dos33fsprogs/mode7/pink.c

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2018-01-28 04:30:17 +00:00
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <unistd.h>
#include <SDL/SDL.h>
#include <GL/gl.h>
#include <GL/glu.h>
#define TFV_PINK_TEXTURE 62
#define TOTAL_TEXTURES 63
/* As much as I have memorized... */
#define PI 3.141592653589793238462643383279502884197169399
#define D2R(x) ((x*PI*2.0)/360.0)
static GLuint textures[TOTAL_TEXTURES];
#define UP_PRESSED 1
#define DOWN_PRESSED 2
#define LEFT_PRESSED 4
#define RIGHT_PRESSED 8
#define ACTION1_PRESSED 16
#define ACTION2_PRESSED 32
#define CONFIRM_PRESSED 64
#define CANCEL_PRESSED 128
#define PAN_LEFT_PRESSED 256
#define PAN_RIGHT_PRESSED 512
#define PAUSE_PRESSED 1024
#define MENU_PRESSED 2048
/* MODEL -> We pretend we essentially have essentially 10 buttons */
/* Right now this reflects the Gravis-Gamepad I have. Eventually */
/* I will add some sort of generic config utility for custom controls */
/* UP, DOWN, LEFT, RIGHT */
/* 1 (A or ACTION1)
* 2 (Z or ACTION2)
* 3 (ENTER or CONFIRM)
* 4 (SPACE or CANCEL)
* 5 (J or PAN_LEFT)
* 6 (K or PAN_RIGHT)
* 9 (P or PAUSE)
*10 (ESCAPE or MENU)
*/
int check_keyboard(char *alphanum,int reset) {
SDL_Event event;
static int keys_down=0;
int momentary=0;
int button,axis,jdirection;
int keypressed;
*alphanum=0;
if (reset) {
keys_down=0;
return 1;
}
while ( SDL_PollEvent(&event) ) {
if ( event.type == SDL_QUIT ) {
keys_down|=MENU_PRESSED;
return 1;
}
if (event.type == SDL_VIDEORESIZE) {
printf("RESIZE\b");
}
if (event.type == SDL_JOYBUTTONDOWN) {
button=event.jbutton.button;
switch(button) {
case 0: momentary|=ACTION1_PRESSED;
keys_down|=ACTION1_PRESSED;
break;
case 1: momentary|=ACTION2_PRESSED;
keys_down|=ACTION2_PRESSED;
break;
case 2: momentary|=CONFIRM_PRESSED;
keys_down|=CONFIRM_PRESSED;
break;
case 3: momentary|=CANCEL_PRESSED;
keys_down|=CANCEL_PRESSED;
break;
case 4: momentary|=PAN_LEFT_PRESSED;
keys_down|=PAN_LEFT_PRESSED;
break;
case 5: momentary|=PAN_RIGHT_PRESSED;
keys_down|=PAN_RIGHT_PRESSED;
break;
case 8: momentary|=PAUSE_PRESSED;
keys_down|=PAUSE_PRESSED;
break;
case 9: momentary|=MENU_PRESSED;
keys_down|=MENU_PRESSED;
break;
}
//printf("Button: %i\n",button);
}
if (event.type == SDL_JOYAXISMOTION) {
axis=event.jaxis.axis;
jdirection=event.jaxis.value;
if (axis==0) { /* X */
if (jdirection>20000) {
keys_down|=RIGHT_PRESSED;
}
else if (jdirection<-20000) {
keys_down|=LEFT_PRESSED;
}
else if ((jdirection>5000) || (jdirection<-5000)) {
keys_down&=(~RIGHT_PRESSED);
keys_down&=(~LEFT_PRESSED);
// printf("X: %i\n",jdirection);
}
}
if (axis==1) { /* Y */
if (jdirection>20000) {
keys_down|=DOWN_PRESSED;
}
else if (jdirection<-20000) {
keys_down|=UP_PRESSED;
}
else if ((jdirection>5000) || (jdirection<-5000)) {
keys_down&=(~UP_PRESSED);
keys_down&=(~DOWN_PRESSED);
// printf("Y: %i\n",jdirection);
}
// printf("Y: %i\n",jdirection);
}
}
if (event.type == SDL_JOYBUTTONUP) {
button=event.jbutton.button;
switch(button) {
case 0: keys_down&=(~ACTION1_PRESSED);
break;
case 1: keys_down&=(~ACTION2_PRESSED);
break;
case 2: keys_down&=(~CONFIRM_PRESSED);
