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rocket.cc
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rocket.cc
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#include "first.h"
#include <GL/gl.h>
#include <GL/glu.h>
#include <SDL/SDL.h>
#include <SDL/SDL_mixer.h>
#include <plib/sg.h>
#include "object.h"
#include "rocket.h"
#include "input.h"
#include "billboard.h"
#include "printer.h"
#include "globals.h"
#define ROCKET_SIZE 4.0
#define GRAVITY 1.0
extern int game_state;
const char *digits[7] = {"6", "5", "4", "3", "2", "1", "0"};
char *tex_data = new char[128 * 128 * 3];
// returns random float between 0.0 and 1.0
float
frand()
{
return (float)(rand()) / RAND_MAX;
}
void
Rocket::load_sound_effects()
{
flame_snd = Mix_LoadWAV("data/audio/thrust.wav");
missile_snd = Mix_LoadWAV("data/audio/laser.wav");
countdown_snd = Mix_LoadWAV("data/audio/ignition2.wav");
explo_snd = Mix_LoadWAV("data/audio/explosion.wav");
liftoff_snd = Mix_LoadWAV("data/audio/liftoff.wav");
eagle_snd = Mix_LoadWAV("data/audio/eagle.wav");
assert(missile_snd && flame_snd && countdown_snd && explo_snd);
missile_channel = -1;
flame_channel = -1;
explo_channel = -1;
flame_channel = Mix_PlayChannel(-1, flame_snd, -1);
Mix_Pause(flame_channel);
music = Mix_LoadMUS("data/audio/roketz.mod");
assert(music);
Mix_PlayMusic(music, -1);
int prev_volume = Mix_VolumeMusic(128);
printf("prev volume = %d\n", prev_volume);
}
void
Rocket::init()
{
flags = OF_LIGHTING;
countdown = 0;
lives = 4;
points = 0;
use_cubemap = true;
first_liftoff = true;
// index into missile light array to use next
next_missile_light = 0;
// initialize position and orientation
// sgSetVec3(pos, 0.0f, 30.0f, 0.0f);
sgMakeIdentQuat(rot_quat);
sgSetVec3(dir, 0.0, 0.0, 1.0);
sgMakeIdentMat4(rot);
// set up initial rotation matrix...
setup_orient(0, 0);
sgCopyMat4(prev_cam_orient, globals.cam->orient_inv);
// load rocket jet particle system texture
jet.set_texture("data/gfx/particle.bmp");
// load explosion particle system texture
explo.set_texture("data/gfx/particle.bmp");
// load missile mesh
missile_mesh = Mesh::create_from_OBJ_file("data/objects/shot2.obj");
assert(missile_mesh);
missile_mesh->scale(1.0f);
missile_mesh->update_bsphere();
// load rocket mesh
mesh = Mesh::create_from_OBJ_file("data/objects/rocket2.obj");
assert(mesh);
mesh->scale(5);
// mesh->update_bsphere();
// setup dynamic flame light
flame_light.id = 100;
flame_light.enabled = true;
flame_light.intensity = 200.0f;
sgSetVec3(flame_light.color, 1.0f, 0.3f, 0.0f);
globals.world->add_dynamic_light(&flame_light);
// setup blue missile lights
for (int i = 0; i < 16; i++)
{
missile_lights[i].id = 1000 + 2*i;
missile_lights[i].enabled = false;
missile_lights[i].intensity = 128.0f;
sgSetVec3(missile_lights[i].color, 0.2f, 0.2f, 1.0f);
