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December 28, 2014 14:28
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Cell enum from Taphoo
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| package pl.org.xion.taphoo.logic; | |
| /** | |
| * An utility class to hold ranges of cells' values. | |
| * @author Xion | |
| */ | |
| final class CellRanges { | |
| /** | |
| * Private constructor to prevent instantiation. | |
| */ | |
| private CellRanges() { | |
| } | |
| // constants for value ranges | |
| public static final int FIRST = 0; | |
| public static final int NUMBER_FIRST = 1; | |
| public static final int NUMBER_LAST = 31; | |
| public static final int ARROW_CLASSIC_FIRST = 37; | |
| public static final int ARROW_CLASSIC_LAST = 40; | |
| public static final int ARROW_TURN_FIRST = 48; | |
| public static final int ARROW_TURN_LAST = 59; | |
| public static final int ARROW_DOUBLE1_FIRST = 64; | |
| public static final int ARROW_DOUBLE1_LAST = 75; | |
| public static final int ARROW_DOUBLE2_FIRST = 80; | |
| public static final int ARROW_DOUBLE2_LAST = 87; | |
| public static final int ARROW_DOUBLE3_FIRST = 92; | |
| public static final int ARROW_DOUBLE3_LAST = 95; | |
| public static final int TELEPORT_FIRST = 112; | |
| public static final int TELEPORT_LAST = 127; | |
| public static final int SWITCH_FIRST = 160; | |
| public static final int SWITCH_OFF_FIRST = 160; | |
| public static final int SWITCH_OFF_LAST = 175; | |
| public static final int SWITCH_ON_FIRST = 176; | |
| public static final int SWITCH_ON_LAST = 191; | |
| public static final int SWITCH_LAST = 191; | |
| public static final int DOOR_FIRST = 208; | |
| public static final int DOOR_CLOSED_FIRST = 208; | |
| public static final int DOOR_CLOSED_LAST = 223; | |
| public static final int DOOR_OPEN_FIRST = 224; | |
| public static final int DOOR_OPEN_LAST = 239; | |
| public static final int DOOR_LAST = 239; | |
| public static final int LAST = 255; | |
| } | |
| /** | |
| * Enumeration with possible cells and various utility functions to operate on them. | |
| * @author Xion | |
| */ | |
| public enum Cell { | |
| // WARNING: Do *not* change the order of the constants! | |
| Empty(0, new Direction[0]), | |
| // numbers | |
| One(1, Empty), Two(2, One), Three(3, Two), Four(4, Three), Five(5, Four), Six(6, Five), Seven(7, Six), Eight(8, Seven), Nine(9, Eight), Ten( | |
| 10, Nine), Eleven(11, Ten), Twelve(12, Eleven), Thirteen(13, Twelve), Fourteen(14, Thirteen), Fifteen(15, Fourteen), Sixteen( | |
| 16, Fifteen), Seventeen(17, Sixteen), Eighteen(18, Seventeen), Nineteen(19, Eighteen), Twenty(20, Nineteen), TwentyOne(21, | |
| Twenty), TwentyTwo(22, TwentyOne), TwentyThree(23, TwentyTwo), TwentyFour(24, TwentyThree), TwentyFive(25, TwentyFour), TwentySix( | |
| 26, TwentyFive), TwentySeven(27, TwentySix), TwentyEight(28, TwentySeven), TwentyNine(29, TwentyEight), Thirty(30, TwentyNine), ThirtyOne( | |
| 31, Thirty), | |
| // classic arrows | |
| // TODO: consider whether exitDirs should not be Direction.values() as in Ultimate Stuntman puzzles | |
| // (probably not) | |
| ArrowLeft(37, Direction.LEFT, Empty), ArrowUp(38, Direction.UP, Empty), ArrowRight(39, Direction.RIGHT, Empty), ArrowDown(40, | |
| Direction.DOWN, Empty), | |
| // single arrows with turns | |
| ArrowLeftToRight(48, Direction.LEFT, Direction.RIGHT, Empty), ArrowUpToDown(49, Direction.UP, Direction.DOWN, Empty), ArrowRightToLeft( | |
| 50, Direction.RIGHT, Direction.LEFT, Empty), ArrowDownToUp(51, Direction.DOWN, Direction.UP, Empty), ArrowUpToLeft(52, | |
| Direction.UP, Direction.LEFT, Empty), ArrowDownToLeft(53, Direction.DOWN, Direction.LEFT, Empty), ArrowLeftToUp(54, | |
| Direction.LEFT, Direction.UP, Empty), ArrowRightToUp(55, Direction.RIGHT, Direction.UP, Empty), ArrowUpToRight(56, | |
