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Help => General => Topic started by: rush905 on August 21, 2012, 06:16:50 pm

Title: Physics/Colission
Post by: rush905 on August 21, 2012, 06:16:50 pm

Hi everyone, I'm hoping to write a 2D game in the near future, using SFML. I almost have rendering down, but now the problem I'm facing is learning how to get collision working. I can't find anything under the SFML 2.0 tutorials and was wondering if SFML even supports it. If anyone could point me in the right direction, I would be very grateful.

Title: Re: Physics/Colission
Post by: eXpl0it3r on August 21, 2012, 06:24:33 pm

SFML is a Simple and Fast Multimedia Library, thus it can handle all the stuff you can find on the feature list (http://www.sfml-dev.org/features.php). For all the other stuff you'll have to program things on your own or use a diffrent library. You can find some tutorials about collision in the wiki section (https://github.com/SFML/SFML/wiki) of SFML or just use google since the topic is generic and not bound to any library nor programming language.

If you need complex physics you can check out Box2D (http://box2d.org/) but the itegration with SFML isn't trivial for a beginner.

Btw. It's collision and not colission... ;)

Title: Re: Physics/Colission
Post by: rush905 on August 21, 2012, 06:30:32 pm

Quote from: eXpl0it3r on August 21, 2012, 06:24:33 pm

SFML is a Simple and Fast Multimedia Library, thus it can handle all the stuff you can find on the feature list (http://www.sfml-dev.org/features.php). For all the other stuff you'll have to program things on your own or use a diffrent library. You can find some tutorials about collision in the wiki section (https://github.com/SFML/SFML/wiki) of SFML or just use google since the topic is generic and not bound to any library nor programming language.

If you need complex physics you can check out Box2D (http://box2d.org/) but the itegration with SFML isn't trivial for a beginner.

Btw. It's collision and not colission... ;)

Ah, stupid typo, my bad haha.

Thank you for the links, I'll look into them.

Title: Re: Physics/Colission
Post by: rush905 on August 22, 2012, 06:59:04 am

Sorry for the double post, but I looked into the Wiki and found this:

https://github.com/SFML/SFML/wiki/SourceSimpleCollisionDetection (https://github.com/SFML/SFML/wiki/SourceSimpleCollisionDetection)

I included it into my project, but I get a ton of errors, most likely because it was written for a previous SFML. So I need help converting this old code from 1.x to 2.0, if that's in fact, what I need to do.

The source I'm getting errors in are at the bottom of the linked page above.

Also the errors I'm getting....:

