9 files changed, 301 insertions, 7 deletions

diff --git a/src/RwHelper.cpp b/src/RwHelper.cpp
index c8782f9e..2634cfd6 100644
--- a/src/RwHelper.cpp
+++ b/src/RwHelper.cpp
@@ -1,5 +1,31 @@
+#define WITHD3D
 #include "common.h"
+#include "TimeCycle.h"
 
+void
+DefinedState(void)
+{
+	RwRenderStateSet(rwRENDERSTATETEXTUREADDRESS, (void*)rwTEXTUREADDRESSWRAP);
+	RwRenderStateSet(rwRENDERSTATETEXTUREPERSPECTIVE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATESHADEMODE, (void*)rwSHADEMODEGOURAUD);
+	RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void*)rwFILTERLINEAR);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEALPHAPRIMITIVEBUFFER, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEBORDERCOLOR, (void*)RWRGBALONG(0, 0, 0, 255));
+	RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEFOGCOLOR,
+		(void*)RWRGBALONG(CTimeCycle::GetFogRed(), CTimeCycle::GetFogGreen(), CTimeCycle::GetFogBlue(), 255));
+	RwRenderStateSet(rwRENDERSTATEFOGTYPE, (void*)rwFOGTYPELINEAR);
+	RwRenderStateSet(rwRENDERSTATECULLMODE, (void*)rwCULLMODECULLNONE);
+
+	// D3D stuff
+	RwD3D8SetRenderState(D3DRS_ALPHAFUNC, D3DCMP_GREATER);
+	RwD3D8SetRenderState(D3DRS_ALPHAREF, 2);
+}
 
 RwObject*
 GetFirstObjectCallback(RwObject *object, void *data)
diff --git a/src/RwHelper.h b/src/RwHelper.h
index 90852b08..49292449 100644
--- a/src/RwHelper.h
+++ b/src/RwHelper.h
@@ -1,3 +1,4 @@
 #pragma once
 
+void DefinedState(void);
 RwObject *GetFirstObject(RwFrame *frame);
diff --git a/src/Timecycle.h b/src/Timecycle.h
index 6946cc7c..2f9e4f2f 100644
--- a/src/Timecycle.h
+++ b/src/Timecycle.h
@@ -107,5 +107,8 @@ public:
 	static int GetFluffyCloudsBottomRed(void) { return m_nCurrentFluffyCloudsBottomRed; }
 	static int GetFluffyCloudsBottomGreen(void) { return m_nCurrentFluffyCloudsBottomGreen; }
 	static int GetFluffyCloudsBottomBlue(void) { return m_nCurrentFluffyCloudsBottomBlue; }
+	static int GetFogRed(void) { return m_nCurrentFogColourRed; }
+	static int GetFogGreen(void) { return m_nCurrentFogColourGreen; }
+	static int GetFogBlue(void) { return m_nCurrentFogColourBlue; }
 
 };
diff --git a/src/common.h b/src/common.h
index 34214d42..a82e4c7f 100644
--- a/src/common.h
+++ b/src/common.h
@@ -13,6 +13,11 @@
 #include <assert.h>
 #include <new>
 
+#ifdef WITHD3D
+#include <Windows.h>
+#include <d3d8types.h>
+#endif
+
 #include <rwcore.h>
 #include <rpworld.h>
 
diff --git a/src/main.cpp b/src/main.cpp
index 955b33ed..4f125098 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,17 +25,12 @@ void operator delete(void *ptr) noexcept { gtadelete(ptr); }
 unsigned __int64 myrand_seed = 1;
 
 int
-myps2rand(void)
+myrand(void)
 {
 	myrand_seed = 0x5851F42D4C957F2D * myrand_seed + 1;
 	return ((myrand_seed >> 32) & 0x7FFFFFFF);
 }
 