globals.world->add_dynamic_light(&missile_lights[i]);
}
explo_light.id = 1000 + 64;
explo_light.enabled = false;
globals.world->add_dynamic_light(&explo_light);
// setup jet flare billboard
jet_flare.add_image("data/gfx/flare.tga");
jet_flare.set_color(0.5, 0.5, 0.5, 1.0);
jet_flare.set_size(40.0);
jet_flare.depth_test = true;
// setup asteroid explosion billboard
asteroid_exp1.add_images("data/gfx/explosion3/ExplosionG", 3, ".tga");
asteroid_exp1.set_color(1.0, 1.0, 1.0, 0.5);
// asteroid_exp1.set_blend(GL_ONE_MINUS_SRC_COLOR, GL_SRC_COLOR);
asteroid_exp1.set_fps(24.0);
asteroid_exp1.set_size(300.0);
asteroid_exp1.one_shot = true;
asteroid_exp1.active = false;
load_sound_effects();
Mix_PlayChannel(-1, countdown_snd, 0);
setup_cubemaps();
prepare_for_takeoff();
}
void
Rocket::prepare_for_takeoff()
{
thrust = false;
on_base = true;
aim_mode = false;
refueling = false;
new_flame = 0.0f;
launch_ticks = 0.0f;
digit_ticks = 0.0f;
on_base_ticks = 0.0f;
fuel = 100.0;
shield = 100.0;
sgCopyVec3(pos, globals.world->start_vp);
pos[1] += 1.0;
sgSetVec3(velocity, 0.000f, 0.0f, 0.00f);
globals.cam->set_pos(10629.0, 85.0, 10670.0);
// move to starting room
globals.world->cur_room = globals.world->start_room;
in_room = globals.world->start_room;
}
void
Rocket::launch_missile(const sgVec3 direction)
{
sgVec3 start_pos, vel;
Object *missile = new Object;
missile->mesh = missile_mesh;
sgCopyVec3(start_pos, pos);
sgAddScaledVec3(start_pos, pos, dir, 20.0);
sgAddScaledVec3(vel, velocity, dir, 1.0);
missile->set_pos(start_pos);
missile->set_velocity(vel);
missile->set_orientation(orient);
missile->in_room = in_room;
missile->mass = 0.1f;
missile->flags |= OF_ALWAYS_COLLIDE;
// setup dynamic missile light
missile->light_id = next_missile_light;
missile_lights[next_missile_light].enabled = true;
sgCopyVec3(missile_lights[next_missile_light].pos, start_pos);
next_missile_light++;
if (next_missile_light > 15) next_missile_light = 0;
missiles.push_back(missile);
missile_channel = Mix_PlayChannel(missile_channel, missile_snd, 0);
printf("pang!\n");
}
void
copy_asteroid_properties(Object *dst, Object *src)
{
dst->set_pos(src->pos);
dst->set_velocity(src->velocity);
dst->in_room = src->in_room;
dst->flags = src->flags;
dst->type = src->type;
}
void
Rocket::asteroid_hit(Object *ast)
{
// delete original object
if (ast->age < 500) return;
ast->in_room->delete_object(ast);
if (!(ast->flags & OF_EXPLODED))
{
ast->flags |= OF_EXPLODED;
// not exploded before, split up in two pieces
Object *new1 = new Object;
Object *new2 = new Object;
// random asteroid meshes
int mesh1 = 4 + rand() % 3;
int mesh2 = 4 + rand() % 3;
new1->mesh = globals.world->asteroid[mesh1];
new2->mesh = globals.world->asteroid[mesh2];
new1->mass = 5.0f;
new2->mass = 5.0f;
// copy positions, velocities, flags etc.
