/*---------------------------------------------------------------------------*
  Project:  NitroSDK - CARD - demos - card-2
  File:     main.c

  Copyright 2003-2006 Nintendo.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Log: main.c,v $
  Revision 1.6  01/18/2006 02:11:21  kitase_hirotake
  do-indent

  Revision 1.5  11/21/2005 10:19:36  kitase_hirotake
  Deleted OS_InitPrintServer, OS_PrintServer and PXI_Init
  Changed SVC_WaitVBlankIntr to OS_WaitVBlankIntr

  Revision 1.4  06/27/2005 11:10:11  yosizaki
  add comment about DC_WaitWriteBufferEmpty().

  Revision 1.3  04/26/2005 02:35:01  terui
  Fix comment

  Revision 1.2  02/28/2005 05:26:09  yosizaki
  do-indent.

  Revision 1.1  12/22/2004 02:42:43  terui
  Initial upload

  $NoKeywords: $
 *---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------*
    This demo uses the PictoCatch feature to detect the beacon from the PictoChat parent
 *---------------------------------------------------------------------------*/

#include    <nitro.h>
#include    <nitro/wm.h>
#include    <nitro/cht.h>

#include    "font.h"
#include    "icon.h"
#include    "wc.h"


/*---------------------------------------------------------------------------*
    constant definitions
 *---------------------------------------------------------------------------*/
#define     KEY_REPEAT_START    25     // number of frames until key repeat starts
#define     KEY_REPEAT_SPAN     10     // number of key repeat interval frames

#define     DEFAULT_GGID            0x003fff62
#define     NUM_MAX_CHILD           15
#define     DEFAULT_CHAN            1
#define     PARENT_DATA_SIZE        4
#define     CHILD_DATA_SIZE         4


static const WMParentParam defaultParameter = {
    NULL, 0, 0,
    DEFAULT_GGID,                      // Game group ID
    0x0000,                            // Temporary ID (incremented by 1 each time)
    1,                                 // Entry permit flag
    NUM_MAX_CHILD,                     // Maximum number of connected children
    0,                                 // Multiboot flag
    0,                                 // Key sharing
    0,                                 // Continuous send flag
    200,                               // Beacon interval
    {0, 0, 0, 0},                      // User name
    {0, 0, 0, 0, 0, 0, 0, 0},          // Game name
    DEFAULT_CHAN,                      // Connection channel
    PARENT_DATA_SIZE,                  // Size of parent send data
    CHILD_DATA_SIZE                    // Size of child send data
};

#define     PICTO_CATCH_LIFETIME    300 // 5 seconds


/*---------------------------------------------------------------------------*
    structure definitions
 *---------------------------------------------------------------------------*/
// key input data
typedef struct KeyInfo
{
    u16     cnt;                       // unprocessed input values
    u16     trg;                       // push trigger input
    u16     up;                        // release trigger input
    u16     rep;                       // push and hold repeat input

}
KeyInfo;

typedef struct PictoCatchInfo
{
    int     lifeTime;
    int     clientNum;

}
PictoCatchInfo;


/*---------------------------------------------------------------------------*
    Internal function definitions
 *---------------------------------------------------------------------------*/
// Parent discovery callback
static void FoundParentCallback(WMBssDesc *pBssDesc);

// V blank interrupt handler
static void VBlankIntr(void);

// General purpose subroutines
static void KeyRead(KeyInfo * pKey);
static void ClearString(void);
static void PrintString(s16 x, s16 y, u8 palette, char *text, ...);
static void ColorString(s16 x, s16 y, s16 length, u8 palette);
static void InitializeAllocateSystem(void);
static void DrawIcon(u8 index, int charName, int x, int y);


/*---------------------------------------------------------------------------*
    internal variable definitions
 *---------------------------------------------------------------------------*/
static u16 gScreen[32 * 32] ATTRIBUTE_ALIGN(32);
static GXOamAttr gOam[128] ATTRIBUTE_ALIGN(32);
static KeyInfo gKey;                   // key input
static s32 gFrame;                     // Frame counter

static PictoCatchInfo gRoom[4];


