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();
        }

}