#include "device/device.h"
#include "game.h"

uint32_t game_frame;

void game_init() {
    game_frame = 0;

    for (uint32_t x = 0; x < 8; x++) {
        for (uint32_t y = 0; y < 8; y++) {
            for (uint32_t z = 0; z < 4; z++) {
                device_palette[
                    (x << 5)|(y << 2)|(z)
                ] = 
                    ((x * 255)/7) << 24 | 
                    ((y * 255)/7) << 16 | 
                    ((z * 255)/3) << 8;
            }
        }
    }
}

void game_update() {
    game_frame += 4;
}

void game_draw() {
    for (int x = 0; x < DEVICE_W; x++) {
        for (int y = 0; y < DEVICE_H; y++) {
            uint32_t r = (x * 255)/(DEVICE_W - 1);
            uint32_t g = (y * 255)/(DEVICE_H - 1);
            uint32_t b = game_frame & 0x100 ? 0xff - game_frame & 0xff : game_frame & 0xff;
            if (x % 4 == 2 && y % 4 == 2) {
                r = 255 - r;
                g = 255 - g;
                b = 255 - b;
            }
            uint8_t color = (r >> 5) << 5 | (g >> 5) << 2 | (b >> 6);
            device_pixels[y][x] = color;
        }
    }

    for (int i = 0; i < DEVICE_BUTTON_N; i++) {
        device_pixels[0][i] = device_buttons[i] ? 0x00 : 0xff;
    }
}