   63   IntelliSense: class "sf::Sprite" has no member "TransformToLocal"   c:\users\nick\desktop\rendering\rendering\collision.cpp   118
   64   IntelliSense: class "sf::Sprite" has no member "TransformToLocal"   c:\users\nick\desktop\rendering\rendering\collision.cpp   119
   53   IntelliSense: class "sf::Sprite" has no member "GetSubRect"   c:\users\nick\desktop\rendering\rendering\collision.cpp   106
   54   IntelliSense: class "sf::Sprite" has no member "GetSubRect"   c:\users\nick\desktop\rendering\rendering\collision.cpp   107
   65   IntelliSense: class "sf::Sprite" has no member "GetPixel"   c:\users\nick\desktop\rendering\rendering\collision.cpp   127
   66   IntelliSense: class "sf::Sprite" has no member "GetPixel"   c:\users\nick\desktop\rendering\rendering\collision.cpp   128
   61   IntelliSense: class "sf::Rect<int>" has no member "Top"   c:\users\nick\desktop\rendering\rendering\collision.cpp   116
   60   IntelliSense: class "sf::Rect<int>" has no member "Right"   c:\users\nick\desktop\rendering\rendering\collision.cpp   115
   59   IntelliSense: class "sf::Rect<int>" has no member "Left"   c:\users\nick\desktop\rendering\rendering\collision.cpp   115
   52   IntelliSense: class "sf::Rect<int>" has no member "Intersects"   c:\users\nick\desktop\rendering\rendering\collision.cpp   94
   55   IntelliSense: class "sf::Rect<int>" has no member "GetWidth"   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
   57   IntelliSense: class "sf::Rect<int>" has no member "GetWidth"   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
   56   IntelliSense: class "sf::Rect<int>" has no member "GetHeight"   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
   58   IntelliSense: class "sf::Rect<int>" has no member "GetHeight"   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
   62   IntelliSense: class "sf::Rect<int>" has no member "Bottom"   c:\users\nick\desktop\rendering\rendering\collision.cpp   116
Error   30   error C2228: left of '.y' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
Error   34   error C2228: left of '.y' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
Error   40   error C2228: left of '.y' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   146
Error   42   error C2228: left of '.y' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   146
Error   28   error C2228: left of '.x' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
Error   32   error C2228: left of '.x' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
Error   36   error C2228: left of '.x' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   145
Error   38   error C2228: left of '.x' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   145
Error   24   error C2228: left of '.a' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   127
Error   26   error C2228: left of '.a' must have class/struct/union   c:\users\nick\desktop\rendering\rendering\collision.cpp   128
Error   17   error C2039: 'TransformToLocal' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   118
Error   20   error C2039: 'TransformToLocal' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   119
Error   1   error C2039: 'TransformToGlobal' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   20
Error   15   error C2039: 'Top' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   116
Error   14   error C2039: 'Right' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   115
Error   4   error C2039: 'Offset' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   55
Error   13   error C2039: 'Left' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   115
Error   6   error C2039: 'Intersects' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   94
Error   9   error C2039: 'GetWidth' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
Error   11   error C2039: 'GetWidth' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
Error   7   error C2039: 'GetSubRect' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   106
Error   8   error C2039: 'GetSubRect' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   107
Error   2   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   23
Error   27   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
Error   29   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
Error   31   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
Error   33   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
Error   43   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   156
Error   44   error C2039: 'GetSize' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   157
Error   3   error C2039: 'GetRotation' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   25
Error   45   error C2039: 'GetRotation' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   167
Error   46   error C2039: 'GetRotation' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   167
Error   51   error C2039: 'GetRotation' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   179
Error   35   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   145
Error   37   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   145
Error   39   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   146
Error   41   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   146
Error   49   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   175
Error   50   error C2039: 'GetPosition' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   177
Error   23   error C2039: 'GetPixel' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   127
Error   25   error C2039: 'GetPixel' : is not a member of 'sf::Sprite'   c:\users\nick\desktop\rendering\rendering\collision.cpp   128
Error   10   error C2039: 'GetHeight' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
Error   12   error C2039: 'GetHeight' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
Error   16   error C2039: 'Bottom' : is not a member of 'sf::Rect<T>'   c:\users\nick\desktop\rendering\rendering\collision.cpp   116

Title: Re: Physics/Colission
Post by: eXpl0it3r on August 22, 2012, 09:18:05 am

I don't get your question... ???
If you want to use SFML 1.6 code in your SFML 2 project it's obviouse that it won't work and that you have to convert it. ;)

Title: Re: Physics/Colission
Post by: TheVirtualDragon on August 22, 2012, 09:40:35 am

Converting can get tricky sometimes. I mean, I tried to convert one sfml based file into 2.0 and even after it compiled the program didn't respond properly.

But at a first glance, alot of those errors seem to be because of thr new casing system.
e.g

Code: [Select]

sf::Sprite::GetSize -> sf::Sprite::getSize
//1.6                             2.0


Title: Re: Physics/Colission
Post by: rush905 on August 22, 2012, 06:50:13 pm

Quote from: eXpl0it3r on August 22, 2012, 09:18:05 am

I don't get your queszmtion... ???
If you want to use SFML 1.6 code in your SFML 2 project it's obviouse that it won't work and that you have to convert it. ;)

Basically I need help with converting to 2.0.

Quote from: TheVirtualDragon on August 22, 2012, 09:40:35 am

Converting can get tricky sometimes. I mean, I tried to convert one sfml based file into 2.0 and even after it compiled the program didn't respond properly.

But at a first glance, alot of those errors seem to be because of thr new casing system.
e.g

Code: [Select]

sf::Sprite::GetSize -> sf::Sprite::getSize
//1.6                             2.0


I'll try that, see if it works.