-int myrand(void)
-{
-	return myps2rand();
-}
-
 void
 mysrand(unsigned int seed)
 {
diff --git a/src/render/Draw.cpp b/src/render/Draw.cpp
index f26f2ada..6244c3fa 100644
--- a/src/render/Draw.cpp
+++ b/src/render/Draw.cpp
@@ -1,6 +1,34 @@
 #include "common.h"
+#include "patcher.h"
 #include "Draw.h"
 
 float &CDraw::ms_fNearClipZ = *(float*)0x8E2DC4;
 float &CDraw::ms_fFarClipZ = *(float*)0x9434F0;
 float &CDraw::ms_fFOV = *(float*)0x5FBC6C;
+
+static float hFov2vFov(float hfov)
+{
+	float w = SCREENW;
+	float h = SCREENH;
+
+	// => tan(hFOV/2) = tan(vFOV/2)*aspectRatio
+	// => tan(vFOV/2) = tan(hFOV/2)/aspectRatio
+	float ar1 = 4.0/3.0;
+	float ar2 = w/h;
+	hfov = DEGTORAD(hfov);
+	float vfov = atan(tan(hfov/2) / ar1) *2;
+	hfov = atan(tan(vfov/2) * ar2) *2;
+	return RADTODEG(hfov);
+}
+
+void
+CDraw::SetFOV(float fov)
+{
+// TODO: fix FOV here or somewhere else?
+//	ms_fFOV = hFov2vFov(fov);
+	ms_fFOV = fov;
+}
+
+STARTPATCHES
+	InjectHook(0x4FE7B0, CDraw::SetFOV, PATCH_JUMP);
+ENDPATCHES
diff --git a/src/render/Draw.h b/src/render/Draw.h
index 62fe5193..84ec7ed3 100644
--- a/src/render/Draw.h
+++ b/src/render/Draw.h
@@ -11,6 +11,6 @@ public:
 	static float GetNearClipZ(void) { return ms_fNearClipZ; }
 	static void SetFarClipZ(float farclip) { ms_fFarClipZ = farclip; }
 	static float GetFarClipZ(void) { return ms_fFarClipZ; }
-	static void SetFOV(float fov) { ms_fFOV = fov; }
+	static void SetFOV(float fov);
 	static float GetFOV(void) { return ms_fFOV; }
 };
diff --git a/src/render/MBlur.cpp b/src/render/MBlur.cpp
new file mode 100644
index 00000000..b7a65adc
--- /dev/null
+++ b/src/render/MBlur.cpp
@@ -0,0 +1,221 @@
+#include "common.h"
+#include "patcher.h"
+#include "RwHelper.h"
+#include "MBlur.h"
+
+RwRaster *&CMBlur::pFrontBuffer = *(RwRaster**)0x8E2C48;
+bool &CMBlur::ms_bJustInitialised = *(bool*)0x95CDAB;
+bool &CMBlur::BlurOn = *(bool*)0x95CDAD;
+
+static RwIm2DVertex Vertex[4];
+//static RwIm2DVertex *Vertex = (RwIm2DVertex*)0x62F780;
+static RwImVertexIndex Index[6] = { 0, 1, 2, 0, 2, 3 };
+
+void
+CMBlur::MotionBlurOpen(RwCamera *cam)
+{
+	// TODO. this is simplified
+
+	RwRect rect = { 0, 0, 0, 0 };
+
+	if(pFrontBuffer)
+		MotionBlurClose();
+
+	if(BlurOn){
+		for(rect.w = 1; rect.w < RwRasterGetWidth(RwCameraGetRaster(cam)); rect.w *= 2);
+		for(rect.h = 1; rect.h < RwRasterGetHeight(RwCameraGetRaster(cam)); rect.h *= 2);
+		pFrontBuffer = RwRasterCreate(rect.w, rect.h, RwRasterGetDepth(RwCameraGetRaster(cam)), rwRASTERTYPECAMERATEXTURE);
+		if(pFrontBuffer)
+			ms_bJustInitialised = true;
+		else{
+			debug("MBlurOpen can't create raster.");
+			BlurOn = false;
+			rect.w = RwRasterGetWidth(RwCameraGetRaster(cam));
+			rect.h = RwRasterGetHeight(RwCameraGetRaster(cam));
+		}
+		CreateImmediateModeData(cam, &rect);
+	}else{
+		rect.w = RwRasterGetWidth(RwCameraGetRaster(cam));
+		rect.h = RwRasterGetHeight(RwCameraGetRaster(cam));