copy_asteroid_properties(new1, ast);
copy_asteroid_properties(new2, ast);
// random separation velocity vector
sgVec3 exp_vel;
exp_vel[0] = frand();
exp_vel[1] = frand();
exp_vel[2] = frand();
sgNormalizeVec3(exp_vel);
sgScaleVec3(exp_vel, 0.5);
sgAddVec3(new1->velocity, exp_vel);
sgSubVec3(new2->velocity, exp_vel);
// add two new asteroids to the room's object list
ast->in_room->add_object(new1);
ast->in_room->add_object(new2);
}
// create explosion billboard
asteroid_exp1.set_center(ast->pos);
asteroid_exp1.active = true;
// set up explosion particle system
explo.setup_explosion(ast->pos);
// setup dynamic explosion light
sgCopyVec3(explo_light.pos, ast->pos);
sgSetVec3(explo_light.color, 1.0, 0.5, 0.0);
explo_light.intensity = 500.0f;
explo_light.enabled = true;
// play explosion sound
explo_channel = Mix_PlayChannel(explo_channel, explo_snd, 0);
Mix_Volume(explo_channel, MIX_MAX_VOLUME / 2);
points += 100;
}
void
Rocket::draw()
{
sgMat4 tmatrix, tmp;
if (aim_mode) {
sgMakeIdentMat4(tmatrix);
}
else {
// make rocket always point forward (inverse camera rotation)
// sgCopyMat4(tmatrix, globals.cam->orient_inv);
sgCopyMat4(prev_cam_orient, globals.cam->orient_inv);
}
if (!on_base)
{
#if 1
// sgCopyMat4(tmatrix, globals.cam->orient_inv);
#endif
// local thrust orientation
sgCopyMat4(tmatrix, prev_cam_orient);
sgQuatToMatrix(tmp, rot_quat) ;
sgPreMultMat4(tmatrix, tmp);
}
else {
sgVec3 axis;
sgSetVec3(axis, 1.0, 0.0, 0.0);
sgMakeRotMat4(tmatrix, 90.0f, axis);
// sgMakeIdentMat4(tmatrix);
}
if (game_state != GS_DYING && game_state != GS_GAMEOVER)
{
set_orientation(tmatrix);
Object::draw();
#if 0
sgVec3 shiftx, shifty;
sgCopyVec3(shiftx, globals.cam->e1);
sgScaleVec3(shiftx, 2.0);
#endif
if (use_cubemap)
{
#if 1
glViewport(-1, 0, globals.win_width - 1, globals.win_height);
draw_env();
glViewport(0, -1, globals.win_width, globals.win_height - 1);
draw_env();
glViewport(+1, 0, globals.win_width + 1, globals.win_height);
draw_env();
glViewport(0, +1, globals.win_width, globals.win_height +1);
draw_env();
glViewport(0, 0, globals.win_width, globals.win_height);
#else
draw_env();
#endif
}
}
// draw jet particle system
explo.draw_explo();
// explo.update(3);
// explo.draw_explo();
explo.update(globals.ticks_per_frame);
jet.draw();
if (thrust) jet_flare.draw();
// update missiles
vector<Object *>::iterator m;
for (m = missiles.begin(); m != missiles.end(); m++)
{
sgVec3 hit_point;
if ((*m)->check_wall_collisions(hit_point) ||
sgDistanceVec3(pos, (*m)->pos) > 10000.0)
{
missile_lights[(*m)->light_id].enabled = false;
m = missiles.erase(m);
if (m == missiles.end()) break;
}
(*m)->update();
// update dynamic light pos
sgCopyVec3(missile_lights[(*m)->light_id].pos, (*m)->pos);
if ((*m)->last_object_hit != NULL)
{
// ok, this missile did hit an object
// if ((*m)->last_object_hit->is_
// (*m)->last_object_hit->in_room->delete_object((*m)->last_object_hit);
asteroid_hit((*m)->last_object_hit);
}
}
// draw missiles
for (m = missiles.begin(); m != missiles.end(); m++)
{
(*m)->draw_shot();
}
// printf("%d\n", missiles.size());
asteroid_exp1.draw();
// draw countdown
if (game_state == GS_LAUNCHING)
{
launch_ticks += globals.ticks_per_frame;
if (launch_ticks > 1500) {
digit_ticks += globals.ticks_per_frame;
if (digit_ticks > 1000.0f) {
digit_ticks = 10.0;
countdown++;
}
if (countdown > 6) {
