Revert "Make hotspots go out easier. (#29805)" (#30136)

This reverts commit c0acf193a0.

code/__DEFINES/rust.dm

@@ -111,9 +111,6 @@
 /proc/create_hotspot(turf/T, hotspot_temperature, hotspot_volume)
 	return RUSTLIB_CALL(milla_create_hotspot, T, hotspot_temperature, hotspot_volume)
 
-/proc/extinguish_hotspot(turf/T)
-	RUSTLIB_CALL(milla_extinguish_hotspot, T)
-
 /proc/track_pressure_tiles(atom/A, radius)
 	var/turf/T = get_turf(A)
 	if(istype(T))

code/game/turfs/simulated.dm

@@ -75,16 +75,15 @@
 	if(!found)
 		return
 
-	var/datum/milla_safe/quench/milla = new()
+	var/datum/milla_safe/turf_cool/milla = new()
 	milla.invoke_async(src, delta, divisor)
 
-/datum/milla_safe/quench
+/datum/milla_safe/turf_cool
 
-/datum/milla_safe/quench/on_run(turf/T, delta, divisor)
+/datum/milla_safe/turf_cool/on_run(turf/T, delta, divisor)
 	var/datum/gas_mixture/air = get_turf_air(T)
 	air.set_temperature(max(min(air.temperature()-delta * divisor,air.temperature() / divisor), TCMB))
 	air.react()
-	extinguish_hotspot(T)
 
 /*
  * Makes a turf slippery using the given parameters

rust/src/milla/api.rs

@@ -594,49 +594,6 @@ pub(crate) fn internal_create_hotspot(
     Ok(())
 }
 
-/// BYOND API for a heat source creating a hotspot on a tile.
-#[byondapi::bind]
-fn milla_extinguish_hotspot(
-    turf: ByondValue,
-) -> eyre::Result<ByondValue> {
-    logging::setup_panic_handler();
-    let (x, y, z) = byond_xyz(&turf)?.coordinates();
-
-    internal_extinguish_hotspot(
-        x as i32 - 1,
-        y as i32 - 1,
-        z as i32 - 1,
-    )?;
-    Ok(ByondValue::null())
-}
-
-/// Rust version of a heat source creating a hotspot.
-pub(crate) fn internal_extinguish_hotspot(
-    x: i32,
-    y: i32,
-    z: i32,
-) -> Result<()> {
-    let buffers = BUFFERS.get().ok_or(eyre!("BUFFERS not initialized."))?;
-    let active = buffers.get_active().read().unwrap();
-    let maybe_z_level = active.0[z as usize].try_write();
-    if maybe_z_level.is_err() {
-        return Err(eyre!(
-            "Tried to write during asynchronous, read-only atmos. Use a /datum/milla_safe/..."
-        ));
-    }
-    let mut z_level = maybe_z_level.unwrap();
-    let tile = z_level.get_tile_mut(ZLevel::maybe_get_index(x, y).ok_or(eyre!(
-        "Bad coordinates ({}, {}, {})",
-        x + 1,
-        y + 1,
-        z + 1
-    ))?);
-
-    tile.hotspot_temperature = 0.0;
-    tile.hotspot_volume = 0.0;
-    Ok(())
-}
-
 /// BYOND API for tracking the pressure of all nearby tiles next tick.
 #[byondapi::bind]
 fn milla_track_pressure_tiles(

rust/src/milla/constants.rs

@@ -204,7 +204,3 @@ pub(crate) const BYOND_WIND_MULTIPLIER: f32 = 0.5;
 /// The smallest temperature allowed for the purpose of caluclating pressure.
 /// Prevents weirdness from absolute-zero gas having no pressure at all.
 pub(crate) const MINIMUM_TEMPERATURE_FOR_PRESSURE: f32 = 1.0;
-
-/// How much of the excess temperature in a hotspot should be lost to the tile every tick.
-/// Makes hotspots die out if they're not burning fast enough.
-pub(crate) const HOTSPOT_CONDUCTION: f32 = 0.1;

rust/src/milla/simulate.rs

@@ -637,22 +637,14 @@ pub(crate) fn react(my_next_tile: &mut Tile, hotspot_step: bool) {
         // THEN we can add in the new thermal energy.
         thermal_energy += PLASMA_BURN_ENERGY * plasma_burnt;
         // Recalculate temperature for any subsequent reactions.
-        cached_temperature = thermal_energy / cached_heat_capacity;
+        // (or we would, but this is the last reaction)
+        //cached_temperature = thermal_energy / cached_heat_capacity;
 
         my_next_tile.fuel_burnt += plasma_burnt;
     }
 
     if hotspot_step {
-        // Conduct some temperature to the tile.
-        let mut conduction = 0.0;
-        let tile_temperature = my_next_tile.temperature();
-        let temperature_difference = cached_temperature - tile_temperature;
-        if temperature_difference > 0.0 {
-            let excess_thermal_energy = temperature_difference * cached_heat_capacity;
-            conduction  = excess_thermal_energy * HOTSPOT_CONDUCTION;
-            my_next_tile.thermal_energy += conduction;
-        }
-        adjust_hotspot(my_next_tile, thermal_energy - initial_thermal_energy - conduction);
+        adjust_hotspot(my_next_tile, thermal_energy - initial_thermal_energy);
     } else {
         my_next_tile.thermal_energy += thermal_energy - initial_thermal_energy;
     }