// Provides a seekdemo alias that allows fast-forwarding demo playback by a // given time. // // Setup: // // Add "exec input-demoseeking.cfg" and the following cl_hook_gamestart_all // hook to autoexec.cfg. If you already have a cl_hook_gamestart_all hook, add // the quoted command to your hook, separated with a semicolon: // // exec demoseeking.cfg // alias cl_hook_gamestart_all "demoseeking_game_started" // // Usage: // 1. start a demo (ply/playdemo command or menu), and // 2. while in a demo, use the "seekdemo " command // // Alternatively, use input-demoseeking.cfg instead to restore the default // bindings: // // * use ,. (comma and dot) keys to seek -5/+5 seconds // * use m/ (m and slash) keys to seek -30/+30 seconds // * - (minus) also works instead of slash // // Options: // // These options can be customized after "exec demoseeking.cfg". // // _demoseeking_min_speed // Minimum seek speed. Default 1.5. // _demoseeking_max_speed // Maximum seek speed. Default 200. Reduce this if the client freezes too // much while seeking. If the framerate is still high while seeking, you // may increase this, but increasing this with low framerate is unlikely to // improve seek performance. // _demoseeking_speed_factor // Factor of remaining time to seek speed. Default 10. // The seek speed is defined by the formula // // 1.0 + [remaining seek seconds] * _demoseeking_speed_factor // // bound by _demoseeking_min_speed and _demoseeking_max_speed. // _demoseeking_fast_speed // Seek speed above which rendering is disabled. Default 80. // // Variables: // // _demo_is_playing // Indicates whether a demo is currently playing. Set to 1 when playdemo // starts a demo. // Note: the setup above is needed to reset this reliably. // _current_demo_name // The name of the latest played demo. Same as the argument passed to the // last playdemo command. If playdemo fails to start the demo (e.g. when // the file does not exist) this variable is not updated. // Note: the setup above is needed to reset this reliably. // _demoseeking_is_seeking // 1 while a seek is in progress, 0 otherwise. // // Extras: // // - The alias playdemo_hook is run when demo playback is started. // - The alias seekdemo_hook_seek_end is run after a seek completed successfully. // - The alias seekdemo_getseektime can be used by scripts to get the current // playback time or seek target time. See its usage below. // option initialization set _demoseeking_options_loaded 1 set _demoseeking_min_speed 1.5 set _demoseeking_max_speed 200 set _demoseeking_fast_speed 80 set _demoseeking_speed_factor 10 // state initialization alias _demoseeking_init_vars "set _demoseeking_vars_loaded 1; set _demo_is_playing 0; set _current_demo_name \"\"; set _demoseeking_is_seeking 0; set _seekdemo_state idle; set _seekdemo_target 0; alias playdemo_hook \"\"; alias seekdemo_hook_seek_end" alias _demoseeking_init_vars1 "" _demoseeking_init_vars${_demoseeking_vars_loaded ?} // Hook into game start to reset seekdemo state. This prevents reloading the // last demo when seekdemo is accidentally called during an actual game. alias demoseeking_game_started "set _demo_is_playing 0; set _current_demo_name \"\"" // usage: seekdemo_getseektime // Populates with the current seek target time, if seeking. If not // seeking, populate it with the current playback time. alias seekdemo_getseektime "_seekdemo_getseektime_get \"$1\" _seekdemo_getseektime_rpn_$_seekdemo_state" alias _seekdemo_getseektime_get "cl_cmd rpn \"/$1\" ${$2} def" set _seekdemo_getseektime_rpn_idle time set _seekdemo_getseektime_rpn_starting _seekdemo_target set _seekdemo_getseektime_rpn_seeking _seekdemo_target // Hook into "playdemo" command. This alias runs immediately after the actual // "playdemo" command runs. Needed for seekdemo to restart the demo when // seeking backwards. Runs the playdemo_hook alias when a demo file is being // loaded. // --- // "cl_cmd rpn" fails while a map is loading, leaving the value of // _demoseeking_playdemo_success untouched, which means the playdemo command // succeeded. alias playdemo "set _demoseeking_playdemo_success 1; cl_cmd rpn /_demoseeking_playdemo_success 0 def; _demoseeking_playdemo_check \"$1\"" alias _demoseeking_playdemo_check "_demoseeking_playdemo_check_$_demoseeking_playdemo_success \"$1\"" alias _demoseeking_playdemo_check_0 "echo \"playdemo failed\"" alias _demoseeking_playdemo_check_1 "set _demo_is_playing 1; set _current_demo_name \"$1\"; playdemo_hook" // Hook into the "defer" command to restore state when "defer clear" is run // while seeking. "defer clear" seems to be run by some csprogs. // --- // compare the first argument. when it's "clear", run _demoseeking_restore alias defer "alias _demoseeking_deftmp_$1 \"\"; alias _demoseeking_deftmp_clear _demoseeking_restore; _demoseeking_deftmp_$1; unalias _demoseeking_deftmp_$1" alias _demoseeking_restore "_demoseeking_restore_$_seekdemo_state" // idle - no seek, no state to restore alias _demoseeking_restore_idle "" // startseek - special state where this script calls defer clear before // starting the seek loop alias _demoseeking_restore_startseek "" // starting - unexpected defer clear before seek started. Restore state by // running check for forward/backward seek. alias _demoseeking_restore_starting "_seekdemo_start_seek" // seeking - unexpected defer clear while seeking. Restart the loop. alias _demoseeking_restore_seeking "_seekdemo_check_time" // usage: seekdemo // Seek the playing demo by the number of seconds. May be a floating point // number. The seek is asynchronous. When a seek is already in action, the // target time is adjusted by the specified amount. // When starting a seek backwards, the demo is restarted before forwarding to // the earlier time. Does nothing when no demo is playing (_demo_is_playing). // --- // check if seek should start or if target time should be adjusted instead alias seekdemo "_seekdemo_checkstate_$_seekdemo_state ${* q}" // before starting seek, verify demo is playing first alias _seekdemo_checkstate_idle "set _seekdemo_demo_is_playing 0; cl_cmd rpn /_seekdemo_demo_is_playing _demo_is_playing 0 != def; _seekdemo_checkstart ${* q}" // when already seeking, only update the variable holding the target time alias _seekdemo_checkstate_starting "_seekdemo_checkstate_seeking ${* q}" alias _seekdemo_checkstate_seeking "rpn /_seekdemo_target _seekdemo_target \"$1\" add def" alias _seekdemo_checkstart "_seekdemo_checkstart_$_seekdemo_demo_is_playing ${* q}" alias _seekdemo_checkstart_0 "echo \"no demo currently playing\"" // start new seek alias _seekdemo_checkstart_1 "cl_cmd rpn /_seekdemo_target time \"$1\" add def; set _demoseeking_is_seeking 1; set _seekdemo_state starting; _seekdemo_save_options; _seekdemo_start_seek" // check if seeking forwards or backwards alias _seekdemo_start_seek "set _seekdemo_time_increasing err; cl_cmd rpn /_seekdemo_time_increasing _seekdemo_target time ge def; _seekdemo_check_increasing" alias _seekdemo_check_increasing "_seekdemo_check_increasing_$_seekdemo_time_increasing" // when seeking backwards, restart the demo and start the reload wait loop alias _seekdemo_check_increasing_0 "playdemo \"$_current_demo_name\"; set _seekdemo_reload_success 1; cl_cmd rpn _seekdemo_reload_success 0 def; _seekdemo_check_reloading" alias _seekdemo_check_increasing_1 "_seekdemo_check_time" alias _seekdemo_check_increasing_err "_seekdemo_failed \"(demo not loaded?)