void view_handle_create_single_rot_handle(d3pnt *pnt,d3vct *vct,d3ang *ang,d3pnt *hand_pnt)
{
matrix_type mat;
// rotations
if (ang!=NULL) {
if (ang->x!=0) {
matrix_rotate_x(&mat,ang->x);
matrix_vertex_multiply(&mat,&vct->x,&vct->y,&vct->z);
}
if (ang->y!=0) {
matrix_rotate_y(&mat,ang->y);
matrix_vertex_multiply(&mat,&vct->x,&vct->y,&vct->z);
}
if (ang->z!=0) {
matrix_rotate_z(&mat,ang->z);
matrix_vertex_multiply(&mat,&vct->x,&vct->y,&vct->z);
}
}
// make point
hand_pnt->x=pnt->x+(int)vct->x;
hand_pnt->y=pnt->y+(int)vct->y;
hand_pnt->z=pnt->z+(int)vct->z;
}
void select_model_get_drag_direction(d3pnt *pnt)
{
float fx,fy,fz;
matrix_type mat;
fx=(float)pnt->x;
fy=(float)pnt->y;
fz=(float)pnt->z;
if (state.model.ang.x!=0) {
matrix_rotate_x(&mat,state.model.ang.x);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
}
if (state.model.ang.y!=0) {
matrix_rotate_y(&mat,angle_add(state.model.ang.y,180.0f));
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
}
if (state.model.ang.z!=0) {
matrix_rotate_z(&mat,state.model.ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
}
pnt->x=(int)fx;
pnt->y=(int)fy;
pnt->z=(int)fz;
}
void model_get_view_complex_bounding_box(model_type *model,d3pnt *pnt,d3ang *ang,float resize,int *px,int *py,int *pz)
{
int n,yadd,sz;
float fx,fy,fz;
matrix_type rot_x_mat,rot_z_mat,rot_y_mat;
sz=(int)((float)(model->view_box.size.x>>1)*resize);
px[0]=px[3]=px[4]=px[7]=-sz;
px[1]=px[2]=px[5]=px[6]=sz;
yadd=model->view_box.size.y>>1;
py[4]=py[5]=py[6]=py[7]=(int)(((float)yadd)*resize)-yadd;
py[0]=py[1]=py[2]=py[3]=-(int)((float)(model->view_box.size.y+yadd)*resize)-yadd;
sz=(int)((float)(model->view_box.size.z>>1)*resize);
pz[0]=pz[1]=pz[4]=pz[5]=-sz;
pz[2]=pz[3]=pz[6]=pz[7]=sz;
matrix_rotate_x(&rot_x_mat,ang->x);
matrix_rotate_z(&rot_z_mat,ang->z);
matrix_rotate_y(&rot_y_mat,ang->y);
for (n=0;n!=8;n++) {
fx=(float)px[n];
fy=(float)py[n];
fz=(float)pz[n];
matrix_vertex_multiply(&rot_x_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_z_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_y_mat,&fx,&fy,&fz);
px[n]=((int)fx)+pnt->x;
py[n]=((int)fy)+pnt->y;
pz[n]=((int)fz)+pnt->z;
}
}
void view_draw_debug_bounding_box(d3pnt *pnt,d3ang *ang,d3pnt *size)
{
int n,xsz,zsz,px[8],py[8],pz[8];
float fx,fy,fz;
matrix_type rot_x_mat,rot_y_mat,rot_z_mat;
d3col col;
// bounding box
xsz=size->x>>1;
zsz=size->z>>1;
px[0]=px[1]=px[4]=px[5]=-xsz;
px[2]=px[3]=px[6]=px[7]=xsz;
py[0]=py[1]=py[2]=py[3]=-size->y;
py[4]=py[5]=py[6]=py[7]=0;
pz[1]=pz[2]=pz[5]=pz[6]=-zsz;
pz[0]=pz[3]=pz[4]=pz[7]=zsz;
matrix_rotate_x(&rot_x_mat,ang->x);
matrix_rotate_z(&rot_z_mat,ang->z);
matrix_rotate_y(&rot_y_mat,ang->y);
for (n=0;n!=8;n++) {
fx=(float)px[n];
fy=(float)py[n];