/*---------------------------------------------------------------------------*
  Name:         NitroMain

  Description:  Initialization and main loop.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
void NitroMain(void)
{
    // the different types of initialization
    OS_Init();
    FX_Init();
    GX_Init();
    GX_DispOff();
    GXS_DispOff();

    // initializes display settings
    GX_SetBankForLCDC(GX_VRAM_LCDC_ALL);
    MI_CpuClearFast((void *)HW_LCDC_VRAM, HW_LCDC_VRAM_SIZE);
    (void)GX_DisableBankForLCDC();
    MI_CpuFillFast((void *)HW_OAM, 192, HW_OAM_SIZE);
    MI_CpuClearFast((void *)HW_PLTT, HW_PLTT_SIZE);
    MI_CpuFillFast((void *)HW_DB_OAM, 192, HW_DB_OAM_SIZE);
    MI_CpuClearFast((void *)HW_DB_PLTT, HW_DB_PLTT_SIZE);

    // 2D display settings for text string display
    GX_SetBankForBG(GX_VRAM_BG_128_A);
    G2_SetBG0Control(GX_BG_SCRSIZE_TEXT_256x256, GX_BG_COLORMODE_16, GX_BG_SCRBASE_0xf800,      // SCR base block 31
                     GX_BG_CHARBASE_0x00000,    // CHR base block 0
                     GX_BG_EXTPLTT_01);
    GX_SetBankForOBJ(GX_VRAM_OBJ_16_F);
    GX_SetOBJVRamModeChar(GX_OBJVRAMMODE_CHAR_1D_32K);
    G2_SetBG0Priority(0);
    G2_BG0Mosaic(FALSE);
    GX_SetGraphicsMode(GX_DISPMODE_GRAPHICS, GX_BGMODE_0, GX_BG0_AS_2D);
    GX_SetVisiblePlane(GX_PLANEMASK_BG0 | GX_PLANEMASK_OBJ);
    GX_LoadBG0Char(d_CharData, 0, sizeof(d_CharData));
    GX_LoadBGPltt(d_PaletteData, 0, sizeof(d_PaletteData));
    GX_LoadOBJ(icons_character, 0, sizeof(icons_character));
    GX_LoadOBJPltt(icons_palette, 0, sizeof(icons_palette));
    MI_CpuFillFast((void *)gScreen, 0, sizeof(gScreen));
    DC_FlushRange(gScreen, sizeof(gScreen));
    /* IO register is accessed using DMA operation, so cache Wait is not needed*/
    // DC_WaitWriteBufferEmpty();
    GX_LoadBG0Scr(gScreen, 0, sizeof(gScreen));

    // Set interrupt
    OS_SetIrqFunction(OS_IE_V_BLANK, VBlankIntr);
    (void)OS_EnableIrqMask(OS_IE_V_BLANK);
    (void)GX_VBlankIntr(TRUE);
    (void)OS_EnableIrq();
    (void)OS_EnableInterrupts();

    // Memory allocation
    InitializeAllocateSystem();

    //********************************
    // Initialize Wireless
    WcInit(&defaultParameter, FALSE, FALSE, 1);
    // Enable PictoChat search feature
    WcTurnOnPictoCatch(FoundParentCallback);
    // Start search for parent
    WcStartChild();
    //********************************

    // LCD display start
    GX_DispOn();
    GXS_DispOn();

    // debug string output
    OS_Printf("ARM9: CHT catch-1 demo started.\n");

    // empty call for getting key input data (strategy for pressing A button in IPL)
    KeyRead(&gKey);

    // Main loop
    for (gFrame = 0; TRUE; gFrame++)
    {
        // get key input data
        KeyRead(&gKey);

        // Clears the screen
        ClearString();

