掌機 - Game Boy Advance - C/C++ - Fill Color

參考資訊：
https://github.com/morgenman/nds-docker

Mode：


main.c

#include <stdio.h>
#include <gba_console.h>
#include <gba_input.h>
#include <gba_video.h>

void fill_color(u16 col)
{
    u16 *p = (u16 *)MODE3_FB;

    for (int c = 0; c < (240 * 160); c++) {
        *p++ = col;
    }
}

int main(void)
{
    u16 cur_key = 0;
    u16 pre_key = 0;

    SetMode(MODE_3 | BG2_ON);

    while (1) {
        scanKeys();
        cur_key = keysDown();
        if ((cur_key != 0) && (cur_key != pre_key)) {
            pre_key = cur_key;

            if (cur_key & KEY_UP) {
                fill_color(0x1f);
            }
            else if (cur_key & KEY_DOWN) {
                fill_color(0x3e0);
            }
            else if (cur_key & KEY_LEFT) {
                fill_color(0x7c00);
            }
            else if (cur_key & KEY_UP) {
                fill_color(0x7fff);
            }
            else {
                fill_color(0x0000);
            }
        }
    }

    return 0;
}

完成