| Direction.UP, Direction.RIGHT, Empty), ArrowDownToRight(57, Direction.DOWN, Direction.RIGHT, Empty), ArrowLeftToDown(58, | |
| Direction.LEFT, Direction.DOWN, Empty), ArrowRightToDown(59, Direction.RIGHT, Direction.DOWN, Empty), | |
| // double arrows | |
| ArrowLeftToLeftUp(64, Direction.LEFT, Direction.LEFT_UP, Empty), ArrowUpToLeftUp(65, Direction.UP, Direction.LEFT_UP, Empty), ArrowRightToLeftUp( | |
| 66, Direction.RIGHT, Direction.LEFT_UP, Empty), ArrowDownToLeftUp(67, Direction.DOWN, Direction.LEFT_UP, Empty), ArrowLeftToLeftRight( | |
| 68, Direction.LEFT, Direction.LEFT_RIGHT, Empty), ArrowUpToLeftRight(69, Direction.UP, Direction.LEFT_RIGHT, Empty), ArrowRightToLeftRight( | |
| 70, Direction.RIGHT, Direction.LEFT_RIGHT, Empty), ArrowDownToLeftRight(71, Direction.DOWN, Direction.LEFT_RIGHT, Empty), ArrowLeftToLeftDown( | |
| 72, Direction.LEFT, Direction.LEFT_DOWN, Empty), ArrowUpToLeftDown(73, Direction.UP, Direction.LEFT_DOWN, Empty), ArrowRightToLeftDown( | |
| 74, Direction.RIGHT, Direction.LEFT_DOWN, Empty), ArrowDownToLeftDown(75, Direction.DOWN, Direction.LEFT_DOWN, Empty), ArrowLeftToUpRight( | |
| 80, Direction.LEFT, Direction.UP_RIGHT, Empty), ArrowUpToUpRight(81, Direction.UP, Direction.UP_RIGHT, Empty), ArrowRightToUpRight( | |
| 82, Direction.RIGHT, Direction.UP_RIGHT, Empty), ArrowDownToUpRight(83, Direction.DOWN, Direction.UP_RIGHT, Empty), ArrowLeftToUpDown( | |
| 84, Direction.LEFT, Direction.UP_DOWN, Empty), ArrowUpToUpDown(85, Direction.UP, Direction.UP_DOWN, Empty), ArrowRightToUpDown( | |
| 86, Direction.RIGHT, Direction.UP_DOWN, Empty), ArrowDownToUpDown(87, Direction.DOWN, Direction.UP_DOWN, Empty), ArrowLeftToRightDown( | |
| 92, Direction.LEFT, Direction.RIGHT_DOWN, Empty), ArrowUpToRightDown(93, Direction.UP, Direction.RIGHT_DOWN, Empty), ArrowRightToRightDown( | |
| 94, Direction.RIGHT, Direction.RIGHT_DOWN, Empty), ArrowDownToRightDown(95, Direction.DOWN, Direction.RIGHT_DOWN, Empty), | |
| // teleports | |
| TeleportAlpha(112), TeleportBeta(113), TeleportGamma(114), TeleportDelta(115), TeleportEpsilon(116), TeleportZeta(117), TeleportEta(118), TeleportTheta( | |
| 119), TeleportIota(120), TeleportKappa(121), TeleportLambda(122), TeleportMu(123), TeleportNu(124), TeleportXi(125), TeleportOmicron( | |
| 126), TeleportPi(127), | |
| // switches (off) | |
| // (their post-enter cells are defined strangely since there is a circular dependency | |
| // in switches that has to be resolved somehow) | |
| SwitchOffA(160, Direction.values(), CellRanges.SWITCH_ON_FIRST + 0, Direction.values()), SwitchOffB(161, Direction.values(), | |
| CellRanges.SWITCH_ON_FIRST + 1, Direction.values()), SwitchOffC(162, Direction.values(), CellRanges.SWITCH_ON_FIRST + 2, | |
| Direction.values()), SwitchOffD(163, Direction.values(), CellRanges.SWITCH_ON_FIRST + 3, Direction.values()), SwitchOffE(164, | |
| Direction.values(), CellRanges.SWITCH_ON_FIRST + 4, Direction.values()), SwitchOffF(165, Direction.values(), | |
| CellRanges.SWITCH_ON_FIRST + 5, Direction.values()), SwitchOffG(166, Direction.values(), CellRanges.SWITCH_ON_FIRST + 6, | |
| Direction.values()), SwitchOffH(167, Direction.values(), CellRanges.SWITCH_ON_FIRST + 7, Direction.values()), SwitchOffI(168, | |
| Direction.values(), CellRanges.SWITCH_ON_FIRST + 8, Direction.values()), SwitchOffJ(169, Direction.values(), | |
| CellRanges.SWITCH_ON_FIRST + 9, Direction.values()), SwitchOffK(170, Direction.values(), CellRanges.SWITCH_ON_FIRST + 10, | |
| Direction.values()), SwitchOffL(171, Direction.values(), CellRanges.SWITCH_ON_FIRST + 11, Direction.values()), SwitchOffM(172, | |
| Direction.values(), CellRanges.SWITCH_ON_FIRST + 12, Direction.values()), SwitchOffN(173, Direction.values(), | |
| CellRanges.SWITCH_ON_FIRST + 13, Direction.values()), SwitchOffO(174, Direction.values(), CellRanges.SWITCH_ON_FIRST + 14, | |
| Direction.values()), SwitchOffP(175, Direction.values(), CellRanges.SWITCH_ON_FIRST + 15, Direction.values()), | |
