#define TICK_LIMIT_RUNNING 80
#define TICK_LIMIT_TO_RUN 70
#define TICK_LIMIT_MC 70
#define TICK_LIMIT_MC_INIT config.mc_init_tick_limit
#define TICK_LIMIT_MC_INIT_DEFAULT 98

#define MC_TICK_CHECK ( world.tick_usage > CURRENT_TICKLIMIT ? pause() : 0 )

// For multi-step subsystems that want to split their tick into multiple parts.
#define MC_SPLIT_TICK_INIT(phase_count) var/original_tick_limit = CURRENT_TICKLIMIT; var/split_tick_phases = ##phase_count
#define MC_SPLIT_TICK \
    if(split_tick_phases > 1){\
        CURRENT_TICKLIMIT = ((original_tick_limit - world.tick_usage) / split_tick_phases) + world.tick_usage;\
        --split_tick_phases;\
    } else {\
        CURRENT_TICKLIMIT = original_tick_limit;\
    }

// Used to smooth out costs to try and avoid oscillation.
#define MC_AVERAGE_FAST(average, current) (0.7 * (average) + 0.3 * (current))
#define MC_AVERAGE(average, current) (0.8 * (average) + 0.2 * (current))
#define MC_AVERAGE_SLOW(average, current) (0.9 * (average) + 0.1 * (current))

#define MC_AVG_FAST_UP_SLOW_DOWN(average, current) (average > current ? MC_AVERAGE_SLOW(average, current) : MC_AVERAGE_FAST(average, current))
#define MC_AVG_SLOW_UP_FAST_DOWN(average, current) (average < current ? MC_AVERAGE_SLOW(average, current) : MC_AVERAGE_FAST(average, current))

#define NEW_SS_GLOBAL(varname) if(varname != src){if(istype(varname)){Recover();qdel(varname);}varname = src;}


//SubSystem flags (Please design any new flags so that the default is off, to make adding flags to subsystems easier)

//subsystem should fire during pre-game lobby.
#define SS_FIRE_IN_LOBBY 1

//subsystem does not initialize.
#define SS_NO_INIT 2

//subsystem does not fire.
//	(like can_fire = 0, but keeps it from getting added to the processing subsystems list)
//	(Requires a MC restart to change)
#define SS_NO_FIRE 4

//subsystem only runs on spare cpu (after all non-background subsystems have ran that tick)
//	SS_BACKGROUND has its own priority bracket
#define SS_BACKGROUND 8

//subsystem does not tick check, and should not run unless there is enough time (or its running behind (unless background))
#define SS_NO_TICK_CHECK 16

//Treat wait as a tick count, not DS, run every wait ticks.
//	(also forces it to run first in the tick, above even SS_NO_TICK_CHECK subsystems)
//	(implies SS_FIRE_IN_LOBBY because of how it works)
//	(overrides SS_BACKGROUND)
//	This is designed for basically anything that works as a mini-mc (like SStimer)
#define SS_TICKER 32

//keep the subsystem's timing on point by firing early if it fired late last fire because of lag
//	ie: if a 20ds subsystem fires say 5 ds late due to lag or what not, its next fire would be in 15ds, not 20ds.
#define SS_KEEP_TIMING 64

//Calculate its next fire after its fired.
//	(IE: if a 5ds wait SS takes 2ds to run, its next fire should be 5ds away, not 3ds like it normally would be)
//	This flag overrides SS_KEEP_TIMING
#define SS_POST_FIRE_TIMING 128

// Don't display in processes panel.
#define SS_NO_DISPLAY 256

//SUBSYSTEM STATES
#define SS_IDLE 0		//aint doing shit.
#define SS_QUEUED 1		//queued to run
#define SS_RUNNING 2	//actively running
#define SS_PAUSED 3		//paused by mc_tick_check
#define SS_SLEEPING 4	//fire() slept.
#define SS_PAUSING 5 	//in the middle of pausing

// Subsystem init-states, used for the initialization MC panel.
#define SS_INITSTATE_NONE 0
#define SS_INITSTATE_STARTED 1
#define SS_INITSTATE_DONE 2

#define SS_PRIORITY_DEFAULT 50