Mercurial > projects > openmelee
annotate ai/ai.d @ 26:88cca12cc8b9
added ship explode
| author | zzzzrrr <mason.green@gmail.com> |
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| date | Fri, 27 Mar 2009 19:26:01 -0400 |
| parents | 441eb7672404 |
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| rev | line source |
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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, |
| 12 | 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LED 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.ai; |
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32 |
| 24 | 33 import tango.util.container.LinkedList : LinkedList; |
| 12 | 34 import tango.io.Stdout : Stdout; |
| 24 | 35 import tango.math.Math : atan2, abs, PI, isNaN; |
| 12 | 36 |
| 14 | 37 import blaze.common.bzMath: bzVec2, bzClamp; |
| 19 | 38 import blaze.bzWorld : bzWorld; |
| 18 | 39 |
| 40 import openmelee.ai.steer : Steer; | |
| 41 import openmelee.ships.ship : Ship; | |
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42 |
| 24 | 43 alias LinkedList!(Ship) ObjectList; |
| 44 | |
| 45 struct Threat { | |
| 46 Ship target; | |
| 47 bzVec2 steering; | |
| 48 float distance = 0.0f; | |
| 49 float collisionTime = 0.0f; | |
| 50 float minSeparation = float.max; | |
| 51 bzVec2 relativePos; | |
| 52 bzVec2 relativeVel; | |
| 53 } | |
| 54 | |
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55 class AI { |
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56 |
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57 Steer steer; |
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58 Ship ship; |
| 14 | 59 float maxPredictionTime = 0.1f; |
| 19 | 60 bzVec2 st; |
| 61 | |
| 24 | 62 bool avoidRight; |
| 63 bool avoidLeft; | |
| 22 | 64 |
| 24 | 65 this(Ship ship, ObjectList objectList) { |
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66 this.ship = ship; |
| 24 | 67 steer = new Steer(ship, objectList); |
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68 } |
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69 |
| 26 | 70 // Elementary steering AI |
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71 void move(Ship enemy) { |
| 24 | 72 |
| 26 | 73 if(!ship) return; |
| 23 | 74 |
| 26 | 75 Threat threat; |
| 19 | 76 steer.update(); |
| 24 | 77 steer.collisionThreat(threat); |
| 78 st = threat.steering; | |
| 14 | 79 |
| 19 | 80 if(st == bzVec2.zeroVect) { |
| 24 | 81 if(avoidLeft || avoidRight) { |
| 82 avoidLeft = avoidRight = false; | |
| 83 ship.rBody.angularVelocity = 0.0f; | |
| 84 } | |
| 85 st = steer.targetEnemy(enemy.state, maxPredictionTime); | |
| 23 | 86 chase(enemy); |
| 24 | 87 return; |
| 19 | 88 } else { |
| 24 | 89 ship.state.turn = false; |
| 19 | 90 avoid(); |
| 24 | 91 return; |
| 19 | 92 } |
| 24 | 93 |
| 94 assert(0); | |
| 19 | 95 } |
| 96 | |
| 97 void chase(Ship enemy) { | |
| 98 | |
| 99 ship.state.target = st; | |
| 14 | 100 st = ship.rBody.localPoint(st); |
| 24 | 101 // Because ship's heading is 90 off rigid body's heading |
| 26 | 102 st = st.rotateLeft90(); |
| 12 | 103 float angle = atan2(st.x, st.y); |
| 24 | 104 |
| 14 | 105 if(abs(angle) > 0.05) { |
| 106 if(!ship.state.turn) { | |
| 107 if(st.x >= 0) { | |
| 108 ship.turnRight(); | |
| 109 ship.state.turn = true; | |
| 110 } else { | |
| 111 ship.state.turn = true; | |
| 112 ship.turnLeft(); | |
| 113 } | |
| 114 } | |
| 13 | 115 } else { |
| 116 ship.rBody.angularVelocity = 0.0f; | |
| 117 ship.state.turn = false; | |
| 118 } | |
| 119 | |
| 120 float range = (ship.state.position - enemy.state.position).length; | |
| 15 | 121 if(range > 2 && abs(angle) < PI/4) { |
| 14 | 122 ship.thrust(); |
| 13 | 123 } |
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124 } |
| 19 | 125 |
| 126 void avoid() { | |
| 127 | |
| 128 st = ship.rBody.localPoint(st); | |
| 24 | 129 // Because ship's heading is 90 off rigid body's heading |
| 26 | 130 st = st.rotateLeft90(); |
| 19 | 131 float angle = atan2(st.x, st.y); |
| 132 | |
| 24 | 133 if(st.x <= 0) { |
| 134 if(!avoidRight) { | |
| 22 | 135 ship.turnRight(); |
| 24 | 136 avoidRight = true; |
| 137 avoidLeft = false; | |
| 138 } | |
| 139 } else { | |
| 140 if(!avoidLeft) { | |
| 22 | 141 ship.turnLeft(); |
| 24 | 142 avoidLeft = true; |
| 143 avoidRight = false; | |
| 22 | 144 } |
| 19 | 145 } |
| 22 | 146 |
| 147 ship.thrust(); | |
| 19 | 148 } |
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149 |
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150 } |