Home > Uncategorized > Hello World for the Wii

Hello World for the Wii

#include <stdio.h>
#include <stdlib.h>
#include <gccore.h>
#include <wiiuse/wpad.h>

static void *xfb = NULL;
static GXRModeObj *rmode = NULL;

//———————————————————————————
int main(int argc, char **argv) {
//———————————————————————————

    // Initialise the video system
    VIDEO_Init();
   
    // This function initialises the attached controllers
    WPAD_Init();
   
    // Obtain the preferred video mode from the system
    // This will correspond to the settings in the Wii menu
    rmode = VIDEO_GetPreferredMode(NULL);

    // Allocate memory for the display in the uncached region
    xfb = MEM_K0_TO_K1(SYS_AllocateFramebuffer(rmode));
   
    // Initialise the console, required for printf
    console_init(xfb,20,20,rmode->fbWidth,rmode->xfbHeight,rmode->fbWidth*VI_DISPLAY_PIX_SZ);
   
    // Set up the video registers with the chosen mode
    VIDEO_Configure(rmode);
   
    // Tell the video hardware where our display memory is
    VIDEO_SetNextFramebuffer(xfb);
   
    // Make the display visible
    VIDEO_SetBlack(FALSE);

    // Flush the video register changes to the hardware
    VIDEO_Flush();

    // Wait for Video setup to complete
    VIDEO_WaitVSync();
    if(rmode->viTVMode&VI_NON_INTERLACE) VIDEO_WaitVSync();

    // The console understands VT terminal escape codes
    // This positions the cursor on row 2, column 0
    // we can use variables for this with format codes too
    // e.g. printf ("x1b[%d;%dH", row, column );
    printf("x1b[2;0H");
   

    printf("Hello World!");

    while(1) {

        // Call WPAD_ScanPads each loop, this reads the latest controller states
        WPAD_ScanPads();

        // WPAD_ButtonsDown tells us which buttons were pressed in this loop
        // this is a "one shot" state which will not fire again until the button has been released
        u32 pressed = WPAD_ButtonsDown(0);

        // We return to the launcher application via exit
        if ( pressed & WPAD_BUTTON_HOME ) exit(0);

        // Wait for the next frame
        VIDEO_WaitVSync();
    }

    return 0;
}

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