Special Features - Special features of Snake Tail Hack

This sample was created in order to meet the following requests. Please play with it and re-create it.

I want to display 2D images as well.

• A 2D image was displayed in the center of the stage as a texture.
• Since the original size of the texture is 64dots X 64dots, it is not possible to map it to one surface as it is. In reality, it is mapped after data is divided into 32dots X 32dots.

  Reference: DrawMovie() of map.c

    :
    :
    /* 64dots X 64dots texture is divided into 4 and read.   */
    /*  In other words, 4 32dots X 32dots-textures are read. */
    /* Read texture data (upper left portion)                */
    gDPLoadTextureTile(glistp++,
      bmp,
      G_IM_FMT_RGBA,
      G_IM_SIZ_16b,
      64, 64,
      0, 0, 31, 31,
      0,
      G_TX_WRAP | G_TX_NOMIRROR, G_TX_WRAP | G_TX_NOMIRROR,
      0, 0,
      G_TX_NOLOD, G_TX_NOLOD);
      gSP2Triangles(glistp++,0,1,2,0,0,2,3,0);	    
     :
     :
  

I want to try 3D display.

• The stage map is polygon-displayed.
• By moving the C button of the Controller up and down, the position of image point can be changed.

  Reference: DrawMapObj() of map.c

    Model data that was output by a modeling tool using gSPDisplayList() 
    is actually output.  
    :
    the portion of gSPDisplayList(glistp++,kabe_mdl_model0);	
      

I want to display a screen with sound.

• It can be done rather easily if NuSystem is used. Sequence and sound effect are emitted with screen display.

  Reference: mainproc() of gamemain.c

    sequence
    :
    nuAuSeqPlayerSetNo(0,0);
    nuAuSeqPlayerPlay(0);
    :
      

  Reference: updateGame() of gamemain.c

    sound effect
    :
    nuAuSndPlayerPlay(EFF_PAUSE);
    nuAuSndPlayerSetPitch(44100.0/32000);
    :
      

I want to use 4 Controllers and 4 Controller Paks.

• Created a game which uses 4 Controllers. Also, it uses 4 Controller Paks. It should be a reference as an error process sample, too.

  Reference: updateGame() of gamemain.c

    :
    :
    /* Updating process for each pad */
    the portion of for(padnum = 0; padnum < NU_CONT_MAXCONTROLLERS; padnum++){
    :
    :
  	   

I want to proceed with a program while bringing a program or data from the ROM area.

• Reading to a fixed area as an example of not only the data that is read first, but also the data which I brought from the ROM later. Image data in the center of the screen is read one by one.

  Reference: ReadMovie() of gamemain.c

    :
    /*  Actually copy data from ROM to RDRAM. */
    the portion of nuPiReadRom( (u32)(_moviedataSegmentRomStart + onecutlen * MovieNum),
      (void *)&MovieBuf[0],
      onecutlen
      );
    :
    :	
      

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