[ODE] GIMPACT with doubles

[Remi Ricard]

Hi,

> If you're making a game, why do you need doubles?
>   
I'm not making a game ;-)

> Games don't need doubles. And monsters don't need AI,
> because they're stupid!!! :D :D :D
>   
And since this is available in ODE (the choice between double and float) 
why not make it available in Gimpact also.

>
> --- Remi Ricard <remi.ricard at simlog.com> wrote:
>
>   
>> Hi,
>>
>>     
>>> i tried to build ODE with doubles and gimpact
>>>       
>> enabled.
>>     
>>> (premake --target vs2005 --with-doubles
>>>       
>> --with-gimpact --with-tests)
>>     
>>> I got following errors:
>>>
>>> ode\src\collision_trimesh_box.cpp(1330) : error
>>>       
>> C2664: 
>>     
>>> 'gim_trimesh_get_triangle_vertices' : cannot
>>>       
>> convert parameter 3 from 
>>     
>>> 'dVector3' to 'float []'
>>>          Types pointed to are unrelated;
>>>       
>> conversion requires 
>>     
>>> reinterpret_cast, C-style cast or function-style
>>>       
>> cast
>>     
>>>   
>>>       
>> -- cut --
>>     
>>> Is there smething I'm doing wrong? Or if I need
>>>       
>> doubles I just cannot 
>>     
>>> use gimpact?
>>>   
>>>       
>> No, I'm, getting the same error.
>>
>> What I did was to #include <ode/config.h> in
>> gim_math.h and replace the 
>> #define of GREAL float
>> by
>> #if defined(dSINGLE)
>> typedef float GREAL;
>> #elif defined(dDOUBLE)
>> typedef double GREAL;
>> #else
>> #error You must #define dSINGLE or dDOUBLE
>> #endif
>>
>> as it is done in include/ode/common.h
>>
>> Then at 2 place you have to change float to GREAL
>> and everything compile 
>> correctly
>>
>> I will create a patch for that soon.
>>
>>
>>
>> The problem I see now it vec3f can be a double and
>> the "f" can be 
>> misleading.
>> Should the name change completely to use dVector3
>> (which is really an 
>> array of 4)
>> or have Gimpact have its own gVec3 ??
>>     
Remi