#include <string.h>

#include "common.h"
#include "gba-buttons.c"
#include "background-tiles.c"
#include "sprites.h"
#include "text.h"

//
// Main functions.
//

// TODO: Cleanup OBJ/OAM memory copying and access.
//

int main(void) {
    // Configure the display in mode 0 to show OBJs, where tile memory is
    // sequential.
    DISP_CTRL = DISP_ENABLE_SPRITES | DISP_MODE_0 | DISP_BG_0;

    // Initialize sprite button overlay.
    init_sprite_pal(0, COLOR_WHITE);
    init_sprites(0);
    init_button_sprites();

    // Initialize text engine.
    txt_init(0, COLOR_RED, 0);
    txt_position(0, 6);
    txt_printf("Strings: %s\n", "Hello World");
    txt_printf("Signed ints: %d\n", -100000);
    txt_printf("Unsigned ints: %u\n", 1234567);
    txt_printf("Hex values: 0x%x\n", 1024);

    int frame_counter = 0;
    int x = 0;
    int y = 0;
    while(true) {
        wait_vsync();
        poll_keys();

        txt_position(0, 0);
        txt_printf("Frame counter: %d\n", frame_counter);

        if (key_hold(KEY_DOWN)) {
            y += 3;
        }
        if (key_hold(KEY_UP)) {
            y -= 3;
        }
        if (key_hold(KEY_LEFT)) {
            x -= 3;
        }
        if (key_hold(KEY_RIGHT)) {
            x += 3;
        }

        if (key_pressed(KEY_A)) {
            txt_clear_line();
            txt_printf("Pressed key: A");
        }
        if (key_pressed(KEY_B)) {
            txt_clear_line();
            txt_printf("Pressed key: B");
        }
        if (key_pressed(KEY_L)) {
            txt_clear_line();
            txt_printf("Pressed key: L");
        }
        if (key_pressed(KEY_R)) {
            txt_clear_line();
            txt_printf("Pressed key: R");
        }
        if (key_pressed(KEY_START)) {
            txt_clear_line();
            txt_printf("Pressed key: Start");
        }
        if (key_pressed(KEY_SELECT)) {
            txt_clear_line();
            txt_printf("Pressed key: Select");
        }
        if (key_pressed(KEY_UP)) {
            txt_clear_line();
            txt_printf("Pressed key: Up");
        }
        if (key_pressed(KEY_DOWN)) {
            txt_clear_line();
            txt_printf("Pressed key: Down");
        }
        if (key_pressed(KEY_LEFT)) {
            txt_clear_line();
            txt_printf("Pressed key: Left");
        }
        if (key_pressed(KEY_RIGHT)) {
            txt_clear_line();
            txt_printf("Pressed key: Right");
        }

        frame_counter++;
        // BG_H_SCROLL_0 = x;
        // BG_V_SCROLL_0 = y;

        update_button_sprites();
    };

    return 0;
}