| // switches (on) | |
| SwitchOnA(176, Direction.values(), SwitchOffA, Direction.values()), SwitchOnB(177, Direction.values(), SwitchOffB, Direction.values()), SwitchOnC( | |
| 178, Direction.values(), SwitchOffC, Direction.values()), SwitchOnD(179, Direction.values(), SwitchOffD, Direction.values()), SwitchOnE( | |
| 180, Direction.values(), SwitchOffE, Direction.values()), SwitchOnF(181, Direction.values(), SwitchOffF, Direction.values()), SwitchOnG( | |
| 182, Direction.values(), SwitchOffG, Direction.values()), SwitchOnH(183, Direction.values(), SwitchOffH, Direction.values()), SwitchOnI( | |
| 184, Direction.values(), SwitchOffI, Direction.values()), SwitchOnJ(185, Direction.values(), SwitchOffJ, Direction.values()), SwitchOnK( | |
| 186, Direction.values(), SwitchOffK, Direction.values()), SwitchOnL(187, Direction.values(), SwitchOffL, Direction.values()), SwitchOnM( | |
| 188, Direction.values(), SwitchOffM, Direction.values()), SwitchOnN(189, Direction.values(), SwitchOffN, Direction.values()), SwitchOnO( | |
| 190, Direction.values(), SwitchOffO, Direction.values()), SwitchOnP(191, Direction.values(), SwitchOffP, Direction.values()), | |
| // door (closed) | |
| DoorClosedA(208, new Direction[0]), DoorClosedB(209, new Direction[0]), DoorClosedC(210, new Direction[0]), DoorClosedD(211, | |
| new Direction[0]), DoorClosedE(212, new Direction[0]), DoorClosedF(213, new Direction[0]), DoorClosedG(214, new Direction[0]), DoorClosedH( | |
| 215, new Direction[0]), DoorClosedI(216, new Direction[0]), DoorClosedJ(217, new Direction[0]), DoorClosedK(218, | |
| new Direction[0]), DoorClosedL(219, new Direction[0]), DoorClosedM(220, new Direction[0]), DoorClosedN(221, new Direction[0]), DoorClosedO( | |
| 222, new Direction[0]), DoorClosedP(223, new Direction[0]), | |
| // door (open) | |
| DoorOpenA(224), DoorOpenB(225), DoorOpenC(226), DoorOpenD(227), DoorOpenE(228), DoorOpenF(229), DoorOpenG(230), DoorOpenH(231), DoorOpenI( | |
| 232), DoorOpenJ(233), DoorOpenK(234), DoorOpenL(235), DoorOpenM(236), DoorOpenN(237), DoorOpenO(238), DoorOpenP(239), | |
| // general | |
| Solid(248), Start(254, new Direction[0], Direction.values()), Goal(255, Direction.values(), new Direction[0]) | |
| ; | |
| // fields | |
| private final int value; | |
| private Direction[] enterDirs, exitDirs; | |
| private Object postEnter, postExit; // either Cell or Integer | |
| // Constructors | |
| /** | |
| * Constructor. Simplest variant which allows passing via either direction and does not change the cell when doing | |
| * so. | |
| * @param value Numerical value of the cell | |
| */ | |
| Cell(int value) { | |
| this(value, (Cell) null); | |
| } | |
| /** | |
| * Constructor. A variant which allows passing via either direction and changes the cell after doing so. | |
| * @param value Numerical value of the cell | |
| * @param postExit Cell which this one transforms to after player leaves it | |
| */ | |
| Cell(int value, Cell postExit) { | |
| this(value, Direction.values(), postExit); | |
| } | |
| /** | |
| * Constructor. A variant which allows passing via specified direction and does not change the cell after doing so. | |
| * @param value Numerical value of the cell | |
| * @param transitDirs Directions the player can transit this cell via | |
| */ | |
| Cell(int value, Direction[] transitDirs) { | |
| this(value, transitDirs, transitDirs); | |
| } | |
| /** | |
| * Constructor. A variant which allows passing via specified direction and changes the cell after doing so. | |
| * @param value Numerical value of the cell | |
| * @param transitDirs Directions the player can transit this cell via | |
| * @param postExit Cell which this one transfroms to after player leaves it | |
| */ | |
| Cell(int value, Direction[] transitDirs, Cell postExit) { | |
