void game_look(float phi, float theta)
{
struct game_view *view = &gl.view[CURR];
view->c[0] = view->p[0] + fsinf(V_RAD(theta)) * fcosf(V_RAD(phi));
view->c[1] = view->p[1] + fsinf(V_RAD(phi));
view->c[2] = view->p[2] - fcosf(V_RAD(theta)) * fcosf(V_RAD(phi));
gl.view[PREV] = gl.view[CURR];
}
static void title_timer(int id, float dt)
{
float g[3] = { 0.f, 0.f, 0.f };
game_step(g, dt);
game_set_fly(fcosf(time_state() / 10.f));
gui_timer(id, dt);
}
void video_push_persp(float fov, float n, float f)
{
if (hmd_stat())
hmd_persp(n, f);
else
{
GLfloat m[4][4];
GLfloat r = fov / 2 * V_PI / 180;
GLfloat s = fsinf(r);
GLfloat c = fcosf(r) / s;
GLfloat a = ((GLfloat) video.device_w /
(GLfloat) video.device_h);
glMatrixMode(GL_PROJECTION);
{
glLoadIdentity();
m[0][0] = c / a;
m[0][1] = 0.0f;
m[0][2] = 0.0f;
m[0][3] = 0.0f;
m[1][0] = 0.0f;
m[1][1] = c;
m[1][2] = 0.0f;
m[1][3] = 0.0f;
m[2][0] = 0.0f;
m[2][1] = 0.0f;
m[2][2] = -(f + n) / (f - n);
m[2][3] = -1.0f;
m[3][0] = 0.0f;
m[3][1] = 0.0f;
m[3][2] = -2.0f * n * f / (f - n);
m[3][3] = 0.0f;
glMultMatrixf(&m[0][0]);
}
glMatrixMode(GL_MODELVIEW);
{
glLoadIdentity();
}
}
}
void game_update_view(float dt)
{
const float y[3] = { 0.f, 1.f, 0.f };
float dy;
float dz;
float k;
float e[3];
float d[3];
float s = 2.f * dt;
if (!state)
return;
/* Center the view about the ball. */
v_cpy(view_c, file.vary.uv[ball].p);
v_inv(view_v, file.vary.uv[ball].v);
switch (config_get_d(CONFIG_CAMERA))
{
case 2:
/* Camera 2: View vector is given by view angle. */
view_e[2][0] = fsinf(V_RAD(view_a));
view_e[2][1] = 0.f;
view_e[2][2] = fcosf(V_RAD(view_a));
s = 1.f;
break;
default:
/* View vector approaches the ball velocity vector. */
v_mad(e, view_v, y, v_dot(view_v, y));
v_inv(e, e);
k = v_dot(view_v, view_v);
v_sub(view_e[2], view_p, view_c);
v_mad(view_e[2], view_e[2], view_v, k * dt * 0.1f);
}
/* Orthonormalize the basis of the view in its new position. */
v_crs(view_e[0], view_e[1], view_e[2]);
v_crs(view_e[2], view_e[0], view_e[1]);
v_nrm(view_e[0], view_e[0]);
v_nrm(view_e[2], view_e[2]);
/* The current view (dy, dz) approaches the ideal (view_dy, view_dz). */
v_sub(d, view_p, view_c);
dy = v_dot(view_e[1], d);
dz = v_dot(view_e[2], d);
dy += (view_dy - dy) * s;
dz += (view_dz - dz) * s;
/* Compute the new view position. */
view_p[0] = view_p[1] = view_p[2] = 0.f;
v_mad(view_p, view_c, view_e[1], dy);
v_mad(view_p, view_p, view_e[2], dz);
view_a = V_DEG(fatan2f(view_e[2][0], view_e[2][2]));
}
static void title_timer(int id, float dt)
{
static const char *demo = NULL;
float t;
real_time += dt;
switch (mode)
{
case 0: /* Mode 0: Pan across title level. */
if (real_time <= 20.0f)
game_set_fly(fcosf(V_PI * real_time / 20.0f));
else
{
game_fade(+1.0f);
real_time = 0.0f;
mode = 1;
}
break;
