GRRLib Forum / Moving tiles bug

Cid2mizard · 2009-01-21 01:05:29

I have a bug with a 2 tiles next to the other across the screen, once in the coordinated (posax) >= 320, we see a shift of 1 or 2 pixels on the frame.

Code:

    i = 0;
    tempo = 0;
    float posax = -460;

    while (stape == 1)//Sprint latérale
    {
        GRRLIB_FillScreen(0xFF000000);

        GRRLIB_DrawImg(0, 140, 640, 200, tex_town1, 0, 1, 1, 255);
        GRRLIB_DrawTile(posax, 180, 230, 136, tex_sprinta, 0, 1, 1, 255, i, 4);
        GRRLIB_DrawTile(posax + 230, 180, 230, 136, tex_sprintb, 0, 1, 1, 255, i, 4);

        posax+=2;

        if (tempo < 4) tempo++;

        else
        {
            tempo = 0;
            i++;
            if (i > 3) i = 0;
        }

        //if (SND_StatusVoice(0)==SND_UNUSED) stape = 2;

        GRRLIB_Render();
    }

Any idea for this bug ?

NoNameNo · 2009-01-21 01:32:23

already talked about it in the forum, it's a libogc bug not a grrlib, a workaround have been found by a forum member and implemented in the svn. try grrlib svn and tell us if the bug is still here.

Cid2mizard · 2009-01-21 13:56:03

Yes with 3.0.5 alpha r14, i'vnt no bugs. Thanks

NoNameNo · 2009-01-21 14:32:06

np
take care, 3.0.5 is still under heavy dev and lot of modification will be made.
so stay tuned to make evolution on your code when you upgrade the svn version

Cid2mizard · 2009-01-21 17:41:20

no i have many bug with it, i store on 3.0.1

Edit : i have apply a spiffen correction on 3.0.1 and it's good

Code:

    //f32 s1= frame/maxframe;
    //f32 s2= (frame+1)/maxframe;
    //f32 t1= 0;
    //f32 t2=1;
    
    // Frame Correction by spiffen
    f32 FRAME_CORR = 0.001f;
    f32 s1 = (((frame))/(f32)maxframe)+(FRAME_CORR/(maxframe*width));
    f32 s2 = (((frame)+1)/(f32)maxframe)-(FRAME_CORR/(maxframe*width));
    f32 t1 = (((int)(frame/maxframe)))+(FRAME_CORR/(maxframe*height));
    f32 t2 = (((int)(frame/maxframe)+1))-(FRAME_CORR/(maxframe*height));

Last edited by Cid2mizard (2009-01-21 23:20:11)

#1 2009-01-21 01:05:29

Moving tiles bug

Code:

#2 2009-01-21 01:32:23

Re: Moving tiles bug

#3 2009-01-21 13:56:03

Re: Moving tiles bug

#4 2009-01-21 14:32:06

Re: Moving tiles bug

#5 2009-01-21 17:41:20

Re: Moving tiles bug

Code:

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