Weather Commands System

A GM command to control weather effects across facets in ModernUO.

Server Command (ModernUO)

Usage

[SetFacetWeather <type> [density]

Parameters

Parameter	Required	Description
type	Yes	Weather type: rain, storm, snow, or clear
density	No	Intensity of weather effect (0-70, default: 40)

Weather Types

Type	Effect	Description
rain	Blue rain drops	Standard rainfall
storm	Blue rain + thunder	Fierce storm with thunder sounds
snow	White snowflakes	Snowfall with wind sounds
clear	No weather	Clears all weather effects

Examples

[SetFacetWeather rain          -- Normal rain (density 40)
[SetFacetWeather rain 70       -- Heavy rain (max density)
[SetFacetWeather rain 20       -- Light rain
[SetFacetWeather storm         -- Storm with thunder
[SetFacetWeather snow          -- Snowfall
[SetFacetWeather clear         -- Clear skies

Access Level

• GameMaster or higher required

Behavior

• Affects all players currently on the same facet/map as the GM
• Weather is a client-side visual effect only
• Weather will fade after ~30 seconds (client-controlled timer)
• New players joining after the command won't see the weather
• Does not persist across server restarts

ClassicUO Client Fix

The default ClassicUO client renders rain as dark/black due to shader processing. A fix was applied to make rain visible:

File Modified

ClassicUO/src/ClassicUO.Client/Game/Weather.cs

Change

// Original (dark/invisible rain)
SolidColorTextureCache.GetTexture(Color.Blue)

// Fixed (visible blue rain)
SolidColorTextureCache.GetTexture(Color.DodgerBlue)

Rebuild Required

After modifying Weather.cs, rebuild ClassicUO for changes to take effect.

Technical Details

Network Packet

The command uses packet 0x65 (Weather) with format:

Byte 0: 0x65 (packet ID)
Byte 1: Type (0=rain, 1=storm, 2=snow, 0xFE=clear)
Byte 2: Density (0-70)
Byte 3: Temperature

Weather Type Values

WT_RAIN = 0           // Rain
WT_STORM_APPROACH = 1 // Storm with thunder
WT_SNOW = 2           // Snow
WT_STORM_BREWING = 3  // Storm brewing
WT_INVALID_0 = 0xFE   // Clear weather
WT_INVALID_1 = 0xFF   // Clear weather

Files

File	Location	Purpose
WeatherCommands.cs	Projects/UOContent/Commands/	Server command implementation
Weather.cs	ClassicUO/src/ClassicUO.Client/Game/	Client rendering (color fix)

Author

Custom command for ModernUO server with ClassicUO client support.