fz=(float)pz[n];
matrix_vertex_multiply(&rot_x_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_z_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_y_mat,&fx,&fy,&fz);
px[n]=(int)fx;
py[n]=(int)fy;
pz[n]=(int)fz;
}
for (n=0;n!=8;n++) {
px[n]=px[n]+pnt->x;
py[n]=py[n]+pnt->y;
pz[n]=pz[n]+pnt->z;
}
// draw box
col.r=col.g=0.2f;
col.b=1.0f;
glLineWidth(2.0f);
view_primitive_3D_line_cube(&col,1.0f,px,py,pz);
glLineWidth(1.0f);
}
void gl_lights_build_from_model(model_draw *draw,view_glsl_light_list_type *light_list)
{
int n,cx,cy,cz,sz,idx;
float fx,fy,fz;
d3pnt pnt,min,max;
matrix_type mat;
// need to move model if no rot on
memmove(&pnt,&draw->pnt,sizeof(d3pnt));
if (draw->no_rot.on) {
matrix_rotate_y(&mat,draw->no_rot.ang.y);
fx=(float)(pnt.x-draw->no_rot.center.x);
fy=(float)(pnt.y-draw->no_rot.center.y);
fz=(float)(pnt.z-draw->no_rot.center.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
pnt.x=((int)fx)+draw->no_rot.center.x;
pnt.y=((int)fy)+draw->no_rot.center.y;
pnt.z=((int)fz)+draw->no_rot.center.z;
}
// get model bounds
sz=draw->size.x>>1;
min.x=pnt.x-sz;
max.x=pnt.x+sz;
sz=draw->size.z>>1;
min.z=pnt.z-sz;
max.z=pnt.z+sz;
min.y=pnt.y-draw->size.y;
max.y=pnt.y;
// any rotations
cx=pnt.x+draw->center.x;
cy=pnt.y+draw->center.y;
cz=pnt.z+draw->center.z;
rotate_point(&min.x,&min.y,&min.z,cx,cy,cz,draw->rot.x,draw->rot.y,draw->rot.z);
rotate_point(&max.x,&max.y,&max.z,cx,cy,cz,draw->rot.x,draw->rot.y,draw->rot.z);
gl_lights_build_from_box(&pnt,&min,&max,light_list);
// do any tints
for (n=0;n!=max_view_lights_per_poly;n++) {
idx=n*3;
light_list->col[idx]*=draw->tint.r;
light_list->col[idx+1]*=draw->tint.g;
light_list->col[idx+2]*=draw->tint.b;
}
}
void camera_chase_static_get_position(d3pnt *pnt,d3ang *ang)
{
int cx,cz,cy;
float fx,fy,fz;
matrix_type mat;
obj_type *obj;
obj=object_find_uid(camera.obj_uid);
// get static chase position
fx=0;
fy=0;
fz=(float)camera.chase_distance;
matrix_rotate_zyx(&mat,camera.cur_chase_ang.x,camera.cur_chase_ang.y,camera.cur_chase_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
cx=(int)fx+obj->pnt.x;
cy=(int)fy+obj->pnt.y-obj->size.y;
cz=(int)fz+obj->pnt.z;
// new camera position
pnt->x=camera.pnt.x=cx+camera.chase_offset.x;
pnt->y=camera.pnt.y=cy+camera.chase_offset.y;
pnt->z=camera.pnt.z=cz+camera.chase_offset.z;
// looking angles
ang->x=(camera.cur_chase_ang.x+camera.ang.x);
ang->y=angle_add(camera.cur_chase_ang.y,camera.ang.y);
ang->z=camera.ang.z;
}
void camera_chase_static_calc_position(void)
{
float fx,fy,fz;
obj_type *obj;
matrix_type mat;
obj=server.obj_list.objs[camera.obj_idx];
// new camera position
fx=0;
fy=0;
fz=(float)map.camera.chase.distance;
