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Added contract check for remote and human player
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package tsuro; | ||
| import java.util.*; | ||
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| public abstract class APlayer { | ||
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| public State state; | ||
| public enum State { BORN, PLAY, DEAD } | ||
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| /** | ||
| * Get the name of the APlayer | ||
| * @return name of the APlayer | ||
| */ | ||
| public abstract String getName() throws Exception; | ||
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| /** | ||
| * Called to indicate a game is starting | ||
| * @param color the APlayer's color | ||
| * @param colors all of the APlayers' color, in the order that the game will be played | ||
| */ | ||
| public abstract void initialize(int color, List<Integer> colors) throws Exception; | ||
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| /** | ||
| * Called at the first step in a game indicates where the APlayer wishes to place their token | ||
| * token must be placed along the edge in an unoccupied space | ||
| * @param b the current board state | ||
| * @return a token with the APlayer's color, its position [x,y] and index on tile | ||
| */ | ||
| public abstract Token placePawn(Board b) throws Exception; | ||
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| /** | ||
| * Called to ask the APlayer to make a move | ||
| * @param b the current board state | ||
| * @param tilesLeft count of tiles that are not yet handed out to APlayers | ||
| * @return the tile the APlayer should place, suitably rotated | ||
| */ | ||
| public abstract Tile playTurn(Board b, List<Tile> hand, int tilesLeft) throws Exception; | ||
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| /** | ||
| * Called to inform the APlayer of the final board state and which APlayers won the game. | ||
| * @param b the current board game | ||
| * @param colors the list of winner's colors | ||
| */ | ||
| public abstract void endGame(Board b, List<Integer> colors) throws Exception; | ||
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| /** | ||
| * Check APlayer's state against sequential contract | ||
| * @param method string name of caller method | ||
| */ | ||
| public void checkState(String method) { | ||
| switch (method) { | ||
| case "initialize": | ||
| if (state != MPlayer.State.DEAD && state != null) { | ||
| throw new IllegalArgumentException("Sequential Contracts: Cannot initialize at this time"); | ||
| } | ||
| state = MPlayer.State.BORN; | ||
| break; | ||
| case "place-pawn": | ||
| if (state != MPlayer.State.BORN) { | ||
| throw new IllegalArgumentException("Sequential Contracts: Cannot place pawn at this time"); | ||
| } | ||
| state = MPlayer.State.PLAY; | ||
| break; | ||
| case "play-turn": | ||
| if (state != MPlayer.State.PLAY) { | ||
| throw new IllegalArgumentException("Sequential Contracts: Cannot play turn at this time"); | ||
| } | ||
| break; | ||
| case "end-game": | ||
| if (state != MPlayer.State.PLAY) { | ||
| throw new IllegalArgumentException("Sequential Contracts: Cannot end game at this time"); | ||
| } | ||
| state = MPlayer.State.DEAD; | ||
| break; | ||
| default: | ||
| throw new IllegalArgumentException("Sequential Contract: Invalid caller method"); | ||
| } | ||
| } | ||
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| /** | ||
| * Check a color and a list of colors against certain constraints | ||
| * @param color a color | ||
| * @param colors a list of colors | ||
| */ | ||
| public void validColorAndColors(int color, List<Integer> colors) { | ||
| if (!colors.contains(color)){ | ||
| throw new IllegalArgumentException("Player is not authorized to be initialized"); | ||
| } | ||
| if (color < 0 || color > 7) { | ||
| throw new IllegalArgumentException("Invalid player's color"); | ||
| } | ||
| for (int c : colors) { | ||
| if (c < 0 || c > 7) { | ||
| throw new IllegalArgumentException("Player list contains invalid" + "player color"); | ||
| } | ||
| } | ||
| } | ||
| } |
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