aboutsummaryrefslogtreecommitdiff
path: root/progs/demos/tunnel.c
diff options
context:
space:
mode:
Diffstat (limited to 'progs/demos/tunnel.c')
-rw-r--r--progs/demos/tunnel.c535
1 files changed, 535 insertions, 0 deletions
diff --git a/progs/demos/tunnel.c b/progs/demos/tunnel.c
new file mode 100644
index 000000000..6a240580e
--- /dev/null
+++ b/progs/demos/tunnel.c
@@ -0,0 +1,535 @@
+/*
+ * This program is under the GNU GPL.
+ * Use at your own risk.
+ *
+ * written by David Bucciarelli (tech.hmw@plus.it)
+ * Humanware s.r.l.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+
+#ifdef WIN32
+#include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include "readtex.h"
+#include "tunneldat.h"
+
+#ifdef XMESA
+#include "GL/xmesa.h"
+static int fullscreen = 1;
+#endif
+
+static int WIDTH = 640;
+static int HEIGHT = 480;
+
+static GLint T0 = 0;
+static GLint Frames = 0;
+static GLint NiceFog = 1;
+
+#define NUMBLOC 5
+
+#ifndef M_PI
+#define M_PI 3.1415926535
+#endif
+
+/*
+extern int striplength_skin_13[];
+extern float stripdata_skin_13[];
+
+extern int striplength_skin_12[];
+extern float stripdata_skin_12[];
+
+extern int striplength_skin_11[];
+extern float stripdata_skin_11[];
+
+extern int striplength_skin_9[];
+extern float stripdata_skin_9[];
+*/
+
+static int win = 0;
+
+static float obs[3] = { 1000.0, 0.0, 2.0 };
+static float dir[3];
+static float v = 30.;
+static float alpha = 90.0;
+static float beta = 90.0;
+
+static int fog = 1;
+static int bfcull = 1;
+static int usetex = 1;
+static int cstrip = 0;
+static int help = 1;
+static int joyavailable = 0;
+static int joyactive = 0;
+
+static GLuint t1id, t2id;
+
+static void
+inittextures(void)
+{
+ glGenTextures(1, &t1id);
+ glBindTexture(GL_TEXTURE_2D, t1id);
+
+ if (!LoadRGBMipmaps("../images/tile.rgb", GL_RGB)) {
+ fprintf(stderr, "Error reading a texture.\n");
+ exit(-1);
+ }
+
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+ GL_LINEAR_MIPMAP_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ glGenTextures(1, &t2id);
+ glBindTexture(GL_TEXTURE_2D, t2id);
+
+ if (!LoadRGBMipmaps("../images/bw.rgb", GL_RGB)) {
+ fprintf(stderr, "Error reading a texture.\n");
+ exit(-1);
+ }
+
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+ GL_LINEAR_MIPMAP_LINEAR);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+ glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
+}
+
+static void
+drawobjs(const int *l, const float *f)
+{
+ int mend, j;
+
+ if (cstrip) {
+ float r = 0.33, g = 0.33, b = 0.33;
+
+ for (; (*l) != 0;) {
+ mend = *l++;
+
+ r += 0.33;
+ if (r > 1.0) {
+ r = 0.33;
+ g += 0.33;
+ if (g > 1.0) {
+ g = 0.33;
+ b += 0.33;
+ if (b > 1.0)
+ b = 0.33;
+ }
+ }
+
+ glColor3f(r, g, b);
+ glBegin(GL_TRIANGLE_STRIP);
+ for (j = 0; j < mend; j++) {
+ f += 4;
+ glTexCoord2fv(f);
+ f += 2;
+ glVertex3fv(f);
+ f += 3;
+ }
+ glEnd();
+ }
+ }
+ else
+ for (; (*l) != 0;) {
+ mend = *l++;
+
+ glBegin(GL_TRIANGLE_STRIP);
+ for (j = 0; j < mend; j++) {
+ glColor4fv(f);
+ f += 4;
+ glTexCoord2fv(f);
+ f += 2;
+ glVertex3fv(f);
+ f += 3;
+ }
+ glEnd();
+ }
+}
+
+static void
+calcposobs(void)
+{
+ static double t0 = -1.;
+ double dt, t = glutGet(GLUT_ELAPSED_TIME) / 1000.0;
+ if (t0 < 0.0)
+ t0 = t;
+ dt = t - t0;
+ t0 = t;
+
+ dir[0] = sin(alpha * M_PI / 180.0);
+ dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0);
+ dir[2] = cos(beta * M_PI / 180.0);
+
+ if (dir[0] < 1.0e-5 && dir[0] > -1.0e-5)
+ dir[0] = 0;
+ if (dir[1] < 1.0e-5 && dir[1] > -1.0e-5)
+ dir[1] = 0;
+ if (dir[2] < 1.0e-5 && dir[2] > -1.0e-5)
+ dir[2] = 0;
+
+ obs[0] += v * dir[0] * dt;
+ obs[1] += v * dir[1] * dt;
+ obs[2] += v * dir[2] * dt;
