+
+/*
+ * write the remote players final_mtx
+ */
+static void pose_remote_player( u32 index,
+ struct interp_frame *f0,
+ struct interp_frame *f1 ){
+
+ struct network_player *player = &netplayers.list[ index ];
+
+ struct interp_buffer *buf = &netplayers.interp_data[ index ];
+ struct skeleton *sk = &localplayer.skeleton;
+ m4x3f *final_mtx = &netplayers.final_mtx[ sk->bone_count*index ];
+ struct player_board_pose *board_pose = &netplayers.board_poses[index];
+
+ struct player_subsystem_interface *sys0 = player_subsystems[f0->subsystem],
+ *sys1 = NULL;
+
+ player_pose pose0, pose1, posed;
+ sys0->pose( &f0->data, &pose0 );
+
+ u8 instance_id = 0;
+
+ if( f1 ){
+ f32 t = (buf->t - f0->timestamp) / (f1->timestamp - f0->timestamp);
+ t = vg_clampf( t, 0.0f, 1.0f );
+
+ sys1 = player_subsystems[f1->subsystem];
+ sys1->pose( &f1->data, &pose1 );
+
+ u16 bounds = f0->boundary_hash^f1->boundary_hash;
+
+ if( bounds & NETMSG_BOUNDARY_BIT )
+ t = 1.0f;
+
+ if( bounds & NETMSG_GATE_BOUNDARY_BIT ){
+ /* TODO: Extra work retransforming the root_co, instance_id.. etc */
+ t = 1.0f;
+ }
+
+ instance_id = f1->instance_id;
+
+ lerp_player_pose( &pose0, &pose1, t, &posed );
+ apply_full_skeleton_pose( sk, &posed, final_mtx );
+ memcpy( board_pose, &posed.board, sizeof(*board_pose) );
+ }
+ else {
+ instance_id = f0->instance_id;
+
+ apply_full_skeleton_pose( sk, &pose0, final_mtx );
+ memcpy( board_pose, &pose0.board, sizeof(*board_pose) );
+ }
+
+ if( player->world_match[ instance_id ] )
+ player->active_world = &world_static.instances[ instance_id ];
+}
+
+/*
+ * animate remote player and store in final_mtx
+ */
+static void animate_remote_player( u32 index ){
+
+ /*
+ * Trys to keep the cursor inside the buffer
+ */
+ f64 min_time = -999999999.9,
+ max_time = 999999999.9,
+ abs_max_time = -999999999.9;
+
+ struct interp_frame *minframe = NULL,
+ *maxframe = NULL,
+ *abs_max_frame = NULL;
+
+ struct interp_buffer *buf = &netplayers.interp_data[index];
+ for( u32 i=0; i<vg_list_size(buf->frames); i ++ ){
+ struct interp_frame *ifr = &buf->frames[i];
+
+ if( ifr->active ){
+ if( (ifr->timestamp > min_time) && (ifr->timestamp < buf->t) ){
+ min_time = ifr->timestamp;
+ minframe = ifr;
+ }
+
+ if( (ifr->timestamp < max_time) && (ifr->timestamp > buf->t) ){
+ max_time = ifr->timestamp;
+ maxframe = ifr;
+ }
+
+ if( ifr->timestamp > abs_max_time ){
+ abs_max_time = ifr->timestamp;
+ abs_max_frame = ifr;
+ }
+ }
+ }
+
+ struct network_player *player = &netplayers.list[ index ];
+ if( player->active != 2 )
+ player->active_world = NULL;
+
+ if( minframe && maxframe ){
+ pose_remote_player( index, minframe, maxframe );
+ buf->t += vg.time_frame_delta;
+ }
+ else {
+ buf->t = abs_max_time - 0.25;
+
+ if( abs_max_frame )
+ pose_remote_player( index, abs_max_frame, NULL );
+ else
+ return;
+ }
+}
+
+/*
+ * Update full final_mtx for all remote players
+ */
+static void animate_remote_players(void){
+ for( u32 i=0; i<vg_list_size(netplayers.list); i ++ ){
+ struct network_player *player = &netplayers.list[i];
+ if( !player->active ) continue;
+
+ animate_remote_player( i );
+ }
+}
+
+/*
+ * Draw remote players
