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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | daniel-mar | 1 | package gdi1sokoban.game; |
| 2 | |||
| 3 | import java.util.LinkedList; |
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| 4 | import java.util.List; |
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| 5 | |||
| 6 | /** |
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| 7 | * GameLevelHistory class |
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| 8 | * |
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| 9 | * manages processed game steps |
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| 10 | */ |
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| 11 | class GameLevelHistory { |
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| 12 | private LinkedList<Character> moveHistory = new LinkedList<Character>(); // stores all moves made in a level |
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| 13 | private int steps = 0; // completed valid steps by the player |
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| 14 | private char[][] historyBegin; // the level when no moves are made |
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| 15 | /** |
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| 16 | * Adds a move with the given direction to the History |
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| 17 | * and updates the step-counter |
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| 18 | * @param direction |
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| 19 | */ |
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| 20 | void addMove(final char direction){ |
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| 21 | steps++; // increment step counter |
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| 22 | moveHistory.add(direction); // Add direction char to history |
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| 23 | } |
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| 24 | /** |
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| 25 | * deletes all steps made after the current one |
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| 26 | */ |
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| 27 | void deleteAfterCurrent(){ |
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| 28 | if(moveHistory.size() >= steps){ |
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| 29 | final List<Character> currHistory = moveHistory.subList(0, steps); // List to store all moves untill current one |
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| 30 | moveHistory = new LinkedList<Character>(); // reset history |
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| 31 | moveHistory.addAll(0, currHistory); // insert moves into History |
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| 32 | } |
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| 33 | } |
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| 34 | /** |
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| 35 | * resets the counter |
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| 36 | */ |
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| 37 | void reset(){ |
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| 38 | steps = 0; |
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| 39 | moveHistory.clear(); |
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| 40 | } |
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| 41 | |||
| 42 | /** |
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| 43 | * sets the steps counter |
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| 44 | * @param steps value of the step counter |
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| 45 | */ |
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| 46 | public void setSteps(final int steps) { |
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| 47 | this.steps = steps; |
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| 48 | } |
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| 49 | /** |
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| 50 | * sets the level Map with that the history begins |
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| 51 | * @param gameMap map of this level |
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| 52 | */ |
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| 53 | void setStart(final char[][] startMap){ |
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| 54 | // copy given array into historyBegin array |
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| 55 | historyBegin = new char[startMap.length][startMap[0].length]; |
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| 56 | for(int i = 0; i<startMap.length; i++) |
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| 57 | for(int j=0; j<startMap[0].length; j++) |
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| 58 | historyBegin[i][j] = startMap[i][j]; |
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| 59 | |||
| 60 | } |
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| 61 | /** |
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| 62 | * returns the map where the history started logging |
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| 63 | * @return game Map where everything is placed as it was when the History logger was started |
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| 64 | */ |
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| 65 | char[][] getStart(){ |
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| 66 | // always return copy of array because otherwise java returns a reference |
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| 67 | final char[][] historyBeginCopy = new char[historyBegin.length][historyBegin[0].length]; |
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| 68 | for(int i = 0; i<historyBegin.length; i++) |
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| 69 | for(int j=0; j<historyBegin[0].length; j++) |
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| 70 | historyBeginCopy[i][j] = historyBegin[i][j]; |
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| 71 | return historyBeginCopy; |
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| 72 | } |
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| 73 | /** |
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| 74 | * get number of steps made so far |
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| 75 | * @return the number of steps made in this level ( = the position is history) |
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| 76 | */ |
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| 77 | int getSteps() { |
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| 78 | return steps; |
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| 79 | } |
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| 80 | /** |
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| 81 | * sets the history-entries to the given value |
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| 82 | * @param listOfDirections LinkedList of directions |
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| 83 | */ |
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| 84 | void setHistory(final LinkedList<Character> listOfDirections){ |
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| 85 | moveHistory = listOfDirections; |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * get the move History as LinkedList |
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| 90 | * @return moveHistory |
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| 91 | */ |
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| 92 | LinkedList<Character> getMoveHistory(){ |
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| 93 | return moveHistory; |
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| 94 | } |
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| 95 | } |