Adds smooth movement/atom gliding, buffs everyone's speed by 2x. (#21662)

Revives https://github.com/Aurorastation/Aurora.3/pull/17215 with the
needed species changes.

As I said last time this was tried, the key issue is that our walkspeed
is a lot lower than any other server's. Even if we add atom gliding as
is, it would just look like gliding through molasses and would give you
motion sickness, because it takes a half-second to finish a glide to
another tile. Meaning that to compensate the movement speed has now been
significantly buffed for everyone. Yes, even dionae, G2, simple mobs,
everyone.

As compensation, m'sai/bishop/unathi sprint were especially nerfed
because otherwise they'd go lightspeed.



https://github.com/user-attachments/assets/7ba07389-b874-4a7d-8dd5-b5d3bfe611e4

---------

Signed-off-by: Matt Atlas <mattiathebest2000@hotmail.it>
Co-authored-by: Matt Atlas <liermattia@gmail.com>
Co-authored-by: VMSolidus <evilexecutive@gmail.com>
Co-authored-by: Batrachophreno <Batrochophreno@gmail.com>

code/modules/mob/living/carbon/human/species/outsider/undead.dm

@@ -257,7 +257,7 @@
 	tail = "tajtail"
 	tail_animation = 'icons/mob/species/tajaran/tail.dmi'
 
-	slowdown = -1
+	slowdown = -0.4
 	brute_mod = 1.2
 	fall_mod = 0.5
 
@@ -383,7 +383,7 @@
 
 	stamina = 80
 	sprint_speed_factor = 1.2
-	slowdown = -2
+	slowdown = -0.6
 	standing_jump_range = 5
 	natural_climbing = TRUE
 

code/modules/mob/living/carbon/human/species/station/golem.dm

@@ -320,7 +320,7 @@ GLOBAL_LIST_INIT(golem_types, list(
 
 	bodytype = "Human"
 
-	slowdown = -2
+	slowdown = -0.6
 
 	brute_mod = 1.5
 	burn_mod = 3
@@ -345,7 +345,7 @@ GLOBAL_LIST_INIT(golem_types, list(
 	icobase = 'icons/mob/human_races/golem/r_cardboard.dmi'
 	deform = 'icons/mob/human_races/golem/r_cardboard.dmi'
 
-	slowdown = -1
+	slowdown = -0.3
 
 	brute_mod = 1.5
 	burn_mod = 3
@@ -656,7 +656,7 @@ GLOBAL_LIST_INIT(golem_types, list(
 
 	brute_mod = 1.2
 	burn_mod = 1
-	slowdown = -2
+	slowdown = -0.8
 
 	meat_type = /obj/item/ore/glass
 
@@ -711,7 +711,7 @@ GLOBAL_LIST_INIT(golem_types, list(
 
 	brute_mod = 1.2
 	burn_mod = 1.3
-	slowdown = -1
+	slowdown = -0.3
 
 	meat_type = /obj/item/stack/material/plastic
 

code/modules/mob/living/carbon/human/species/station/ipc/ipc_subspecies.dm

@@ -584,7 +584,7 @@
 	eyes = "zenghu_eyes"
 	brute_mod = 1.5
 
-	slowdown = -0.8
+	slowdown = -0.6
 	sprint_speed_factor = 0.6
 	sprint_cost_factor = 2
 	move_charge_factor = 2

code/modules/mob/living/carbon/human/species/station/monkey.dm

@@ -200,5 +200,5 @@
 	brute_mod = 0.8
 	burn_mod = 2
 	fall_mod = 0
-	slowdown = -1
+	slowdown = -0.3
 

code/modules/mob/living/carbon/human/species/station/tajara/tajara.dm

@@ -25,7 +25,7 @@
 		/singleton/maneuver/leap/tajara
 	)
 	darksight = 8
-	slowdown = -1
+	slowdown = -0.4
 
 	brute_mod = 1.2
 	fall_mod = 0.5

code/modules/mob/living/carbon/human/species/station/tajara/tajaran_subspecies.dm

@@ -12,8 +12,8 @@
 
 	secondary_langs = list(LANGUAGE_SIIK_TAJR, LANGUAGE_DELVAHII)
 
-	slowdown = -0.8 //As opposed to -1 for Base tajara
-	sprint_speed_factor = 0.55 // As opposed to 0.65
+	slowdown = -0.2
+	sprint_speed_factor = 0.55
 	standing_jump_range = 2
 	stamina = 100 // As opposed to 90
 	brute_mod = 1.1 // Less Brute Damage
@@ -57,8 +57,8 @@
 	worked as hunters, later becoming warriors and soldiers as civilization developed."
 	species_height = HEIGHT_CLASS_AVERAGE
 
-	slowdown = -1.2 //As opposed to -1 for Base tajara
-	sprint_speed_factor = 0.75 // As opposed to 0.65
+	slowdown = -0.6
+	sprint_speed_factor = 0.75
 	standing_jump_range = 3
 	stamina = 80 // As opposed to 90
 	brute_mod = 1.3 // More Brute Damage

code/modules/mob/living/carbon/human/species/station/unathi/unathi.dm

@@ -46,8 +46,8 @@
 	stamina	=	120			  // Unathi have the shortest but fastest sprint of all
 	stamina_recovery = 5
 
-	sprint_cost_factor = 1.45
-	sprint_speed_factor = 3.2
+	sprint_cost_factor = 1.75
+	sprint_speed_factor = 1.6
 	exhaust_threshold = 65
 	bp_base_systolic = 80 // Default 120
 	bp_base_disatolic = 50 // Default 80

code/modules/mob/living/carbon/human/species/station/vaurca/vaurca_subspecies.dm

@@ -73,7 +73,7 @@
 	icobase = 'icons/mob/human_races/vaurca/r_vaurcabb.dmi'
 	eyes = "vaurca_attendant_eyes"
 
-	slowdown = -0.8
+	slowdown = -0.6
 	brute_mod = 0.9
 	oxy_mod = 1
 	radiation_mod = 0.5