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87 lines
1.5 KiB
87 lines
1.5 KiB
package mightypork.rogue.world;
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import java.io.IOException;
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import mightypork.util.files.ion.IonBinary;
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import mightypork.util.files.ion.IonInput;
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import mightypork.util.files.ion.IonOutput;
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/**
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* Path step.<br>
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* Must be binary in order to be saveable in lists.
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*
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* @author MightyPork
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*/
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public class PathStep implements IonBinary {
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public static final PathStep NORTH = new PathStep(0, -1);
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public static final PathStep SOUTH = new PathStep(0, 1);
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public static final PathStep EAST = new PathStep(1, 0);
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public static final PathStep WEST = new PathStep(-1, 0);
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public static final PathStep NONE = new PathStep(0, 0);
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public static PathStep make(int x, int y)
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{
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x = x < 0 ? -1 : x > 0 ? 1 : 0;
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y = y < 0 ? -1 : y > 0 ? 1 : 0;
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if (y == -1) return NORTH;
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if (y == 1) return SOUTH;
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if (x == -1) return WEST;
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if (x == 1) return EAST;
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return NONE;
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}
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public static final int ION_MARK = 0;
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public int x;
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public int y;
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public PathStep(int x, int y)
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{
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this.x = x < 0 ? -1 : x > 0 ? 1 : 0;
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this.y = y < 0 ? -1 : y > 0 ? 1 : 0;
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}
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@Override
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public void load(IonInput in) throws IOException
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{
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x = in.readByte();
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y = in.readByte();
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}
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@Override
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public void save(IonOutput out) throws IOException
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{
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out.writeByte(x);
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out.writeByte(y);
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}
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public Coord toCoord()
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{
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return Coord.make(x, y);
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}
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@Override
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public short getIonMark()
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{
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return ION_MARK;
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}
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@Override
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public String toString()
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{
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return "(" + x + ";" + y + ")";
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}
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}
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