break;
case 3: keys_down&=(~CANCEL_PRESSED);
break;
case 4: keys_down&=(~PAN_LEFT_PRESSED);
break;
case 5: keys_down&=(~PAN_RIGHT_PRESSED);
break;
case 8: keys_down&=(~PAUSE_PRESSED);
break;
case 9: keys_down&=(~MENU_PRESSED);
break;
}
//printf("Button: %i\n",button);
}
if (event.type == SDL_KEYUP) {
keypressed=event.key.keysym.sym;
switch(keypressed) {
case SDLK_UP: keys_down&=(~UP_PRESSED);
break;
case SDLK_DOWN: keys_down&=(~DOWN_PRESSED);
break;
case SDLK_RIGHT: keys_down&=(~RIGHT_PRESSED);
break;
case SDLK_LEFT: keys_down&=(~LEFT_PRESSED);
break;
case SDLK_ESCAPE: keys_down&=(~MENU_PRESSED);
break;
case SDLK_RETURN: keys_down&=(~CONFIRM_PRESSED);
break;
case SDLK_SPACE: keys_down&=(~CANCEL_PRESSED);
break;
case 'a': case 'A': keys_down&=(~ACTION1_PRESSED); break;
case 'z': case 'Z': keys_down&=(~ACTION2_PRESSED); break;
case 'j': case 'J': keys_down&=(~PAN_LEFT_PRESSED); break;
case 'k': case 'K': keys_down&=(~PAN_RIGHT_PRESSED); break;
case 'p': case 'P': keys_down&=(~PAUSE_PRESSED); break;
}
}
if ( event.type == SDL_KEYDOWN ) {
keypressed=event.key.keysym.sym;
switch (keypressed) {
case 'a': case 'A':
momentary|=ACTION1_PRESSED;
keys_down|=ACTION1_PRESSED;
break;
case 'z': case 'Z':
momentary|=ACTION2_PRESSED;
keys_down|=ACTION2_PRESSED;
break;
case SDLK_RETURN: momentary|=CONFIRM_PRESSED;
keys_down|=CONFIRM_PRESSED;
break;
case SDLK_SPACE: momentary|=CANCEL_PRESSED;
keys_down|=CANCEL_PRESSED;
break;
case 'j': case 'J':
momentary|=PAN_LEFT_PRESSED;
keys_down|=PAN_LEFT_PRESSED;
break;
case 'k': case 'K':
momentary|=PAN_RIGHT_PRESSED;
keys_down|=PAN_RIGHT_PRESSED;
break;
case 'p': case 'P':
momentary|=PAUSE_PRESSED;
keys_down|=PAUSE_PRESSED;
break;
case SDLK_ESCAPE: momentary|=MENU_PRESSED;
keys_down|=MENU_PRESSED;
break;
case SDLK_RIGHT: momentary|=RIGHT_PRESSED;
keys_down|=RIGHT_PRESSED;
break;
case SDLK_LEFT: momentary|=LEFT_PRESSED;
keys_down|=LEFT_PRESSED;
break;
case SDLK_UP:
momentary|=UP_PRESSED;
keys_down|=UP_PRESSED;
break;
case SDLK_DOWN: momentary|=DOWN_PRESSED;
keys_down|=DOWN_PRESSED;
break;
default: *alphanum=keypressed; break;
}
}
}
return (momentary<<16)+keys_down;
}
static void LoadPinkTexture(int x,int y,int which_one,int transparent,
int repeat_type) {
static GLubyte *texture;
int i;
texture=calloc(64*64*4,sizeof(GLubyte));
for(i=0;i<64*64;i++) {
texture[(i*4)+0]=0xff;
texture[(i*4)+1]=0x44;
texture[(i*4)+2]=0xfd;
texture[(i*4)+3]=0xff;
}
glBindTexture(GL_TEXTURE_2D,textures[which_one]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, repeat_type);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, repeat_type);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, x, y,
0,GL_RGBA,GL_UNSIGNED_BYTE,texture);
}
static void reshape(int w,int h) {
glViewport(0,0,(GLsizei)w,(GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0,(GLfloat)w/(GLfloat)h,1.0,100.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
//glTranslatef(0.0,0.0,-3.6);
}
static int generate_sphere(float radius, int latitudes, int longitudes, int texture) {
/* The way I do this is brutally inefficient */
/* I should optimize it later [ie, do everything in radians] */