EDIT: Well I did what you said, and now I'm down to 25 errors. Here's the source that I edited:

http://pastebin.com/gkMnPEpY (http://pastebin.com/gkMnPEpY)

And here are the remaining errors:

   4   IntelliSense: no instance of overloaded function "sf::Rect<T>::intersects [with T=int]" matches the argument list   c:\users\nick\desktop\rendering\rendering\collision.cpp   94
   13   IntelliSense: class "sf::Sprite" has no member "transformToLocal"   c:\users\nick\desktop\rendering\rendering\collision.cpp   118
   14   IntelliSense: class "sf::Sprite" has no member "transformToLocal"   c:\users\nick\desktop\rendering\rendering\collision.cpp   119
   1   IntelliSense: class "sf::Sprite" has no member "transformToGlobal"   c:\users\nick\desktop\rendering\rendering\collision.cpp   20
   5   IntelliSense: class "sf::Sprite" has no member "getSubRect"   c:\users\nick\desktop\rendering\rendering\collision.cpp   106
   6   IntelliSense: class "sf::Sprite" has no member "getSubRect"   c:\users\nick\desktop\rendering\rendering\collision.cpp   107
   2   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   23
   17   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
   18   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   143
   19   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
   20   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   144
   21   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   156
   22   IntelliSense: class "sf::Sprite" has no member "getSize"   c:\users\nick\desktop\rendering\rendering\collision.cpp   157
   15   IntelliSense: class "sf::Sprite" has no member "getPixel"   c:\users\nick\desktop\rendering\rendering\collision.cpp   127
   16   IntelliSense: class "sf::Sprite" has no member "getPixel"   c:\users\nick\desktop\rendering\rendering\collision.cpp   128
   11   IntelliSense: class "sf::Rect<int>" has no member "right"   c:\users\nick\desktop\rendering\rendering\collision.cpp   115
   3   IntelliSense: class "sf::Rect<int>" has no member "Offset"   c:\users\nick\desktop\rendering\rendering\collision.cpp   55
   7   IntelliSense: class "sf::Rect<int>" has no member "getWidth"   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
   9   IntelliSense: class "sf::Rect<int>" has no member "getWidth"   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
   8   IntelliSense: class "sf::Rect<int>" has no member "getHeight"   c:\users\nick\desktop\rendering\rendering\collision.cpp   109
   10   IntelliSense: class "sf::Rect<int>" has no member "getHeight"   c:\users\nick\desktop\rendering\rendering\collision.cpp   110
   12   IntelliSense: class "sf::Rect<int>" has no member "bottom"   c:\users\nick\desktop\rendering\rendering\collision.cpp   116

Title: Re: Physics/Colission
Post by: eXpl0it3r on August 22, 2012, 07:11:47 pm

For this case there's a documentation which shows you which functions exist and which don't...
i.e. all classes (http://www.sfml-dev.org/documentation/2.0/annotated.php), sf::Rect (http://www.sfml-dev.org/documentation/2.0/classsf_1_1Rect.php), sf::Sprite (http://www.sfml-dev.org/documentation/2.0/classsf_1_1Sprite.php), ...

getSubRect -> getTextureRect
getSize -> getLocalBounds or getGlobalBounds
...

Title: Re: Physics/Colission
Post by: rush905 on August 22, 2012, 07:26:53 pm

Quote from: eXpl0it3r on August 22, 2012, 07:11:47 pm

For this case there's a documentation which shows you which functions exist and which don't...
i.e. all classes (http://www.sfml-dev.org/documentation/2.0/annotated.php), sf::Rect (http://www.sfml-dev.org/documentation/2.0/classsf_1_1Rect.php), sf::Sprite (http://www.sfml-dev.org/documentation/2.0/classsf_1_1Sprite.php), ...

getSubRect -> getTextureRect
getSize -> getLocalBounds or getGlobalBounds
...

I'm aware of the documentation, but I don't see anything on what function names have changed to.

EDIT: Alright, I figured out a way to do what I needed. Thank you for all your help.