+ */
+static void render_remote_players( world_instance *world, camera *cam ){
+ SDL_AtomicLock( &addon_system.sl_cache_using_resources );
+ struct skeleton *sk = &localplayer.skeleton;
+
+ for( u32 i=0; i<NETWORK_MAX_PLAYERS; i ++ ){
+ struct network_player *player = &netplayers.list[i];
+ if( !player->active || player->isblocked ) continue;
+ if( player->active_world != world ) continue;
+
+ m4x3f *final_mtx = &netplayers.final_mtx[ sk->bone_count*i ];
+
+ struct player_model *model =
+ addon_cache_item_if_loaded( k_addon_type_player,
+ player->playermodel_view_slot );
+
+ if( !model ) model = &localplayer.fallback_model;
+ render_playermodel( cam, world, 0, model, sk, final_mtx );
+
+ struct player_board *board =
+ addon_cache_item_if_loaded( k_addon_type_board,
+ player->board_view_slot );
+ render_board( cam, world, board, final_mtx[localplayer.id_board],
+ &netplayers.board_poses[ i ], k_board_shader_player );
+ }
+
+ SDL_AtomicUnlock( &addon_system.sl_cache_using_resources );
+}
+
+static int remote_players_randomize( int argc, const char *argv[] ){
+ for( int i=0; i<NETWORK_MAX_PLAYERS; i ++ ){
+ struct network_player *player = &netplayers.list[i];
+
+ player->active = (vg_randu32() & 0x1)? 2: 0;
+ player->isfriend = vg_randu32() & vg_randu32() & 0x1;
+ player->isblocked = vg_randu32() & vg_randu32() & vg_randu32() & 0x1;
+ player->world_match[ 0 ] = vg_randu32() & 0x1;
+ player->world_match[ 1 ] = 0;
+
+ if( player->world_match[0] )
+ player->active_world = &world_static.instances[0];
+ else
+ player->active_world = NULL;
+
+ for( int i=0; i<sizeof(player->username)-1; i ++ ){
+ player->username[i] = 'a' + (vg_randu32() % 30);
+ player->username[i+1] = '\0';
+
+ if( (vg_randu32() % 8) == 3 )
+ break;
+ }
+
+ for( int i=0; i<3; i ++ ){
+ player->medals[i] = vg_randu32() % 3;
+ }
+
+ v3f pos;
+
+ vg_rand_sphere( pos );
+ v3_muladds( localplayer.rb.co, pos, 100.0f,
+ netplayers.final_mtx[ i*localplayer.skeleton.bone_count][3] );
+ }
+
+ return 0;
+}
+
+static void remote_players_init(void){
+ vg_console_reg_cmd( "add_test_players", remote_players_randomize, NULL );
+ vg_console_reg_var( "k_show_own_name", &k_show_own_name,
+ k_var_dtype_i32, 0 );
+ for( u32 i=0; i<NETWORK_SFX_QUEUE_LENGTH; i ++ ){
+ netplayers.sfx_queue[i].system = k_player_subsystem_invalid;
+ }
+}
+
+static void remote_sfx_pre_update(void){
+ for( u32 i=0; i<NETWORK_SFX_QUEUE_LENGTH; i ++ ){
+ struct net_sfx *si = &netplayers.sfx_queue[i];
+
+ if( si->system != k_player_subsystem_invalid ){
+ si->subframe -= vg.time_frame_delta;
+ if( si->subframe <= 0.0f ){
+ net_sfx_play( si );
+ si->system = k_player_subsystem_invalid;
+ }
+ }
+ }
+}
+
+/*
+ * animator->root_co of remote player
+ */
+static void remote_player_position( int id, v3f out_co ){
+ struct skeleton *sk = &localplayer.skeleton;
+ m4x3f *final_mtx = &netplayers.final_mtx[ sk->bone_count*id ];
+ v3_copy( final_mtx[0][3], out_co );
+}
+
+enum remote_player_gui_type {
+ k_remote_player_gui_type_stranger,
+ k_remote_player_gui_type_friend,
+ k_remote_player_gui_type_you,
+};
+
+/*
+ * Given players' root_co, get the screen point where we should draw tag info.
