Reworked the equation so that you gain a constant cooldown reduction per rank

Additionally all spells can now use all 5 spell points now (though the functionality to have spells that don't follow this rule is still there).
The new variable "cooldown_min" defines (in deciseconds) what the cooldown should be if all 5 spell points are used on it.
For example if you had a 100 charge_max and a 60 cooldown_min, every rank used on that spell would reduce charge_max by 10
Specifics of how the cooldown is affected for each spell has been commented in

code/datums/spell.dm

@@ -26,8 +26,9 @@ var/list/spells = typesof(/obj/effect/proc_holder/spell) //needed for the badmin
 	var/range = 7 //the range of the spell; outer radius for aoe spells
 	var/message = "" //whatever it says to the guy affected by it
 	var/selection_type = "view" //can be "range" or "view"
-	var/spell_level = 1 //if a spell can be taken multiple times, this raises
-	var/level_max = 1 //The max possible level_max is 5, but most spells cap lower for balancing reasons
+	var/spell_level = 0 //if a spell can be taken multiple times, this raises
+	var/level_max = 4 //The max possible level_max is 4
+	var/cooldown_min = 0 //This defines what spell quickened four timeshas as a cooldown. Make sure to set this for every spell
 
 	var/overlay = 0
 	var/overlay_icon = 'icons/obj/wizard.dmi'

code/datums/spells/ethereal_jaunt.dm

@@ -8,7 +8,7 @@
 	invocation = "none"
 	invocation_type = "none"
 	range = -1
-	level_max = 3
+	cooldown_min = 100 //50 deciseconds reduction per rank
 	include_user = 1
 	centcom_cancast = 0 //Prevent people from getting to centcom
 

code/datums/spells/horsemask.dm

@@ -10,7 +10,7 @@
 	invocation = "KN'A FTAGHU, PUCK 'BTHNK!"
 	invocation_type = "shout"
 	range = 7
-	level_max = 5
+	cooldown_min = 30 //30 deciseconds reduction per rank
 	selection_type = "range"
 	var/list/compatible_mobs = list(/mob/living/carbon/human, /mob/living/carbon/monkey)
 

code/datums/spells/knock.dm

@@ -8,7 +8,7 @@
 	invocation = "AULIE OXIN FIERA"
 	invocation_type = "whisper"
 	range = 3
-	level_max = 2
+	cooldown_min = 20 //20 deciseconds reduction per rank
 
 /obj/effect/proc_holder/spell/aoe_turf/knock/cast(list/targets)
 	for(var/turf/T in targets)

code/datums/spells/mind_transfer.dm

@@ -8,7 +8,7 @@
 	invocation = "GIN'YU CAPAN"
 	invocation_type = "whisper"
 	range = 1
-	level_max = 3
+	cooldown_min = 200 //100 deciseconds reduction per rank
 	var/list/protected_roles = list("Wizard","Changeling","Cultist") //which roles are immune to the spell
 	var/list/compatible_mobs = list(/mob/living/carbon/human,/mob/living/carbon/monkey) //which types of mobs are affected by the spell. NOTE: change at your own risk
 	var/base_spell_loss_chance = 20 //base probability of the wizard losing a spell in the process

code/datums/spells/wizard.dm

@@ -8,7 +8,7 @@
 	invocation = "FORTI GY AMA"
 	invocation_type = "shout"
 	range = 7
-	level_max = 2
+	cooldown_min = 75 //19 deciseconds reduction per rank
 
 	max_targets = 0
 
@@ -43,6 +43,7 @@
 
 	mutations = list(LASER, HULK)
 	duration = 300
+	cooldown_min = 300 //25 deciseconds reduction per rank
 
 /obj/effect/proc_holder/spell/targeted/inflict_handler/disintegrate
 	name = "Disintegrate"
@@ -54,7 +55,7 @@
 	invocation = "EI NATH"
 	invocation_type = "shout"
 	range = 1
-	level_max = 3
+	cooldown_min = 200 //100 deciseconds reduction per rank
 
 	destroys = "gib_brain"
 
