Untitled

#include "Tetromino.h"
#include <cstdlib>
#include <ctime>

int figures[7][4] = {
    1,3,5,7, // I
    2,4,5,7, // Z
    3,5,4,6, // S
    3,5,4,7, // T
    2,3,5,7, // L
    3,5,7,6, // J
    2,3,4,5  // O
};

Tetromino::Tetromino() {
    generateNewTetromino();
}

void Tetromino::generateNewTetromino() {
    int n = rand() % 7;
    colorNum = 1 + rand() % 7;
    int offset = rand() % 6;
    for (int i = 0; i < 4; i++) {
        a[i].x = figures[n][i] % 2 + offset;
        a[i].y = figures[n][i] / 2;
    }
}

bool Tetromino::checkCollision(int field[23][10]) {
    for (int i = 0; i < 4; i++) {
        if (a[i].x < 0 || a[i].x >= 10 || a[i].y >= 23) return false;
        else if (field[a[i].y][a[i].x]) return false;
    }
    return true;
}

void Tetromino::move(int dx, int field[23][10]) {
    for (int i = 0; i < 4; i++) { b[i] = a[i]; a[i].x += dx; }
    if (!checkCollision(field)) for (int i = 0; i < 4; i++) a[i] = b[i];
}

void Tetromino::rotate(int field[23][10]) {
    Point p = a[1]; // center of rotation
    for (int i = 0; i < 4; i++) {
        int x = a[i].y - p.y;
        int y = a[i].x - p.x;
        a[i].x = p.x - x;
        a[i].y = p.y + y;
    }
    if (!checkCollision(field)) for (int i = 0; i < 4; i++) a[i] = b[i];
}

const std::array<Point, 4>& Tetromino::getBlockPositions() const {
    return a;
}

int Tetromino::getColorNum() const {
    return colorNum;
}