+		CreateImmediateModeData(cam, &rect);
+	}
+}
+
+void
+CMBlur::MotionBlurClose(void)
+{
+	if(pFrontBuffer){
+		RwRasterDestroy(pFrontBuffer);
+		pFrontBuffer = nil;
+	}
+}
+
+void
+CMBlur::CreateImmediateModeData(RwCamera *cam, RwRect *rect)
+{
+	float zero, xmax, ymax;
+
+	if(RwRasterGetDepth(RwCameraGetRaster(cam)) == 16){
+		zero = 0.5f;
+		xmax = rect->w + 0.5f;
+		ymax = rect->h + 0.5f;
+	}else{
+		zero = -0.5f;
+		xmax = rect->w - 0.5f;
+		ymax = rect->h - 0.5f;
+	}
+
+	RwIm2DVertexSetScreenX(&Vertex[0], zero);
+	RwIm2DVertexSetScreenY(&Vertex[0], zero);
+	RwIm2DVertexSetScreenZ(&Vertex[0], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[0], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[0], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[0], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[0], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[1], zero);
+	RwIm2DVertexSetScreenY(&Vertex[1], ymax);
+	RwIm2DVertexSetScreenZ(&Vertex[1], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[1], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[1], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[1], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[1], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[1], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[2], xmax);
+	RwIm2DVertexSetScreenY(&Vertex[2], ymax);
+	RwIm2DVertexSetScreenZ(&Vertex[2], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[2], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[2], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[2], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[2], 255, 255, 255, 255);
+
+	RwIm2DVertexSetScreenX(&Vertex[3], xmax);
+	RwIm2DVertexSetScreenY(&Vertex[3], zero);
+	RwIm2DVertexSetScreenZ(&Vertex[3], RwIm2DGetNearScreenZ());
+	RwIm2DVertexSetCameraZ(&Vertex[3], RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetRecipCameraZ(&Vertex[3], 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetU(&Vertex[3], 1.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetV(&Vertex[3], 0.0f, 1.0f/RwCameraGetNearClipPlane(cam));
+	RwIm2DVertexSetIntRGBA(&Vertex[3], 255, 255, 255, 255);
+
+}
+
+void
+CMBlur::MotionBlurRender(RwCamera *cam, uint32 red, uint32 green, uint32 blue, uint32 alpha, int32 type, uint32 bluralpha)
+{
+	RwRGBA color = { red, green, blue, alpha };
+	if(BlurOn){
+		if(pFrontBuffer){
+			if(ms_bJustInitialised)
+				ms_bJustInitialised = false;
+			else
+				OverlayRender(cam, pFrontBuffer, color, type, bluralpha);
+		}
+		RwRasterPushContext(pFrontBuffer);
+		RwRasterRenderFast(RwCameraGetRaster(cam), 0, 0);
+		RwRasterPopContext();
+	}else{
+		OverlayRender(cam, nil, color, type, bluralpha);
+	}
+}
+
+void
+CMBlur::OverlayRender(RwCamera *cam, RwRaster *raster, RwRGBA color, int32 type, uint32 bluralpha)
+{
+	int r, g, b, a;
+
+	r = color.red;
+	g = color.green;
+	b = color.blue;
+	a = color.alpha;
+
+	DefinedState();