+}
+
+static void
+special(int k, int x, int y)
+{
+ switch (k) {
+ case GLUT_KEY_LEFT:
+ alpha -= 2.0;
+ break;
+ case GLUT_KEY_RIGHT:
+ alpha += 2.0;
+ break;
+ case GLUT_KEY_DOWN:
+ beta -= 2.0;
+ break;
+ case GLUT_KEY_UP:
+ beta += 2.0;
+ break;
+ }
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+ switch (k) {
+ case 27:
+ exit(0);
+ break;
+
+ case 'a':
+ v += 5.;
+ break;
+ case 'z':
+ v -= 5.;
+ break;
+
+#ifdef XMESA
+ case ' ':
+ fullscreen = (!fullscreen);
+ XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW);
+ break;
+#endif
+ case 'j':
+ joyactive = (!joyactive);
+ break;
+ case 'h':
+ help = (!help);
+ break;
+ case 'f':
+ fog = (!fog);
+ break;
+ case 't':
+ usetex = (!usetex);
+ break;
+ case 'b':
+ if (bfcull) {
+ glDisable(GL_CULL_FACE);
+ bfcull = 0;
+ }
+ else {
+ glEnable(GL_CULL_FACE);
+ bfcull = 1;
+ }
+ break;
+ case 'm':
+ cstrip = (!cstrip);
+ break;
+
+ case 'd':
+ fprintf(stderr, "Deleting textures...\n");
+ glDeleteTextures(1, &t1id);
+ glDeleteTextures(1, &t2id);
+ fprintf(stderr, "Loading textures...\n");
+ inittextures();
+ fprintf(stderr, "Done.\n");
+ break;
+ case 'n':
+ NiceFog = !NiceFog;
+ printf("NiceFog %d\n", NiceFog);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+static void
+reshape(int w, int h)
+{
+ WIDTH = w;
+ HEIGHT = h;
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluPerspective(80.0, w / (float) h, 1.0, 50.0);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glViewport(0, 0, w, h);
+}
+
+static void
+printstring(void *font, char *string)
+{
+ int len, i;
+
+ len = (int) strlen(string);
+ for (i = 0; i < len; i++)
+ glutBitmapCharacter(font, string[i]);
+}
+
+static void
+printhelp(void)
+{
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ glColor4f(0.0, 0.0, 0.0, 0.5);
+ glRecti(40, 40, 600, 440);
+
+ glColor3f(1.0, 0.0, 0.0);
+ glRasterPos2i(300, 420);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Help");
+
+ glRasterPos2i(60, 390);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "h - Toggle Help");
+ glRasterPos2i(60, 360);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "t - Toggle Textures");
+ glRasterPos2i(60, 330);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "f - Toggle Fog");
+ glRasterPos2i(60, 300);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "m - Toggle strips");
+ glRasterPos2i(60, 270);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "b - Toggle Back face culling");
+ glRasterPos2i(60, 240);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "Arrow Keys - Rotate");
+ glRasterPos2i(60, 210);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "a - Increase velocity");
+ glRasterPos2i(60, 180);
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24, "z - Decrease velocity");
+
+ glRasterPos2i(60, 150);
+ if (joyavailable)
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+ "j - Toggle jostick control (Joystick control available)");
+ else
+ printstring(GLUT_BITMAP_TIMES_ROMAN_24,
+ "(No Joystick control available)");
+}
+
+static void
+dojoy(void)
+{
+#ifdef WIN32
+ static UINT max[2] = { 0, 0 };
+ static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2];
+ MMRESULT res;
+ JOYINFO joy;
+
+ res = joyGetPos(JOYSTICKID1, &joy);
+
+ if (res == JOYERR_NOERROR) {
+ joyavailable = 1;
+
+ if (max[0] < joy.wXpos)
+ max[0] = joy.wXpos;
+ if (min[0] > joy.wXpos)
+ min[0] = joy.wXpos;
+ center[0] = (max[0] + min[0]) / 2;
+
+ if (max[1] < joy.wYpos)
+ max[1] = joy.wYpos;
+ if (min[1] > joy.wYpos)
+ min[1] = joy.wYpos;
+ center[1] = (max[1] + min[1]) / 2;
+
+ if (joyactive) {
+ if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0]))
+ alpha -=