+ */
+static int player_tag_position( m4x4f pv, v3f root_co, ui_point out_point ){
+ v4f wpos;
+ v3_copy( root_co, wpos );
+ wpos[1] += 2.0f;
+ wpos[3] = 1.0f;
+
+ m4x4_mulv( pv, wpos, wpos );
+
+ if( wpos[3] > 0.0f ){
+ v2_muls( wpos, (1.0f/wpos[3]) * 0.5f, wpos );
+ v2_add( wpos, (v2f){ 0.5f, 0.5f }, wpos );
+
+ float k_max = 32000.0f;
+
+ out_point[0] = vg_clampf(wpos[0] * vg.window_x, -k_max, k_max );
+ out_point[1] = vg_clampf((1.0f-wpos[1]) * vg.window_y, -k_max, k_max );
+ return 1;
+ }
+ else
+ return 0;
+}
+
+/*
+ * Draw chat box relative to the root tag position on the screen
+ */
+static void chat_box( ui_point tag_root, f64 time, const char *message ){
+ if( (vg.time_real - time) > 15.0 )
+ return;
+
+ ui_rect wr;
+ wr[2] = ui_text_line_width( message ) + 8;
+ wr[3] = vg_ui.font->glyph_height + 2;
+ wr[0] = tag_root[0]-(wr[2]/2);
+ wr[1] = tag_root[1] - wr[3] - 8;
+
+ ui_fill( wr, ui_opacity( ui_colour(k_ui_bg), 0.23f ) );
+ ui_text( wr, message, 1, k_ui_align_middle_center, 0 );
+}
+
+/*
+ * Draw full imgui for remote player
+ */
+static void remote_player_nametag( ui_point tag_root,
+ struct network_player *player ){
+ vg_ui.font = &vg_ui_font_big;
+
+ ui_rect wr;
+ wr[2] = VG_MAX( ui_text_line_width( player->username ), 140 ) + 8;
+ wr[3] = 32;
+ wr[0] = tag_root[0]-(wr[2]/2);
+ wr[1] = tag_root[1]-(wr[3]/2);
+
+ ui_fill( wr, ui_opacity( ui_colour(k_ui_bg), 0.23f ) );
+ ui_text( wr, player->username, 1, k_ui_align_middle_center, 0 );
+
+ vg_ui.font = &vg_ui_font_small;
+
+ /* medals */
+ int cols = 0;
+ for( int i=0; i<3; i ++ )
+ if( player->medals[i] )
+ cols ++;
+
+ char buf[32];
+ vg_str str;
+
+ if( cols ){
+ f32 w = (f32)wr[2] / (f32)cols;
+ cols = 0;
+
+ for( int i=0; i<3; i ++ ){
+ if( player->medals[i] ){
+ ui_rect col = { wr[0] + (f32)cols*w, wr[1] + wr[3], w,
+ vg_ui.font->glyph_height };
+
+ vg_strnull( &str, buf, 32 );
+ vg_strcatch( &str, (char)k_SRglyph_vg_circle );
+ vg_strcati32( &str, player->medals[i] );
+
+ ui_text( col, buf, 1, k_ui_align_middle_center,
+ ui_colour( (enum ui_scheme_colour[]){
+ k_ui_yellow, k_ui_gray, k_ui_orange }[i] ) );
+
+ cols ++;
+ }
+ }
+ }
+}
+
+static void remote_player_world_gui( m4x4f pv, v3f root_co,
+ struct network_player *player ){
+ ui_point tag_root;
+ if( !player_tag_position( pv, root_co, tag_root ) )
+ return;
+
+ if( player ){
+ remote_player_nametag( tag_root, player );
+ chat_box( tag_root, player->chat_time, player->chat );
+ }
+ else {
+ if( netplayers.chatting )
+ chat_box( tag_root, vg.time_real, netplayers.chat_buffer );
+ else
+ chat_box( tag_root, netplayers.chat_time, netplayers.chat_message );
+ }
+}
+
+static void remote_player_gui_info( ui_rect box,
+ const char *username,
+ const char *activity,
+ enum remote_player_gui_type type,
+ int in_world ){
+
+ f32 opacity = in_world? 0.6f: 0.3f;
+
+ if( type == k_remote_player_gui_type_you )
+ ui_fill( box, ui_opacity( 0xff555555, opacity ) );
+ else
+ ui_fill( box, ui_opacity( 0xff000000, opacity ) );
+
+ if( type == k_remote_player_gui_type_friend )
+ ui_outline( box, -1, ui_opacity( 0xff00c4f0, opacity ), 0 );
+
+ ui_rect top, bottom;
+ ui_split_ratio( box, k_ui_axis_h, 0.6666f, 1, top, bottom );
+
+ u32 fg;
+
+ if( type == k_remote_player_gui_type_friend )
+ fg = ui_colour( k_ui_yellow + (in_world? k_ui_brighter: 0) );
+ else
+ fg = ui_colour( in_world? k_ui_fg: k_ui_fg+4 );
+
+ vg_ui.font = &vg_ui_font_big;
