Mercurial > sdl-ios-xcode

annotate Xcode/TemplatesForProjectBuilder/SDL OpenGL Application/atlantis/swim.c @ 2787:93764fe8601a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
It turns out both the software and the OpenGL renderer had the same problem. According to the spec, when SDL_SRCALPHA is set, the colorkey is ignored, so we just need to convert the colorkey into the alpha channel.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 25 Nov 2008 05:29:14 +0000
parents 4d2d0548f5b2
children
rev   line source
2207
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /**
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
2 * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
3 * ALL RIGHTS RESERVED
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
4 * Permission to use, copy, modify, and distribute this software for
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
5 * any purpose and without fee is hereby granted, provided that the above
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
6 * copyright notice appear in all copies and that both the copyright notice
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
7 * and this permission notice appear in supporting documentation, and that
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
8 * the name of Silicon Graphics, Inc. not be used in advertising
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
9 * or publicity pertaining to distribution of the software without specific,
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
10 * written prior permission.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
11 *
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
12 * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
13 * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14 * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
15 * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
16 * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
17 * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
18 * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
19 * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
20 * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
21 * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
22 * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
23 * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
24 *
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
25 * US Government Users Restricted Rights
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
26 * Use, duplication, or disclosure by the Government is subject to
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
27 * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
28 * (c)(1)(ii) of the Rights in Technical Data and Computer Software
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
29 * clause at DFARS 252.227-7013 and/or in similar or successor
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
30 * clauses in the FAR or the DOD or NASA FAR Supplement.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
31 * Unpublished-- rights reserved under the copyright laws of the
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
32 * United States. Contractor/manufacturer is Silicon Graphics,
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
33 * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
34 *
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35 * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 */
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 #include <math.h>
2220
4d2d0548f5b2 Don't run indent on the Xcode templates
Sam Lantinga <slouken@libsdl.org>
parents: 2213
diff changeset
38 #include <stdlib.h> /* For rand(). */
2207
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39 #include <GLUT/glut.h>
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
40 #include "atlantis.h"
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
42 void
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
43 FishTransform(fishRec * fish)
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
44 {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
45
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
46 glTranslatef(fish->y, fish->z, -fish->x);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
47 glRotatef(-fish->psi, 0.0, 1.0, 0.0);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
48 glRotatef(fish->theta, 1.0, 0.0, 0.0);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49 glRotatef(-fish->phi, 0.0, 0.0, 1.0);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
50 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
51
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
52 void
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
53 WhalePilot(fishRec * fish)
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
54 {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
55
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
56 fish->phi = -20.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57 fish->theta = 0.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58 fish->psi -= 0.5;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59
2220
4d2d0548f5b2 Don't run indent on the Xcode templates
Sam Lantinga <slouken@libsdl.org>
parents: 2213
diff changeset
60 fish->x += WHALESPEED * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
4d2d0548f5b2 Don't run indent on the Xcode templates
Sam Lantinga <slouken@libsdl.org>
parents: 2213
diff changeset
61 fish->y += WHALESPEED * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
2207
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62 fish->z += WHALESPEED * fish->v * sin(fish->theta / RAD);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
64
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
65 void
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
66 SharkPilot(fishRec * fish)
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
67 {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
68 static int sign = 1;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
69 float X, Y, Z, tpsi, ttheta, thetal;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
70
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71 fish->xt = 60000.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
72 fish->yt = 0.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
73 fish->zt = 0.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
75 X = fish->xt - fish->x;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
76 Y = fish->yt - fish->y;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
77 Z = fish->zt - fish->z;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
78
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
79 thetal = fish->theta;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
80
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
81 ttheta = RAD * atan(Z / (sqrt(X * X + Y * Y)));
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
82
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
83 if (ttheta > fish->theta + 0.25) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
84 fish->theta += 0.5;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
85 } else if (ttheta < fish->theta - 0.25) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86 fish->theta -= 0.5;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
87 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
88 if (fish->theta > 90.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
89 fish->theta = 90.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
90 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
91 if (fish->theta < -90.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
92 fish->theta = -90.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
93 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
94 fish->dtheta = fish->theta - thetal;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
95
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
96 tpsi = RAD * atan2(Y, X);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
97
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
98 fish->attack = 0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
99
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
100 if (fabs(tpsi - fish->psi) < 10.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
101 fish->attack = 1;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
102 } else if (fabs(tpsi - fish->psi) < 45.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
103 if (fish->psi > tpsi) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
104 fish->psi -= 0.5;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
105 if (fish->psi < -180.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
106 fish->psi += 360.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
107 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
108 } else if (fish->psi < tpsi) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
109 fish->psi += 0.5;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
110 if (fish->psi > 180.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
111 fish->psi -= 360.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
112 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
113 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
114 } else {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
115 if (rand() % 100 > 98) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
116 sign = 1 - sign;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
117 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
118 fish->psi += sign;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
119 if (fish->psi > 180.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
120 fish->psi -= 360.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
121 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 if (fish->psi < -180.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
123 fish->psi += 360.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
124 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
125 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
126
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
127 if (fish->attack) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
128 if (fish->v < 1.1) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
129 fish->spurt = 1;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
130 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 if (fish->spurt) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
132 fish->v += 0.2;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
133 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 if (fish->v > 5.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135 fish->spurt = 0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 if ((fish->v > 1.0) && (!fish->spurt)) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 fish->v -= 0.2;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 } else {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 if (!(rand() % 400) && (!fish->spurt)) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 fish->spurt = 1;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 if (fish->spurt) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 fish->v += 0.05;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 if (fish->v > 3.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 fish->spurt = 0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 if ((fish->v > 1.0) && (!fish->spurt)) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
151 fish->v -= 0.05;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154
2220
4d2d0548f5b2 Don't run indent on the Xcode templates
Sam Lantinga <slouken@libsdl.org>
parents: 2213
diff changeset
155 fish->x += SHARKSPEED * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
4d2d0548f5b2 Don't run indent on the Xcode templates
Sam Lantinga <slouken@libsdl.org>
parents: 2213
diff changeset
156 fish->y += SHARKSPEED * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
2207
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157 fish->z += SHARKSPEED * fish->v * sin(fish->theta / RAD);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 void
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 SharkMiss(int i)
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 int j;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 float avoid, thetal;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 float X, Y, Z, R;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 for (j = 0; j < NUM_SHARKS; j++) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 if (j != i) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 X = sharks[j].x - sharks[i].x;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 Y = sharks[j].y - sharks[i].y;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 Z = sharks[j].z - sharks[i].z;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 R = sqrt(X * X + Y * Y + Z * Z);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 avoid = 1.0;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 thetal = sharks[i].theta;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 if (R < SHARKSIZE) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 if (Z > 0.0) {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 sharks[i].theta -= avoid;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 } else {
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 sharks[i].theta += avoid;
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 sharks[i].dtheta += (sharks[i].theta - thetal);
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 }
d63e9f5944ae Unpacked project archives to get individual file history in subversion
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188 }