Class: BTetrisKp::Board

Inherits:
Object
  • Object
show all
Defined in:
lib/btetris_kp/core/board.rb

Overview

class representing one tetris board

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window, posx, posy) ⇒ Board

Returns a new instance of Board.



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# File 'lib/btetris_kp/core/board.rb', line 9

def initialize(window, posx, posy)
  @window = window
  @tile_size = @window.width / 30

  # board corners position
  @posx = posx
  @posx2 = posx + Const::PNR_HOR * @tile_size
  @posy = posy
  @posy2 = posy + Const::PNR_VER * @tile_size

  # initializes board array and current piece
  @board = Array.new(Const::PNR_VER) { Array.new(Const::PNR_HOR, 0) }
  @cur_piece = Piece.new(@board, 0, Const::PNR_HOR / 3 + 1, rand(Const::TILES.size))
end

Instance Attribute Details

#board ⇒ Object

Returns the value of attribute board.



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# File 'lib/btetris_kp/core/board.rb', line 7

def board
  @board
end

#cur_piece ⇒ Object

Returns the value of attribute cur_piece.



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# File 'lib/btetris_kp/core/board.rb', line 7

def cur_piece
  @cur_piece
end

Instance Method Details

#clear_row!(row_index) ⇒ Object

moves down all rows with smaller index then row_index, removing row at row_index content in the process



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# File 'lib/btetris_kp/core/board.rb', line 114

def clear_row!(row_index)
  for index in row_index.downto(0) do
    copy_row(index - 1, index)
  end
end

#clear_rows! ⇒ Object

clears rows that are full, returns number of cleared rows



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# File 'lib/btetris_kp/core/board.rb', line 121

def clear_rows!
  cnt = 0
  @board.each_with_index do |row, index|
    unless row.include?(0)
      clear_row!(index)
      cnt += 1
    end
  end
  cnt
end

#copy_row(r1, r2) ⇒ Object

copies content of one row into another r1 - source row, r2 - destination row



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# File 'lib/btetris_kp/core/board.rb', line 85

def copy_row(r1, r2)
  if r1 < 0
    @board[r2].each_with_index { |val, index| @board[r2][index] = 0 }
  else
    @board[r1].each_with_index { |val, index| @board[r2][index] = val }
  end
end

#draw ⇒ Object

draws board and all blocks on it



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# File 'lib/btetris_kp/core/board.rb', line 187

def draw
  draw_background
  @cur_piece.set_on_board
  @board.each_with_index do |row, y|
    row.each_with_index do |val, x|
      draw_block(x, y, val)
    end
  end
  @cur_piece.unset_on_board
end

#draw_background ⇒ Object

draws board border and background



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# File 'lib/btetris_kp/core/board.rb', line 138

def draw_background
  @window.draw_quad(@posx, @posy, Const::BOARD_BACK_CLR,
                    @posx2, @posy, Const::BOARD_BACK_CLR,
                    @posx,  @posy2, Const::BOARD_BACK_CLR,
                    @posx2, @posy2, Const::BOARD_BACK_CLR)
  @window.draw_line(@posx - 1, @posy - 1, Const::BOARD_CLR,
                    @posx2 + 1, @posy - 1, Const::BOARD_CLR)
  @window.draw_line(@posx2 + 1, @posy - 1, Const::BOARD_CLR,
                    @posx2 + 1, @posy2 + 1, Const::BOARD_CLR)
  @window.draw_line(@posx - 1, @posy - 1, Const::BOARD_CLR,
                    @posx - 1, @posy2 + 1, Const::BOARD_CLR)
  @window.draw_line(@posx - 1, @posy2 + 1, Const::BOARD_CLR,
                    @posx2 + 1, @posy2 + 1, Const::BOARD_CLR)
end

#draw_block(x, y, val) ⇒ Object

draws block on board



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# File 'lib/btetris_kp/core/board.rb', line 154

def draw_block(x, y, val)
  unless val == 0
    x1 = @posx + x * @tile_size
    x2 = @posx + (x + 1) * @tile_size
    y1 = @posy + y * @tile_size
    y2 = @posy + (y + 1) * @tile_size

    @window.draw_quad(x1, y1, Const::TILE_COLORS[val],
                      x2, y1, Const::TILE_COLORS[val],
                      x1, y2, Const::TILE_COLORS[val],
                      x2, y2, Const::TILE_COLORS[val])

    @window.draw_line(x2 - 1, y1 + 1, Const::TILE_SHADOW_CLR[val],
                      x2 - 1, y2 - 1, Const::TILE_SHADOW_CLR[val])
    @window.draw_line(x1 + 1 , y2 - 1, Const::TILE_SHADOW_CLR[val],
                      x2 - 1, y2 - 1, Const::TILE_SHADOW_CLR[val])
    @window.draw_line(x2, y1, Const::TILE_SHADOW_CLR[val],
                      x2, y2, Const::TILE_SHADOW_CLR[val])
    @window.draw_line(x1, y2, Const::TILE_SHADOW_CLR[val],
                      x2, y2, Const::TILE_SHADOW_CLR[val])

