script/board.gd

   1 extends Control
   2 class_name Board
   3
   4 @export var block_size: int = 20
   5 @export var piece_catalogue: Array[PackedScene] = []
   6
   7 var _grid_filled: Array[bool] = []
   8 var _player_position: Vector2i = Vector2i.ZERO
   9 var _player_piece: Piece = null
  10 var _grid_final_y_row: int = 0
  11 var _grid_final_x_row: int = 0
  12
  13 var _num_pieces: int = 0
  14
  15 func _ready() -> void:
  16         assert(piece_catalogue.size() >= 1, "Expected at least one piece in catalogue")
  17
  18         # calculate grid
  19         _grid_final_y_row = size.y / block_size
  20         _grid_final_x_row = size.x / block_size
  21         print("Grid is " + str(_grid_final_x_row) + " by " + str(_grid_final_y_row))
  22
  23         for i in range(0, _grid_final_x_row):
  24                 for j in range(0, _grid_final_y_row):
  25                         _grid_filled.append(false)
  26
  27         _on_turn_timer_timeout()
  28
  29
  30 func _input(event: InputEvent) -> void:
  31         if event.is_action_pressed("player_left"):
  32                 _move(Vector2i(-1, 0))
  33         elif event.is_action_pressed("player_right"):
  34                 _move(Vector2i(1, 0))
  35
  36         if event.is_action_pressed("player_up"):
  37                 # TODO: rotate
  38                 pass
  39
  40         if event.is_action("player_down"):
  41                 _move(Vector2i(0, 1))
  42
  43
  44 func _add_player_piece():
  45         var scene: PackedScene = piece_catalogue.pick_random()
  46         var piece: Piece = scene.instantiate()
  47         piece.block_size = block_size
  48
  49         _player_position = Vector2i(5, 0)
  50         piece.position = _player_position * block_size
  51         _player_piece = piece
  52
  53         add_child(piece)
  54         _num_pieces += 1
  55
  56
  57 func _move(v: Vector2i):
  58         var new_player_position: Vector2i = _player_position + v
  59
  60         if new_player_position.x < 0 or new_player_position.x >= _grid_final_x_row:
  61                 # ignore input that moves beyond lateral boundaries
  62                 return
  63
  64         if _is_grid_position_taken(new_player_position):
  65                 # if movement is vertical and blocked, then we're done
  66                 if v.y != 0:
  67                         _end_round()
  68                 return
  69
  70         # update player position
  71         _player_position = new_player_position
  72         if _player_piece:
  73                 _player_piece.position = _player_position * block_size
  74
  75         # if at the bottom of the grid, we're done
  76         if (_player_position.y == _grid_final_y_row - 1):
  77                 _end_round()
  78
  79 func _end_round():
  80                 # disconnect player controls from current piece
  81                 _player_piece = null
  82
  83                 # fill in collision grid with piece cells
  84                 _set_grid_position(_player_position, true)
  85
  86                 # now start a new round
  87                 _on_turn_timer_timeout()
  88
  89
  90 func _on_turn_timer_timeout() -> void:
  91         if _player_piece == null:
  92                 _add_player_piece()
  93         else:
  94                 _move(Vector2i(0, 1))
  95         %turnTimer.start()
  96
  97
  98 func _set_grid_position(v: Vector2i, b: bool):
  99         _grid_filled[v.x + v.y * _grid_final_x_row] = b
 100
 101
 102 func _is_grid_position_taken(v: Vector2i) -> bool:
 103         return _grid_filled[v.x + v.y * _grid_final_x_row]
 104
 105
 106 func _print_grid():
 107         for i in range(0, _grid_final_y_row):
 108                 var row = []
 109                 for j in range(0, _grid_final_x_row):
 110                         row.append(_grid_filled[j + i * _grid_final_x_row])
 111                 print(str(row))