Merge pull request #389 from Nick007J/master

Weather
2024-11-26 11:04:15 +01:00 · 2020-04-09 12:30:02 +02:00 · 2020-04-09 12:30:02 +02:00 · ee057cb427
commit ee057cb427
parent 26fb53472e 6b06ee21ad
4 changed files with 488 additions and 7 deletions
--- a/src/core/re3.cpp
+++ b/src/core/re3.cpp
@ -458,7 +458,7 @@ void re3_debug(const char *format, ...)
 	vsprintf_s(re3_buff, re3_buffsize, format, va);
 	va_end(va);

-//	printf("%s", re3_buff);
+	printf("%s", re3_buff);
 	CDebug::DebugAddText(re3_buff);
 }

--- a/src/render/Timecycle.h
+++ b/src/render/Timecycle.h
@ -136,6 +136,7 @@ public:
 	static int GetFogRed(void) { return m_nCurrentFogColourRed; }
 	static int GetFogGreen(void) { return m_nCurrentFogColourGreen; }
 	static int GetFogBlue(void) { return m_nCurrentFogColourBlue; }
+	static int GetFogReduction(void) { return m_FogReduction; }

 	static void Initialise(void);
 	static void Update(void);
--- a/src/render/Weather.cpp
+++ b/src/render/Weather.cpp
@ -2,6 +2,22 @@
 #include "patcher.h"
 #include "Weather.h"

+#include "Camera.h"
+#include "Clock.h"
+#include "CutsceneMgr.h"
+#include "DMAudio.h"
+#include "General.h"
+#include "Pad.h"
+#include "Particle.h"
+#include "RenderBuffer.h"
+#include "Stats.h"
+#include "Shadows.h"
+#include "Timecycle.h"
+#include "Timer.h"
+#include "Vehicle.h"
+#include "World.h"
+#include "ZoneCull.h"
+
 int32 &CWeather::SoundHandle = *(int32*)0x5FFBC4;

 int32 &CWeather::WeatherTypeInList = *(int32*)0x8F626C;
@ -32,13 +48,203 @@ int16 &CWeather::Stored_OldWeatherType = *(int16*)0x95CC68;
 int16 &CWeather::Stored_NewWeatherType = *(int16*)0x95CCAE;
 float &CWeather::Stored_Rain = *(float*)0x885B4C;

-WRAPPER void CWeather::RenderRainStreaks(void) { EAXJMP(0x524550); }
-WRAPPER void CWeather::Update(void) { EAXJMP(0x522C10); }
-WRAPPER void CWeather::Init(void) { EAXJMP(0x522BA0); }
+tRainStreak Streaks[NUM_RAIN_STREAKS];

-void CWeather::ReleaseWeather()
+const int16 WeatherTypesList[] = {
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_CLOUDY, WEATHER_CLOUDY, WEATHER_RAINY, WEATHER_RAINY,
+	WEATHER_CLOUDY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_CLOUDY, WEATHER_FOGGY, WEATHER_FOGGY, WEATHER_CLOUDY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_CLOUDY, WEATHER_CLOUDY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_CLOUDY, WEATHER_CLOUDY, WEATHER_RAINY, WEATHER_RAINY,
+	WEATHER_CLOUDY, WEATHER_RAINY, WEATHER_CLOUDY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_FOGGY, WEATHER_FOGGY, WEATHER_SUNNY,
+	WEATHER_SUNNY, WEATHER_SUNNY, WEATHER_RAINY, WEATHER_CLOUDY,
+};
+
+const float Windiness[] = {
+	0.0f, // WEATHER_SUNNY
+	0.7f, // WEATHER_RAINY
+	1.0f, // WEATHER_CLOUDY
+	0.5f  // WEATHER_FOGGY
+};
+
+#define MIN_TIME_BETWEEN_LIGHTNING_FLASH_CHANGES (50)
+
+#define RAIN_CHANGE_SPEED (0.003f)
+
+#define DROPLETS_LEFT_OFFSET (10.0f)
+#define DROPLETS_RIGHT_OFFSET (10.0f)
+#define DROPLETS_TOP_OFFSET (10.0f)
+#define DROPLETS_BOTTOM_OFFSET (10.0f)
+
+#define STREAK_U (10.0f)
+#define STREAK_V (18.0f)
+#define LARGE_STREAK_COEFFICIENT (1.23f)
+#define STREAK_MIN_DISTANCE (8.0f)
+#define STREAK_MAX_DISTANCE (16.0f)
+
+#define SPLASH_CHECK_RADIUS (7.0f)
+#define SPLASH_OFFSET_RADIUS (2.0f)
+
+#define STREAK_LIFETIME (4.0f)
