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comparison ai/ai.d @ 18:7f74e064dad5

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refactored code
author zzzzrrr <mason.green@gmail.com>
date Wed, 25 Mar 2009 11:28:25 -0400
parents ai.d@8e6a9e390cba
children 08ddf9e71b88
comparison
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17:82efafc87d54 18:7f74e064dad5
1 /*
2 * Copyright (c) 2009, Mason Green (zzzzrrr)
3 * http://www.dsource.org/projects/openmelee
4 *
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without modification,
8 * are permitted provided that the following conditions are met:
9 *
10 * * Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright notice,
13 * this list of conditions and the following disclaimer in the documentation
14 * and/or other materials provided with the distribution.
15 * * Neither the name of the polygonal nor the names of its contributors may be
16 * used to endorse or promote products derived from this software without specific
17 * prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31 module openmelee.ai.ai;
32
33 import tango.io.Stdout : Stdout;
34 import tango.math.Math : atan2, abs, PI;
35
36 import blaze.common.bzMath: bzVec2, bzClamp;
37
38 import openmelee.ai.steer : Steer;
39 import openmelee.ships.ship : Ship;
40
41 class AI {
42
43
44 Steer steer;
45 Ship ship;
46 float maxPredictionTime = 0.1f;
47
48 this(Ship ship) {
49 this.ship = ship;
50 steer = new Steer(ship);
51 }
52
53 void move(Ship enemy) {
54
55 // Elementary steering AI
56
57 steer.update();
58 bzVec2 st;
59 st = steer.steerForPursuit(enemy.state, maxPredictionTime);
60 ship.state.target = st;
61 st = ship.rBody.localPoint(st);
62 float x = st.x;
63 float y = st.y;
64 st = -bzVec2(y,-x);
65 float angle = atan2(st.x, st.y);
66
67 if(abs(angle) > 0.05) {
68 if(!ship.state.turn) {
69 if(st.x >= 0) {
70 ship.turnRight();
71 ship.state.turn = true;
72 } else {
73 ship.state.turn = true;
74 ship.turnLeft();
75 }
76 }
77 } else {
78 ship.rBody.angularVelocity = 0.0f;
79 ship.state.turn = false;
80 }
81
82 float range = (ship.state.position - enemy.state.position).length;
83 if(range > 2 && abs(angle) < PI/4) {
84 ship.thrust();
85 }
86 }
87
88 }