mirror of
https://github.com/RGBCube/serenity
synced 2025-07-10 10:17:35 +00:00
c9fb3e07d2
We previously never called event.ignore(), so the keydown event for F2 or F11 etc would be consumed by the BrickGame widget instead of bubbling up. Now you can start a new game, or escape fullscreen mode, even if you've paused the game. :^)
703 lines
22 KiB
C++
703 lines
22 KiB
C++
/*
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "BrickGame.h"
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#include <AK/Random.h>
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#include <LibConfig/Client.h>
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#include <LibGUI/MessageBox.h>
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#include <LibGUI/Painter.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/Font/FontDatabase.h>
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#include <LibGfx/Point.h>
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using Position = Gfx::Point<int>;
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class Well final {
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public:
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using Row = u32;
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Well()
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{
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reset();
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}
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[[nodiscard]] static constexpr size_t number_of_columns() { return 10; }
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[[nodiscard]] static constexpr size_t number_of_rows() { return top_margin() + 18 + bottom_margin(); }
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[[nodiscard]] static constexpr size_t left_margin() { return margin_left; }
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[[nodiscard]] static constexpr size_t top_margin() { return margin_top; }
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[[nodiscard]] static constexpr size_t bottom_margin() { return margin_bottom; }
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[[nodiscard]] Row operator[](size_t i) const { return m_rows[i]; }
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Row& operator[](size_t i) { return m_rows[i]; }
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[[nodiscard]] bool operator[](Position pos) const
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{
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return (m_rows[pos.y()] & (1 << (31 - pos.x()))) != 0;
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}
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void reset()
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{
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auto const rows = number_of_rows();
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for (size_t row_index = 0; row_index < rows; ++row_index)
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m_rows[row_index] = s_empty_row;
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for (size_t row_index = rows - margin_bottom; row_index < rows; ++row_index)
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m_rows[row_index] = s_full_row;
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}
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size_t check_and_remove_full_rows()
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{
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size_t number_of_removed_rows {};
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auto current = int(number_of_rows() - bottom_margin());
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for (auto row { current - 1 }; row >= 0; --row) {
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if (m_rows[row] == s_full_row) {
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number_of_removed_rows += 1;
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continue;
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}
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m_rows[--current] = m_rows[row];
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}
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for (; current >= 0; --current)
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m_rows[current] = s_empty_row;
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return number_of_removed_rows;
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}
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private:
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static constexpr size_t column_count = 10;
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static constexpr size_t row_count = 18;
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static constexpr size_t margin_left = 4;
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static constexpr size_t margin_top = 1;
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static constexpr size_t margin_right = 32 - margin_left - column_count;
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static constexpr size_t margin_bottom = 4;
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static constexpr size_t total_row_count = row_count + margin_top + margin_bottom;
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// empty row looks like 0b1111'0000'0000'0011'1111'1111'1111'1111
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// note, we have margin on both sides to implement collision checking for
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// block shapes.
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static constexpr Row s_empty_row = ~((~(~0u << column_count)) << margin_right);
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// full row looks like 0b1111'1111'1111'1111'1111'1111'1111'1111
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static constexpr Row s_full_row = ~0;
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// A well is an array of rows, each row has 32 columns, each column is represented as a bit in the u32.
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// First column has index 0, it is the most significant bit in the u32.
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// An empty cell in the row is represented as a zero bit.
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// For convenience of testing of block-wall collisions the well starts at the non-zero margin
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// from top, left, right and bottom, i.e. it is surrounded with walls of specified width/height (margin).
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// Note, that block-well collision testing is a simple and fast 'and' bit operation of well row bit contents and
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// the shape row bits contents.