+#define STREAK_INTEROLATION_TIME (0.3f)
+
+#define RAIN_COLOUR_R (200)
+#define RAIN_COLOUR_G (200)
+#define RAIN_COLOUR_B (256)
+#define RAIN_ALPHA (255)
+
+void CWeather::Init(void)
 {
-	ForcedWeatherType = -1;
+	NewWeatherType = WEATHER_SUNNY;
+	bScriptsForceRain = false;
+	OldWeatherType = WEATHER_RAINY;
+	Stored_StateStored = false;
+	InterpolationValue = 0.0f;
+	WhenToPlayLightningSound = 0;
+	WeatherTypeInList = 0;
+	ForcedWeatherType = WEATHER_RANDOM;
+	SoundHandle = DMAudio.CreateEntity(AUDIOTYPE_WEATHER, (void*)1);
+	if (SoundHandle >= 0)
+		DMAudio.SetEntityStatus(SoundHandle, 1);
+}
+
+void CWeather::Update(void)
+{
+	float fNewInterpolation = CClock::GetMinutes() * 1.0f / 60;
+	if (fNewInterpolation < InterpolationValue) {
+		// new hour
+		OldWeatherType = NewWeatherType;
+		if (ForcedWeatherType >= 0)
+			NewWeatherType = ForcedWeatherType;
+		else {
+			WeatherTypeInList = (WeatherTypeInList + 1) % ARRAYSIZE(WeatherTypesList);
+			NewWeatherType = WeatherTypesList[WeatherTypeInList];
+#ifdef FIX_BUGS
+		}
+		if (NewWeatherType == WEATHER_RAINY)
+			CStats::mmRain += CGeneral::GetRandomNumber() & 7;
+#else
+			if (NewWeatherType == WEATHER_RAINY)
+				CStats::mmRain += CGeneral::GetRandomNumber() & 7;
+		}
+#endif
+	}
+	InterpolationValue = fNewInterpolation;
+	if (CPad::GetPad(1)->GetRightShockJustDown()) {
+		NewWeatherType = (NewWeatherType + 1) % WEATHER_TOTAL;
+		OldWeatherType = NewWeatherType;
+	}
+
+	// Lightning
+	if (NewWeatherType != WEATHER_RAINY || OldWeatherType != WEATHER_RAINY) {
+		LightningFlash = false;
+		LightningBurst = false;
+	}
+	else{
+		if (LightningBurst) {
+			if ((CGeneral::GetRandomNumber() & 255) >= 32) {
+				// 0.875 probability
+				if (CTimer::GetTimeInMilliseconds() - LightningFlashLastChange > MIN_TIME_BETWEEN_LIGHTNING_FLASH_CHANGES) {
+					bool bOldLightningFlash = LightningFlash;
+					LightningFlash = CGeneral::GetRandomTrueFalse();
+					if (LightningFlash != bOldLightningFlash)
+						LightningFlashLastChange = CTimer::GetTimeInMilliseconds();
+				}
+			}
+			else {
+				// 0.125 probability
+				LightningBurst = false;
+				LightningDuration = min(CTimer::GetFrameCounter() - LightningStart, 20);
+				LightningFlash = false;
+				WhenToPlayLightningSound = CTimer::GetTimeInMilliseconds() + 150 * (20 - LightningDuration);
+			}
+		}
+		else {
+			if (CGeneral::GetRandomNumber() >= 200) {
+				// lower probability on PC due to randomness bug
+				LightningFlash = false;
+			}
+			else {
+				LightningBurst = true;
+				LightningStart = CTimer::GetFrameCounter();
+				LightningFlashLastChange = CTimer::GetTimeInMilliseconds();
+				LightningFlash = true;
+			}
+		}
+	}
+	if (WhenToPlayLightningSound && CTimer::GetTimeInMilliseconds() > WhenToPlayLightningSound) {
+		DMAudio.PlayOneShot(SoundHandle, SOUND_LIGHTNING, LightningDuration);
+		CPad::GetPad(0)->StartShake(40 * LightningDuration + 100, 2 * LightningDuration + 80);
+		WhenToPlayLightningSound = 0;
+	}
+
+	// Wet roads
+	if (OldWeatherType == WEATHER_RAINY) {
+		if (NewWeatherType == WEATHER_RAINY)
+			WetRoads = 1.0f;
+		else
+			WetRoads = 1.0f - InterpolationValue;
+	}
+	else {
+		if (NewWeatherType == WEATHER_RAINY)
+			WetRoads = InterpolationValue;
+		else
+			WetRoads = 0.0f;
+	}
+
+	// Rain
+	float fNewRain;
