colosseumrl.envs.blokus.computation module¶

Author: Caleb Pitts Date: 3/15/19

Summary: - Contains computation methods that board.py uses to

manage valid move seeks and piece placement.

Methods use Numba with jit decorator that precompiles types and makes runtime faster than normal python.

colosseumrl.envs.blokus.computation.check_shifted[source]¶

Shifts entire piece N times were N is how many cells the piece takes up.: All shifted offsets are checked for the current orientation to see whether the shifted set of offsets is a valid move.
Parameters:: board_contents: 20 by 20 numpy matrix representing the current state of the board played_color: int representing current player color index: int tuple that specifies the index coordinate on the board (the coord the piece will rotate around) orientation: string specifying which orientation is being checked shifted_offsets: list of a list of tuples where each element in the main list represents a different set of coords

for a shifted piece.
Returns:: Returns the list of ints representing the shifted offsets ids where the piece can be placed at that set of shifted offsets

Type: Description

colosseumrl.envs.blokus.computation.flip_piece_x[source]¶: Takes the difference between index x and point x, then applies reverse difference to the index point. y stays the same

colosseumrl.envs.blokus.computation.flip_piece_y[source]¶: Takes the difference between index y and point y, then applies reverse difference to the index point. x stays the same

colosseumrl.envs.blokus.computation.get_all_shifted_offsets[source]¶

Compiles a list of all shifted offsets for a piece at a specific orientation.: Returns a numpy array, which is a list of a list of tuples which each contain a shifted offset.
Parameters:: offsets: numpy array of tuples containing the coords of offsets needing do be shifted orientation: string specifying the orientation that the shifts should take place
Returns:: list of all shifted orientations a piece can make at a given orientation

Type: Description

colosseumrl.envs.blokus.computation.is_valid_adjacents[source]¶

Invalid coord if left, right, bottom, or top cell is the same color as the current player. Parameters:

board_contents: 20 by 20 numpy matrix representing the current state of the board x: int x coord of the cell y: int y coord of the cell player_color: int representing current player color

Returns:: bool indicating whether the cell is a valid adjacent

Type: Description

colosseumrl.envs.blokus.computation.is_valid_cell[source]¶

If the cell x, y is empty, has no adjacent cells that are the same color,: and is not out of bounds of the 20x20 board, then the cell is valid to put a part of a piece on it.
Parameters:: board_contents: 20 by 20 numpy matrix representing the current state of the board x: int x coord of the cell y: int y coord of the cell player_color: int representing current player color
Returns:: bool indicating whether the cell is a valid cell

Type: Description

colosseumrl.envs.blokus.computation.rotate_by_deg[source]¶: Rotates each point on piece around the index by the given angle

colosseumrl.envs.blokus.computation.rotate_default_piece[source]¶

Rotates the initial default piece orientation for shifting. Parameters:

offsets: numpy array of tuples indicated all corresponding offsets to a specific piece type orientation: string indicating the orientation to rotate the offset pieces

Returns:: numpy list of all offsets for given orientation

Type: Description

colosseumrl.envs.blokus.computation.rotate_piece[source]¶

Orients piece around the index point Parameters:

index: int tuple that specifies the index coordinate on the board (the coord the piece will rotate around) offset: int tuple that specifies the offset from the index coord for the current cell piece_orientation: string specifying what new orientation you want the point at

Returns:: 2 ints x and y that are the new rotated piece coords

Type: Description

colosseumrl.envs.blokus.computation.shift_offsets[source]¶

Shifts the offsets so that the offset that corresponds to the offset_id is the new index Parameters:

offsets: numpy array of tuples containing the coords of offsets needing do be shifted offset_id: identifies which coord becomes the new index in the list of offsets

Returns:: numpy array of tuples containing the newly shifted offsets

Type: Description