| this(value, transitDirs, transitDirs, postExit); | |
| } | |
| /** | |
| * Constructor. A variant which allows entering from specified directions, exiting to specified directions but does | |
| * not change the cell after doing so. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param exitDirs Directions the player can exit this cell to | |
| */ | |
| Cell(int value, Direction[] enterDirs, Direction[] exitDirs) { | |
| this(value, enterDirs, exitDirs, null); | |
| } | |
| /** | |
| * Constructor. A variant which allows entering from specified directions, exiting to specified directions and | |
| * changes the cell after doing so. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param exitDirs Directions the player can exit this cell to | |
| * @param postExit Cell which this one transforms to after player leaves it | |
| */ | |
| Cell(int value, Direction[] enterDirs, Direction[] exitDirs, Cell postExit) { | |
| this(value, enterDirs, null, exitDirs, postExit); | |
| } | |
| /** | |
| * Constructor. A variant which allows entering from specified directions, exiting to specified directions and | |
| * changes the cell when player enters it. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param postEnter Cell which this one transforms to when player enters it | |
| * @param exitDirs Directions the player can exit this cell to | |
| */ | |
| Cell(int value, Direction[] enterDirs, Cell postEnter, Direction[] exitDirs) { | |
| this(value, enterDirs, postEnter, exitDirs, null); | |
| } | |
| /** | |
| * Constructor. A variant which allows entering from specified directions, exiting to specified directions and | |
| * changes the cell when player enters it. The post-enter cell is specified as numerical value; this is a special | |
| * case, required to resolve circular dependency in definition of switches. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param postEnter Value of cell which this one transforms to when player enters it | |
| * @param exitDirs Directions the player can exit this cell to | |
| */ | |
| Cell(int value, Direction[] enterDirs, int postEnter, Direction[] exitDirs) { | |
| this(value, enterDirs, postEnter, exitDirs, value); | |
| } | |
| /** | |
| * Constructor. Most complicated and powerful variant. Allows specifying directions of entering, exiting and cell | |
| * transformation on both events. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param postEnter Cell which this one transforms to when player enters it | |
| * @param exitDirs Directions the player can exit this cell to | |
| * @param postExit Cell which this one transforms to after player leaves it | |
| */ | |
| Cell(int value, Direction[] enterDirs, Cell postEnter, Direction[] exitDirs, Cell postExit) { | |
| this.value = value; | |
| this.enterDirs = enterDirs != null ? enterDirs : new Direction[0]; | |
| this.postEnter = postEnter != null ? postEnter : this; | |
| this.exitDirs = exitDirs != null ? exitDirs : new Direction[0]; | |
| this.postExit = postExit != null ? postExit : this; | |
| } | |
| /** | |
| * Constructor. Most complicated and powerful variant. Allows specifying directions of entering, exiting and cell | |
| * transformation on both events. | |
| * @param value Numerical value of the cell | |
| * @param enterDirs Directions the player can enter this cell from | |
| * @param postEnter Value of cell which this one transforms to when player enters it | |
| * @param exitDirs Directions the player can exit this cell to | |
| * @param postExit Value of cell which this one transforms to after player leaves it | |
| */ | |
| Cell(int value, Direction[] enterDirs, int postEnter, Direction[] exitDirs, int postExit) { | |
| this.value = value; | |
| this.enterDirs = enterDirs != null ? enterDirs : new Direction[0]; | |
| this.postEnter = Integer.valueOf(postEnter); | |
| this.exitDirs = exitDirs != null ? exitDirs : new Direction[0]; | |