+	if (NewWeatherType == WEATHER_RAINY) {
+		// if raining for >1 hour, values: 0, 0.33, 0.66, 0.99, switching every ~16.5s
+		fNewRain = ((uint16)CTimer::GetTimeInMilliseconds() >> 14) * 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, 0.75, 1.0, switching every ~16.5s
+				fNewRain = 0.25f + ((uint16)CTimer::GetTimeInMilliseconds() >> 14) * 0.25f;
+		}
+	}
+	else
+		fNewRain = 0.0f;
+	if (Rain != fNewRain) { // ok to use comparasion
+		if (Rain < fNewRain)
+			Rain = min(fNewRain, Rain + RAIN_CHANGE_SPEED * CTimer::GetTimeStep());
+		else
+			Rain = max(fNewRain, Rain - RAIN_CHANGE_SPEED * CTimer::GetTimeStep());
+	}
+
+	// Clouds
+	if (OldWeatherType != WEATHER_SUNNY)
+		CloudCoverage = 1.0f - InterpolationValue;
+	else
+		CloudCoverage = 0.0f;
+	if (NewWeatherType != WEATHER_SUNNY)
+		CloudCoverage += InterpolationValue;
+	
+	// Fog
+	if (OldWeatherType == WEATHER_FOGGY)
+		Foggyness = 1.0f - InterpolationValue;
+	else
+		Foggyness = 0.0f;
+	if (NewWeatherType == WEATHER_FOGGY)
+		Foggyness += InterpolationValue;
+	if (OldWeatherType == WEATHER_RAINY && NewWeatherType == WEATHER_SUNNY && InterpolationValue < 0.5f && CClock::GetHours() > 6 && CClock::GetHours() < 21)
+		Rainbow = 1.0f - 4.0f * Abs(InterpolationValue - 0.25f) / 4.0f;
+	else
+		Rainbow = 0.0f;
+	Wind = InterpolationValue * Windiness[NewWeatherType] + (1.0f - InterpolationValue) * Windiness[OldWeatherType];
+	AddRain();
 }

 void CWeather::ForceWeather(int16 weather)
@ -53,6 +259,258 @@ void CWeather::ForceWeatherNow(int16 weather)
 	ForcedWeatherType = weather;
 }

+void CWeather::ReleaseWeather()
+{
+	ForcedWeatherType = -1;
+}
+
+void CWeather::AddRain()
+{
+	if (CCullZones::CamNoRain() || CCullZones::PlayerNoRain())
+		return;
+	if (TheCamera.GetLookingLRBFirstPerson()) {
+		CVehicle* pVehicle = FindPlayerVehicle();
+		if (pVehicle && pVehicle->CarHasRoof()) {
+			CParticle::RemovePSystem(PARTICLE_RAINDROP_2D);
+			return;
+		}
+	}
+	if (Rain <= 0.1f)
+		return;
+	static RwRGBA colour;
+	float screen_width = RsGlobal.width;
+	float screen_height = RsGlobal.height;
+	int cur_frame = (int)(3 * Rain) & 3;
+	int num_drops = (int)(2 * Rain) + 2;
+	static int STATIC_RAIN_ANGLE = -45;
+	static int count = 1500;
+	static int add_angle = 1;
+	if (--count == 0) {
+		count = 1;
+		if (add_angle) {
+			STATIC_RAIN_ANGLE += 12;
+			if (STATIC_RAIN_ANGLE > 45) {
+				count = 1500;
+				add_angle = !add_angle;
+			}
+		}
+		else {
+			STATIC_RAIN_ANGLE -= 12;
+			if (STATIC_RAIN_ANGLE < -45) {
+				count = 1500;
+				add_angle = !add_angle;
+			}
+		}
+	}
+	float rain_angle = DEGTORAD(STATIC_RAIN_ANGLE + ((STATIC_RAIN_ANGLE < 0) ? 360 : 0));
+	float sin_angle = Sin(rain_angle);
+	float cos_angle = Cos(rain_angle);
+	float base_x = 0.0f * cos_angle - 1.0f * sin_angle;
+	float base_y = 1.0f * cos_angle + 0.0f * sin_angle;
+	CVector xpos(0.0f, 0.0f, 0.0f);
+	for (int i = 0; i < 2 * num_drops; i++) {
+		CVector dir;
+		dir.x = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_x) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.y = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_y) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.z = 0;
+		CParticle::AddParticle(PARTICLE_RAINDROP_2D, xpos, dir, nil, CGeneral::GetRandomNumberInRange(0.5f, 0.9f),