case 1: /* Mode 1: Fade out. Load demo level. */
if (real_time > 1.0f)
{
if ((demo = demo_pick()))
{
demo_replay_init(demo, NULL, NULL, NULL, NULL);
demo_time = 0.0f;
real_time = 0.0f;
mode = 2;
}
else
{
game_fade(-1.0f);
real_time = 0.0f;
mode = 0;
}
}
break;
case 2: /* Mode 2: Run demo. */
while (demo_time < real_time)
if (demo_replay_step(&t))
demo_time += t;
else
{
demo_replay_stop(0);
game_fade(+1.0f);
real_time = 0.0f;
mode = 3;
}
break;
case 3: /* Mode 3: Fade out. Load title level. */
if (real_time > 1.0f)
{
game_init("map-rlk/title.sol",
"map-back/jupiter.sol", "png/space.png", 0, 1);
real_time = 0.0f;
mode = 0;
}
break;
}
gui_timer(id, dt);
audio_timer(dt);
game_step_fade(dt);
}
static void title_timer(int id, float dt)
{
static const char *demo = NULL;
real_time += dt;
switch (mode)
{
case MODE_LEVEL: /* Pan across title level. */
if (real_time <= 20.0f)
{
game_client_fly(fcosf(V_PI * real_time / 20.0f));
}
else
{
game_fade(+1.0f);
real_time = 0.0f;
mode = MODE_LEVEL_FADE;
}
break;
case MODE_LEVEL_FADE: /* Fade out. Load demo level. */
if (real_time > 1.0f)
{
if (!items)
items = demo_dir_scan();
if ((demo = pick_demo(items)))
{
demo_replay_init(demo, NULL, NULL, NULL, NULL, NULL);
game_client_fly(0.0f);
real_time = 0.0f;
mode = MODE_DEMO;
}
else
{
game_fade(-1.0f);
real_time = 0.0f;
mode = MODE_LEVEL;
}
}
break;
case MODE_DEMO: /* Run demo. */
if (!demo_replay_step(dt))
{
demo_replay_stop(0);
game_fade(+1.0f);
real_time = 0.0f;
mode = MODE_DEMO_FADE;
}
else
game_client_blend(demo_replay_blend());
break;
case MODE_DEMO_FADE: /* Fade out. Load title level. */
if (real_time > 1.0f)
{
init_title_level();
real_time = 0.0f;
mode = MODE_LEVEL;
}
break;
}
gui_timer(id, dt);
game_step_fade(dt);
}
void game_look(float phi, float theta)
{
view_c[0] = view_p[0] + fsinf(V_RAD(theta)) * fcosf(V_RAD(phi));
view_c[1] = view_p[1] + fsinf(V_RAD(phi));
view_c[2] = view_p[2] - fcosf(V_RAD(theta)) * fcosf(V_RAD(phi));
}
static void game_update_view(float dt)
{
float dc = view_dc * (jump_b ? 2.0f * fabsf(jump_dt - 0.5f) : 1.0f);
float dx = view_ry * dt * 5.0f;
float k;
view_a += view_ry * dt * 90.f;
/* Center the view about the ball. */
v_cpy(view_c, file.uv->p);
v_inv(view_v, file.uv->v);
switch (config_get_d(CONFIG_CAMERA))
{
case 1: /* Camera 1: Viewpoint chases the ball position. */
v_sub(view_e[2], view_p, view_c);
break;
case 2: /* Camera 2: View vector is given by view angle. */
view_e[2][0] = fsinf(V_RAD(view_a));
view_e[2][1] = 0.f;
view_e[2][2] = fcosf(V_RAD(view_a));
dx = 0.0f;
break;
default: /* Default: View vector approaches the ball velocity vector. */
k = v_dot(view_v, view_v);
v_sub(view_e[2], view_p, view_c);
v_mad(view_e[2], view_e[2], view_v, k * dt / 4);
break;
}
/* Orthonormalize the basis of the view in its new position. */