| this.postExit = Integer.valueOf(postExit); | |
| } | |
| // Other creation methods | |
| /** | |
| * Retrieves the cell corresponding to given value. | |
| * @param value Value of cell | |
| * @return Cell corresponding to this value | |
| * @throws IllegalArgumentException If value is outside of allowed range | |
| */ | |
| public static Cell fromValue(int value) { | |
| if (!(value >= CellRanges.FIRST && value <= CellRanges.LAST)) | |
| throw new IllegalArgumentException("Cell value outside of allowed range"); | |
| // find the cell corresponding to given value | |
| // (using bisection!!one!!eleven) | |
| Cell[] vals = values(); | |
| int left = 0, right = vals.length - 1, mid, midVal; | |
| // special case for ends of search interval | |
| if (vals[left].getValue() == value) | |
| return vals[left]; | |
| if (vals[right].getValue() == value) | |
| return vals[right]; | |
| while (left < right) { | |
| mid = left + (right - left) / 2; | |
| midVal = vals[mid].getValue(); | |
| if (value < midVal) { | |
| right = mid; // choose left interval | |
| continue; | |
| } | |
| if (value > midVal) { | |
| left = mid; // choose right interval | |
| continue; | |
| } | |
| return vals[mid]; | |
| } | |
| return null; | |
| } | |
| /** | |
| * Retrieves number cell. | |
| * @param i Cell's number, starting from one | |
| * @return Cell of given number | |
| * @throws IndexOutOfBoundsException If number is outside of given range | |
| */ | |
| public static Cell number(int i) { | |
| if (!(i >= CellRanges.NUMBER_FIRST && i <= CellRanges.NUMBER_LAST)) | |
| throw new IndexOutOfBoundsException("Number outside of vaild range."); | |
| return fromValue(CellRanges.NUMBER_FIRST - 1 + i); | |
| } | |
| /** | |
| * Retrieves teleport cell. | |
| * @param i Teleport's index, starting from zero | |
| * @return Teleport cell of given index | |
| * @throws IndexOutOfBoundsException If index is outside of valid range | |
| */ | |
| public static Cell teleport(int i) { | |
| i += CellRanges.TELEPORT_FIRST; | |
| if (!(i >= CellRanges.TELEPORT_FIRST && i <= CellRanges.TELEPORT_LAST)) | |
| throw new IndexOutOfBoundsException("Teleport index outside of valid range"); | |
| return fromValue(i); | |
| } | |
| /** | |
| * Retrieves turned off switch cell. | |
| * @param i Switch's index, starting from zero | |
| * @return Switch-off cell of given index | |
| * @throws IndexOutOfBoundsException If index is outside of valid range | |
| */ | |
| public static Cell switchOff(int i) { | |
| i += CellRanges.SWITCH_OFF_FIRST; | |
| if (!(i >= CellRanges.SWITCH_OFF_FIRST && i <= CellRanges.SWITCH_OFF_LAST)) | |
| throw new IndexOutOfBoundsException("Switch index outside of valid range"); | |
| return fromValue(i); | |
| } | |
| /** | |
| * Retrieves turned on switch cell. | |
| * @param i Switch's index, starting from zero | |
| * @return Switch-on cell of given index | |
| * @throws IndexOutOfBoundsException If index is outside of valid ranges | |
| */ | |
| public static Cell switchOn(int i) { | |
| i += CellRanges.SWITCH_ON_FIRST; | |
| if (!(i >= CellRanges.SWITCH_ON_FIRST && i <= CellRanges.SWITCH_ON_LAST)) | |
| throw new IndexOutOfBoundsException("Switch index outside of valid range"); | |
| return fromValue(i); | |
| } | |
| /** | |
| * Retrieves closed door cell. | |
| * @param i Door's index, starting from zero | |
| * @return Closed door cell of given index | |
| * @throws IndexOutOfBoundsException If index is outside of valid range | |
| */ | |
| public static Cell doorClosed(int i) { | |
| i += CellRanges.DOOR_CLOSED_FIRST; | |
| if (!(i >= CellRanges.DOOR_CLOSED_FIRST && i <= CellRanges.DOOR_CLOSED_LAST)) | |
| throw new IndexOutOfBoundsException("Door index outside of valid range"); | |
| return fromValue(i); | |
| } | |
| /** | |
| * Retrieves open door cell. | |
| * @param i Door's index, starting from zero | |
