#include <windows.h>
#include <winuser.h>

#define set_char(X,Y,C,A) {invisibleBuf[Y][X].Char.AsciiChar=C; invisibleBuf[Y][X].Attributes=A; }

#define is_down(K) GetAsyncKeyState(K)&(1<<16)

HANDLE stdHandle;
CHAR_INFO invisibleBuf[70][90];

void toScreen() {
    SMALL_RECT r{0, 0, 90, 70};
    WriteConsoleOutput(stdHandle, (const CHAR_INFO*)&invisibleBuf, COORD{90, 70}, COORD{0, 0}, &r);
}

int attr = 0;

void drawImg(int x, int y, long long img) {
    while(img) {
        for(int i = 0; i < 8; i++) {
            set_char(x, y, ((img) & 1) ? 219 : ' ', attr);
            x++;
            img>>=1;
        }

        x -= 8;
        y--;
    }
}

void clearScreen() {
    for(int i = 0; i < 90 * 70; i++)
        set_char(i, 0, 0, 0);
}

int pX = 0;

int bX, bY = -1;

void handleInput() {
    if(is_down('A'))
        pX--;
    if(is_down('D'))
        pX++;

    pX = pX < 0 ? 0 : (pX > 80 ? 80 : pX);

    if(is_down(32) && bY == -1) {
        Beep(500, 30);
        bX = pX + 2;
        bY = 65 - 3;
    }


    if(bY == -1)
        bX=-1;
    else
        bY--;
}

void drawPlayer() {
    attr = 10;

    drawImg(pX, 65, 0x40E1F);

    if(bY>=0)
        set_char(bX, bY, 'o', 10);
}

int ePos = 0, mv = 0;
//int enemies[] =

void drawEnemies() {
    if(mv++ % 8 & 1)
        ePos++;

    int xOffset = (ePos / 13) % 2 ? (13 - (ePos % 13)) : ePos % 13;
    int yOffset = ePos / 13;

    for(int i = 0; i < 15; i++) {
        attr = i&1 ? 15 : 14;
        drawImg(xOffset + i%5 * 16, yOffset + 8 + i/5 * 10, 0x183C7EDBFF245AA5);
    }

    if(yOffset > 35) {
        Beep(200, 300);
    }
}

void loop() {
    l:

    clearScreen();

    handleInput();
    drawPlayer();

    drawEnemies();

    //drawImg(6, 24, 0x66C366FF7EFF66C3);


    toScreen();
    Sleep(50);

    goto l;
}

int main() {
    stdHandle = GetStdHandle(-11);

    loop();

    return 0;
}