matrix_rotate_zyx(&mat,map.camera.chase.track_ang.x,map.camera.chase.track_ang.y,map.camera.chase.track_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
camera.cur_pos.pnt.x=(obj->pnt.x+((int)fx))+map.camera.pnt_offset.x;
camera.cur_pos.pnt.y=((obj->pnt.y+obj->size.eye_offset)+((int)fy))+map.camera.pnt_offset.y;
camera.cur_pos.pnt.z=(obj->pnt.z+((int)fz))+map.camera.pnt_offset.z;
// looking angles
camera.cur_pos.ang.x=map.camera.chase.track_ang.x+map.camera.ang_offset.x;
if (camera.cur_pos.ang.x>180.0f) camera.cur_pos.ang.x-=360.0f;
camera.cur_pos.ang.y=map.camera.chase.track_ang.y+map.camera.ang_offset.y;
camera.cur_pos.ang.z=map.camera.chase.track_ang.z+map.camera.ang_offset.z;
}
void gl_3D_rotate(d3pnt *pnt,d3ang *ang)
{
float fx,fz,fy,ang_x;
matrix_type mat;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// need to cap look up/down at 90
ang_x=ang->x;
if (ang_x>=90.0f) ang_x=89.9f;
if (ang_x<=-90.0f) ang_x=-89.9f;
// create the look at vector
matrix_rotate_zyx(&mat,ang_x,ang->y,0.0f);
fx=fy=0.0f;
fz=-((float)camera.plane.near_z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
if (pnt==NULL) {
gluLookAt(fx,fy,fz,0.0f,0.0f,0.0f,0.0f,1.0f,0.0f);
}
else {
gluLookAt((pnt->x+fx),(pnt->y+fy),(pnt->z+fz),pnt->x,pnt->y,pnt->z,0.0f,1.0f,0.0f);
}
}
void map_mesh_rotate(map_type *map,int mesh_idx,d3pnt *center_pnt,d3ang *rot_ang)
{
int n,nvertex,npoly;
float fx,fy,fz;
d3vct f_mpt;
d3pnt *pt;
matrix_type mat;
map_mesh_type *mesh;
map_mesh_poly_type *poly;
mesh=&map->mesh.meshes[mesh_idx];
// get mesh rotation center
f_mpt.x=(float)(center_pnt->x+mesh->rot_off.x);
f_mpt.y=(float)(center_pnt->y+mesh->rot_off.y);
f_mpt.z=(float)(center_pnt->z+mesh->rot_off.z);
// matrixes
matrix_rotate_xyz(&mat,rot_ang->x,rot_ang->y,rot_ang->z);
// rotate vertexes
nvertex=mesh->nvertex;
pt=mesh->vertexes;
for (n=0; n!=nvertex; n++) {
fx=((float)pt->x)-f_mpt.x;
fy=((float)pt->y)-f_mpt.y;
fz=((float)pt->z)-f_mpt.z;
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
pt->x=(int)(fx+f_mpt.x);
pt->y=(int)(fy+f_mpt.y);
pt->z=(int)(fz+f_mpt.z);
pt++;
}
// fix boxes
npoly=mesh->npoly;
poly=mesh->polys;
for (n=0; n!=npoly; n++) {
map_prepare_mesh_poly(mesh,poly);
poly++;
}
// fix mesh box
map_prepare_mesh_box(mesh);
}
bool particle_spawn(int particle_idx,int obj_idx,d3pnt *pt,particle_rotate *rot,particle_motion *motion)
{
int n,count,shift,idx;
float xoff,yoff,zoff;
d3pnt ppt;
d3ang ang;
matrix_type mat;
iface_particle_type *particle;
particle=&iface.particle_list.particles[particle_idx];
// single particles
if (!particle->group.on) {
return(particle_spawn_single(particle_idx,obj_idx,pt,rot,motion));
}
// get offset to camera position
camera_get_angle_from(pt,&ang);
matrix_rotate_xy(&mat,ang.x,ang.y);