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Array<Row, total_row_count> m_rows {}; // 0 is the topmost row in the well
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};
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class Block final {
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public:
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static constexpr size_t shape_size = 4;
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Block() = default;
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Block(Block const&) = default;
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Block& operator=(Block const&) = default;
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Block& rotate_left()
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{
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m_rotation = m_rotation == 0 ? number_of_rotations - 1 : m_rotation - 1;
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return *this;
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}
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Block& rotate_right()
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{
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m_rotation = m_rotation == number_of_rotations - 1 ? 0 : m_rotation + 1;
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return *this;
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}
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Block& move_left()
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{
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m_position = m_position.moved_left(1);
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return *this;
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}
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Block& move_right()
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{
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m_position = m_position.moved_right(1);
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return *this;
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}
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Block& move_down()
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{
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m_position = m_position.moved_down(1);
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return *this;
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}
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Block& move_to(Position pos)
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{
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m_position = pos;
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return *this;
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}
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Block& random_shape()
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{
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m_shape = get_random_uniform(number_of_shapes);
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m_rotation = 0;
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m_position = { 6, 0 };
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return *this;
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}
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[[nodiscard]] bool operator[](Position pos) const
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{
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return (block_row(pos.y() - m_position.y()) & (1 << (31 - pos.x()))) != 0;
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}
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[[nodiscard]] bool has_collision(Well const& well) const
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{
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for (size_t start_row = 0; start_row < shape_size; ++start_row) {
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auto const row_index = start_row + m_position.y();
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if (row_index >= Well::number_of_rows() || (well[row_index] & block_row(start_row)) != 0)
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return true;
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}
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return false;
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}
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void place_into(Well& well)
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{
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for (size_t row_index = 0; row_index < shape_size; ++row_index)
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well[m_position.y() + row_index] |= block_row(row_index);
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}
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[[nodiscard]] bool dot_at(Position position) const
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{
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return ((shape_data_at(position.y()) & (1 << (3 - position.x()))) != 0);
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}
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private:
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static constexpr u8 number_of_shapes = 7;
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static constexpr u8 number_of_rotations = 4;
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using Shape = u16;
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using Row = u32;
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// Each shape is stored in one u16, each nibble is representing one shape row, highest nibble being the first row.
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// Every shape has 4x4 dimension and there are 4 possible shape rotations.
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static constexpr Shape s_shapes[number_of_shapes][number_of_rotations] = {
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// Shape: I
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{ 0b0000'1111'0000'0000, 0b0010'0010'0010'0010, 0b0000'1111'0000'0000,
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0b0010'0010'0010'0010 },
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// Shape: J
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{ 0b0000'0111'0001'0000, 0b0001'0001'0011'0000, 0b0000'0100'0111'0000,
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0b0011'0010'0010'0000 },
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// Shape: L
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{ 0b0000'0111'0100'0000, 0b0110'0010'0010'0000, 0b0000'0001'0111'0000,
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0b0010'0010'0011'0000 },
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// Shape: O
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{ 0b0000'0110'0110'0000, 0b0000'0110'0110'0000, 0b0000'0110'0110'0000,
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0b0000'0110'0110'0000 },
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// Shape: S
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{ 0b0000'0011'0110'0000, 0b0100'0110'0010'0000, 0b0000'0011'0110'0000,
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0b0100'0110'0010'0000 },
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// Shape: T
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{ 0b0000'0111'0010'0000, 0b0001'0011'0001'0000, 0b0000'0010'0111'0000,
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0b0100'0110'0100'0000 },
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// Shape: Z
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{ 0b0000'0110'0011'0000, 0b0001'0011'0010'0000, 0b0000'0110'0011'0000,
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0b0001'0011'0010'0000 }
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};
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Position m_position {};
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u8 m_rotation {};
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u8 m_shape {};
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[[nodiscard]] Row block_row(size_t row) const
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{
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return shape_data_at(row) << (32 - m_position.x() - shape_size);
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}
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[[nodiscard]] Row shape_data_at(size_t row) const
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{
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switch (row) {
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case 0:
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return Row((s_shapes[m_shape][m_rotation] >> 12) & 0xf);
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case 1:
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return Row((s_shapes[m_shape][m_rotation] >> 8) & 0xf);
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case 2:
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return Row((s_shapes[m_shape][m_rotation] >> 4) & 0xf);
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case 3:
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return Row(s_shapes[m_shape][m_rotation] & 0xf);
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default:
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return Row {};
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}
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}
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};
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class Bricks final {
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public:
