+++ /dev/null
-/* atlantis --- Shows moving 3D sea animals */
-
-#if !defined( lint ) && !defined( SABER )
-static const char sccsid[] = "@(#)swim.c 1.3 98/06/18 xlockmore";
-
-#endif
-
-/* Copyright (c) E. Lassauge, 1998. */
-
-/*
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted,
- * provided that the above copyright notice appear in all copies and that
- * both that copyright notice and this permission notice appear in
- * supporting documentation.
- *
- * This file is provided AS IS with no warranties of any kind. The author
- * shall have no liability with respect to the infringement of copyrights,
- * trade secrets or any patents by this file or any part thereof. In no
- * event will the author be liable for any lost revenue or profits or
- * other special, indirect and consequential damages.
- *
- * The original code for this mode was written by Mark J. Kilgard
- * as a demo for openGL programming.
- *
- * Porting it to xlock was possible by comparing the original Mesa's morph3d
- * demo with it's ported version to xlock, so thanks for Marcelo F. Vianna
- * (look at morph3d.c) for his indirect help.
- *
- * Thanks goes also to Brian Paul for making it possible and inexpensive
- * to use OpenGL at home.
- *
- * My e-mail address is lassauge@sagem.fr
- *
- * Eric Lassauge (May-13-1998)
- *
- */
-
-/**
- * (c) Copyright 1993, 1994, Silicon Graphics, Inc.
- * ALL RIGHTS RESERVED
- * Permission to use, copy, modify, and distribute this software for
- * any purpose and without fee is hereby granted, provided that the above
- * copyright notice appear in all copies and that both the copyright notice
- * and this permission notice appear in supporting documentation, and that
- * the name of Silicon Graphics, Inc. not be used in advertising
- * or publicity pertaining to distribution of the software without specific,
- * written prior permission.
- *
- * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
- * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
- * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
- * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
- * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
- * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
- * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
- * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
- * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
- * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * US Government Users Restricted Rights
- * Use, duplication, or disclosure by the Government is subject to
- * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
- * (c)(1)(ii) of the Rights in Technical Data and Computer Software
- * clause at DFARS 252.227-7013 and/or in similar or successor
- * clauses in the FAR or the DOD or NASA FAR Supplement.
- * Unpublished-- rights reserved under the copyright laws of the
- * United States. Contractor/manufacturer is Silicon Graphics,
- * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
- *
- * OpenGL(TM) is a trademark of Silicon Graphics, Inc.
- */
-
-#ifdef STANDALONE
-# include <math.h>
-# include "xlockmoreI.h" /* from the xscreensaver distribution */
-#else /* !STANDALONE */
-# include "xlock.h" /* from the xlockmore distribution */
-#endif /* !STANDALONE */
-
-#ifdef USE_GL
-
-#include "atlantis.h"
-
-void
-FishTransform(fishRec * fish)
-{
-
- glTranslatef(fish->y, fish->z, -fish->x);
- glRotatef(-fish->psi, 0.0, 1.0, 0.0);
- glRotatef(fish->theta, 1.0, 0.0, 0.0);
- glRotatef(-fish->phi, 0.0, 0.0, 1.0);
-}
-
-void
-WhalePilot(fishRec * fish, float whalespeed, Bool whaledir)
-{
-
- fish->phi = -20.0;
- fish->theta = 0.0;
- fish->psi += ((whaledir) ? -0.5 : 0.5);
-
- fish->x += whalespeed * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
- fish->y += whalespeed * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
- fish->z += whalespeed * fish->v * sin(fish->theta / RAD);
-}
-
-void
-SharkPilot(fishRec * fish, float sharkspeed)
-{
- static int sign = 1;
- float X, Y, Z, tpsi, ttheta, thetal;
-
- fish->xt = 60000.0;
- fish->yt = 0.0;
- fish->zt = 0.0;
-
- X = fish->xt - fish->x;
- Y = fish->yt - fish->y;
- Z = fish->zt - fish->z;
-
- thetal = fish->theta;
-
- ttheta = RAD * atan(Z / (sqrt(X * X + Y * Y)));
-
- if (ttheta > fish->theta + 0.25) {
- fish->theta += 0.5;
- } else if (ttheta < fish->theta - 0.25) {
- fish->theta -= 0.5;
- }
- if (fish->theta > 90.0) {
- fish->theta = 90.0;
- }
- if (fish->theta < -90.0) {
- fish->theta = -90.0;
- }
- fish->dtheta = fish->theta - thetal;
-
- tpsi = RAD * atan2(Y, X);
-
- fish->attack = 0;
-
- if (fabs(tpsi - fish->psi) < 10.0) {
- fish->attack = 1;
- } else if (fabs(tpsi - fish->psi) < 45.0) {
- if (fish->psi > tpsi) {
- fish->psi -= 0.5;
- if (fish->psi < -180.0) {
- fish->psi += 360.0;
- }
- } else if (fish->psi < tpsi) {
- fish->psi += 0.5;
- if (fish->psi > 180.0) {
- fish->psi -= 360.0;
- }
- }
- } else {
- if (NRAND(100) > 98) {
- sign = 1 - sign;
- }
- fish->psi += sign;
- if (fish->psi > 180.0) {
- fish->psi -= 360.0;
- }
- if (fish->psi < -180.0) {
- fish->psi += 360.0;
- }
- }
-
- if (fish->attack) {
- if (fish->v < 1.1) {
- fish->spurt = 1;
- }
- if (fish->spurt) {
- fish->v += 0.2;
- }
- if (fish->v > 5.0) {
- fish->spurt = 0;
- }
- if ((fish->v > 1.0) && (!fish->spurt)) {
- fish->v -= 0.2;
- }
- } else {
- if (!(NRAND(400)) && (!fish->spurt)) {
- fish->spurt = 1;
- }
- if (fish->spurt) {
- fish->v += 0.05;
- }
- if (fish->v > 3.0) {
- fish->spurt = 0;
- }
- if ((fish->v > 1.0) && (!fish->spurt)) {
- fish->v -= 0.05;
- }
- }
-
- fish->x += sharkspeed * fish->v * cos(fish->psi / RAD) * cos(fish->theta / RAD);
- fish->y += sharkspeed * fish->v * sin(fish->psi / RAD) * cos(fish->theta / RAD);
- fish->z += sharkspeed * fish->v * sin(fish->theta / RAD);
-}
-
-void
-SharkMiss(atlantisstruct * ap, int i)
-{
- int j;
- float avoid, thetal;
- float X, Y, Z, R;
-
- for (j = 0; j < ap->num_sharks; j++) {
- if (j != i) {
- X = ap->sharks[j].x - ap->sharks[i].x;
- Y = ap->sharks[j].y - ap->sharks[i].y;
- Z = ap->sharks[j].z - ap->sharks[i].z;
-
- R = sqrt(X * X + Y * Y + Z * Z);
-
- avoid = 1.0;
- thetal = ap->sharks[i].theta;
-
- if (R < ap->sharksize) {
- if (Z > 0.0) {
- ap->sharks[i].theta -= avoid;
- } else {
- ap->sharks[i].theta += avoid;
- }
- }
- ap->sharks[i].dtheta += (ap->sharks[i].theta - thetal);
- }
- }
-}
-#endif
projects / xscreensaver / blobdiff