v_crs(view_e[0], view_e[1], view_e[2]);
v_crs(view_e[2], view_e[0], view_e[1]);
v_nrm(view_e[0], view_e[0]);
v_nrm(view_e[2], view_e[2]);
/* Compute the new view position. */
k = 1.0f + v_dot(view_e[2], view_v) / 10.0f;
view_k = view_k + (k - view_k) * dt;
if (view_k < 0.5) view_k = 0.5;
v_cpy(view_p, file.uv->p);
v_mad(view_p, view_p, view_e[0], dx * view_k);
v_mad(view_p, view_p, view_e[1], view_dp * view_k);
v_mad(view_p, view_p, view_e[2], view_dz * view_k);
/* Compute the new view center. */
v_cpy(view_c, file.uv->p);
v_mad(view_c, view_c, view_e[1], dc);
/* Note the current view angle. */
view_a = V_DEG(fatan2f(view_e[2][0], view_e[2][2]));
}
static void game_update_view(float dt)
{
float dc = view.dc * (jump_b > 0 ? 2.0f * fabsf(jump_dt - 0.5f) : 1.0f);
float da = input_get_r() * dt * 90.0f;
float k;
float M[16], v[3], Y[3] = { 0.0f, 1.0f, 0.0f };
float view_v[3];
float spd = (float) cam_speed(input_get_c()) / 1000.0f;
/* Track manual rotation time. */
if (da == 0.0f)
{
if (view_time < 0.0f)
{
/* Transition time is influenced by activity time. */
view_fade = CLAMP(VIEW_FADE_MIN, -view_time, VIEW_FADE_MAX);
view_time = 0.0f;
}
/* Inactivity. */
view_time += dt;
}
else
{
if (view_time > 0.0f)
{
view_fade = 0.0f;
view_time = 0.0f;
}
/* Activity (yes, this is negative). */
view_time -= dt;
}
/* Center the view about the ball. */
v_cpy(view.c, vary.uv->p);
view_v[0] = -vary.uv->v[0];
view_v[1] = 0.0f;
view_v[2] = -vary.uv->v[2];
/* Compute view vector. */
if (spd >= 0.0f)
{
/* Viewpoint chases ball position. */
if (da == 0.0f)
{
float s;
v_sub(view.e[2], view.p, view.c);
v_nrm(view.e[2], view.e[2]);
/* Gradually restore view vector convergence rate. */
s = fpowf(view_time, 3.0f) / fpowf(view_fade, 3.0f);
s = CLAMP(0.0f, s, 1.0f);
v_mad(view.e[2], view.e[2], view_v, v_len(view_v) * spd * s * dt);
}
}
else
{
/* View vector is given by view angle. */
view.e[2][0] = fsinf(V_RAD(view.a));
view.e[2][1] = 0.0;
view.e[2][2] = fcosf(V_RAD(view.a));
}
/* Apply manual rotation. */
if (da != 0.0f)
{
m_rot(M, Y, V_RAD(da));
m_vxfm(v, M, view.e[2]);
v_cpy(view.e[2], v);
}
/* Orthonormalize the new view reference frame. */
v_crs(view.e[0], view.e[1], view.e[2]);
v_crs(view.e[2], view.e[0], view.e[1]);
v_nrm(view.e[0], view.e[0]);
v_nrm(view.e[2], view.e[2]);
/* Compute the new view position. */
k = 1.0f + v_dot(view.e[2], view_v) / 10.0f;
view_k = view_k + (k - view_k) * dt;
if (view_k < 0.5) view_k = 0.5;
v_scl(v, view.e[1], view.dp * view_k);
v_mad(v, v, view.e[2], view.dz * view_k);
v_add(view.p, v, vary.uv->p);
/* Compute the new view center. */
v_cpy(view.c, vary.uv->p);
v_mad(view.c, view.c, view.e[1], dc);
/* Note the current view angle. */
view.a = V_DEG(fatan2f(view.e[2][0], view.e[2][2]));
game_cmd_updview();
}