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enum class GameState {
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Active,
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Paused,
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GameOver
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};
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// Game will request a UI update when any of these events occur:
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// - score changes
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// - level changes
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// - current block position or rotation changes
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// - any well row(s) state change
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enum class RenderRequest {
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SkipRender,
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RequestUpdate
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};
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Bricks() { reset(); }
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[[nodiscard]] unsigned score() const { return m_score; }
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[[nodiscard]] unsigned level() const { return m_level; }
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[[nodiscard]] GameState state() const { return m_state; }
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void add_new_block()
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{
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m_block = m_next_block;
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m_next_block.random_shape();
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m_state = m_block.has_collision(m_well) ? GameState::GameOver : GameState::Active;
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}
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[[nodiscard]] Block const& next_block() const { return m_next_block; }
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[[nodiscard]] BrickGame::BoardSpace operator[](Position pos) const
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{
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if (m_well[pos] || m_block[pos])
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return BrickGame::BoardSpace::FullyOn;
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if (m_shadow_hint_block[pos])
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return BrickGame::BoardSpace::ShadowHint;
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return BrickGame::BoardSpace::Off;
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}
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[[nodiscard]] RenderRequest rotate_left() { return set_current_block(Block(m_block).rotate_left()); }
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[[nodiscard]] RenderRequest rotate_right() { return set_current_block(Block(m_block).rotate_right()); }
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[[nodiscard]] RenderRequest move_left() { return set_current_block(Block(m_block).move_left()); }
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[[nodiscard]] RenderRequest move_right() { return set_current_block(Block(m_block).move_right()); }
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[[nodiscard]] RenderRequest move_down()
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{
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auto const block = Block(m_block).move_down();
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if (block.has_collision(m_well)) {
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m_block.place_into(m_well);
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check_and_remove_full_rows();
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add_new_block();
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update_shadow_hint_block();
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return RenderRequest::RequestUpdate;
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}
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m_block = block;
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update_shadow_hint_block();
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return RenderRequest::RequestUpdate;
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}
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[[nodiscard]] RenderRequest move_down_fast()
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{
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for (auto block = m_block;; block.move_down()) {
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if (block.has_collision(m_well)) {
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m_block.place_into(m_well);
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check_and_remove_full_rows();
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add_new_block();
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break;
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}
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m_block = block;
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}
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update_shadow_hint_block();
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return RenderRequest::RequestUpdate;
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}
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void update_shadow_hint_block()
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{
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for (auto block = m_block;; block.move_down()) {
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if (block.has_collision(m_well))
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return;
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m_shadow_hint_block = block;
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}
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}
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void toggle_pause()
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{
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switch (m_state) {
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case GameState::Active:
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m_state = GameState::Paused;
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break;
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case GameState::Paused:
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m_state = GameState::Active;
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break;
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case GameState::GameOver:
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break;
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}
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}
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[[nodiscard]] RenderRequest update()
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{
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auto const current_level { m_level };
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for (size_t i = 0; i < s_level_map.size(); i++) {
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if (m_score < s_level_map[i].m_score)
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break;
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m_level = i;
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}
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auto const now { UnixDateTime::now() };
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auto const delay = s_level_map[m_level].m_delay;
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if (now - m_last_update > delay) {
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m_last_update = now;
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return move_down();
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}
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return current_level == m_level ? RenderRequest::SkipRender : RenderRequest::RequestUpdate;
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}
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void reset()
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{
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m_level = 0;
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m_score = 0;
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m_well.reset();
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m_block.random_shape();
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m_next_block.random_shape();
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update_shadow_hint_block();
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m_last_update = UnixDateTime::now();
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m_state = GameState::Active;
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}
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private:
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Well m_well {};
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Block m_block {};
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Block m_next_block {};
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Block m_shadow_hint_block {};
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unsigned m_level {};
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unsigned m_score {};
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GameState m_state { GameState::GameOver };
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// FIXME: Should probably use a monotonic clock instead.
