Mercurial > sdl-ios-xcode

comparison Xcode/TemplatesForXcodeTiger/SDL OpenGL Application/atlantis/swim.c @ 3331:d44a0a913aa2

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Eric Wing to Sam Lots of fixes. Fixed missing power management building. Added template icons to the project templates. DocSet stuff Documentation fixes.. Fixed all the SDLtests. (Lots of tedious work.) It now depends on the static library target for convenience so I am not going to remove it from the SDL xcode project.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 01 Oct 2009 15:30:26 +0000
parents 232e5e00e398
children
comparison
equal deleted inserted replaced
3330:e15bcb04c9b4 3331:d44a0a913aa2
1 /**
2 * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
3 * ALL RIGHTS RESERVED
4 * Permission to use, copy, modify, and distribute this software for
5 * any purpose and without fee is hereby granted, provided that the above
6 * copyright notice appear in all copies and that both the copyright notice
7 * and this permission notice appear in supporting documentation, and that
8 * the name of Silicon Graphics, Inc. not be used in advertising
9 * or publicity pertaining to distribution of the software without specific,
10 * written prior permission.
11 *
12 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
13 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
14 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
15 * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
16 * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
17 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
18 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
19 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
20 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
21 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
23 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
24 *
25 * US Government Users Restricted Rights
26 * Use, duplication, or disclosure by the Government is subject to
27 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
28 * (c)(1)(ii) of the Rights in Technical Data and Computer Software
29 * clause at DFARS 252.227-7013 and/or in similar or successor
30 * clauses in the FAR or the DOD or NASA FAR Supplement.
31 * Unpublished-- rights reserved under the copyright laws of the
32 * United States. Contractor/manufacturer is Silicon Graphics,
33 * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
34 *
35 * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
36 */
37 #include <math.h>
38 #include <stdlib.h> /* For rand(). */
39 #include <GLUT/glut.h>
40 #include "atlantis.h"
41
42 void
43 FishTransform(fishRec * fish)
44 {
45
46 glTranslatef(fish->y, fish->z, -fish->x);
47 glRotatef(-fish->psi, 0.0, 1.0, 0.0);
48 glRotatef(fish->theta, 1.0, 0.0, 0.0);
49 glRotatef(-fish->phi, 0.0, 0.0, 1.0);
50 }
51
52 void
53 WhalePilot(fishRec * fish)
54 {
55
56 fish->phi = -20.0;
57 fish->theta = 0.0;
58 fish->psi -= 0.5;
59
60 fish->x += WHALESPEED * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
61 fish->y += WHALESPEED * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
62 fish->z += WHALESPEED * fish->v * sin(fish->theta / RAD);
63 }
64
65 void
66 SharkPilot(fishRec * fish)
67 {
68 static int sign = 1;
69 float X, Y, Z, tpsi, ttheta, thetal;
70
71 fish->xt = 60000.0;
72 fish->yt = 0.0;
73 fish->zt = 0.0;
74
75 X = fish->xt - fish->x;
76 Y = fish->yt - fish->y;
77 Z = fish->zt - fish->z;
78
79 thetal = fish->theta;
80
81 ttheta = RAD * atan(Z / (sqrt(X * X + Y * Y)));
82
83 if (ttheta > fish->theta + 0.25) {
84 fish->theta += 0.5;
85 } else if (ttheta < fish->theta - 0.25) {
86 fish->theta -= 0.5;
87 }
88 if (fish->theta > 90.0) {
89 fish->theta = 90.0;
90 }
91 if (fish->theta < -90.0) {
92 fish->theta = -90.0;
93 }
94 fish->dtheta = fish->theta - thetal;
95
96 tpsi = RAD * atan2(Y, X);
97
98 fish->attack = 0;
99
100 if (fabs(tpsi - fish->psi) < 10.0) {
101 fish->attack = 1;
102 } else if (fabs(tpsi - fish->psi) < 45.0) {
103 if (fish->psi > tpsi) {
104 fish->psi -= 0.5;
105 if (fish->psi < -180.0) {
106 fish->psi += 360.0;
107 }
108 } else if (fish->psi < tpsi) {
109 fish->psi += 0.5;
110 if (fish->psi > 180.0) {
111 fish->psi -= 360.0;
112 }
113 }
114 } else {
115 if (rand() % 100 > 98) {
116 sign = 1 - sign;
117 }
118 fish->psi += sign;
119 if (fish->psi > 180.0) {
120 fish->psi -= 360.0;
121 }
122 if (fish->psi < -180.0) {
123 fish->psi += 360.0;
124 }
125 }
126
127 if (fish->attack) {
128 if (fish->v < 1.1) {
129 fish->spurt = 1;
130 }
131 if (fish->spurt) {
132 fish->v += 0.2;
133 }
134 if (fish->v > 5.0) {
135 fish->spurt = 0;
136 }
137 if ((fish->v > 1.0) && (!fish->spurt)) {
138 fish->v -= 0.2;
139 }
140 } else {
141 if (!(rand() % 400) && (!fish->spurt)) {
142 fish->spurt = 1;
143 }
144 if (fish->spurt) {
145 fish->v += 0.05;
146 }
147 if (fish->v > 3.0) {
148 fish->spurt = 0;
149 }
150 if ((fish->v > 1.0) && (!fish->spurt)) {
151 fish->v -= 0.05;
152 }
153 }
154
155 fish->x += SHARKSPEED * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
156 fish->y += SHARKSPEED * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
157 fish->z += SHARKSPEED * fish->v * sin(fish->theta / RAD);
158 }
159
160 void
161 SharkMiss(int i)
162 {
163 int j;
164 float avoid, thetal;
165 float X, Y, Z, R;
166
167 for (j = 0; j < NUM_SHARKS; j++) {
168 if (j != i) {
169 X = sharks[j].x - sharks[i].x;
170 Y = sharks[j].y - sharks[i].y;
171 Z = sharks[j].z - sharks[i].z;
172
173 R = sqrt(X * X + Y * Y + Z * Z);
174
175 avoid = 1.0;
176 thetal = sharks[i].theta;
177
178 if (R < SHARKSIZE) {
179 if (Z > 0.0) {
180 sharks[i].theta -= avoid;
181 } else {
182 sharks[i].theta += avoid;
183 }
184 }
185 sharks[i].dtheta += (sharks[i].theta - thetal);
186 }
187 }
188 }