+
+	switch(type){
+	case 3:
+		r = 0;
+		g = 255;
+		b = 0;
+		a = 128;
+		break;
+	case 5:
+		r = 100;
+		g = 220;
+		b = 230;
+		a = 158;
+		break;
+	case 6:
+		r = 80;
+		g = 255;
+		b = 230;
+		a = 138;
+		break;
+	case 8:
+		r = 255;
+		g = 60;
+		b = 60;
+		a = 200;
+		break;
+	case 9:
+		r = 255;
+		g = 180;
+		b = 180;
+		a = 128;
+		break;
+	}
+
+	if(!BlurOn){
+		r *= 0.6f;
+		g *= 0.6f;
+		b *= 0.6f;
+		if(type != 1)
+			a *= 0.6f;
+		// game clamps to 255 here, but why?
+	}
+	RwIm2DVertexSetIntRGBA(&Vertex[0], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[1], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[2], r, g, b, a);
+	RwIm2DVertexSetIntRGBA(&Vertex[3], r, g, b, a);
+
+	RwRenderStateSet(rwRENDERSTATETEXTUREFILTER, (void*)rwFILTERNEAREST);
+	RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)FALSE);
+
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, BlurOn ? raster : nil);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+	RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+
+	a = bluralpha/2;
+	if(a < 30)
+		a = 30;
+
+	if(BlurOn && a != 0){	// the second condition should always be true
+		RwIm2DVertexSetIntRGBA(&Vertex[0], 255, 255, 255, a);
+		RwIm2DVertexSetIntRGBA(&Vertex[1], 255, 255, 255, a);
+		RwIm2DVertexSetIntRGBA(&Vertex[2], 255, 255, 255, a);
+		RwIm2DVertexSetIntRGBA(&Vertex[3], 255, 255, 255, a);
+		RwIm2DRenderIndexedPrimitive(rwPRIMTYPETRILIST, Vertex, 4, Index, 6);
+	}
+
+	RwRenderStateSet(rwRENDERSTATEFOGENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATEZTESTENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATEZWRITEENABLE, (void*)TRUE);
+	RwRenderStateSet(rwRENDERSTATETEXTURERASTER, nil);
+	RwRenderStateSet(rwRENDERSTATEVERTEXALPHAENABLE, (void*)FALSE);
+	RwRenderStateSet(rwRENDERSTATESRCBLEND, (void*)rwBLENDSRCALPHA);
+	RwRenderStateSet(rwRENDERSTATEDESTBLEND, (void*)rwBLENDINVSRCALPHA);
+}
+
+STARTPATCHES
+	InjectHook(0x50AE40, CMBlur::MotionBlurOpen, PATCH_JUMP);
+	InjectHook(0x50B170, CMBlur::MotionBlurClose, PATCH_JUMP);
+	InjectHook(0x50A800, CMBlur::CreateImmediateModeData, PATCH_JUMP);
+	InjectHook(0x50AD70, CMBlur::MotionBlurRender, PATCH_JUMP);
+	InjectHook(0x50A9C0, CMBlur::OverlayRender, PATCH_JUMP);
+ENDPATCHES
diff --git a/src/render/MBlur.h b/src/render/MBlur.h
new file mode 100644
index 00000000..67ed658f
--- /dev/null
+++ b/src/render/MBlur.h
@@ -0,0 +1,15 @@
+#pragma once
+
+class CMBlur
+{
+	static RwRaster *&pFrontBuffer;
+	static bool &ms_bJustInitialised;
+	static bool &BlurOn;
+
+public:
+	static void MotionBlurOpen(RwCamera *cam);
+	static void MotionBlurClose(void);
+	static void CreateImmediateModeData(RwCamera *cam, RwRect *rect);
+	static void MotionBlurRender(RwCamera *cam, uint32 red, uint32 green, uint32 blue, uint32 alpha, int32 type, uint32 bluralpha);
+	static void OverlayRender(RwCamera *cam, RwRaster *raster, RwRGBA color, int32 type, uint32 bluralpha);
+};