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UnixDateTime m_last_update {};
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struct LevelMap final {
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unsigned const m_score;
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Duration const m_delay;
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};
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static constexpr Array<LevelMap, 14> s_level_map = {
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LevelMap { 0, Duration::from_milliseconds(38000 / 60) },
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LevelMap { 1000, Duration::from_milliseconds(34000 / 60) },
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LevelMap { 2000, Duration::from_milliseconds(29000 / 60) },
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LevelMap { 3000, Duration::from_milliseconds(25000 / 60) },
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LevelMap { 4000, Duration::from_milliseconds(22000 / 60) },
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LevelMap { 5000, Duration::from_milliseconds(18000 / 60) },
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LevelMap { 6000, Duration::from_milliseconds(15000 / 60) },
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LevelMap { 7000, Duration::from_milliseconds(11000 / 60) },
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LevelMap { 8000, Duration::from_milliseconds(7000 / 60) },
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LevelMap { 9000, Duration::from_milliseconds(5000 / 60) },
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LevelMap { 10000, Duration::from_milliseconds(4000 / 60) },
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LevelMap { 20000, Duration::from_milliseconds(3000 / 60) },
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LevelMap { 30000, Duration::from_milliseconds(2000 / 60) },
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LevelMap { 10000000, Duration::from_milliseconds(1000 / 60) }
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};
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[[nodiscard]] RenderRequest set_current_block(Block const& block)
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{
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if (!block.has_collision(m_well)) {
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m_block = block;
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update_shadow_hint_block();
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return RenderRequest::RequestUpdate;
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}
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return RenderRequest::SkipRender;
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}
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RenderRequest check_and_remove_full_rows()
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{
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auto const number_of_removed_rows { m_well.check_and_remove_full_rows() };
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switch (number_of_removed_rows) {
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case 0:
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return RenderRequest::SkipRender;
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case 1:
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m_score += 40 * (m_level + 1);
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break;
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case 2:
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m_score += 100 * (m_level + 1);
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break;
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case 3:
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m_score += 300 * (m_level + 1);
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break;
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case 4:
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m_score += 1200 * (m_level + 1);
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break;
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default:
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VERIFY_NOT_REACHED();
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}
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return RenderRequest::RequestUpdate;
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}
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};
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BrickGame::BrickGame(StringView app_name)
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: m_app_name { app_name }
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, m_state { GameState::Idle }
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, m_brick_game(make<Bricks>())
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{
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set_font(Gfx::FontDatabase::default_fixed_width_font().bold_variant());
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m_high_score = Config::read_i32(m_app_name, m_app_name, "HighScore"sv, 0);
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reset();
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}
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void BrickGame::reset()
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{
