//Returns true if the cooldown has run its course, false otherwise
#define COOLDOWN_FINISHED(cd_source, cd_index) (cd_source.cd_index <= world.time)

#define COOLDOWN_TIMELEFT(cd_source, cd_index) (max(0, cd_source.cd_index - world.time))

#define COOLDOWN_START(cd_source, cd_index, cd_time) (cd_source.cd_index = world.time + (cd_time))