🌤️ Project Atmosphere — Dynamic Weather & Climate Engine for Forge 1.20.1

(IN ACTIVE DEVELOPMENT)

(Beta soon available) 

(Read at the end)

Project Atmosphere is a comprehensive weather and climate simulation mod for Minecraft Forge 1.20.1, designed to fully replace vanilla weather with a deeply integrated system spanning temperature, humidity, pressure, and visual phenomena. Built from the ground up with performance and mod compatibility in mind, it simulates realistic biome-based weather patterns and supports visual blending with shaders, Simple Clouds, and external mods like Serene Seasons Extended and Pretty Rain.

🌦️ Core Features

☁️ Dynamic Cloud System (via Simple Clouds)

• Fully integrated with Simple Clouds: Project Atmosphere can dynamically spawn, position, and evolve         cloud formations based on temperature, pressure, and humidity.
• Cloud types are defined per biome and weather condition.
• Supports manual injection, forecast-driven spawning, and cloud persistence.
• Optional fog/cloud merging effects planned for extended shader support.

🌡️ Realistic Temperature Engine

• Biome-aware, season-driven temperature calculations.
• Integrates directly with Serene Seasons and Serene Seasons Extended.
• Temperatures are interpolated every 50 ticks (10 minutes), forming sinusoidal day curves.
• Precomputed min/max values per biome per day, including support for:
  • Desert day–night extremes
  • Cold stability in frozen biomes
  • Tropical moderation
• Asynchronous pre-generation of all data.

🌫️ Humidity & Pressure Systems

• Humidity varies by biome, time, and temperature, with support for rainfall feedback.
• Pressure is tracked per biome and used to determine:
  • Cloud build-up
  • Storm potential
  • Fog density
• Pressure and humidity influence rain likelihood, fog intensity, and cloud behavior.

📊 Forecast System

• Project Atmosphere precomputes a 7-day forecast for:
  • Temperature (min/max)
  • Humidity
  • Pressure
  • Wind
  • Storms
• Forecasts are saved in JSON and loaded asynchronously per biome.
• Used internally by cloud and fog systems to simulate evolving weather fronts.

🌪️ Weather Variability Modules

SpikeManager

• Injects heatwaves, cold drops, and barometric anomalies.
• Configurable intensity and frequency per biome group.

VariationGenerator

• Introduces natural fluctuations to avoid static weather.
• Makes every day feel unique without breaking seasonal patterns.

🌁 Visual & Atmospheric Effects

• Dynamic fog calculated based on:
  • Temperature vs dew point
  • Humidity levels
  • Time of day and biome type
• Future support for:
  • Shader-linked fog density (with Complementary or Iris) (With simple clouds)
  • Cloud–fog blending layers

🔁 Compatibility & Mod Integration

✅ Serene Seasons – used for base seasonal temperature logic
✅ Simple Clouds – used for dynamic cloud rendering and biome/cloud bindings
✅ Pretty Rain – compatible with extended rain visual effects
✅Tough As Nail – optional integration for temperature
✅Legendary Survival Overhaul – optional integration for temperature
✅ Serene Seasons Extended – supports custom biomes and expanded seasonal cycles

🔜 Farmer’s Delight – future integration for crop hydration, rain/drought impact
🔜 Create – planned support for overheating and freezing effects on machines

🧱 Architecture & Performance

• Async-first design: all heavy calculations (forecasting, interpolation, storage) run off-thread.
• Uses a chunk-aware manager system for precise per-biome effects.
• Built to support zero-tick-impact on servers.
• Modular architecture for third-party mod devs to plug into forecasts and weather logic.

🔧 Developer Tools

• /weatherdebug and /forecast commands to:
  • View forecast by biome
  • Force weather overrides
  • Debug cloud spawn state
• API hooks available to read from:
  • to be implemented.... DM me if you're interested

🗺️ Current & Upcoming Modules

✅  🌬️ Wind Simulation – impacts cloud direction, particles, and future projectile drift

✅ ❄️ Snow Accumulation – implemented

• Snow builds up dynamically based on real temperature, not just biome/weather tags
• Melts gradually with heat, sun exposure, or rain
• Works per block and blends with terrain naturally

🔜 🌾 Crop Health – planned: affected by drought, overwatering, or extreme heat
🔜 🧊 Freezing Logic – items, blocks, fluids, and entities react to extreme cold
🔜 
🔜 ☔ Rain Quality System – supports soil saturation, evaporation, and visual rainfall depth

⚙️ Requirements

• Minecraft Forge 1.20.1
  • Serene Seasons
  • Simple Clouds
  • Pretty Rain
  • Serene Seasons Extended Fix

• 💬 Notes
• Project Atmosphere aims to be the climate simulation backbone for realism-based modpacks. Whether you want immersive visuals, dynamic weather behaviors, or interactive systems for crops and machines, Atmosphere provides the infrastructure to simulate it — asynchronously, modularly, and with zero server-side lag.

The only reason Project Atmosphere isn't in beta yet is because a few core features are still planned before the grand release.