+ ui_text( top, username, 1, k_ui_align_middle_center, fg );
+ vg_ui.font = &vg_ui_font_small;
+
+ ui_text( bottom, activity, 1, k_ui_align_middle_center, fg );
+}
+
+static void remote_players_imgui_lobby(void){
+ /*
+ * TODO: send location string over the network */
+
+ ui_px y = 50, width = 200, height = 42, gap = 2,
+ x = vg.window_x - width;
+
+ vg_ui.font = &vg_ui_font_big;
+ ui_text( (ui_rect){ x, 0, width, height },
+ "Online Players", 1, k_ui_align_middle_center, 0 );
+ vg_ui.font = &vg_ui_font_small;
+
+
+ ui_rect us = { x, y, width, height };
+ /* FIXME: your location */
+ remote_player_gui_info( us, steam_username_at_startup, "you",
+ k_remote_player_gui_type_you, 1 );
+ y += height + gap;
+
+ for( u32 i=0; i<NETWORK_MAX_PLAYERS; i ++ ){
+ struct network_player *player = &netplayers.list[i];
+ if( !player->active || player->isblocked ) continue;
+
+ int in_same_world = player->active_world != world_current_instance();
+
+ if( !player->isfriend && !in_same_world )
+ continue;
+
+ ui_rect box = { x, y, width, height };
+ remote_player_gui_info( box, player->username, "<null>",
+ player->isfriend, in_same_world );
+ y += height + gap;
+ }
+}
+
+static void remote_players_imgui_world( world_instance *world, m4x4f pv,
+ f32 max_dist, int geo_cull ){
+ ui_flush( k_ui_shader_colour );
+
+ for( u32 i=0; i<NETWORK_MAX_PLAYERS; i++ ){
+ struct network_player *player = &netplayers.list[i];
+ if( player->active ){
+ v3f co;
+ remote_player_position( i, co );
+
+ if( player->active_world != world ){
+ continue;
+ }
+
+ f32 d2 = v3_dist2( co, localplayer.rb.co );
+
+ if( d2 > (max_dist*max_dist) )
+ continue;
+
+ f32 dist = sqrtf(d2);
+ f32 opacity = 0.95f * sqrtf(((max_dist-dist)/max_dist));
+
+ if( geo_cull ){
+ ray_hit hit;
+ hit.dist = dist;
+
+ v3f dir;
+ v3_sub( co, skaterift.cam.pos, dir );
+ v3_normalize( dir );
+
+ if( ray_world( world, skaterift.cam.pos, dir, &hit,
+ k_material_flag_ghosts ) ){
+ opacity *= 0.5f;
+ }
+ }
+
+ player->opacity = vg_lerpf( player->opacity, opacity,
+ vg.time_frame_delta * 2.0f );
+
+ remote_player_world_gui(
+ pv, netplayers.final_mtx[localplayer.skeleton.bone_count*i][3],
+ player );
+
+ vg_ui.colour[3] = player->opacity;
+ ui_flush( k_ui_shader_colour );
+ }
+ }
+
+ vg_ui.colour[3] = 1.0f;
+
+ remote_player_world_gui( pv, localplayer.rb.co, NULL );
+ ui_flush( k_ui_shader_colour );
+}
+
+static void chat_escape(void){
+ netplayers.chatting = -1;
+}
+
+static void chat_enter( char *buf, u32 len ){
+ vg_strncpy( buf, netplayers.chat_message, NETWORK_MAX_CHAT,
+ k_strncpy_always_add_null );
+ netplayers.chatting = -1;
+ netplayers.chat_time = vg.time_real;
+ chat_send_message( buf );
+}
+
+static void remote_players_chat_imgui(void){
+ if( netplayers.chatting == 1 ){
+ ui_rect box = { 0, 0, 400, 40 },
+ window = { 0, 0, vg.window_x, vg.window_y };
+ ui_rect_center( window, box );
+
+ struct ui_textbox_callbacks callbacks = {
+ .enter = chat_enter,
+ .escape = chat_escape
+ };
+
+ ui_textbox( box, NULL,
+ netplayers.chat_buffer, NETWORK_MAX_CHAT, 1,
+ UI_TEXTBOX_AUTOFOCUS, &callbacks );
+ }
+ else {
+ if( netplayers.chatting == -1 ){
+ netplayers.chatting = 0;
+ srinput.state = k_input_state_resume;
+ }
+ else {
+ if( (skaterift.activity == k_skaterift_default) &&
+ button_down( k_srbind_chat ) ){
+ netplayers.chatting = 1;
+ netplayers.chat_buffer[0] = '\0';
+ srinput.state = k_input_state_pause;
+ }
+ }
+ }
+}