game_state = GS_PLAYING;
}
else
{
float z = 1010.0f - digit_ticks;
float size = 1000.0 / z;
float w, h;
get_letter_size(digits[countdown][0], size, &w, &h);
// float offs = size * 22.0 / 128.0f / 1.0;
// float offs = size * 22.0 / 128.0f * globals.win_width;
print_string(globals.win_width / 2 - w / 2,
globals.win_height / 2 - h / 2,
size, digits[countdown]);
}
}
}
// draw statistics
char strbuf[32];
// sprintf(strbuf, "Fuel: %d", (int)fuel);
// print_string(8, 4, 1.5f, strbuf);
// sprintf(strbuf, "Shield: %d", (int)shield);
// print_string(160, 4, 1.5f, strbuf);
sprintf(strbuf, "%05d", points);
print_string(globals.win_width / 2 - 65, globals.win_height - 47,
2.3f, strbuf);
if (refueling && (fuel < 97.0 || shield < 100.0))
{
print_string(globals.win_width / 2 - 85,
globals.win_height / 1.5, 1.5f, "REFUELING...");
// printf("%.2f\n", pos[1]);
}
}
//void orient_rocket(rocket_t *r, float d_yaw, float d_pitch)
void
orient_rocket(void *_r, int x, int y)
{
Rocket *r = (Rocket *)_r;
r->setup_orient(x, y);
}
void
Rocket::setup_orient(int x, int y)
{
// if (on_landing_spot) return;
float cx = (float)globals.win_width / 2.0;
float cy = (float)globals.win_height / 2.0;
float d_yaw = ((float)x - cx) / cx;
float d_pitch = (cy - (float)y) / cy;
// printf("ox=%f, oy=%f\n", d_yaw, d_pitch);
if (on_base) {
d_yaw = 0.0f;
d_pitch = 0.5f;
}
sgVec3 yaxis, xaxis;
sgMat4 rot;
sgQuat tmpq;
#if 1
sgMakeIdentQuat(rot_quat);
// rotate x axis
sgSetVec3(yaxis, 0.0, 1.0, 0.0);
// rotate around transformed x axis
sgRotQuat(tmpq, d_pitch * 180, yaxis ) ;
sgQuatToMatrix(rot, rot_quat) ;
sgXformVec3(yaxis, rot);
// rotate around y axis
sgRotQuat(rot_quat, d_yaw * -180, yaxis) ;
// rotate x axis
sgSetVec3(xaxis, 1.0, 0.0, 0.0);
sgQuatToMatrix(rot, rot_quat ) ;
sgXformVec3(xaxis, rot);
// rotate around transformed x axis
sgRotQuat(rot_quat, d_pitch * 180, xaxis ) ;
#endif
// sgSetVec3(yaxis, 0.0, 1.0, 0.0);
// sgRotQuat(rot_quat, d_yaw * -180, yaxis) ;
// sgSetVec3(yaxis, 1.0, 0.0, 0.0);
// sgRotQuat(rot_quat, d_pitch, yaxis ) ;
}
void
Rocket::update(float ticks, Camera *camera)
{
sgVec3 sp;
sgMat4 rot;
float dist_to_base = sgDistanceVec3(pos, globals.world->start_vp);
// printf("dtb = %.2f\n", dist_to_base);
asteroid_exp1.update(globals.ticks_per_frame);
jet.update_smoke(ticks);
// explo.update(ticks);
// explo.update_explosion();
if (game_state == GS_GAMEOVER)
{
return;
}
if (game_state == GS_DYING)
{
dead_ticks += ticks;
if (dead_ticks > 2000.0f)
{
game_state = GS_PLAYING;
prepare_for_takeoff();
}
return;
}
if (dist_to_base < 25.0f) {
on_base = true;
if (pos[1] < -459.9f && sgLengthVec3(velocity) < 0.01f)
{
on_base_ticks += ticks;
if (on_base_ticks > 1000) {
if (refueling == false)
{
refueling = true;
if (!first_liftoff) Mix_PlayChannel(-1, eagle_snd, 0);
}
fuel += 0.01 * ticks;
if (fuel > 100.0) fuel = 100.0;
if (shield < 100.0) shield += 0.01 * ticks;
else shield = 100.0;
}
}
}
else {
if (on_base)
{
// leaving base, warp pointer to position representing "up"
SDL_WarpMouse(globals.win_width / 2, globals.win_height / 4);
on_base = false;
if (first_liftoff)
{
// Mix_SetMusicPosition(4);
Mix_SetMusicPosition(25);
first_liftoff = false;
}
if (refueling) {
Mix_PlayChannel(-1, liftoff_snd, 0);
refueling = false;
}
on_base_ticks = 0.0f;
}
}
if (dist_to_base < 150.0f) {
// probably trying to land... use fixed camera position.
