both the business drivers leading up to the company's recognizing the need for incorporating the SDL within their development process as well as the initial roll out… >>> More