+			colour, 0, rain_angle + CGeneral::GetRandomNumberInRange(-10, 10), cur_frame);
+		xpos.x += screen_width / (2 * num_drops);
+		xpos.x += CGeneral::GetRandomNumberInRange(-25.0f, 25.0f);
+	}
+	CVector ypos(0.0f, 0.0f, 0.0f);
+	for (int i = 0; i < num_drops; i++) {
+		CVector dir;
+		dir.x = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_x) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.y = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_y) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.z = 0;
+		CParticle::AddParticle(PARTICLE_RAINDROP_2D, ypos, dir, nil, CGeneral::GetRandomNumberInRange(0.5f, 0.9f),
+			colour, 0, rain_angle + CGeneral::GetRandomNumberInRange(-10, 10), cur_frame);
+		ypos.y += screen_width / num_drops;
+		ypos.y += CGeneral::GetRandomNumberInRange(-25.0f, 25.0f);
+	}
+	CVector ypos2(0.0f, 0.0f, 0.0f);
+	for (int i = 0; i < num_drops; i++) {
+		CVector dir;
+		dir.x = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_x) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.y = (CGeneral::GetRandomNumberInRange(-0.5f, 0.5f) + base_y) * CGeneral::GetRandomNumberInRange(10.0f, 25.0f);
+		dir.z = 0;
+		CParticle::AddParticle(PARTICLE_RAINDROP_2D, ypos2, dir, nil, CGeneral::GetRandomNumberInRange(0.5f, 0.9f),
+			colour, 0, rain_angle + CGeneral::GetRandomNumberInRange(-10, 10), cur_frame);
+		ypos2.y += screen_width / num_drops;
+		ypos2.y += CGeneral::GetRandomNumberInRange(-25.0f, 25.0f);
+	}
+	for (int i = 0; i < num_drops; i++) {
+		CVector pos;
+		pos.x = CGeneral::GetRandomNumberInRange(DROPLETS_LEFT_OFFSET, screen_width - DROPLETS_RIGHT_OFFSET);
+		pos.y = CGeneral::GetRandomNumberInRange(DROPLETS_TOP_OFFSET, screen_height - DROPLETS_TOP_OFFSET);
+		pos.z = 0.0f;
+		CParticle::AddParticle(PARTICLE_RAINDROP_2D, pos, CVector(0.0f, 0.0f, 0.0f), nil, CGeneral::GetRandomNumberInRange(0.5f, 0.9f),
+			colour, CGeneral::GetRandomNumberInRange(-10, 10), 360 - rain_angle + CGeneral::GetRandomNumberInRange(-30, 30), cur_frame, 0);
+	}
+	int num_splash_attempts = (int)(3 * Rain) + 1;
+	int num_splashes = (int)(3 * Rain) + 4;
+	CVector splash_points[4];
+	splash_points[0] = CVector(-RwCameraGetViewWindow(TheCamera.m_pRwCamera)->x, RwCameraGetViewWindow(TheCamera.m_pRwCamera)->y, 1.0f) *
+		RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) / (RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) * *(CVector2D*)RwCameraGetViewWindow(TheCamera.m_pRwCamera)).Magnitude();
+	splash_points[1] = CVector(RwCameraGetViewWindow(TheCamera.m_pRwCamera)->x, RwCameraGetViewWindow(TheCamera.m_pRwCamera)->y, 1.0f) *
+		RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) / (RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) * *(CVector2D*)RwCameraGetViewWindow(TheCamera.m_pRwCamera)).Magnitude();
+	splash_points[2] = 4.0f * CVector(-RwCameraGetViewWindow(TheCamera.m_pRwCamera)->x, RwCameraGetViewWindow(TheCamera.m_pRwCamera)->y, 1.0f) *
+		RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) / (RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) * *(CVector2D*)RwCameraGetViewWindow(TheCamera.m_pRwCamera)).Magnitude();
+	splash_points[3] = 4.0f * CVector(RwCameraGetViewWindow(TheCamera.m_pRwCamera)->x, RwCameraGetViewWindow(TheCamera.m_pRwCamera)->y, 1.0f) *