// groups of particles
count=particle->group.count;
for (n=0;n!=count;n++) {
idx=particle_find_index(particle->group.particles[n].name);
if (idx==-1) continue;
if (iface.particle_list.particles[idx].group.on) continue; // don't respawn other groups
// compute shifts
memmove(&ppt,pt,sizeof(d3pnt));
shift=iface.particle_list.particles[idx].group.particles[n].shift;
if (shift!=0) {
xoff=yoff=0.0f;
zoff=-(float)shift;
matrix_vertex_multiply(&mat,&xoff,&yoff,&zoff);
ppt.x+=(int)xoff;
ppt.y+=(int)yoff;
ppt.z+=(int)zoff;
}
// spawn particle
if (!particle_spawn_single(idx,obj_idx,&ppt,rot,motion)) return(FALSE);
}
return(TRUE);
}
void rotate_2D_line(int *lx,int *lz,int *rx,int *rz,int cx,int cz,float ang_y)
{
float fx,fy,fz;
matrix_type mat;
matrix_rotate_y(&mat,ang_y);
fx=(float)((*lx)-cx);
fy=0;
fz=(float)((*lz)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*lx=(int)fx+cx;
*lz=(int)fz+cz;
fx=(float)((*rx)-cx);
fy=0;
fz=(float)((*rz)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*rx=(int)fx+cx;
*rz=(int)fz+cz;
}
void rotate_2D_point_center(int *x,int *z,float ang_y)
{
float fx,fy,fz;
matrix_type mat;
matrix_rotate_y(&mat,ang_y);
fx=(float)*x;
fy=0;
fz=(float)*z;
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*x=(int)fx;
*z=(int)fz;
}
void model_get_point_position(model_draw_setup *draw_setup,int *x,int *y,int *z)
{
int cx,cy,cz;
float fx,fy,fz;
matrix_type rot_x_mat,rot_z_mat,rot_y_mat,sway_mat;
fx=(float)*x;
fz=(float)*z;
fy=(float)*y;
// sway
matrix_rotate_zyx(&sway_mat,draw_setup->sway.x,draw_setup->sway.y,draw_setup->sway.z);
matrix_vertex_multiply(&sway_mat,&fx,&fy,&fz);
// rotate
cx=draw_setup->center.x;
cy=draw_setup->center.y;
cz=draw_setup->center.z;
fx-=(float)cx;
fy-=(float)cy;
fz-=(float)cz;
matrix_rotate_x(&rot_x_mat,draw_setup->ang.x);
matrix_rotate_z(&rot_z_mat,draw_setup->ang.z);
matrix_rotate_y(&rot_y_mat,draw_setup->ang.y);
matrix_vertex_multiply(&rot_x_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_z_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_y_mat,&fx,&fy,&fz);
*x=(int)(fx+draw_setup->move.x)+cx;
*y=(int)(fy+draw_setup->move.y)+cy;
*z=(int)(fz+draw_setup->move.z)+cz;
}
void rotate_2D_point(int *x,int *z,int cx,int cz,float ang_y)
{
float fx,fy,fz;
matrix_type mat;
matrix_rotate_y(&mat,ang_y);
fx=(float)((*x)-cx);
fy=0;
fz=(float)((*z)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*x=(int)fx+cx;
*z=(int)fz+cz;
}
void rotate_point_center(int *x,int *y,int *z,float ang_x,float ang_y,float ang_z)
{
float fx,fy,fz;
matrix_type mat;
matrix_rotate_xyz(&mat,ang_x,ang_y,ang_z);
fx=(float)*x;
fy=(float)*y;
fz=(float)*z;
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*x=(int)fx;
*y=(int)fy;