| * @return Open door cell of given index | |
| * @throws IndexOutOfBoundsException If index is outside of valid range | |
| */ | |
| public static Cell doorOpen(int i) { | |
| i += CellRanges.DOOR_OPEN_FIRST; | |
| if (!(i >= CellRanges.DOOR_OPEN_FIRST && i <= CellRanges.DOOR_OPEN_LAST)) | |
| throw new IndexOutOfBoundsException("Door index outside of valid range"); | |
| return fromValue(i); | |
| } | |
| // Access methods | |
| /** | |
| * Retrieves the numerical value associated with this cell. | |
| * @return Numerical value of the cell | |
| */ | |
| public int getValue() { | |
| return value; | |
| } | |
| /** | |
| * Retrieves the directions which player can enter this cell from. | |
| * @return Cell's enter directions | |
| */ | |
| public Direction[] getEnterDirections() { | |
| return enterDirs; | |
| } | |
| /** | |
| * Retrieves the cell this one transforms to upon player entering it | |
| * @return Post-enter cell | |
| */ | |
| public Cell getPostEnterCell() { | |
| if (postEnter instanceof Integer) | |
| postEnter = Cell.fromValue(((Integer) postEnter).intValue()); | |
| return (Cell) postEnter; | |
| } | |
| /** | |
| * Retrieves the directions which player can exit this cell to | |
| * @return Cell's exit directions | |
| */ | |
| public Direction[] getExitDirections() { | |
| return exitDirs; | |
| } | |
| /** | |
| * Retrieves the cell this one transforms to upon player exiting it | |
| * @return Post-exit cell | |
| */ | |
| public Cell getPostExitCell() { | |
| if (postExit instanceof Integer) | |
| postExit = Cell.fromValue(((Integer) postExit).intValue()); | |
| return (Cell) postExit; | |
| } | |
| // Methods for checking cell type | |
| /** | |
| * Checks whether this cell is a number value. | |
| * @return Whether this is a number value | |
| */ | |
| public boolean isNumber() { | |
| return value >= CellRanges.NUMBER_FIRST && value <= CellRanges.NUMBER_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a classic arrow (up, down, left or right). | |
| * @return Whether this is a classic arrow | |
| */ | |
| public boolean isClassicArrow() { | |
| return value >= CellRanges.ARROW_CLASSIC_FIRST && value <= CellRanges.ARROW_CLASSIC_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a turn arrow (single arrow that forces direction change). | |
| * @return Whether this is a turn arrow | |
| */ | |
| public boolean isTurnArrow() { | |
| return value >= CellRanges.ARROW_TURN_FIRST && value <= CellRanges.ARROW_TURN_LAST; | |
| } | |
| /** | |
| * Check whether this cell is a single arrow, i.e. with one possible direction of entering and one possible | |
| * direction for leaving (but not necessarily the same one). | |
| * @return Whether this is a single arrow | |
| */ | |
| public boolean isSingleArrow() { | |
| return isClassicArrow() || isTurnArrow(); | |
| } | |
| /** | |
| * Checks whether this cell is a double (fork) arrow. | |
| * @return Whether this is a double arrow | |
| */ | |
| public boolean isDoubleArrow() { | |
| return (value >= CellRanges.ARROW_DOUBLE1_FIRST && value <= CellRanges.ARROW_DOUBLE1_LAST) | |
| || (value >= CellRanges.ARROW_DOUBLE2_FIRST && value <= CellRanges.ARROW_DOUBLE2_LAST) | |
| || (value >= CellRanges.ARROW_DOUBLE3_FIRST && value <= CellRanges.ARROW_DOUBLE3_LAST); | |
| } | |
| /** | |
| * Checks whether this cell is an arrow. | |
| * @return Whether this is an arrow | |
| */ | |
| public boolean isArrow() { | |
| return isSingleArrow() || isDoubleArrow(); | |
| } | |
| /** | |
| * Checks whether this cell is a teleport. | |
| * @return Whether this is a teleport | |
| */ | |
| public boolean isTeleport() { | |
| return value >= CellRanges.TELEPORT_FIRST && value <= CellRanges.TELEPORT_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a switch turned off. | |
| * @return Whether this is a switch turned off | |
| */ | |