@@ -72,7 +73,7 @@
 	invocation_type = "none"
 	range = -1
 	include_user = 1
-	level_max = 5
+	cooldown_min = 20 //25 deciseconds reduction per rank
 
 	smoke_spread = 2
 	smoke_amt = 10
@@ -86,7 +87,7 @@
 	invocation_type = "shout"
 	range = -1
 	include_user = 1
-	level_max = 4
+	cooldown_min = 200 //50 deciseconds reduction per rank
 
 	emp_heavy = 6
 	emp_light = 10
@@ -102,7 +103,8 @@
 	invocation_type = "none"
 	range = -1
 	include_user = 1
-	level_max = 5
+	cooldown_min = 5 //4 deciseconds reduction per rank
+
 
 	smoke_spread = 1
 	smoke_amt = 10
@@ -123,7 +125,7 @@
 	invocation_type = "shout"
 	range = -1
 	include_user = 1
-	level_max = 3
+	cooldown_min = 200 //100 deciseconds reduction per rank
 
 	smoke_spread = 1
 	smoke_amt = 5
@@ -138,7 +140,7 @@
 	invocation = "TARCOL MINTI ZHERI"
 	invocation_type = "whisper"
 	range = 0
-	level_max = 5
+	cooldown_min = 50 //12 deciseconds reduction per rank
 
 	summon_type = list("/obj/effect/forcefield")
 	summon_lifespan = 300
@@ -196,7 +198,7 @@
 	invocation = "STI KALY"
 	invocation_type = "whisper"
 	message = "\blue Your eyes cry out in pain!"
-	level_max = 5
+	cooldown_min = 50 //12 deciseconds reduction per rank
 
 	starting_spells = list("/obj/effect/proc_holder/spell/targeted/inflict_handler/blind","/obj/effect/proc_holder/spell/targeted/genetic/blind")
 
@@ -219,7 +221,7 @@
 	invocation = "STAUN EI"
 	invocation_type = "shout"
 	amt_stunned = 2//just exists to make sure the statue "catches" them
-	level_max = 4
+	cooldown_min = 100 //125 deciseconds reduction per rank
 
 	summon_type = "/obj/structure/closet/statue"
 
@@ -233,7 +235,7 @@
 	invocation = "ONI SOMA"
 	invocation_type = "shout"
 	range = 20
-	level_max = 3
+	cooldown_min = 20 //10 deciseconds reduction per rank
 
 	proj_icon_state = "fireball"
 	proj_name = "a fireball"

code/game/gamemodes/wizard/spellbook.dm

@@ -162,20 +162,20 @@
 						else
 							aspell.name = initial(aspell.name)
 							aspell.spell_level++
-							aspell.charge_max = initial(aspell.charge_max) / aspell.spell_level
+							aspell.charge_max = round(initial(aspell.charge_max) - aspell.spell_level * (initial(aspell.charge_max) - aspell.cooldown_min)/ aspell.level_max)
 							if(aspell.charge_max < aspell.charge_counter)
 								aspell.charge_counter = aspell.charge_max
 							switch(aspell.spell_level)
-								if(2)
+								if(1)
 									temp = "You have improved [aspell.name] into Efficient [aspell.name]."
 									aspell.name = "Efficient [aspell.name]"
-								if(3)
+								if(2)
 									temp = "You have further improved [aspell.name] into Quickened [aspell.name]."
 									aspell.name = "Quickened [aspell.name]"
-								if(4)
+								if(3)
 									temp = "You have further improved [aspell.name] into Free [aspell.name]."
 									aspell.name = "Free [aspell.name]"
-								if(5)
+								if(4)
 									temp = "You have further improved [aspell.name] into Instant [aspell.name]."
 									aspell.name = "Instant [aspell.name]"
 							if(aspell.spell_level >= aspell.level_max)