File content as of revision 18:24ce897024d0:

#include "Game.h"
#include "Input.h"
#include "Engine.h"
#include "Menus.h"

Game::Game(Difficulty difficulty) {
    currentTetromino = Tetromino::getTetrominoOfType(
        Tetromino::getRandomTetrominoType());
    nextTetrominoType = Tetromino::getRandomTetrominoType();
    
    switch (difficulty) {
        case EASY:
            move_frames = Engine::FPS / 6; // ~ 160ms
            break;
        case MEDIUM:
            move_frames = Engine::FPS / 9; // ~ 110ms
            break;
        case HARD:
            move_frames = Engine::FPS / 12; // ~ 80ms
            break;
    }
    
    frames = 0;
    last_move_frame = 0;
    start_x = Grid::GRID_WIDTH / 2 - 1;
    currentTetromino = currentTetromino.teleportedTo(start_x);
}

Game::~Game() {
    
}

void Game::update() {
    if (frames++ > last_move_frame + move_frames) {
        last_move_frame = frames;
        moveCurrentTetrominoDown();
    }
    
    if (Input::buttonHit(Input::LEFT)) {
        if (grid.isSpaceForTetromino(currentTetromino.movedLeft())) {
            currentTetromino = currentTetromino.movedLeft();
        }
    }
    if (Input::buttonHit(Input::RIGHT)) {
        if (grid.isSpaceForTetromino(currentTetromino.movedRight())) {
            currentTetromino = currentTetromino.movedRight();
        } else {
            printf("NO SPACE TO THE RIGHT");
        }
    }
    if (Input::buttonHit(Input::UP)) {
        if (grid.isSpaceForTetromino(currentTetromino.rotatedClockwise())) {
            currentTetromino = currentTetromino.rotatedClockwise();
        }
    }
    if (Input::buttonHit(Input::DOWN)) {
        dropCurrentTetromino();
    }
}

void Game::moveCurrentTetrominoDown() {
    if (grid.isSpaceForTetromino(currentTetromino.movedDown())) {
        currentTetromino = currentTetromino.movedDown();
    } else {
        grid.placeTetromino(currentTetromino);
        currentTetromino = Tetromino::getTetrominoOfType(nextTetrominoType);
        // centre it
        currentTetromino = currentTetromino.teleportedTo(start_x);
        if (!grid.isSpaceForTetromino(currentTetromino)) {
            // no space for tetromino, game over
            gameOver();
        }
        nextTetrominoType = Tetromino::getRandomTetrominoType();
    }
}

void Game::dropCurrentTetromino() {
    while (grid.isSpaceForTetromino(currentTetromino.movedDown())) {
        currentTetromino = currentTetromino.movedDown();
    }
    moveCurrentTetrominoDown();
}

void Game::draw() {
    currentTetromino.draw();
    grid.draw();
}

void Game::gameOver() {
    Menus::add(Menus::GAME_OVER);
}