static void recalc_light(world_t w)
{
static const vec3_t c_noon = {1.0, 0.87, 1.0};
static const vec3_t c_dusk = {0.8, 0.4, 0.24};
static const vec3_t c_night = {0.05, 0.05, 0.2};
vec3_t color;
float lerp;
w->lpos[0] = 0.0;
w->lpos[1] = sin(w->lightAngle);
w->lpos[2] = cos(w->lightAngle);
if ( w->lpos[1] >= 0.0 ) {
lerp = w->lpos[1];
color[0] = c_dusk[0] + (c_noon[0] - c_dusk[0]) * lerp;
color[1] = c_dusk[1] + (c_noon[1] - c_dusk[1]) * lerp;
color[2] = c_dusk[2] + (c_noon[2] - c_dusk[2]) * lerp;
}else{
lerp = -(w->lpos[1] * 4);
if ( lerp > 1.0 )
lerp = 1.0;
w->lpos[1] = sin(-w->lightAngle);
w->lpos[2] = cos(-w->lightAngle);
color[0] = c_dusk[0] + (c_night[0] - c_dusk[0]) * lerp;
color[1] = c_dusk[1] + (c_night[1] - c_dusk[1]) * lerp;
color[2] = c_dusk[2] + (c_night[2] - c_dusk[2]) * lerp;
}
light_set_color(w->light, color[0], color[1], color[2]);
light_set_pos(w->light, w->lpos);
}
static void
prepare_frame (uint32_t time_offset, void *params, int iparam, viewpoint *view,
lighting *lights)
{
unsigned int i;
float secs = (float) time_offset / 1000.0f;
float lookat_y = 0.0f;
if (secs > 8)
lookat_y = secs - 8;
view_set_eye_pos (view, 0, 0, 15);
view_set_look_at (view, 0, lookat_y, 0);
light_set_pos (lights, 0, 3, 10, 15);
for (i = 0; i < active; i++)
{
pos[i][0] += velocity[i][0];
pos[i][1] += velocity[i][1];
pos[i][2] += velocity[i][2];
velocity[i][1] -= 0.01;
if (pos[i][1] < -6)
{
pos[i][0] = 0;
pos[i][1] = -2;
pos[i][2] = -4;
velocity[i][0] = ((float) (rand() & 255) - 127.5) / 500.0;
velocity[i][1] = 0.3;
velocity[i][2] = ((float) (rand() & 255) - 127.5) / 500.0;
}
}
if (spawnctr > 6 && active < DUCKS)
{
pos[active][0] = 0;
pos[active][1] = -2;
pos[active][2] = -4;
velocity[active][0] = ((float) (rand() & 255) - 127.5) / 500.0;
velocity[active][1] = 0.3;
velocity[active][2] = ((float) (rand() & 255) - 127.5) / 500.0;
rotaxis[active][0] = ((float) (rand() & 255) - 127.5) / 127.5;
rotaxis[active][1] = ((float) (rand() & 255) - 127.5) / 127.5;
rotaxis[active][2] = ((float) (rand() & 255) - 127.5) / 127.5;
duck_colour[active] = rand() & 1;
vec_normalize (&rotaxis[active][0], &rotaxis[active][0]);
active++;
spawnctr = 0;
}
spawnctr += 1;
rot1 += 2;
}
static void
do_feedback (uint32_t time_offset, void *params, int iparam, viewpoint *view,
lighting *lights)
{
uint32 tx_x = 1024, tx_y = 512;
float tmp[4], invw;
flame_pos[0] = 0;
flame_pos[1] = (float) (4500 - ((int) time_offset % 9000)) / 1100.0;
flame_pos[2] = 4;
view_set_eye_pos (view, 0, 0, -4.5);
view_set_look_at (view, 0, 0, 0);
light_set_pos (lights, 0, flame_pos[0], flame_pos[1], flame_pos[2]);
view_fix (view, lights);
light_fix (view, lights);
vec_transform3_fipr (&tmp[0], &(*view->camera)[0][0], &flame_pos[0]);
tmp[3] = 1.0f;
vec_transform_fipr (&flame_pos_xformed[0], &(*view->projection)[0][0],
&tmp[0]);
invw = 1.0 / flame_pos_xformed[3];
flame_pos_xformed[0] *= invw;
flame_pos_xformed[1] *= invw;
flame_pos_xformed[2] = invw;
/* Render to texture. */
pvr_wait_ready ();
pvr_scene_begin_txr (warp_texture[warp_active], &tx_x, &tx_y);
#if 0
user_clip.d1 = 0; /* minx. */
user_clip.d2 = 7; /* miny. */
user_clip.d3 = 1; /* maxx. */
user_clip.d4 = 9; /* maxy. */
#endif
pvr_list_begin (PVR_LIST_OP_POLY);
//pvr_prim (&user_clip, sizeof (pvr_poly_hdr_t));
draw_box ();
pvr_list_finish ();
pvr_list_begin (PVR_LIST_TR_POLY);
//pvr_prim (&user_clip, sizeof (pvr_poly_hdr_t));
draw_cooler ();
pvr_list_finish ();
pvr_scene_finish ();
}