package mover.proto

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* A possible direction of movement.

Used in: PlayerState, PlayerUndo

• NONE = 0

  * NONE is the direction of players that are not moving, in particular after the steps_left have counted down to zero.

• RIGHT = 1

• LEFT = 2

• UP = 3

• DOWN = 4

• RIGHT_UP = 5

• RIGHT_DOWN = 6

• LEFT_UP = 7

• LEFT_DOWN = 8

* The full game state.

• map<string, PlayerState> players = 1

  * All players on the map and their current state.

* The state of a particular player in Mover.

Used in: GameState

• optional sint32 x = 1

  * The current x coordinate.

• optional sint32 y = 2

  * The current y coordinate.

• optional Direction dir = 3

  * The direction of movement.

• optional uint32 steps_left = 4

  * The remaining number of movement steps left.

* The undo data for a single player.

Used in: UndoData

• optional bool is_new = 1

  * Set to true if the player was not present previously, i.e. if it was first moved and created on the map for this block.

• optional Direction previous_dir = 2

  * Previous direction of the player, if it was changed explicitly.

• optional uint32 previous_steps_left = 3

  * Previous steps left if the number was changed explicitly by a move.

• optional Direction finished_dir = 4

  * Previous direction of the player if it counted down to zero and was changed to NONE in this block. In theory, this field could be merged with previous_dir. It is possible that both are set, namely when a move with steps=1 was made. But this case could be reversed using the move data. The potential space savings here seem minor, though, so we use a separate field to simplify the logic.

* The full undo data for a block.

• map<string, PlayerUndo> players = 1

  * Undo data for each player that needs one.