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m_state = GameState::Active;
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m_brick_game->reset();
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stop_timer();
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start_timer(15); // 66.6ms
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m_brick_game->add_new_block();
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// A new game must always succeed to start, otherwise it is not fun to play
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VERIFY(m_brick_game->state() == Bricks::GameState::Active);
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update();
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}
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void BrickGame::toggle_pause()
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{
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m_brick_game->toggle_pause();
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update();
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}
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void BrickGame::set_show_shadow_hint(bool should_show)
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{
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m_show_shadow_hint = should_show;
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repaint();
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}
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bool BrickGame::show_shadow_hint()
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{
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return m_show_shadow_hint;
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}
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void BrickGame::timer_event(Core::TimerEvent&)
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{
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switch (m_brick_game->state()) {
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case Bricks::GameState::GameOver:
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game_over();
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break;
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case Bricks::GameState::Active:
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if (m_brick_game->update() == Bricks::RenderRequest::RequestUpdate)
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update();
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break;
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case Bricks::GameState::Paused:
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break;
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}
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}
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void BrickGame::keydown_event(GUI::KeyEvent& event)
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{
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switch (event.key()) {
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case KeyCode::Key_Escape:
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case KeyCode::Key_P:
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toggle_pause();
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return;
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default:
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break;
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}
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if (m_brick_game->state() == Bricks::GameState::Paused) {
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event.ignore();
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return;
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}
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Bricks::RenderRequest render_request { Bricks::RenderRequest::SkipRender };
|
|
switch (event.key()) {
|
|
case KeyCode::Key_A:
|
|
case KeyCode::Key_H:
|
|
case KeyCode::Key_Left:
|
|
render_request = m_brick_game->move_left();
|
|
break;
|
|
case KeyCode::Key_D:
|
|
case KeyCode::Key_L:
|
|
case KeyCode::Key_Right:
|
|
render_request = m_brick_game->move_right();
|
|
break;
|
|
case KeyCode::Key_W:
|
|
case KeyCode::Key_K:
|
|
case KeyCode::Key_Up:
|
|
render_request = m_brick_game->rotate_right();
|
|
break;
|
|
case KeyCode::Key_E:
|
|
render_request = m_brick_game->rotate_left();
|
|
break;
|
|
case KeyCode::Key_S:
|
|
case KeyCode::Key_Down:
|
|
render_request = m_brick_game->move_down();
|
|
break;
|
|
case KeyCode::Key_Space:
|
|
render_request = m_brick_game->move_down_fast();
|
|
break;
|
|
default:
|
|
event.ignore();
|
|
break;
|
|
}
|
|
if (render_request == Bricks::RenderRequest::RequestUpdate)
|
|
update();
|
|
}
|
|
|
|
void BrickGame::paint_cell(GUI::Painter& painter, Gfx::IntRect rect, BrickGame::BoardSpace space)
|
|
{
|
|
Color inside_color;
|
|
Color outside_color;
|
|
|
|
switch (space) {
|
|
case BrickGame::BoardSpace::FullyOn:
|
|
inside_color = m_front_color;
|
|
outside_color = m_front_color;
|
|
break;
|
|
case BrickGame::BoardSpace::ShadowHint:
|
|
inside_color = m_shadow_color;
|
|
outside_color = m_show_shadow_hint ? m_hint_block_color : m_shadow_color;
|
|
break;
|
|
case BrickGame::BoardSpace::Off:
|
|
inside_color = m_shadow_color;
|
|
outside_color = m_shadow_color;
|
|
break;
|
|
}
|
|
|
|
painter.draw_rect(rect, m_back_color);
|
|
rect.inflate(-1, -1, -1, -1);
|
|
painter.draw_rect(rect, outside_color);