+		RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) / (RwCameraGetFarClipPlane(TheCamera.m_pRwCamera) * *(CVector2D*)RwCameraGetViewWindow(TheCamera.m_pRwCamera)).Magnitude();
+	RwV3dTransformPoints((RwV3d*)splash_points, (RwV3d*)splash_points, 4, RwFrameGetMatrix(RwCameraGetFrame(TheCamera.m_pRwCamera)));
+	CVector fp = (splash_points[0] + splash_points[1] + splash_points[2] + splash_points[3]) / 4;
+	for (int i = 0; i < num_splash_attempts; i++) {
+		CColPoint point;
+		CEntity* entity;
+		CVector np = fp + CVector(CGeneral::GetRandomNumberInRange(-SPLASH_CHECK_RADIUS, SPLASH_CHECK_RADIUS), CGeneral::GetRandomNumberInRange(-SPLASH_CHECK_RADIUS, SPLASH_CHECK_RADIUS), 0.0f);
+		if (CWorld::ProcessVerticalLine(np + CVector(0.0f, 0.0f, 40.0f), -40.0f, point, entity, true, false, false, false, true, false, nil)) {
+			for (int j = 0; j < num_splashes; j++)
+				CParticle::AddParticle((CGeneral::GetRandomTrueFalse() ? PARTICLE_RAIN_SPLASH : PARTICLE_RAIN_SPLASHUP),
+					CVector(
+						np.x + CGeneral::GetRandomNumberInRange(-SPLASH_OFFSET_RADIUS, SPLASH_OFFSET_RADIUS),
+						np.y + CGeneral::GetRandomNumberInRange(-SPLASH_OFFSET_RADIUS, SPLASH_OFFSET_RADIUS),
+						point.point.z + 0.1f),
+					CVector(0.0f, 0.0f, 0.0f), nil, 0.0f, colour);
+		}
+	}
+}
+
+void RenderOneRainStreak(CVector pos, CVector unused, int intensity, bool scale, float distance)
+{
+	static float RandomTex;
+	static float RandomTexX;
+	static float RandomTexY;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 0] = TempBufferVerticesStored + 0;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 1] = TempBufferVerticesStored + 2;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 2] = TempBufferVerticesStored + 1;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 3] = TempBufferVerticesStored + 0;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 4] = TempBufferVerticesStored + 3;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 5] = TempBufferVerticesStored + 2;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 6] = TempBufferVerticesStored + 1;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 7] = TempBufferVerticesStored + 2;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 8] = TempBufferVerticesStored + 4;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 9] = TempBufferVerticesStored + 2;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 10] = TempBufferVerticesStored + 3;
+	TempBufferRenderIndexList[TempBufferIndicesStored + 11] = TempBufferVerticesStored + 4;
+	RwIm3DVertexSetRGBA(&TempBufferRenderVertices[TempBufferVerticesStored + 0], 0, 0, 0, 0);
+	RwIm3DVertexSetPos(&TempBufferRenderVertices[TempBufferVerticesStored + 0], pos.x + 11.0f * TheCamera.GetUp().x, pos.y + 11.0f * TheCamera.GetUp().y, pos.z + 11.0f * TheCamera.GetUp().z);
+	RwIm3DVertexSetRGBA(&TempBufferRenderVertices[TempBufferVerticesStored + 1], 0, 0, 0, 0);
+	RwIm3DVertexSetPos(&TempBufferRenderVertices[TempBufferVerticesStored + 1], pos.x - 9.0f * TheCamera.GetRight().x, pos.y - 9.0f * TheCamera.GetRight().y, pos.z - 9.0f * TheCamera.GetUp().z);
+	RwIm3DVertexSetRGBA(&TempBufferRenderVertices[TempBufferVerticesStored + 2], RAIN_COLOUR_R * intensity / 256, RAIN_COLOUR_G * intensity / 256, RAIN_COLOUR_B * intensity / 256, RAIN_ALPHA);
