#include"starfield.h"

struct Star Stars[MAX_STARS];

void starfield_Init(void) {
    unsigned char theStar = 0;
    memset(Stars, 0, sizeof(Stars));

    for(theStar = 0; theStar < MAX_STARS; theStar++) {
        Stars[theStar].x = rand() % SSD1306_WIDTH;
        Stars[theStar].y = rand() % SSD1306_HEIGHT;
        Stars[theStar].type = rand() % 3;
    }
}

void starfield_Update(void) {
    unsigned char theStar = 0;

    for(theStar = 0; theStar < MAX_STARS; theStar++) {

        switch(Stars[theStar].type) {
            case 0:
                Stars[theStar].x += 2;
                break;
            case 1:
                Stars[theStar].x += 3;
                break;
            case 2:
                Stars[theStar].x += 4;
            break;
        }

        if (Stars[theStar].x >= SSD1306_WIDTH) {
            //HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_6);
            Stars[theStar].x = 0;
            Stars[theStar].y = rand() % SSD1306_HEIGHT;
            Stars[theStar].type = rand() % 3;
            continue;
        }

        // Draw star
        ssd1306_DrawPixel(Stars[theStar].x, Stars[theStar].y, White);
    }
}