Graphics/Printing/rotscale_text/source/main.c

#include <nds.h>

#include <stdio.h>

//Include the font header generated by grit
#include "font.h"

//---------------------------------------------------------------------------------
int main(void) {
//---------------------------------------------------------------------------------

    const int tile_base = 0;
    const int map_base = 20;


    videoSetMode(0);    

    videoSetModeSub(MODE_5_2D); 
    vramSetBankC(VRAM_C_SUB_BG); 

    PrintConsole *console = consoleInit(0, 3, BgType_ExRotation, BgSize_ER_256x256, map_base, tile_base, false, false);

    ConsoleFont font;

    font.gfx = (u16*)fontTiles;
    font.pal = (u16*)fontPal;
    font.numChars = 95;
    font.numColors =  fontPalLen / 2;
    font.bpp = 8;
    font.asciiOffset = 32;
    font.convertSingleColor = false;
    
    consoleSetFont(console, &font);

    int bg3 = console->bgId;

    iprintf("Custom Font Demo\n");
    iprintf("   by Poffy\n");
    iprintf("modified by WinterMute and dovoto\n");
    iprintf("for libnds examples\n");

    
    unsigned int angle = 0;
    int scrollX = 0;
    int scrollY = 0;
    int scaleX = intToFixed(1,8);
    int scaleY = intToFixed(1,8);

    while(1) {
        scanKeys();
        u32 keys = keysHeld();

        if ( keys & KEY_L ) angle+=64; 
        if ( keys & KEY_R ) angle-=64;

        if ( keys & KEY_LEFT ) scrollX++;
        if ( keys & KEY_RIGHT ) scrollX--;
        if ( keys & KEY_UP ) scrollY++;
        if ( keys & KEY_DOWN ) scrollY--;

        if ( keys & KEY_A ) scaleX++;
        if ( keys & KEY_B ) scaleX--;

        if( keys & KEY_X ) scaleY++;
        if( keys & KEY_Y ) scaleY--;

        swiWaitForVBlank();


        bgSetRotateScale(bg3, angle, scaleX, scaleY);
        bgSetScroll(bg3, scrollX, scrollY);
        bgUpdate();
    }

}