sgCopyVec3(globals.cam->wanted_pos, globals.world->start_vp);
globals.cam->wanted_pos[0] += 200.0;
globals.cam->wanted_pos[1] += 60.0;
}
//
if (thrust) {
// if (false) {
flame_light.enabled = true;
flame_light.intensity = 300 + 30 * frand();
}
else {
if (flame_light.intensity < 10.0) {
flame_light.enabled = false;
}
else {
flame_light.intensity *= pow(0.997, ticks);
}
}
// static int last_ticks;
if (key_down(SDLK_SPACE) && game_state == GS_PLAYING) thrust = 1;
else thrust = 0;
// printf("ticks = %f\n", ticks);
// ticks *= 0.001f;
float speed = sgLengthVec3(velocity);
// if (sgLengthVec3(velocity) > 0.1) {
// save previous camera position position
sgCopyVec3(camera->previous_pos, camera->current_pos);
// sp vector from current pos to wanted pos (how to move camera
sgSubVec3(sp, camera->current_pos, camera->wanted_pos);
// 0.05: how fast camera follows wanted pos after rocket
float cam_follow_speed = 0.05f;
// float cam_follow_speed = 0.55;
if (aim_mode) cam_follow_speed += 0.5;
sgScaleVec3(sp, 0.008 * ticks * (cam_follow_speed + speed));
// move towards wanted camera position
sgSubVec3(camera->current_pos, sp);
// printf("%d, %.1f\n", last_ticks, ticks);
// untransformed direction (on bsase, straight up)
sgSetVec3(dir, 0.0, 0.0, -1.0);
sgQuatToMatrix(rot, rot_quat) ;
// if (!aim_mode) {
// sgPostMultMat4(rot, camera->orient_inv) ;
sgPostMultMat4(rot, prev_cam_orient) ;
// }
// sgScaleVec3(sp, velocity, ticks);
// sgAddVec3(pos, sp);
#if 1
// perform collision detection...
sgVec3 new_pos, new_vel;
bool bounce = globals.world->aabsp.collide_and_bounce(
pos, velocity, 20.0, ticks, //globals.ticks_per_frame,
new_pos, new_vel);
Room *new_room = in_room->check_portals(pos, new_pos);
if (new_room != NULL) {
// switch rooms...
in_room = new_room;
}
sgCopyVec3(pos, new_pos);
sgCopyVec3(velocity, new_vel);
if (bounce)
{
// rocket bounced into a wall, 50% elastic bounce
sgScaleVec3(velocity, 0.5);
if (!on_base) {
float damage = sgLengthSquaredVec3(velocity);
// make sure rocket explodes if it's out of fuel...
if (fuel <= 0.0f) damage += 0.0026f;
shield -= 768.0f * damage;
}
if (shield < 0.0 && game_state != GS_DYING)
{
// doh! we're toasted...
