From bbbfe658704c5245df6daa1b7418003dc9169916 Mon Sep 17 00:00:00 2001
From: Filip Gawin <filip.gawin@zoho.com>
Date: Sun, 3 Jan 2021 00:12:01 +0100
Subject: Port nerf of rain particles from miami

---
 src/core/config.h      |  1 +
 src/render/Weather.cpp | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

(limited to 'src')

diff --git a/src/core/config.h b/src/core/config.h
index 9f4ccd1f..8b18ffef 100644
--- a/src/core/config.h
+++ b/src/core/config.h
@@ -361,6 +361,7 @@ enum Config {
 	#undef NO_ISLAND_LOADING
 	#define PC_PARTICLE
 	#define VC_PED_PORTS // To not process collisions always. But should be tested if that's really beneficial
+	#define VC_RAIN_NERF // Reduces number of rain particles
 #endif
 
 #ifdef LIBRW
diff --git a/src/render/Weather.cpp b/src/render/Weather.cpp
index bf3e51b4..771f85de 100644
--- a/src/render/Weather.cpp
+++ b/src/render/Weather.cpp
@@ -202,6 +202,7 @@ void CWeather::Update(void)
 	}
 
 	// Rain
+#ifndef VC_RAIN_NERF
 	float fNewRain;
 	if (NewWeatherType == WEATHER_RAINY) {
 		// if raining for >1 hour, values: 0, 0.33, 0.66, 0.99, switching every ~16.5s
@@ -223,6 +224,25 @@ void CWeather::Update(void)
 		else
 			Rain = Max(fNewRain, Rain - RAIN_CHANGE_SPEED * CTimer::GetTimeStep());
 	}
+#else
+	float fNewRain;
+	if (NewWeatherType == WEATHER_RAINY) {
+		// if raining for >1 hour, values: 0, 0.33, switching every ~16.5s
+		fNewRain = (((uint16)CTimer::GetTimeInMilliseconds() >> 14) & 1) * 0.33f;
+		if (OldWeatherType != WEATHER_RAINY) {
+			if (InterpolationValue < 0.4f)
+				// if rain has just started (<24 minutes), always 0.5
+				fNewRain = 0.5f;
+			else
+				// if rain is ongoing for >24 minutes, values: 0.25, 0.5, switching every ~16.5s
+				fNewRain = 0.25f + (((uint16)CTimer::GetTimeInMilliseconds() >> 14) & 1) * 0.25f;
+		}
+		fNewRain = Max(fNewRain, 0.5f);
+	}
+	else
+		fNewRain = 0.0f;
+	Rain = fNewRain;
+#endif
 
 	// Clouds
 	if (OldWeatherType != WEATHER_SUNNY)
-- 
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