|
|
painter.set_pixel(rect.top_left(), m_back_color);
|
|
painter.set_pixel(rect.bottom_left().moved_up(1), m_back_color);
|
|
painter.set_pixel(rect.top_right().moved_left(1), m_back_color);
|
|
painter.set_pixel(rect.bottom_right().translated(-1), m_back_color);
|
|
rect.inflate(-2, -2);
|
|
painter.draw_rect(rect, outside_color);
|
|
rect.inflate(-2, -2);
|
|
painter.draw_rect(rect, m_back_color);
|
|
rect.inflate(-2, -2);
|
|
painter.draw_rect(rect, m_back_color);
|
|
rect.inflate(-2, -2);
|
|
painter.fill_rect(rect, inside_color);
|
|
}
|
|
|
|
void BrickGame::paint_sidebar_text(GUI::Painter& painter, int row, StringView text)
|
|
{
|
|
auto const text_width = font().width_rounded_up(text);
|
|
auto const entire_area_rect { frame_inner_rect() };
|
|
auto const margin = 4;
|
|
auto const rect { Gfx::IntRect { entire_area_rect.x() + entire_area_rect.width() - 116,
|
|
2 * margin + entire_area_rect.y() + (font().pixel_size_rounded_up() + margin) * row,
|
|
text_width, font().pixel_size_rounded_up() } };
|
|
painter.draw_text(rect, text, Gfx::TextAlignment::TopLeft, Color::Black);
|
|
}
|
|
|
|
void BrickGame::paint_paused_text(GUI::Painter& painter)
|
|
{
|
|
auto const paused_text = "Paused"sv;
|
|
auto const paused_text_width = font().width_rounded_up(paused_text);
|
|
auto const more_or_less_font_height = static_cast<int>(font().pixel_size_rounded_up());
|
|
auto const entire_area_rect { frame_inner_rect() };
|
|
auto const margin = more_or_less_font_height * 2;
|
|
|
|
auto pause_text_box = Gfx::IntRect({}, { paused_text_width + margin, more_or_less_font_height + margin }).centered_within(entire_area_rect);
|
|
painter.fill_rect(pause_text_box, m_front_color);
|
|
|
|
pause_text_box.inflate(-2, -2);
|
|
painter.fill_rect(pause_text_box, m_back_color);
|
|
|
|
painter.draw_text(frame_inner_rect(), paused_text, Gfx::TextAlignment::Center, Color::Black);
|
|
}
|
|
|
|
ErrorOr<void> BrickGame::paint_game(GUI::Painter& painter, Gfx::IntRect const& rect)
|
|
{
|
|
painter.fill_rect(rect, m_back_color);
|
|
if (m_state == GameState::Active) {
|
|
// TODO: optimize repainting
|
|
painter.draw_rect(rect.inflated(-4, -4), m_front_color);
|
|
|
|
auto const entire_area_rect { frame_inner_rect() };
|
|
Gfx::IntRect well_rect { entire_area_rect };
|
|
well_rect.inflate(0, -120, 0, 0);
|
|
well_rect.inflate(-4, -4);
|
|
painter.draw_rect(well_rect, m_front_color);
|
|
well_rect.inflate(-4, -4);
|
|
|
|
auto const cell_size = Gfx::IntSize(well_rect.width() / Well::number_of_columns(), well_rect.height() / (Well::number_of_rows() - Well::top_margin() - Well::bottom_margin()));
|
|
auto cell_rect = [&](Position pos) {
|
|
return Gfx::IntRect {
|
|
well_rect.x() + pos.x() * cell_size.width(),
|
|
well_rect.y() + pos.y() * cell_size.height(),
|
|
cell_size.width() - 1,
|
|
cell_size.height() - 1
|
|
};
|
|
};
|
|
|
|
auto const number_of_columns = int(Well::number_of_columns());
|
|
auto const number_of_rows = int(Well::number_of_rows() - Well::top_margin() - Well::bottom_margin());
|
|
for (int row = 0; row < number_of_rows; ++row)
|
|
for (int col = 0; col < number_of_columns; ++col) {
|
|
auto const position = Position { col, row };
|
|
auto const board_position = position.translated(int(Well::left_margin()), int(Well::top_margin()));
|
|
paint_cell(painter, cell_rect(position), (*m_brick_game)[board_position]);
|
|
}
|
|
|
|
paint_sidebar_text(painter, 0, TRY(String::formatted("Score: {}", m_brick_game->score())));
|
|
paint_sidebar_text(painter, 1, TRY(String::formatted("Level: {}", m_brick_game->level())));
|
|
paint_sidebar_text(painter, 4, TRY(String::formatted("Hi-Score: {}", m_high_score)));
|
|
paint_sidebar_text(painter, 12, "Next:"sv);
|
|
|
|
auto const hint_rect = Gfx::IntRect {
|
|
frame_inner_rect().x() + frame_inner_rect().width() - 105,
|
|
frame_inner_rect().y() + 200,
|
|
int(cell_size.width() * Block::shape_size),
|
|
int(cell_size.height() * Block::shape_size)
|
|
};
|
|
|
|
painter.draw_rect(hint_rect.inflated(4, 4), m_front_color);
|
|
|
|
auto const dot_rect = Gfx::IntRect { hint_rect.x(), hint_rect.y(), cell_size.width() - 1, cell_size.height() - 1 };
|
|
for (size_t y = 0; y < Block::shape_size; ++y)
|
|
for (size_t x = 0; x < Block::shape_size; ++x)
|
|
paint_cell(painter,
|
|
dot_rect.translated(int(x * cell_size.width()), int(y * cell_size.height())),
|
|
m_brick_game->next_block().dot_at({ x, y }) ? BrickGame::BoardSpace::FullyOn : BrickGame::BoardSpace::Off);
|
|
|
|
if (m_brick_game->state() == Bricks::GameState::Paused)
|
|
paint_paused_text(painter);
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
void BrickGame::paint_event(GUI::PaintEvent& event)
|
|
{
|
|
GUI::Frame::paint_event(event);
|
|
GUI::Painter painter(*this);
|
|
painter.add_clip_rect(frame_inner_rect());
|
|
painter.add_clip_rect(event.rect());
|
|
paint_game(painter, frame_inner_rect()).release_value_but_fixme_should_propagate_errors();
|
|
}
|
|
|
|
void BrickGame::game_over()
|
|
{
|
|
stop_timer();
|
|
StringBuilder text;
|
|
auto const current_score = m_brick_game->score();
|
|
text.appendff("Your score was {}", current_score);
|
|
if (current_score > m_high_score) {
|
|
text.append("\nThat's a new high score!"sv);
|
|
Config::write_i32(m_app_name, m_app_name, "HighScore"sv, int(m_high_score = current_score));
|
|
}
|
|
GUI::MessageBox::show(window(),
|
|
text.string_view(),
|
|
"Game Over"sv,
|
|
GUI::MessageBox::Type::Information);
|
|
|
|
reset();
|
|
}
|