*z=(int)fz;
}
void rotate_point(int *x,int *y,int *z,int cx,int cy,int cz,float ang_x,float ang_y,float ang_z)
{
float fx,fy,fz;
matrix_type mat;
matrix_rotate_xyz(&mat,ang_x,ang_y,ang_z);
fx=(float)((*x)-cx);
fy=(float)((*y)-cy);
fz=(float)((*z)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*x=(int)fx+cx;
*y=(int)fy+cy;
*z=(int)fz+cz;
}
void rotate_2D_polygon(int ptsz,int *x,int *z,int cx,int cz,float ang_y)
{
int n;
int *px,*pz;
float fx,fy,fz;
matrix_type mat;
matrix_rotate_y(&mat,ang_y);
px=x;
pz=z;
for (n=0;n<ptsz;n++) {
fx=(float)((*px)-cx);
fy=0;
fz=(float)((*pz)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*px++=(int)fx+cx;
*pz++=(int)fz+cz;
}
}
void rotate_polygon_center(int ptsz,int *x,int *y,int *z,float ang_x,float ang_y,float ang_z)
{
int n;
int *px,*py,*pz;
float fx,fy,fz;
matrix_type mat;
matrix_rotate_xyz(&mat,ang_x,ang_y,ang_z);
px=x;
py=y;
pz=z;
for (n=0;n<ptsz;n++) {
fx=(float)*px;
fy=(float)*py;
fz=(float)*pz;
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*px++=(int)fx;
*py++=(int)fy;
*pz++=(int)fz;
}
}
void rotate_polygon(int ptsz,int *x,int *y,int *z,int cx,int cy,int cz,float ang_x,float ang_y,float ang_z)
{
int n;
int *px,*py,*pz;
float fx,fy,fz;
matrix_type mat;
matrix_rotate_xyz(&mat,ang_x,ang_y,ang_z);
px=x;
py=y;
pz=z;
for (n=0;n<ptsz;n++) {
fx=(float)((*px)-cx);
fy=(float)((*py)-cy);
fz=(float)((*pz)-cz);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
*px++=(int)fx+cx;
*py++=(int)fy+cy;
*pz++=(int)fz+cz;
}
}
void view_dim3rtl_effect_mesh_ring_update(effect_type *effect,int count,int image_offset)
{
int n,k,life_tick,idx,
material_id;
short *polys,*vk;
float mx,my,mz,fx,fy,fz,
outer_sz,inner_sz,rd,
color_dif,alpha,gx,gy,g_size,
f_count,f_tick;
float *vp,*uv;
d3pnt pnt;
rtlColor col;
iface_ring_type *ring;
ring_effect_data *eff_ring;
matrix_type mat_x,mat_y,mat_z;
eff_ring=&effect->data.ring;
ring=&iface.ring_list.rings[eff_ring->ring_idx];
// get size
life_tick=effect->life_tick;
f_tick=(float)life_tick;
f_count=(float)count;
outer_sz=(float)(ring->end_outer_size-ring->start_outer_size);
outer_sz=((outer_sz*f_count)/f_tick)+(float)ring->start_outer_size;
inner_sz=(float)(ring->end_inner_size-ring->start_inner_size);
inner_sz=((inner_sz*f_count)/f_tick)+(float)ring->start_inner_size;
// setup images
effect_image_animate_get_uv(count,image_offset,&ring->animate,&gx,&gy,&g_size);
// position and ring rotation
ring_draw_position(effect,count,&pnt);
mx=(float)pnt.x;
my=(float)pnt.y;
mz=(float)pnt.z;
fx=f_count*ring->rot.x;
fx+=(fx*ring->rot_accel.x);
fx=angle_add(eff_ring->ang.x,fx);
fy=f_count*ring->rot.y;
fy+=(fy*ring->rot_accel.y);
fy=angle_add(eff_ring->ang.y,fy);
fz=f_count*ring->rot.z;
