Weather (XC2)/Calculations

Calculations methods for Weather triggering in 异度神剑 2 and Torna ~ The Golden Country.

Tables

Simple Explanation

Modified data. Some of the values are already calculated in the table for ease of reading.

Location	Weather 1			Weather 2			Weather 3			Weather 4
	Time	Chance	Length	Time	Chance	Length	Time	Chance	Length	Time	Chance	Length
Argentum Trade Guild	雨天			Thunderstorm
	Any	20%	10-30	Any	15%	5-15
C.S.E.V. Maelstrom	Heavy Storm
	Any	10%	5-15
Ancient Ship	Heavy Storm
	Any	110%	5-15
Gormott Province	雨天			Thunderstorm
	Any	20%	10-30	Any	16%	10-30
Kingdom of Uraya				Petal Rain			Crystal Sleet			阴天
				After 19:00	30%	30-90	Any	30%	20-60	Any	10%	30-90
				其它	0%	30-90
Empire of Mor Ardain	阴天			沙尘暴			Geothermal Haze			阴天
	Any	100%	100-300	Any	30%	15-45	Late Night	20%	30-90	Any	10%	30-90
							其它	20%	30-90
Temperantia	阴天			Lightning
	Any	90%	30-90	Any	40%	30-90
Indoline Praetorium	阴天			阴天
	Any	10%	30-90	Any	10%	30-90
Kingdom of Tantal	Snow			以太 Fog						阴天
	Any	105%	15-45	After 19:00	50%	10-30				Any	10%	30-90
				其它	20%	10-30
Leftherian Archipelago	雨天			极光
	Any	30%	30-90	After 19:00	30%	30-90
				其它	0%	30-90
精灵 Crucible Elpys
Cliffs of Morytha	阴天			Thunderstorm
	Any	110%	30-90	Any	10%	30-90
Land of Morytha	雨天
	Any	10%	30-90
World Tree	阴天			Thunderstorm
	Any	110%	30-90	Any	10%	0
First Low Orbit Station
Dreamworld Elysium
Indoline Titan Ship	阴天			雨天			Thunderstorm
	Any	30%	30-90	Any	30%	30-90	Any	30%	30-90
Torna: The Golden Country
Kingdom of Torna	阴天			雨天			极光			阴天
	Any	20%	10-30	Any	20%	10-30	After 19:00	45%	10-30	Any	10%	30-90
							其它	5%	10-30
Gormott	阴天			雨天			Thunderstorm
	Any	20%	10-30	Any	20%	10-30	Any	20%	10-30

Random weather algorithm:

1. Look at Weather 4. If there is none, skip to next step.
   
   Check the current time. Chose the corresponding Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, roll a number from the range indicated in Length.
   
   The result indicates the real-life minutes duration of that weather.
   
2. Look at Weather 3. If there is none, skip to next step.
   
   Check the current time. Chose the corresponding Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, roll a number from the range indicated in Length.
   
   The result indicates the real-life minutes duration of that weather.
   
3. Look at Weather 2. If there is none, skip to next step.
   
   Check the current time. Chose the corresponding Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, roll a number from the range indicated in Length.
   
   The result indicates the real-life minutes duration of that weather.
   
4. Look at Weather 1. If there is none, skip to next step.
   
   Check the current time. Chose the corresponding Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, roll a number from the range indicated in Length.
   
   The result indicates the real-life minutes duration of that weather.
   
5. If all of the above fail to apply, apply weather "Fair".

Detailed Explanation

Original data. Displays exact values and the steps the algorithm takes to calculate results.

Location	Weather 1			Weather 2			Weather 3			Weather 4
	Chance	Time	Length	Chance	Time	Length	Chance	Time	Length	Chance	Time	Length
Argentum Trade Guild	雨天			Thunderstorm
	10	Any	2	5	Any	1
C.S.E.V. Maelstrom	Heavy Storm
	0	Any	10
Ancient Ship	Heavy Storm
	100	Any	10
Gormott Province	雨天			Thunderstorm
	10	Any	2	6	Any	2
Kingdom of Uraya				Petal Rain			Crystal Sleet			阴天
				0	After 19:00	6	20	Any	4	0	Any	6
Empire of Mor Ardain	阴天			沙尘暴			Geothermal Haze			阴天
	90	Any	20	20	Any	3	10	Late 夜间, Any	6	0	Any	6
Temperantia	阴天			Lightning
	80	Any	6	30	Any	6
Indoline Praetorium	阴天			阴天
	0	Any	6	0	Any	6
Kingdom of Tantal	Snow			以太 Fog						阴天
	95	Any	3	10	Any, After 19:00	2				0	Any	6
Leftherian Archipelago	雨天			极光
	20	Any	6	0	After 19:00	6
精灵 Crucible Elpys
Cliffs of Morytha	阴天			Thunderstorm
	100	Any	6	0	Any	6
Land of Morytha	雨天
	0	Any	6
World Tree	阴天			Thunderstorm
	100	Any	6	0	Any	0
First Low Orbit Station
Dreamworld Elysium
Indoline Titan Ship	阴天			雨天			Thunderstorm
	20	Any	6	20	Any	6	20	Any	6
Torna: The Golden Country
Kingdom of Torna	阴天			雨天			极光			阴天
	10	Any	2	10	Any	2	5	After 19:00	2	0	Any	6
Gormott	阴天			雨天			Thunderstorm
	10	Any	2	10	Any	2	10	Any	2

Random weather algorithm:

1. Look at Weather 4. If there is none, skip to next step.
   
   Check the current time. If it falls under Time, add 10 to Chance.
   
   Check the current hour. If it is 19:00 or after, and Time contains After 19:00, then add 30 to Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, calculate duration.
   
   Roll a number between 5 and 15. Multiply Length by this number. The result indicates the real-life minutes duration of that weather.
   
2. Look at Weather 3. If there is none, skip to next step.
   
   Check the current time. If it falls under Time, add 10 to Chance.
   
   Check the current hour. If it is 19:00 or after, and Time contains After 19:00, then add 30 to Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, calculate duration.
   
   Roll a number between 5 and 15. Multiply Length by this number. The result indicates the real-life minutes duration of that weather.
   
3. Look at Weather 2. If there is none, skip to next step.
   
   Check the current time. If it falls under Time, add 10 to Chance.
   
   Check the current hour. If it is 19:00 or after, and Time contains After 19:00, then add 30 to Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, calculate duration.
   
   Roll a number between 5 and 15. Multiply Length by this number. The result indicates the real-life minutes duration of that weather.
   
4. Look at Weather 1. If there is none, skip to next step.
   
   Check the current time. If it falls under Time, add 10 to Chance.
   
   Check the current hour. If it is 19:00 or after, and Time contains After 19:00, then add 30 to Chance.
   
   Roll a number from 0-100. If the number is less than Chance, apply weather.
   If weather is applied, calculate duration.
   
   Roll a number between 5 and 15. Multiply Length by this number. The result indicates the real-life minutes duration of that weather.
   
5. If all of the above fail to apply, apply weather "Fair".