        // Display
        PrintString(1, 1, 0xf, "frame: %d", gFrame);
        {
            s32     i;

            for (i = 0; i < 4; i++)
            {
                if (gRoom[i].lifeTime > 0)
                {
                    gRoom[i].lifeTime--;
                    PrintString(1, (s16)(6 + (3 * i)), 0xf, "Discover pictochat room%d", i);
                    PrintString(2, (s16)(7 + (3 * i)), 0x2, "%d members", gRoom[i].clientNum);
                    // Display icon
                    DrawIcon((u8)i, 9, 208, (s16)(48 + (24 * i)));
                }
                else
                {
                    PrintString(10, (s16)(6 + (3 * i)), 0xe, "pictochat room%d", i);
                }
            }
        }

        // Waiting for the V-blank
        OS_WaitVBlankIntr();
    }
}

/*---------------------------------------------------------------------------*
  Name:         FoundParentCallback

  Description:  Callback function called when parent is found.

  Arguments:    pBssDesc    -  Pointer to beacon information of found parent.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void FoundParentCallback(WMBssDesc *pBssDesc)
{
    if (CHT_IsPictochatParent(pBssDesc))
    {
        int     clientNum;
        int     roomNumber;

        clientNum = CHT_GetPictochatClientNum(pBssDesc);
        roomNumber = CHT_GetPictochatRoomNumber(pBssDesc);
        if (roomNumber < 4)
        {
            if (gRoom[roomNumber].lifeTime == 0)
            {
                /* SE should start here*/
            }
            gRoom[roomNumber].clientNum = clientNum;
            gRoom[roomNumber].lifeTime = PICTO_CATCH_LIFETIME;
        }
    }
}

/*---------------------------------------------------------------------------*
  Name:         VBlankIntr

  Description:  V blank interrupt vector.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void VBlankIntr(void)
{
    // Reflect virtual screen in VRAM
    DC_FlushRange(gScreen, sizeof(gScreen));
    /* IO register is accessed using DMA operation, so cache Wait is not needed*/
    // DC_WaitWriteBufferEmpty();
    GX_LoadBG0Scr(gScreen, 0, sizeof(gScreen));

    // Reflect virtual OAM in OAM
    DC_FlushRange(gOam, sizeof(gOam));
    /* IO register is accessed using DMA operation, so cache Wait is not needed*/
    // DC_WaitWriteBufferEmpty();
    GX_LoadOAM(gOam, 0, sizeof(gOam));

    // sets the IRQ check flag
    OS_SetIrqCheckFlag(OS_IE_V_BLANK);
}

/*---------------------------------------------------------------------------*
  Name:         KeyRead

  Description:  Edits key input data.
                Detects press trigger, release trigger and hold repeat trigger.

  Arguments:    pKey  - Structure that holds key input data to be edited.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void KeyRead(KeyInfo * pKey)
{
    static u16 repeat_count[12];
    int     i;
    u16     r;

    r = PAD_Read();
    pKey->trg = 0x0000;
    pKey->up = 0x0000;
    pKey->rep = 0x0000;

    for (i = 0; i < 12; i++)
    {
        if (r & (0x0001 << i))
        {
            if (!(pKey->cnt & (0x0001 << i)))
            {
                pKey->trg |= (0x0001 << i);     // push trigger
                repeat_count[i] = 1;
            }
            else
            {
                if (repeat_count[i] > KEY_REPEAT_START)
                {
                    pKey->rep |= (0x0001 << i); // push and hold repeat
                    repeat_count[i] = KEY_REPEAT_START - KEY_REPEAT_SPAN;
                }
                else
                {
                    repeat_count[i]++;
                }
            }
        }
        else
        {
            if (pKey->cnt & (0x0001 << i))
            {
                pKey->up |= (0x0001 << i);      // release trigger
            }
        }
    }
    pKey->cnt = r;                     // unprocessed key input
}

/*---------------------------------------------------------------------------*
  Name:         ClearString

  Description:  Clear the virtual screen.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void ClearString(void)
{
    s32     i;

    MI_CpuClearFast((void *)gScreen, sizeof(gScreen));
    for (i = 0; i < 128; i++)
    {
        G2_SetOBJPosition(&gOam[i], 256, 192);
    }
}

/*---------------------------------------------------------------------------*
  Name:         PrintString

  Description:  Positions the character string on the virtual screen. The string can be up to 32 chars.