fz+=(fz*ring->rot_accel.z);
fz=angle_add(eff_ring->ang.z,fz);
matrix_rotate_x(&mat_x,-fx);
matrix_rotate_z(&mat_z,fz);
matrix_rotate_y(&mat_y,fy);
// create the ring vertexes
rtlSceneMeshMapVertexPointer(view_rtl_draw_scene_id,effect->rtl_mesh_id,(void**)&vp);
rtlSceneMeshMapUVPointer(view_rtl_draw_scene_id,effect->rtl_mesh_id,(void**)&uv);
for (n=0;n!=360;n+=10) {
rd=((float)n)*ANG_to_RAD;
// outer
fx=cosf(rd)*outer_sz;
fy=-(sinf(rd)*outer_sz);
fz=0.0f;
matrix_vertex_multiply(&mat_x,&fx,&fy,&fz);
matrix_vertex_multiply(&mat_z,&fx,&fy,&fz);
matrix_vertex_multiply(&mat_y,&fx,&fy,&fz);
*vp++=mx+fx;
*vp++=my+fy;
*vp++=mz+fz;
*uv++=gx+(g_size*((fx+outer_sz)/(outer_sz*2.0f)));
*uv++=gy+(g_size*((fy+outer_sz)/(outer_sz*2.0f)));
// inner
fx=cosf(rd)*inner_sz;
fy=-(sinf(rd)*inner_sz);
fz=0.0f;
matrix_vertex_multiply(&mat_x,&fx,&fy,&fz);
matrix_vertex_multiply(&mat_z,&fx,&fy,&fz);
matrix_vertex_multiply(&mat_y,&fx,&fy,&fz);
*vp++=mx+fx;
*vp++=my+fy;
*vp++=mz+fz;
*uv++=gx+(g_size*((fx+outer_sz)/(outer_sz*2.0f)));
*uv++=gy+(g_size*((fy+outer_sz)/(outer_sz*2.0f)));
}
rtlSceneMeshUnMapVertexPointer(view_rtl_draw_scene_id,effect->rtl_mesh_id);
rtlSceneMeshUnMapUVPointer(view_rtl_draw_scene_id,effect->rtl_mesh_id);
// create the polys
// last one needs to wrap around to beginning
material_id=ring->rtl_material_id;
polys=(short*)malloc(sizeof(short)*(36*10));
vk=polys;
idx=0;
for (n=0;n!=36;n++) {
*vk++=4;
*vk++=material_id;
*vk++=idx;
*vk++=idx;
*vk++=idx+1;
*vk++=idx+1;
if (n!=35) {
k=idx+2;
}
else {
k=0;
}
*vk++=k+1;
*vk++=k+1;
*vk++=k;
*vk++=k;
idx+=2;
}
rtlSceneMeshSetPoly(view_rtl_draw_scene_id,effect->rtl_mesh_id,RL_MESH_FORMAT_POLY_SHORT_VERTEX_UV,36,polys);
free(polys);
// set color and alpha
color_dif=ring->end_color.r-ring->start_color.r;
col.r=ring->start_color.r+((color_dif*f_count)/f_tick);
color_dif=ring->end_color.g-ring->start_color.g;
col.g=ring->start_color.g+((color_dif*f_count)/f_tick);
color_dif=ring->end_color.b-ring->start_color.b;
col.b=ring->start_color.b+((color_dif*f_count)/f_tick);
alpha=ring->end_alpha-ring->start_alpha;
col.a=((alpha*f_count)/f_tick)+ring->start_alpha;
rtlSceneMeshSetPolyColorAll(view_rtl_draw_scene_id,effect->rtl_mesh_id,&col);
}
void camera_chase_calc_position(void)
{
int radius;
float fang,fx,fy,fz;
d3pnt spt,ept;
ray_trace_contact_type contact;
matrix_type mat;
obj_type *obj;
obj=server.obj_list.objs[camera.obj_idx];
// get camera starting position
radius=object_get_radius(obj);
fx=0;
fy=0;
fz=(float)(radius>>2); // always move camera back to protect against hitting walls in front of player
fang=angle_add(camera.cur_pos.chase_ang.x,(obj->view_ang.x*2));
matrix_rotate_zyx(&mat,fang,camera.cur_pos.chase_ang.y,camera.cur_pos.chase_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