shield = 0.0;
dead_ticks = 0.0;
lives--;
if (lives == 0)
{
game_state = GS_GAMEOVER;
Mix_HaltChannel(-1);
}
else
{
game_state = GS_DYING;
}
// create explosion billboard
asteroid_exp1.set_center(pos);
asteroid_exp1.active = true;
explo.setup_explosion(pos);
// play explosion sound
explo_channel = Mix_PlayChannel(explo_channel, explo_snd, 0);
Mix_Volume(explo_channel, MIX_MAX_VOLUME / 2);
sgZeroVec3(velocity);
}
}
if (pos[1] < -1800)
{
pos[1] = -1800.0;
velocity[1] = 0.0;
}
sgCopyVec3(flame_light.pos, pos);
#endif
// dir = direction that rocket points in
sgXformVec3(dir, rot);
// print_vector(dir);
// update jet flare position
sgVec3 flare_pos;
sgAddScaledVec3(flare_pos, pos, dir, -ROCKET_SIZE * 3.2f);
jet_flare.set_center(flare_pos);
if (thrust && fuel > 0.0)
{
fuel -= 0.0014 * ticks;
if (fuel < 0.0) fuel = 0.0;
#if 1
// thrust sound
if (flame_channel == -1) {
flame_channel = Mix_PlayChannel(-1, flame_snd, -1);
}
else Mix_Resume(flame_channel);
#endif
// accelerate in the forward direction
velocity[0] += 0.00020 * dir[0] * ticks;
velocity[1] += 0.00020 * dir[1] * ticks;
velocity[2] += 0.00020 * dir[2] * ticks;
new_flame += ticks * 2;
while (new_flame > 4.0) {
sgVec3 ppos, pvel;
sgAddScaledVec3(ppos, pos, dir, -ROCKET_SIZE * 3.0f);
sgAddScaledVec3(pvel, velocity, dir, -0.4f);
pvel[0] += -0.04 + 0.08 * frand();
pvel[1] += -0.04 + 0.08 * frand();
pvel[2] += -0.04 + 0.08 * frand();
sgAddScaledVec3(ppos, pvel, new_flame - 4.0);
jet.add_particle(ppos, pvel, 2600 + 400*frand());
new_flame -= 2.0;
}
}
else
{
Mix_Pause(flame_channel);
}
#if 1
// gravity
velocity[1] -= 0.00008 * ticks * GRAVITY;
// fake air resistance
double air_resistance = 1.0;
air_resistance = pow(0.9999, ticks / 2);
velocity[0] *= air_resistance;
velocity[1] *= air_resistance;
velocity[2] *= air_resistance;
#endif
// launch missiles
if (mouse_button_down(LEFT_MOUSE_BUTTON))
{
if ((globals.ticks - last_launch_tick) > 100)
{
last_launch_tick = globals.ticks;
launch_missile(dir);
}
}
if (key_down(SDLK_LSHIFT)) {
aim_mode = true;
}
else {
aim_mode = false;
}
if (explo_light.enabled)
{
if (explo_light.color[1] > 0.0)
{
// explo_light.color[1] -= 0.002 * ticks;
if (explo_light.color[1] < 0.0)
explo_light.color[1] = 0.0f;
}
if (explo_light.color[1] < 0.5)
{
// explo_light.color[0] -= 0.001 * ticks;
if (explo_light.color[0] < 0.0)
explo_light.color[0] = 0.0;
}
explo_light.intensity *= pow(0.996, ticks);
if (explo_light.intensity < 10.0)
explo_light.enabled = false;
}
}
void
Rocket::setup_camera()
{
Camera &cam = *globals.cam;
SGfloat f;
// sgVec3 e1, e2, e3, e4;
// sgVec4 view_mat[4];
sgVec3 up, vdir, tmp, s;
// try to move camera 50 units behind rocket (in direction of movement)
if (!aim_mode)
{
sgNormalizeVec3(s, velocity);
sgScaleVec3(s, 50.0);
}
else
{
// printf("dir = ");
// print_vector(dir);
sgScaleVec3(s, dir, 50.0f);
}
sgSubVec3(cam.wanted_pos, pos, s);
// veiw direction is camera->rocket (z axis)
sgSubVec3(vdir, cam.current_pos, pos);
sgNormalizeVec3(cam.e3, vdir);
// determine y axis
sgSetVec3(up, 0.0, 1.0, 0.0);