  Arguments:    x       -  x coordinate where character string starts (x 8 dots).
                y       -  y coordinate where character string starts (x 8 dots).
                palette - specify Text color by palette number.
                text    - Character string to position. NULL terminated.
                ...     -   Virtual argument.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void PrintString(s16 x, s16 y, u8 palette, char *text, ...)
{
    va_list vlist;
    char    temp[32 + 2];
    s32     i;

    va_start(vlist, text);
    (void)vsnprintf(temp, 33, text, vlist);
    va_end(vlist);

    *(u16 *)(&temp[32]) = 0x0000;
    for (i = 0;; i++)
    {
        if (temp[i] == 0x00)
        {
            break;
        }
        gScreen[((y * 32) + x + i) % (32 * 32)] = (u16)((palette << 12) | temp[i]);
    }
}

/*---------------------------------------------------------------------------*
  Name:         ColorString

  Description:  Changes the color of character strings printed on the virtual screen.

  Arguments:    x       - x coordinate (X 8 dots ) from which to start color change.
                y       - y coordinate ( X 8 dots ) from which to start color change.
                length  - Number of characters to extend the color change.
                palette - specify Text color by palette number.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void ColorString(s16 x, s16 y, s16 length, u8 palette)
{
    s32     i;
    u16     temp;
    s32     index;

    if (length < 0)
        return;

    for (i = 0; i < length; i++)
    {
        index = ((y * 32) + x + i) % (32 * 32);
        temp = gScreen[index];
        temp &= 0x0fff;
        temp |= (palette << 12);
        gScreen[index] = temp;
    }
}

/*---------------------------------------------------------------------------*
  Name:         DrawIcon

  Description:  Display icon.

  Arguments:    index       - Specifies virtual OAM array index.
                charName    - Specifies icon number.
                                0 &#x81;` 3 : Icons of signal strength against white background.
                                4 &#x81;` 7 : Icons of signal strength against black background.
                                8      : Communications icon
                                9      : PictoChat icon
                x           - Specifies X-coordinate position in units of dots
                y           - Specifies Y-coordinate position in units of dots

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void DrawIcon(u8 index, int charName, int x, int y)
{
    G2_SetOBJAttr(&gOam[index],        // Pointer to OAM structure to edit
                  x,                   // X position
                  y,                   // Y position
                  0,                   // Highest display priority
                  GX_OAM_MODE_NORMAL,  // Normal OBJ
                  FALSE,               // No mosaic
                  GX_OAM_EFFECT_NONE,  // No effects
                  GX_OAM_SHAPE_16x16,  // 2 x 2 character
                  GX_OAM_COLORMODE_16, // 16-color palette
                  charName * 4,        // Character number
                  0,                   // Palette number 0
                  0                    // Affine transformation index (invalid)
        );
}

/*---------------------------------------------------------------------------*
  Name:         InitializeAllocateSystem

  Description:  Initializes the memory allocation system within the main memory arena.

  Arguments:    None.

  Returns:      None.
 *---------------------------------------------------------------------------*/
static void InitializeAllocateSystem(void)
{
    void   *tempLo;
    OSHeapHandle hh;

    // Based on the premise that OS_Init is already called
    tempLo = OS_InitAlloc(OS_ARENA_MAIN, OS_GetMainArenaLo(), OS_GetMainArenaHi(), 1);
    OS_SetArenaLo(OS_ARENA_MAIN, tempLo);
    hh = OS_CreateHeap(OS_ARENA_MAIN, OS_GetMainArenaLo(), OS_GetMainArenaHi());
    if (hh < 0)
    {
        OS_Panic("ARM9: Fail to create heap...\n");
    }
    hh = OS_SetCurrentHeap(OS_ARENA_MAIN, hh);
}

/*---------------------------------------------------------------------------*
  End of file
 *---------------------------------------------------------------------------*/
