| 1 | /*
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| 2 | Copyright 2006 by Sean Luke
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| 3 | Licensed under the Academic Free License version 3.0
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| 4 | See the file "LICENSE" for more information
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| 5 | */
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| 6 |
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| 7 |
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| 8 | package ec.app.lawnmower.func;
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| 9 | import ec.*;
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| 10 | import ec.app.lawnmower.*;
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| 11 | import ec.gp.*;
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| 12 | import ec.util.*;
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| 13 |
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| 14 | /*
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| 15 | * Mow.java
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| 16 | *
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| 17 | * Created: Wed Nov 3 18:26:37 1999
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| 18 | * By: Sean Luke
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| 19 | */
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| 20 |
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| 21 | /**
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| 22 | * @author Sean Luke
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| 23 | * @version 1.0
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| 24 | */
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| 25 |
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| 26 | public class Mow extends GPNode
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| 27 | {
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| 28 | public String toString() { return "mow"; }
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| 29 |
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| 30 | public void checkConstraints(final EvolutionState state,
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| 31 | final int tree,
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| 32 | final GPIndividual typicalIndividual,
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| 33 | final Parameter individualBase)
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| 34 | {
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| 35 | super.checkConstraints(state,tree,typicalIndividual,individualBase);
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| 36 | if (children.length!=0)
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| 37 | state.output.error("Incorrect number of children for node " +
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| 38 | toStringForError() + " at " +
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| 39 | individualBase);
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| 40 | }
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| 41 |
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| 42 | public void eval(final EvolutionState state,
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| 43 | final int thread,
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| 44 | final GPData input,
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| 45 | final ADFStack stack,
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| 46 | final GPIndividual individual,
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| 47 | final Problem problem)
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| 48 | {
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| 49 | Lawnmower p = (Lawnmower)problem;
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| 50 | LawnmowerData d = (LawnmowerData)input;
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| 51 |
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| 52 | switch (p.orientation)
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| 53 | {
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| 54 | case Lawnmower.O_UP:
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| 55 | p.posy--;
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| 56 | if (p.posy<0) p.posy = p.maxy-1;
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| 57 | break;
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| 58 | case Lawnmower.O_LEFT:
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| 59 | p.posx--;
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| 60 | if (p.posx<0) p.posx = p.maxx-1;
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| 61 | break;
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| 62 | case Lawnmower.O_DOWN:
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| 63 | p.posy++;
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| 64 | if (p.posy>=p.maxy) p.posy=0;
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| 65 | break;
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| 66 | case Lawnmower.O_RIGHT:
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| 67 | p.posx++;
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| 68 | if (p.posx>=p.maxx) p.posx=0;
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| 69 | break;
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| 70 | default: // whoa!
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| 71 | state.output.fatal("Whoa, somehow I got a bad orientation! (" + p.orientation + ")");
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| 72 | break;
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| 73 | }
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| 74 |
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| 75 | p.moves++;
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| 76 | if (p.map[p.posx][p.posy]==Lawnmower.UNMOWED)
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| 77 | {
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| 78 | p.sum++;
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| 79 | p.map[p.posx][p.posy] = p.moves;
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| 80 | }
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| 81 |
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| 82 | // return [0,0]
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| 83 | d.x = 0;
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| 84 | d.y = 0;
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| 85 | }
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| 86 | }
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| 87 |
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| 88 |
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| 89 |
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