Onitama
321 CodinGamers in the Onitama arena
Approved by trictrac darkhorse64 Illedan
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Learning Opportunities
This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.
Statement
The Goal
The goal is to reach the opponent shrine with your master or to capture the opponent master.
Rules
Onitama is played on a 5 x5 board. Each player has 1 master and 4 students.
The players have to protect a shrine, which is at the starting cell of their master. The game will end as a tie, if no player succeeds within 200 turns.
Cards
Each player has2 cards. A 5th card is in between both players. When a player uses one of his cards, he places it in the center and gets the other card from the center in return.
A card gives a set of2 to 4 possible move actions.
The card placed in the center will be rotated by 180 degrees. This gives each move a direction such as "forward", which translates to "up" or "down" depending on the player.
Moving units
To move a unit, a player selects one of his cards. He then chooses a move pattern defined by the card and applies it to any of his own figures.
The destination field must either be free or occupied by an opponent. The opponent on that cell will then be eliminated from the game.
If there is no valid move, a player canPASS a card of his choice, effectively exchanging it with the center card without moving any unit.
Cards
Each player has
A card gives a set of
The card placed in the center will be rotated by 180 degrees. This gives each move a direction such as "forward", which translates to "up" or "down" depending on the player.
Moving units
To move a unit, a player selects one of his cards. He then chooses a move pattern defined by the card and applies it to any of his own figures.
The destination field must either be free or occupied by an opponent. The opponent on that cell will then be eliminated from the game.
If there is no valid move, a player can
Expert Rules
You can find the sourcecode of the game on https://github.com/eulerscheZahl/onitama
Game Input
Initial input
In the first turn you are given your playerId, which is 0 or 1 .
Input per turn
Line 1 - 5: the current board. A line consists of
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. : empty cell
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W : the master of player 0
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B : the master of player 1
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w : a student of player 0
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b : a student of player 1
Line 6 - 10: the cards in use. A card is defined by:
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owner:
0 or1 for the player,-1 for the card in the center
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cardId: the id of the card
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dx1: the x movement of the first action
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dy1: the y movement of the first action
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dx2: the x movement of the second action
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dy2: the y movement of the second action
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dx3: the x movement of the third action
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dy3: the y movement of the third action
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dx4: the x movement of the fourth action
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dy4: the y movement of the fourth action
The current rotation of the card is addressed in the input: the dx and dy values of the next player using the card are given. When the card is played, both values will be multiplied by
Line 11: actionCountthe number of possible actions
Next actionCount lines: cardId move denoting a valid move
Output
A single line cardID MOVE message
MOVE can be either a movement, giving source and destination cell (e.g.A2B3 will move the figure from A2 to the cell B3) or PASS to perform no action. Message is a text to display next to the avatar of the player.
MOVE can be either a movement, giving source and destination cell (e.g.
Constraints
Allotted response time to output is ≤ 50 ms .
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