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annotate ship.d @ 12:2ecd16840900

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added tracker
author Mason Green <mason.green@gmail.com>
date Sun, 22 Mar 2009 12:10:16 -0400
parents d998bf1b0654
children e1004697cae1
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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 */
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31 module openmelee.ship;
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32
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33 import tango.io.Stdout: Stdout;
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34
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35 import tango.util.container.LinkedList : LinkedList;
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36 import blaze.dynamics.bzBody : bzBody;
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37 import blaze.collision.shapes.bzShape : bzShape;
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38 import blaze.common.bzMath: bzVec2, bzCross, bzClamp;
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39 import blaze.bzWorld : bzWorld;
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40 import blaze.dynamics.forces.bzAttractor: bzAttractor;
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42 alias LinkedList!(bzShape) ShapeList;
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43
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44 struct State
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45 {
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46 bzVec2 position;
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47 bzVec2 velocity;
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48 bzVec2 up;
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49 bzVec2 side;
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50 bzVec2 forward;
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51 bzVec2 target;
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52 float speed = 0;
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53 float maxForce = 0;
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54
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55 bzVec2 predictFuturePosition(float dt) {
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56 return (position + velocity * dt);
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57 }
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58 }
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59
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60 abstract class Ship
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61 {
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62 bzWorld world;
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63 bzBody rBody;
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64 ShapeList shapes;
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65 bzVec2 engineForce;
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66 bzVec2 turnForce;
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67 bzVec2 leftTurnPoint;
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68 bzVec2 rightTurnPoint;
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69 State state;
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70
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71 float maxLinVel = 100;
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72 float maxAngVel = 2;
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73
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74 this(bzWorld world) {
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75
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76 this.world = world;
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77 shapes = new ShapeList;
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78 }
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80 void thrust() {
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81
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82 rBody.force += engineForce.rotate(rBody.angle);
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83 }
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84
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85 void turnLeft() {
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86
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87 rBody.torque += bzCross(leftTurnPoint.rotate(rBody.angle),
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88 turnForce.rotate(rBody.angle));
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89 }
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90
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91 void turnRight() {
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92
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93 rBody.torque += bzCross(rightTurnPoint.rotate(rBody.angle),
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94 turnForce.rotate(rBody.angle));
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95 }
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96
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97 void setGravity() {
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98 float minRadius = 0.1;
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99 float maxRadius = 10;
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100 float strength = 3.5;
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101 bzVec2 center = bzVec2(0,0);
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102 auto attractor = new bzAttractor(rBody, center, strength, minRadius, maxRadius);
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103 world.addForce(attractor);
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104 }
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105
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106 void limitVelocity() {
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107 float vx = rBody.linearVelocity.x;
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108 float vy = rBody.linearVelocity.y;
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109 float av = rBody.angularVelocity;
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110 rBody.linearVelocity.x = bzClamp(vx, -maxLinVel, maxLinVel);
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111 rBody.linearVelocity.y = bzClamp(vy, -maxLinVel, maxLinVel);
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112 rBody.angularVelocity = bzClamp(av, -maxAngVel, maxAngVel);
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113 }
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114
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115 void updateState() {
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116 state.velocity = rBody.linearVelocity;
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117 state.speed = state.velocity.length;
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118 state.position = rBody.position;
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119 bzVec2 heading = engineForce.rotate(rBody.angle);
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120 heading.normalize();
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121 state.forward = heading;
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122 }
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123
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124 }