+	RwIm3DVertexSetPos(&TempBufferRenderVertices[TempBufferVerticesStored + 2], pos.x, pos.y, pos.z);
+	RwIm3DVertexSetRGBA(&TempBufferRenderVertices[TempBufferVerticesStored + 3], 0, 0, 0, 0);
+	RwIm3DVertexSetPos(&TempBufferRenderVertices[TempBufferVerticesStored + 3], pos.x + 9.0f * TheCamera.GetRight().x, pos.y + 9.0f * TheCamera.GetRight().y, pos.z + 9.0f * TheCamera.GetUp().z);
+	RwIm3DVertexSetRGBA(&TempBufferRenderVertices[TempBufferVerticesStored + 4], 0, 0, 0, 0); 
+	RwIm3DVertexSetPos(&TempBufferRenderVertices[TempBufferVerticesStored + 4], pos.x - 11.0f * TheCamera.GetUp().x, pos.y - 11.0f * TheCamera.GetUp().y, pos.z - 11.0f * TheCamera.GetUp().z);
+	float u = STREAK_U;
+	float v = STREAK_V;
+	if (scale) {
+		u *= LARGE_STREAK_COEFFICIENT;
+		v *= LARGE_STREAK_COEFFICIENT;
+	}
+	float distance_coefficient;
+	if (distance < STREAK_MIN_DISTANCE)
+		distance_coefficient = 1.0f;
+	else if (distance > STREAK_MAX_DISTANCE)
+		distance_coefficient = 0.5f;
+	else
+		distance_coefficient = 1.0f - 0.5f * (distance - STREAK_MIN_DISTANCE) / (STREAK_MAX_DISTANCE - STREAK_MIN_DISTANCE);
+	u *= distance_coefficient;
+	v *= distance_coefficient;
+	if (!CTimer::GetIsPaused()) {
+		RandomTex = ((CGeneral::GetRandomNumber() & 255) - 128) * 0.01f;
+		RandomTexX = (CGeneral::GetRandomNumber() & 127) * 0.01f;
+		RandomTexY = (CGeneral::GetRandomNumber() & 127) * 0.01f;
+	}
+	RwIm3DVertexSetU(&TempBufferRenderVertices[TempBufferVerticesStored + 0], 0.5f * u - RandomTex + RandomTexX);
+	RwIm3DVertexSetV(&TempBufferRenderVertices[TempBufferVerticesStored + 0], -v * 0.5f + RandomTexY);
+	RwIm3DVertexSetU(&TempBufferRenderVertices[TempBufferVerticesStored + 1], RandomTexX);
+	RwIm3DVertexSetV(&TempBufferRenderVertices[TempBufferVerticesStored + 1], RandomTexY);
+	RwIm3DVertexSetU(&TempBufferRenderVertices[TempBufferVerticesStored + 2], 0.5f * u + RandomTexX);
+	RwIm3DVertexSetV(&TempBufferRenderVertices[TempBufferVerticesStored + 2], RandomTexY);
+	RwIm3DVertexSetU(&TempBufferRenderVertices[TempBufferVerticesStored + 3], u + RandomTexX);
+	RwIm3DVertexSetV(&TempBufferRenderVertices[TempBufferVerticesStored + 3], RandomTexY);
+	RwIm3DVertexSetU(&TempBufferRenderVertices[TempBufferVerticesStored + 4], 0.5f * u + RandomTex + RandomTexX);
+	RwIm3DVertexSetV(&TempBufferRenderVertices[TempBufferVerticesStored + 5], 0.5f * v + RandomTexY);
+	TempBufferIndicesStored += 12;
+	TempBufferVerticesStored += 5;
+}
+
+void CWeather::RenderRainStreaks(void)
+{
+	if (CTimer::GetIsCodePaused())
+		return;
+	int base_intensity = (64.0f - CTimeCycle::GetFogReduction()) / 64.0f * int(255 * Rain);
+	if (base_intensity == 0)
+		return;
+	TempBufferIndicesStored = 0;
+	TempBufferVerticesStored = 0;
+	for (int i = 0; i < NUM_RAIN_STREAKS; i++) {
+		if (Streaks[i].timer) {
+			float secondsElapsed = (CTimer::GetTimeInMilliseconds() - Streaks[i].timer) / 1024.0f;
+			if (secondsElapsed > STREAK_LIFETIME)
+				Streaks[i].timer = 0;
+			else{
+				int intensity;
+				if (secondsElapsed < STREAK_INTEROLATION_TIME)
+					intensity = base_intensity * 0.5f * secondsElapsed / STREAK_INTEROLATION_TIME;
+				else if (secondsElapsed > (STREAK_LIFETIME - STREAK_INTEROLATION_TIME))
+					intensity = (STREAK_LIFETIME - secondsElapsed) * 0.5f * base_intensity / STREAK_INTEROLATION_TIME;
