tts_sound_TEMPORARY.dm

// TODO: SS220-TTS Remove this file when upstream `/mob/proc/playsound_local` supports passing `wait` as parameter.
// Copypasted `/mob/proc/playsound_local` method with `wait` support.
/mob/playsound_local(turf/turf_source, soundin, vol as num, vary, frequency, falloff_exponent = SOUND_FALLOFF_EXPONENT, channel = 0, pressure_affected = TRUE, sound/sound_to_use, max_distance, falloff_distance = SOUND_DEFAULT_FALLOFF_DISTANCE, distance_multiplier = 1, use_reverb = TRUE, wait = FALSE)
	if(!wait)
		return ..()

	if(!client || !can_hear())
		return

	if(!sound_to_use)
		sound_to_use = sound(get_sfx(soundin))

	sound_to_use.wait = wait
	sound_to_use.channel = channel || SSsounds.random_available_channel()
	sound_to_use.volume = vol

	if(vary)
		if(frequency)
			sound_to_use.frequency = frequency
		else
			sound_to_use.frequency = get_rand_frequency()

	if(isturf(turf_source))
		var/turf/turf_loc = get_turf(src)

		//sound volume falloff with distance
		var/distance = get_dist(turf_loc, turf_source) * distance_multiplier

		if(max_distance) //If theres no max_distance we're not a 3D sound, so no falloff.
			sound_to_use.volume -= (max(distance - falloff_distance, 0) ** (1 / falloff_exponent)) / ((max(max_distance, distance) - falloff_distance) ** (1 / falloff_exponent)) * sound_to_use.volume
			//https://www.desmos.com/calculator/sqdfl8ipgf

		if(pressure_affected)
			//Atmosphere affects sound
			var/pressure_factor = 1
			var/datum/gas_mixture/hearer_env = turf_loc.return_air()
			var/datum/gas_mixture/source_env = turf_source.return_air()

			if(hearer_env && source_env)
				var/pressure = min(hearer_env.return_pressure(), source_env.return_pressure())
				if(pressure < ONE_ATMOSPHERE)
					pressure_factor = max((pressure - SOUND_MINIMUM_PRESSURE)/(ONE_ATMOSPHERE - SOUND_MINIMUM_PRESSURE), 0)
			else //space
				pressure_factor = 0

			if(distance <= 1)
				pressure_factor = max(pressure_factor, 0.15) //touching the source of the sound

			sound_to_use.volume *= pressure_factor
			//End Atmosphere affecting sound

		if(sound_to_use.volume <= 0)
			return //No sound

		var/dx = turf_source.x - turf_loc.x // Hearing from the right/left
		sound_to_use.x = dx * distance_multiplier
		var/dz = turf_source.y - turf_loc.y // Hearing from infront/behind
		sound_to_use.z = dz * distance_multiplier
		var/dy = (turf_source.z - turf_loc.z) * 5 * distance_multiplier // Hearing from  above / below, multiplied by 5 because we assume height is further along coords.
		sound_to_use.y = dy

		sound_to_use.falloff = max_distance || 1 //use max_distance, else just use 1 as we are a direct sound so falloff isnt relevant.

		// Sounds can't have their own environment. A sound's environment will be:
		// 1. the mob's
		// 2. the area's (defaults to SOUND_ENVRIONMENT_NONE)
		if(sound_environment_override != SOUND_ENVIRONMENT_NONE)
			sound_to_use.environment = sound_environment_override
		else
			var/area/A = get_area(src)
			sound_to_use.environment = A.sound_environment

		if(use_reverb && sound_to_use.environment != SOUND_ENVIRONMENT_NONE) //We have reverb, reset our echo setting
			sound_to_use.echo[3] = -1300 //Room setting, 0 means normal reverb //SKYRAT EDIT CHANGE
			sound_to_use.echo[4] = -1300 //RoomHF setting, 0 means normal reverb. //SKYRAT EDIT CHANGE

	SEND_SOUND(src, sound_to_use)