spt.x=((int)fx)+obj->pnt.x;
spt.y=((int)fy)+(obj->pnt.y+obj->size.eye_offset);
spt.z=((int)fz)+obj->pnt.z;
// get camera ending position
fx=0;
fy=0;
fz=(float)map.camera.chase.distance;
fang=angle_add(camera.cur_pos.chase_ang.x,-obj->view_ang.x);
matrix_rotate_zyx(&mat,fang,camera.cur_pos.chase_ang.y,camera.cur_pos.chase_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
ept.x=((int)fx)+obj->pnt.x;
ept.y=((int)fy)+(obj->pnt.y+obj->size.eye_offset);
ept.z=((int)fz)+obj->pnt.z;
// setup contacts
contact.obj.on=TRUE;
contact.obj.ignore_idx=obj->idx;
contact.proj.on=FALSE;
contact.origin=poly_ray_trace_origin_unknown;
ray_trace_map_by_point(&spt,&ept,&contact);
// the position
camera.cur_pos.pnt.x=contact.hpt.x+map.camera.pnt_offset.x;
camera.cur_pos.pnt.y=contact.hpt.y+map.camera.pnt_offset.y;
camera.cur_pos.pnt.z=contact.hpt.z+map.camera.pnt_offset.z;
if (obj->bump.on) camera.cur_pos.pnt.y+=obj->bump.smooth_offset;
// looking angles
// need to reverse X looking angle so it
// behaves opposite track X angle
camera.cur_pos.ang.x=(camera.cur_pos.chase_ang.x-map.camera.ang_offset.x)-obj->view_ang.x;
camera.cur_pos.ang.y=angle_add(camera.cur_pos.chase_ang.y,map.camera.ang_offset.y);
camera.cur_pos.ang.z=camera.cur_pos.chase_ang.z+map.camera.ang_offset.z;
}
void camera_chase_get_position(d3pnt *pnt,d3ang *ang)
{
int n,xadd,yadd,zadd,radius,div,
cx,cz,cy;
float fang,fx,fy,fz;
d3pnt spt,ept,hpt;
ray_trace_contact_type contact;
matrix_type mat;
obj_type *obj;
weapon_type *weap;
obj=object_find_uid(camera.obj_uid);
// get maximum camera offset
fx=0;
fy=0;
fz=(float)camera.chase_distance;
fang=angle_add(camera.cur_chase_ang.x,-obj->view_ang.x);
matrix_rotate_zyx(&mat,fang,camera.cur_chase_ang.y,camera.cur_chase_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
cx=(int)fx+obj->pnt.x;
cy=(int)fy+obj->pnt.y;
cz=(int)fz+obj->pnt.z;
// get camera movement
div=camera_chase_get_division(abs(cx-obj->pnt.x),abs(cz-obj->pnt.z),abs(cy-obj->pnt.y));
if (div==0) div=1;
xadd=(cx-obj->pnt.x)/div;
yadd=(cy-obj->pnt.y)/div;
zadd=(cz-obj->pnt.z)/div;
// get camera starting position
radius=camera.chase_size;
fx=0;
fy=0;
fz=(float)(radius>>2); // always move camera back to protect against hitting walls in front of player
fang=angle_add(camera.cur_chase_ang.x,(obj->view_ang.x*2));
matrix_rotate_zyx(&mat,fang,camera.cur_chase_ang.y,camera.cur_chase_ang.z);
matrix_vertex_multiply(&mat,&fx,&fy,&fz);
cx=(int)fx+obj->pnt.x;
cz=(int)fz+obj->pnt.z;
cy=(int)fy+(obj->pnt.y-obj->size.y);
// setup contacts
contact.obj.on=TRUE;
contact.obj.ignore_uid=obj->uid;
contact.proj.on=FALSE;
contact.origin=poly_ray_trace_origin_unknown;