+				else
+					intensity = base_intensity * 0.5f;
+				CVector dir = Streaks[i].direction;
+				dir.Normalise();
+				CVector pos = Streaks[i].position + secondsElapsed * Streaks[i].direction;
+				RenderOneRainStreak(pos, dir, intensity, false, (pos - TheCamera.GetPosition()).Magnitude());
+#ifndef FIX_BUGS // remove useless code
+				if (secondsElapsed > 1.0f && secondsElapsed < STREAK_LIFETIME - 1.0f) {
+					CGeneral::GetRandomNumber(), CGeneral::GetRandomNumber();
+				}
+#endif
+			}
+		}
+		else if ((CGeneral::GetRandomNumber() & 0xF00) == 0){
+			// 1/16 probability
+			Streaks[i].direction = CVector(4.0f, 4.0f, -4.0f);
+			Streaks[i].position = 6.0f * TheCamera.GetForward() + TheCamera.GetPosition() + CVector(-1.8f * Streaks[i].direction.x, -1.8f * Streaks[i].direction.y, 8.0f);
+			if (!CCutsceneMgr::IsCutsceneProcessing()) {
+				Streaks[i].position.x += 2.0f * FindPlayerSpeed().x * 60.0f;
+				Streaks[i].position.y += 2.0f * FindPlayerSpeed().y * 60.0f;
+			}
+			else
+				Streaks[i].position += (TheCamera.GetPosition() - TheCamera.m_RealPreviousCameraPosition) * 20.0f;
+			Streaks[i].position.x += ((CGeneral::GetRandomNumber() & 255) - 128) * 0.08f;
+			Streaks[i].position.y += ((CGeneral::GetRandomNumber() & 255) - 128) * 0.08f;
+			Streaks[i].timer = CTimer::GetTimeInMilliseconds();
+		}
+	}
+	if (TempBufferIndicesStored){
+		RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)FALSE);
+		RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+		RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+		RwRenderStateSet(rwRENDERSTATEFOGTYPE, (void*)rwFOGTYPELINEAR);
+		RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDONE);
+		RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDONE);
+		RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+		RwRenderStateSet(rwRENDERSTATETEXTURERASTER, RwTextureGetRaster(gpRainDropTex[3]));
+		if (RwIm3DTransform(TempBufferRenderVertices, TempBufferVerticesStored, nil, 1))
+		{
+			RwIm3DRenderIndexedPrimitive(rwPRIMTYPETRILIST, TempBufferRenderIndexList, TempBufferIndicesStored);
+			RwIm3DEnd();
+		}
+		RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)TRUE);
+		RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+		RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+		RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+		RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+		RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)FALSE);
+	}
+	TempBufferVerticesStored = 0;
+	TempBufferIndicesStored = 0;
+}
+
 void CWeather::StoreWeatherState()
 {
 	Stored_StateStored = true;
--- a/src/render/Weather.h
+++ b/src/render/Weather.h
@ -8,6 +8,14 @@ enum {
 class CWeather
 {
 public:
+	enum {
+		WEATHER_RANDOM = -1,
+		WEATHER_SUNNY = 0,
+		WEATHER_CLOUDY = 1,
+		WEATHER_RAINY = 2,
+		WEATHER_FOGGY = 3,
+		WEATHER_TOTAL = 4
+	};
 	static int32 &SoundHandle;

 	static int32 &WeatherTypeInList;
@ -46,4 +54,18 @@ public:
 	static void ForceWeatherNow(int16);
 	static void StoreWeatherState();
 	static void RestoreWeatherState();
+	static void AddRain();
 };
+
+enum {
+	NUM_RAIN_STREAKS = 35
+};
+
+struct tRainStreak
+{
+	CVector position;
+	CVector direction;
+	uint32 timer;
+};
+
+extern RwTexture* (&gpRainDropTex)[4];