+ 2.0 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]);
+ if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1]))
+ beta += 2.0 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]);
+
+ if (joy.wButtons & JOY_BUTTON1)
+ v += 0.01;
+ if (joy.wButtons & JOY_BUTTON2)
+ v -= 0.01;
+ }
+ }
+ else
+ joyavailable = 0;
+#endif
+}
+
+static void
+draw(void)
+{
+ static char frbuf[80] = "";
+ int i;
+ float base, offset;
+
+ if (NiceFog)
+ glHint(GL_FOG_HINT, GL_NICEST);
+ else
+ glHint(GL_FOG_HINT, GL_DONT_CARE);
+
+ dojoy();
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ if (usetex)
+ glEnable(GL_TEXTURE_2D);
+ else
+ glDisable(GL_TEXTURE_2D);
+
+ if (fog)
+ glEnable(GL_FOG);
+ else
+ glDisable(GL_FOG);
+
+ glShadeModel(GL_SMOOTH);
+
+ glPushMatrix();
+ calcposobs();
+ gluLookAt(obs[0], obs[1], obs[2],
+ obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2],
+ 0.0, 0.0, 1.0);
+
+ if (dir[0] > 0) {
+ offset = 8.0;
+ base = obs[0] - fmod(obs[0], 8.0);
+ }
+ else {
+ offset = -8.0;
+ base = obs[0] + (8.0 - fmod(obs[0], 8.0));
+ }
+
+ glPushMatrix();
+ glTranslatef(base - offset / 2.0, 0.0, 0.0);
+ for (i = 0; i < NUMBLOC; i++) {
+ glTranslatef(offset, 0.0, 0.0);
+ glBindTexture(GL_TEXTURE_2D, t1id);
+ drawobjs(striplength_skin_11, stripdata_skin_11);
+ glBindTexture(GL_TEXTURE_2D, t2id);
+ drawobjs(striplength_skin_12, stripdata_skin_12);
+ drawobjs(striplength_skin_9, stripdata_skin_9);
+ drawobjs(striplength_skin_13, stripdata_skin_13);
+ }
+ glPopMatrix();
+ glPopMatrix();
+
+ glDisable(GL_TEXTURE_2D);
+ glDisable(GL_FOG);
+ glShadeModel(GL_FLAT);
+
+ glMatrixMode(GL_PROJECTION);
+ glPushMatrix();
+ glLoadIdentity();
+ glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+
+ glColor3f(1.0, 0.0, 0.0);
+ glRasterPos2i(10, 10);
+ printstring(GLUT_BITMAP_HELVETICA_18, frbuf);
+ glRasterPos2i(350, 470);
+ printstring(GLUT_BITMAP_HELVETICA_10,
+ "Tunnel V1.5 Written by David Bucciarelli (tech.hmw@plus.it)");
+
+ if (help)
+ printhelp();
+
+ glMatrixMode(GL_PROJECTION);
+ glPopMatrix();
+ glMatrixMode(GL_MODELVIEW);
+
+ glutSwapBuffers();
+
+ Frames++;
+ {
+ GLint t = glutGet(GLUT_ELAPSED_TIME);
+ if (t - T0 >= 2000) {
+ GLfloat seconds = (t - T0) / 1000.0;
+ GLfloat fps = Frames / seconds;
+ sprintf(frbuf, "Frame rate: %f", fps);
+ T0 = t;
+ Frames = 0;
+ }
+ }
+}
+
+static void
+idle(void)
+{
+ glutPostRedisplay();
+}
+
+
+
+int
+main(int ac, char **av)
+{
+ float fogcolor[4] = { 0.7, 0.7, 0.7, 1.0 };
+
+ fprintf(stderr,
+ "Tunnel V1.5\nWritten by David Bucciarelli (tech.hmw@plus.it)\n");
+
+ glutInitWindowPosition(0, 0);
+ glutInitWindowSize(WIDTH, HEIGHT);
+ glutInit(&ac, av);
+
+ glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
+
+ if (!(win = glutCreateWindow("Tunnel"))) {
+ fprintf(stderr, "Error, couldn't open window\n");
+ return -1;
+ }
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ gluPerspective(80.0, WIDTH / (float) HEIGHT, 1.0, 50.0);
+
+ glMatrixMode(GL_MODELVIEW);
+
+ glShadeModel(GL_SMOOTH);
+ glDisable(GL_DEPTH_TEST);
+ glEnable(GL_CULL_FACE);
+ glEnable(GL_TEXTURE_2D);
+
+ glEnable(GL_FOG);
+ glFogi(GL_FOG_MODE, GL_EXP2);
+ glFogfv(GL_FOG_COLOR, fogcolor);
+
+ glFogf(GL_FOG_DENSITY, 0.06);
+ glHint(GL_FOG_HINT, GL_NICEST);
+
+ inittextures();
+
+ glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ calcposobs();
+
+ glutReshapeFunc(reshape);
+ glutDisplayFunc(draw);
+ glutKeyboardFunc(key);
+ glutSpecialFunc(special);
+ glutIdleFunc(idle);
+
+ glEnable(GL_BLEND);
+ /*glBlendFunc(GL_SRC_ALPHA_SATURATE,GL_ONE); */
+ /*glEnable(GL_POLYGON_SMOOTH); */
+
+ glutMainLoop();
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:45:11 +0000