    @window.draw_line(x1, y1, Const::TILE_BRIGHT_CLR[val],
                      x2, y1, Const::TILE_BRIGHT_CLR[val])
    @window.draw_line(x1, y1, Const::TILE_BRIGHT_CLR[val],
                      x1, y2, Const::TILE_BRIGHT_CLR[val])
    @window.draw_line(x1 + 1, y1 + 1, Const::TILE_BRIGHT_CLR[val],
                      x2 - 1, y1 + 1, Const::TILE_BRIGHT_CLR[val])
    @window.draw_line(x1 + 1, y1 + 1, Const::TILE_BRIGHT_CLR[val],
                      x1 + 1, y2 - 1, Const::TILE_BRIGHT_CLR[val])
  end
end

#fill_row_randomly(index) ⇒ Object

fills row randomly with blocks and spaces atleast one block has to be empty space



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# File 'lib/btetris_kp/core/board.rb', line 95

def fill_row_randomly(index)
  @board[index].each_with_index do |val, x|
    @board[index][x] = rand(Const::TILE_COLORS_NR + 1)
  end
  @board[index][rand(Const::PNR_HOR)] = 0
end

#from_s!(state) ⇒ Object

loads board content from string !!! (expects board to contain only nrs from 0 to 9) !!!



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# File 'lib/btetris_kp/core/board.rb', line 200

def from_s!(state)
  @board = state.split('').map { |i| i.to_i }.each_slice(Const::PNR_HOR).to_a
end

#game_over? ⇒ Boolean

checks if game is over

Returns:

  • (Boolean) 


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# File 'lib/btetris_kp/core/board.rb', line 133

def game_over?
  !@cur_piece.can_be_set?
end

#get_board_s ⇒ Object

returns string of board with current piece



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# File 'lib/btetris_kp/core/board.rb', line 205

def get_board_s
  @cur_piece.set_on_board
  s = to_s
  @cur_piece.unset_on_board
  s
end

#insert_garbage!(cnt) ⇒ Object

inserts garbage in board depending on count of cleared rows



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# File 'lib/btetris_kp/core/board.rb', line 103

def insert_garbage!(cnt)
  for index in cnt.upto(Const::PNR_VER - 1)
    copy_row(index, index - cnt)
  end
  for index in (Const::PNR_VER - cnt).upto(Const::PNR_VER - 1)
    fill_row_randomly(index)
  end
end

#new_piece! ⇒ Object

generates new piece, current piece is set on board and replaced by new one



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# File 'lib/btetris_kp/core/board.rb', line 26

def new_piece!
  @cur_piece.set_on_board
  @cur_piece = Piece.new(@board, 0, Const::PNR_HOR / 3 + 1, rand(Const::TILES.size))
end

#next_step! ⇒ Object

next step of game, returns count of cleared rows



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# File 'lib/btetris_kp/core/board.rb', line 72

def next_step!
  cnt = 0
  @cur_piece.move_down!
  unless @cur_piece.can_be_set?
    @cur_piece.move_up!
    new_piece!
    cnt = clear_rows!
  end
  cnt
end

#piece_down! ⇒ Object

moves piece down faster



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# File 'lib/btetris_kp/core/board.rb', line 52

def piece_down!
  @cur_piece.move_down!
  @cur_piece.move_up! unless @cur_piece.can_be_set?
end

#piece_drop! ⇒ Object

drops peace down as far as possible



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# File 'lib/btetris_kp/core/board.rb', line 66

def piece_drop!
  @cur_piece.move_down! while @cur_piece.can_be_set?
  @cur_piece.move_up!
end

#piece_left! ⇒ Object

moves piece left



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# File 'lib/btetris_kp/core/board.rb', line 40

def piece_left!
  @cur_piece.move_left!
  @cur_piece.move_right! unless @cur_piece.can_be_set?
end

#piece_right! ⇒ Object

moves piece right



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# File 'lib/btetris_kp/core/board.rb', line 46

def piece_right!
  @cur_piece.move_right!
  @cur_piece.move_left! unless @cur_piece.can_be_set?
end

#piece_rotate! ⇒ Object

rotates piece, returns true when successful



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# File 'lib/btetris_kp/core/board.rb', line 58

def piece_rotate!
  @cur_piece.rotate_right!
  return true if @cur_piece.can_be_set?
  @cur_piece.rotate_left!
  false
end

#piece_stuck? ⇒ Boolean

checks whether piece can move down

Returns:

  • (Boolean) 


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# File 'lib/btetris_kp/core/board.rb', line 32

def piece_stuck?
  @cur_piece.move_down!
  can_be_set = @cur_piece.can_be_set?
  @cur_piece.move_up!
  !can_be_set
end

#to_s ⇒ Object

converts board content to string



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# File 'lib/btetris_kp/core/board.rb', line 213

def to_s
  s = ''
  @board.each do |row|
    row.each do |val|
      s << val.to_s
    end
  end
  s
end