\"" alias _seekdemo_check_reloading "_seekdemo_check_reloading_$_seekdemo_reload_success" alias _seekdemo_check_reloading_0 "_seekdemo_failed (playdemo)" // launch the "defer 10" command as a fallback to stop waiting in case demo reload fails alias _seekdemo_check_reloading_1 "defer 10 \"_seekdemo_failed (reload)\"; _seekdemo_wait_reload" // demo reload wait loop. "cl_cmd rpn" fails to execute until demo finished loading, leaving _demo_loaded 0 alias _seekdemo_wait_reload "set _demo_loaded 0; cl_cmd rpn /_demo_loaded 1 def; _seekdemo_check_loaded" alias _seekdemo_check_loaded "_seekdemo_check_loaded_$_demo_loaded" alias _seekdemo_check_loaded_0 "defer 0.02 _seekdemo_wait_reload" // defer clear kills the fallback "defer 10" above alias _seekdemo_check_loaded_1 "set _seekdemo_state startseek; defer clear; set _seekdemo_state seeking; _seekdemo_check_time" // start of main seek loop, check if target time is reached alias _seekdemo_check_time "set _seekdemo_seek_state failed; cl_cmd rpn _seekdemo_target time dup /_seekdemo_current_time exch def gt /_seekdemo_seek_state exch def; _seekdemo_check_continue" alias _seekdemo_check_continue "_seekdemo_check_continue_$_seekdemo_seek_state" alias _seekdemo_check_continue_0 "_seekdemo_leave_seek; seekdemo_hook_seek_end" // Update options while seeking. // - Adjust the playback speed by setting the slowmo cvar. The further the seek, the faster the playback speed. // - Compare the speed to different speed levels to maximize performance for long seeks while reducing screen flashes for short ones. // Then continue the loop with "defer 0", so the check is run on every rendered frame. alias _seekdemo_check_continue_1 "set _seekdemo_speed_level failed; cl_cmd rpn _seekdemo_target time sub _demoseeking_speed_factor 0.01 max mul 1 add _demoseeking_min_speed max _demoseeking_max_speed min dup /slowmo exch def dup _demoseeking_fast_speed gt exch 2 gt add /_seekdemo_speed_level exch def; _seekdemo_set_options; defer 0 _seekdemo_check_time" alias _seekdemo_check_continue_failed "_seekdemo_failed \"(demo ended?)\"" alias _seekdemo_failed "_seekdemo_leave_seek; echo SEEK FAILED ${1 ?}" // Update options while and after seeking and for different levels of seek speed. // - Disable r_render only at high seek speed to maximize performance, but keep // it enabled otherwise to avoid jarring black screens for short seeks. // - snd_startnonloopingsounds disables all sounds that can safely be disabled, // avoiding lots of sounds playing at the same time. // - Other disabled options prevent side effects from fast seeking at low // framerate, where particles and other effects accumulate and appear at the // same time when the target has been reached. alias _seekdemo_leave_seek "_seekdemo_restore_options; set _demoseeking_is_seeking 0; set _seekdemo_state idle; r_render 1; snd_startnonloopingsounds 1; slowmo \"$_seekdemo_sav_slowmo\"" alias _seekdemo_set_options "_seekdemo_set_options_$_seekdemo_speed_level" // speed level 0: below 2x playback speed, target almost reached, all options restored alias _seekdemo_set_options_0 "r_render 1; snd_startnonloopingsounds 1; _seekdemo_restore_options" // speed level 1: between 2x and 80x playback speed, sounds disabled, game rendered with reduced graphics alias _seekdemo_set_options_1 "r_render 1; snd_startnonloopingsounds 0; _seekdemo_settemp_options" // speed level 2: above 80x playback speed, sounds disabled, game not rendered to maximize performance alias _seekdemo_set_options_2 "r_render 0; snd_startnonloopingsounds 0; _seekdemo_settemp_options" // save/restore options for reduced settings alias _seekdemo_save_options "set _seekdemo_sav_cl_decals \"$cl_decals\"; set _seekdemo_sav_cl_damagetext \"$cl_damagetext\"; set _seekdemo_sav_cl_particles \"$cl_particles\"; set _seekdemo_sav_cl_casings \"$cl_casings\"; set _seekdemo_sav_slowmo \"$slowmo\"" alias _seekdemo_settemp_options "settemp cl_decals 0; settemp cl_damagetext 0; settemp cl_particles 0; settemp cl_casings 0" alias _seekdemo_restore_options "settemp cl_decals \"$_seekdemo_sav_cl_decals\"; settemp cl_damagetext \"$_seekdemo_sav_cl_damagetext\"; settemp cl_particles \"$_seekdemo_sav_cl_particles\"; settemp cl_casings \"$_seekdemo_sav_cl_casings\""