float delta_theta,delta_phi;
float init_x1,init_y1,init_z1,x1,y1,z1;
float init_x2,init_y2,init_z2,x2,y2,z2;
int phi_prime,theta_prime;
glBindTexture(GL_TEXTURE_2D,textures[texture]);
delta_phi=180.0/(float)latitudes;
delta_theta=360.0/(float)longitudes;
for(phi_prime=0;phi_prime<latitudes;phi_prime++) {
theta_prime=0;
glBegin(GL_QUAD_STRIP);
init_x1=radius*sin(D2R(phi_prime*delta_phi))*cos(D2R(theta_prime*delta_theta));
init_y1=radius*sin(D2R(phi_prime*delta_phi))*sin(D2R(theta_prime*delta_theta));
init_z1=radius*cos(D2R(phi_prime*delta_phi));
glNormal3f(init_x1/radius,init_y1/radius,init_z1/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, (phi_prime*delta_phi)/360.0);
glVertex3f(init_x1,init_y1,init_z1);
init_x2=radius*sin(D2R((phi_prime+1)*delta_phi))*cos(D2R(theta_prime*delta_theta));
init_y2=radius*sin(D2R((phi_prime+1)*delta_phi))*sin(D2R(theta_prime*delta_theta));
init_z2=radius*cos(D2R((phi_prime+1)*delta_phi));
// printf("%.2f %.2f %.2f : %.2f %.2f %.2f\n",radius,phi_prime*delta_phi,theta_prime*delta_theta,normalx,normaly,normalz);
glNormal3f(init_x2/radius,init_y2/radius,init_z2/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, ((phi_prime+1)*delta_phi)/360.0);
glVertex3f(init_x2,init_y2,init_z2);
for(theta_prime=1;theta_prime<longitudes;theta_prime++) {
x1=radius*sin(D2R(phi_prime*delta_phi))*cos(D2R(theta_prime*delta_theta));
y1=radius*sin(D2R(phi_prime*delta_phi))*sin(D2R(theta_prime*delta_theta));
z1=radius*cos(D2R(phi_prime*delta_phi));
glNormal3f(x1/radius,y1/radius,z1/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, (phi_prime*delta_phi)/360.0);
glVertex3f(x1,y1,z1);
x2=radius*sin(D2R((phi_prime+1)*delta_phi))*cos(D2R(theta_prime*delta_theta));
y2=radius*sin(D2R((phi_prime+1)*delta_phi))*sin(D2R(theta_prime*delta_theta));
z2=radius*cos(D2R((phi_prime+1)*delta_phi));
glNormal3f(x2/radius,y2/radius,z2/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, ((phi_prime+1)*delta_phi)/360.0);
glVertex3f(x2,y2,z2);
}
glNormal3f(init_x1/radius,init_y1/radius,init_z1/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, (phi_prime*delta_phi)/360.0);
glVertex3f(init_x1,init_y1,init_z1);
glNormal3f(init_x1/radius,init_y1/radius,init_z1/radius);
glTexCoord2f( (theta_prime*delta_theta)/360.0, (phi_prime*delta_phi)/360.0);
glVertex3f(init_x2,init_y2,init_z2);
glEnd();
}
return 0;
}
static int draw_pink_sphere(int xsize, int ysize) {
char key_alpha;
int keyspressed;
double camerax=0,cameray=10,cameraz=20,camera_direction=0;
int rotation=0;
GLfloat light_position[]={50.0,50.0,100.0,0.0};
GLfloat lmodel_ambient[]={0.8,0.8,0.8,1.0};
GLfloat white_light[]={1.0,1.0,1.0,1.0};
printf("ENTERING DRAW PINK SPHERE\n"); fflush(stdout);
/* Init screen and keyboard */
reshape(xsize,ysize);
check_keyboard(&key_alpha,1);
printf("ABOUT TO ENTER MAIN LOOP\n"); fflush(stdout);
while (1) {
/* Check for input events */
keyspressed=check_keyboard(&key_alpha,0);
if (keyspressed&MENU_PRESSED) {
return 0;
}
if (keyspressed&PAN_LEFT_PRESSED) {
camera_direction-=(2.0*PI)/16.0;
if (camera_direction<0.0) camera_direction+=2.0*PI;