f = sgScalarProductVec3(up, cam.e3);
sgScaleVec3(tmp, cam.e3, f);
sgSubVec3(cam.e2, up, tmp);
sgNormalizeVec3(cam.e2);
// determine x axis
sgVectorProductVec3(cam.e1, cam.e2, cam.e3);
sgMakeIdentMat4(cam.view_mat);
// sgMakeTransMat4(view_mat, up);
// create view matrix
cam.view_mat[0][0] = cam.e1[0];
cam.view_mat[1][0] = cam.e1[1];
cam.view_mat[2][0] = cam.e1[2];
cam.view_mat[0][1] = cam.e2[0];
cam.view_mat[1][1] = cam.e2[1];
cam.view_mat[2][1] = cam.e2[2];
cam.view_mat[0][2] = cam.e3[0];
cam.view_mat[1][2] = cam.e3[1];
cam.view_mat[2][2] = cam.e3[2];
// view_mat[0][3] = 0.0;
// view_mat[1][3] = 0.0;
// view_mat[2][3] = 0.0;
cam.view_mat[3][3] = 1.0;
sgCopyMat4(globals.cam->orient, cam.view_mat);
sgTransposeNegateMat4(globals.cam->orient_inv, globals.cam->orient);
sgXformVec3(cam.e4, globals.cam->current_pos, cam.view_mat);
cam.view_mat[3][0] = -cam.e4[0];
cam.view_mat[3][1] = -cam.e4[1];
cam.view_mat[3][2] = -cam.e4[2];
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMultMatrixf((GLfloat *)cam.view_mat);
// print_matrix(view_mat);
}
static int cubefaces[6][3] = {{ 1, 90, GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB },
{ 1, -90, GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB },
{ 0, 90, GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB },
{ 0, -90, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB },
{ 1, 180, GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB },
{ 1, 0, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB }};
void
Rocket::setup_cubemaps()
{
int i;
for (i = 0; i < 6; i++)
{
if (i != 0) continue;
glTexImage2D(cubefaces[i][2], 0, GL_RGB, 128, 128, 0,
GL_RGB, GL_UNSIGNED_BYTE, NULL);
}
}
// update one face of the cube
void
Rocket::update_cubemap()
{
if (!use_cubemap) return;
sgMat4 view, turn;
sgVec3 axis;
static int face = 0;
if (cubefaces[face][0] == 1) sgSetVec3(axis, 0.0, 1.0, 0.0);
else sgSetVec3(axis, 1.0, 0.0, 0.0);
// translate to rocket position
sgMakeTransMat4(view, -pos[0], -pos[1], -pos[2]);
// look in the wanted cube face direction
sgMakeRotMat4(turn, cubefaces[face][1], axis);
// orient camera first
sgPostMultMat4(view, globals.cam->orient);
#if 1
if (face == 2 || face == 3)
{
sgMat4 turn2;
sgSetVec3(axis, 0.0, 0.0, 1.0);
sgMakeRotMat4(turn2, 180.0, axis);
sgPostMultMat4(view, turn2);
}
#endif
sgPostMultMat4(view, turn);
if (face != 2 || face != 3)
{
sgSetVec3(axis, 0.0, 0.0, 1.0);
sgMakeRotMat4(turn, 180.0, axis);
sgPostMultMat4(view, turn);
}
// push modelview
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glMultMatrixf((GLfloat *)view);
// push current viewport
glPushAttrib(GL_VIEWPORT_BIT);
// setup 90 degree, 128x128 pixel viewport
glViewport(0, 0, 128, 128);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPerspective(90, 1.0f, 5.0, 8000);
// draw environment from current rocket position
glClearColor(0.0, 0.0, 0.0, 1.0);
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
glDisable(GL_BLEND);
globals.frame -= 2;
globals.world->draw_rooms(in_room, pos);
globals.frame += 2;
#if 0
if (face == 2)