// move camera
for (n=0;n!=div;n++) {
// xz movement
spt.x=cx;
spt.y=cy;
spt.z=cz;
ept.x=cx+xadd;
ept.y=cy;
ept.z=cz+zadd;
contact.hit_mode=poly_ray_trace_hit_mode_wall_only;
if (!ray_trace_map_by_point(&spt,&ept,&hpt,&contact)) {
cx+=xadd;
cz+=zadd;
}
// y movement
spt.x=cx;
spt.y=cy;
spt.z=cz;
ept.x=cx;
ept.y=cy+yadd;
ept.z=cz;
contact.hit_mode=poly_ray_trace_hit_mode_floor_only;
if (!ray_trace_map_by_point(&spt,&ept,&hpt,&contact)) cy+=yadd;
}
// new camera position
camera.pnt.x=cx;
camera.pnt.y=cy;
camera.pnt.z=cz;
// return values
memmove(pnt,&camera.pnt,sizeof(d3pnt));
// looking angles
ang->x=(camera.cur_chase_ang.x+camera.ang.x)-obj->view_ang.x;
weap=weapon_find_current(obj);
if (weap!=NULL) ang->x=object_player_look_constrain(obj,weap,ang->x);
ang->y=angle_add(camera.cur_chase_ang.y,camera.ang.y);
ang->z=camera.ang.z;
}
void view_draw_debug_bounding_box(obj_type *obj)
{
int n,xsz,ysz,zsz,px[8],py[8],pz[8];
float fx,fy,fz;
matrix_type rot_x_mat,rot_y_mat,rot_z_mat;
model_type *mdl;
mdl=model_find_uid(obj->draw.uid);
if (mdl==NULL) return;
// bounding box
xsz=obj->size.x>>1;
zsz=obj->size.z>>1;
ysz=obj->size.y;
if (obj->duck.mode!=dm_stand) ysz-=obj->duck.y_move;
px[0]=px[1]=px[4]=px[5]=-xsz;
px[2]=px[3]=px[6]=px[7]=xsz;
py[0]=py[1]=py[2]=py[3]=-ysz;
py[4]=py[5]=py[6]=py[7]=0;
pz[1]=pz[2]=pz[5]=pz[6]=-zsz;
pz[0]=pz[3]=pz[4]=pz[7]=zsz;
matrix_rotate_x(&rot_x_mat,obj->draw.setup.ang.x);
matrix_rotate_z(&rot_z_mat,obj->draw.setup.ang.z);
matrix_rotate_y(&rot_y_mat,obj->draw.setup.ang.y);
for (n=0;n!=8;n++) {
fx=(float)(px[n]-mdl->center.x);
fy=(float)(py[n]-mdl->center.y);
fz=(float)(pz[n]-mdl->center.z);
matrix_vertex_multiply(&rot_x_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_z_mat,&fx,&fy,&fz);
matrix_vertex_multiply(&rot_y_mat,&fx,&fy,&fz);
px[n]=((int)fx)+mdl->center.x;
py[n]=((int)fy)+mdl->center.y;
pz[n]=((int)fz)+mdl->center.z;
}
for (n=0;n!=8;n++) {
px[n]=px[n]+obj->pnt.x;
py[n]=py[n]+obj->pnt.y;
pz[n]=pz[n]+obj->pnt.z;
}
// draw box
glColor4f(0.2f,0.2f,1.0f,1.0f);
glLineWidth(2.0f);
glBegin(GL_LINE_LOOP);
glVertex3i(px[0],py[0],pz[0]);
glVertex3i(px[1],py[1],pz[1]);
glVertex3i(px[2],py[2],pz[2]);
glVertex3i(px[3],py[3],pz[3]);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3i(px[4],py[4],pz[4]);
glVertex3i(px[5],py[5],pz[5]);
glVertex3i(px[6],py[6],pz[6]);
glVertex3i(px[7],py[7],pz[7]);
glEnd();
glBegin(GL_LINES);
glVertex3i(px[0],py[0],pz[0]);
glVertex3i(px[4],py[4],pz[4]);
glVertex3i(px[1],py[1],pz[1]);
glVertex3i(px[5],py[5],pz[5]);
glVertex3i(px[2],py[2],pz[2]);
glVertex3i(px[6],py[6],pz[6]);
glVertex3i(px[3],py[3],pz[3]);
glVertex3i(px[7],py[7],pz[7]);
glEnd();
glLineWidth(1.0f);
glColor4f(0.0f,0.0f,0.0f,1.0f);
}