camerax=10.0*sin(camera_direction);
cameray=10.0*cos(camera_direction);
rotation--;
if (rotation<0) rotation+=16;
printf("ROT=%d %.2lf\n",rotation,camera_direction);
}
if (keyspressed&PAN_RIGHT_PRESSED) {
camera_direction+=(2.0*PI)/16.0;
if (camera_direction>2.0*PI) camera_direction-=2.0*PI;
camerax=10.0*sin(camera_direction);
cameray=10.0*cos(camera_direction);
rotation++;
if (rotation>15) rotation-=16;
printf("ROT=%d %.2lf\n",rotation,camera_direction);
}
if (keyspressed&UP_PRESSED) {
cameraz+=0.5;
}
if (keyspressed&DOWN_PRESSED) {
cameraz-=0.5;
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
gluLookAt(camerax,cameray,cameraz,
0.0,0.0,0.0,
0.0,0.0,1.0);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
glLightfv(GL_LIGHT0, GL_DIFFUSE, white_light);
glLightfv(GL_LIGHT0, GL_SPECULAR,white_light);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
{
GLfloat default_a[]={0.6,0.6,0.6,1.0};
GLfloat default_d[]={0.8,0.8,0.8,1.0};
GLfloat default_s[]={0.0,0.0,0.0,1.0};
GLfloat default_e[]={0.0,0.0,0.0,1.0};
glMaterialfv(GL_FRONT,GL_AMBIENT,default_a);
glMaterialfv(GL_FRONT,GL_DIFFUSE,default_d);
glMaterialfv(GL_FRONT,GL_SPECULAR,default_s);
glMaterialfv(GL_FRONT,GL_EMISSION,default_e);
}
glBegin(GL_QUADS);
glVertex3f(-5,-5,0);
glVertex3f(5,-5,0);
glVertex3f(5,5,0);
glVertex3f(-5,5,0);
glVertex3f(-5,5,0);
glVertex3f(5,5,0);
glVertex3f(5,5,5);
glVertex3f(-5,5,5);
glVertex3f(-5,-5,0);
glVertex3f(-5,5,0);
glVertex3f(-5,5,5);
glVertex3f(-5,-5,5);
glEnd();
glEnable(GL_TEXTURE_2D);
glPushMatrix();
glTranslatef(0,0,6.5);
glRotatef(90,0,1,0);
glPushMatrix();
glRotatef(270,0,0,1);
generate_sphere(2,20,20,TFV_PINK_TEXTURE);
glPopMatrix();
glPopMatrix();
/* Flush it out to the device */
glFlush();
SDL_GL_SwapBuffers();
glDisable(GL_LIGHTING);
glDisable(GL_TEXTURE_2D);
/* Emulate low frame-rates */
usleep(100000);
}
return 1;
}
static void LoadTextures(void) {
#define _BSD_SOURCE 1
#if (BYTE_ORDER==BIG_ENDIAN)
printf("We are big_endian\n");
glPixelStorei(GL_UNPACK_SWAP_BYTES,1);
#endif
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glGenTextures(TOTAL_TEXTURES,textures);
LoadPinkTexture(64,64,TFV_PINK_TEXTURE,0,GL_REPEAT);
}
static void init_gl(void) {
#if (BYTE_ORDER==BIG_ENDIAN)
glPixelStorei(GL_UNPACK_SWAP_BYTES,1);
#endif
glPixelStorei(GL_UNPACK_ALIGNMENT,1);
glClearColor(0.0,0.0,0.0,0.0);
glClearDepth(1.0);
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
LoadTextures();
}
int main(int argc, char **argv) {
int mode;
int fullscreen=0;
int xsize,ysize;
xsize=640; ysize=480;
/* Initialize SDL */
if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK)<0) {
printf("Error trying to init SDL: %s\n",SDL_GetError());
return -1;
}
if (fullscreen) mode=SDL_OPENGL | SDL_FULLSCREEN;
else mode=SDL_OPENGL;
/* Create the OpenGL screen */
if ( SDL_SetVideoMode(xsize, ysize, 0, mode) == NULL ) {
printf("Unable to create OpenGL screen: %s\n", SDL_GetError());
SDL_Quit();
return -2;
}
SDL_WM_SetCaption("Guinea Pig Adventure...",NULL);
/* Setup OpenGL screen */
init_gl();
reshape(xsize,ysize);
draw_pink_sphere(xsize,ysize);
/* Quit */
SDL_Quit();
return 0;
}