Mercurial > projects > openmelee
annotate ai/utilities.d @ 18:7f74e064dad5
refactored code
author | zzzzrrr <mason.green@gmail.com> |
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date | Wed, 25 Mar 2009 11:28:25 -0400 |
parents | utilities.d@d998bf1b0654 |
children | 08ddf9e71b88 |
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1 /* |
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2 * Copyright (c) 2009, Mason Green (zzzzrrr) |
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3 * http://www.dsource.org/projects/openmelee |
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4 * |
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5 * All rights reserved. |
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6 * |
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7 * Redistribution and use in source and binary forms, with or without modification, |
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8 * are permitted provided that the following conditions are met: |
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9 * |
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10 * * Redistributions of source code must retain the above copyright notice, |
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11 * this list of conditions and the following disclaimer. |
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12 * * Redistributions in binary form must reproduce the above copyright notice, |
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13 * this list of conditions and the following disclaimer in the documentation |
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14 * and/or other materials provided with the distribution. |
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15 * * Neither the name of the polygonal nor the names of its contributors may be |
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16 * used to endorse or promote products derived from this software without specific |
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17 * prior written permission. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
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23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 */ |
18 | 31 module openmelee.ai.utilities; |
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32 |
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33 import tango.math.random.Kiss : Kiss; |
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34 |
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35 float scalarRandomWalk(float initial, float walkspeed, float min, float max) { |
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36 |
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37 float next = initial + (((randomRange(0, 1) * 2) - 1) * walkspeed); |
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38 if (next < min) return min; |
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39 if (next > max) return max; |
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40 return next; |
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41 } |
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42 |
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43 // ---------------------------------------------------------------------------- |
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44 // classify a value relative to the interval between two bounds: |
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45 // returns -1 when below the lower bound |
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46 // returns 0 when between the bounds (inside the interval) |
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47 // returns +1 when above the upper bound |
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48 int intervalComparison(float x, float lowerBound, float upperBound) |
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49 { |
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50 if (x < lowerBound) return -1; |
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51 if (x > upperBound) return +1; |
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52 return 0; |
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53 } |
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54 |
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55 T randomRange(T = int) (T min, T max) |
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56 { |
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57 return min + Kiss.instance.natural() % (max + 1 - min); |
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58 } |