| public boolean isSwitchOff() { | |
| return value >= CellRanges.SWITCH_OFF_FIRST && value <= CellRanges.SWITCH_OFF_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a switch turned on. | |
| * @return Whether this is a switch turned on | |
| */ | |
| public boolean isSwitchOn() { | |
| return value >= CellRanges.SWITCH_ON_FIRST && value <= CellRanges.SWITCH_ON_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a switch (regardless of its state). | |
| * @return Whether this is a switch | |
| */ | |
| public boolean isSwitch() { | |
| return value >= CellRanges.SWITCH_FIRST && value <= CellRanges.SWITCH_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a closed door. | |
| * @return Whether this is a closed door | |
| */ | |
| public boolean isDoorClosed() { | |
| return value >= CellRanges.DOOR_CLOSED_FIRST && value <= CellRanges.DOOR_CLOSED_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is an open door. | |
| * @return Whether this is is an open door | |
| */ | |
| public boolean isDoorOpen() { | |
| return value >= CellRanges.DOOR_OPEN_FIRST && value <= CellRanges.DOOR_OPEN_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a door (open or closed). | |
| * @return Whether this is a door | |
| */ | |
| public boolean isDoor() { | |
| return value >= CellRanges.DOOR_FIRST && value <= CellRanges.DOOR_LAST; | |
| } | |
| /** | |
| * Checks whether this cell is a destroyable one and must be got rid of in order for player to beat the level. | |
| * @return Whether this cell is destroyable | |
| */ | |
| public boolean isDestroyable() { | |
| return isNumber() || isArrow(); | |
| } | |
| // Extracting indices | |
| /** | |
| * Extracts index of teleport from the cell. | |
| * @return Teleport index, zero-based | |
| * @throws IllegalStateException If the cell is not a teleport | |
| */ | |
| public int getTeleportIndex() { | |
| if (!isTeleport()) | |
| throw new IllegalStateException("Cell is not a teleport"); | |
| return value - CellRanges.TELEPORT_FIRST; | |
| } | |
| /** | |
| * Extracts index of switch from the cell. | |
| * @return Switch index, zero-based | |
| * @throws IllegalStateException If the cell is not a switch | |
| */ | |
| public int getSwitchIndex() { | |
| if (isSwitchOn()) | |
| return value - CellRanges.SWITCH_ON_FIRST; | |
| if (isSwitchOff()) | |
| return value - CellRanges.SWITCH_OFF_FIRST; | |
| throw new IllegalArgumentException("Cell is not a switch"); | |
| } | |
| /** | |
| * Extracts index of door from the cell. | |
| * @return Door index, zero-based | |
| * @throws IllegalStateException If the cell is not a door | |
| */ | |
| public int getDoorIndex() { | |
| if (isDoorOpen()) | |
| return value - CellRanges.DOOR_OPEN_FIRST; | |
| if (isDoorClosed()) | |
| return value - CellRanges.DOOR_CLOSED_FIRST; | |
| throw new IllegalStateException("Cell is not a door"); | |
| } | |
| // Checking accessibility | |
| /** | |
| * Checks whether player is allowed to enter the cell when coming from given direction. | |
| * @param dir Direction where the player is coming from | |
| * @return Whether player can enter the cell | |
| */ | |
| public boolean canEnter(Direction dir) { | |
| Direction[] dirs = getEnterDirections(); | |
| if (dirs == null) | |
| return false; | |
| for (Direction d : dirs) | |
| if (d.equals(dir)) | |
| return true; | |
| return false; | |
| } | |
| /** | |
| * Checks whether player is allowed to exit the cell when going to given direction. | |
| * @param dir Direction where the player is going to | |
| * @return Whether player can exit the cell | |
| */ | |
| public boolean canExit(Direction dir) { | |
| Direction[] dirs = getExitDirections(); | |
| if (dirs == null) | |
| return false; | |
| for (Direction d : dirs) | |
| if (d.equals(dir)) | |
| return true; | |
| return false; | |
| } | |
| } |
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