source/fx/fxsteam.cpp

@@ -0,0 +1,142 @@
+/************************/
+/*** Cloud Base Class ***/
+/************************/
+
+#include 	"system\global.h"
+#include	<DStructs.h>
+#include 	"utils\utils.h"
+#include 	"gfx\prim.h"
+#include	"gfx\sprbank.h"
+#include	<sprites.h>
+#include	"level\level.h"
+
+#include	"FX\FXcloud.h"
+
+
+DVECTOR		SmokeVel;
+u16			AngleInc=16;
+
+u8			StartR=255;
+u8			StartG=255;
+u8			StartB=255;
+s8			RInc=-8;
+s8			BInc=-8;
+s8			GInc=-8;
+s16			StartScaleX=256;
+s16			ScaleXInc=256;
+s16			StartScaleY=256;
+s16			ScaleYInc=256;
+
+/*****************************************************************************/
+/*****************************************************************************/
+/*****************************************************************************/
+void	CFXCloud::init(DVECTOR const &_Pos)
+{
+		CFX::init();
+		Pos=_Pos;
+		HeadIdx=0;
+		ListCount=1;
+		Angle=0;
+}
+
+/*****************************************************************************/
+void	CFXCloud::shutdown()
+{
+		CFX::shutdown();
+}
+
+/*****************************************************************************/
+/*** Think *******************************************************************/
+/*****************************************************************************/
+int	SS=4;
+void	CFXCloud::think(int _frames)
+{
+int		ThisIdx=HeadIdx;
+DVECTOR	Vel=SmokeVel;
+		if (Parent)
+		{
+			this->setPos(Parent->getPos());
+		}
+
+		CFX::think(_frames);
+
+		HeadIdx--;
+		if (HeadIdx<0) HeadIdx+=ListCount;
+
+		if (Parent)
+		{
+			setPos(Parent->getPos());
+		}
+		List[HeadIdx].Ofs=getPos();
+
+
+		for (int i=0; i<ListCount-1; i++)
+		{
+			sList	&ThisElem=List[ThisIdx++];
+			ThisIdx&=MAX_TRAIL-1;
+			ThisElem.Ofs.vx+=Vel.vx>>SS;
+			ThisElem.Ofs.vy+=Vel.vy>>SS;
+			Vel.vx+=SmokeVel.vx;
+			Vel.vy+=SmokeVel.vy;
+		}
+		ListCount++;
+		if (ListCount>MAX_TRAIL)
+		{
+			ListCount=MAX_TRAIL;
+		}
+
+}
+
+/*****************************************************************************/
+/*** Render ******************************************************************/
+/*****************************************************************************/
+int	ST=3;
+
+void	CFXCloud::render()
+{
+		CFX::render();
+
+		if (canRender())
+		{
+			DVECTOR	const &MapOfs=CLevel::getCameraPos();
+			DVECTOR	RenderPos;
+			int		ThisIdx=HeadIdx;
+
+			int		ThisAngle=Angle;
+			int		ThisScaleX=StartScaleX;
+			int		ThisScaleY=StartScaleY;
+			u8		ThisR=StartR;
+			u8		ThisG=StartG;
+			u8		ThisB=StartB;
+			
+			for (int i=0; i<ListCount; i++)
+			{
+				sList		&ThisOfs=List[ThisIdx];
+				POLY_FT4	*Ft4;
+
+				RenderPos.vx=ThisOfs.Ofs.vx-MapOfs.vx;
+				RenderPos.vy=ThisOfs.Ofs.vy-MapOfs.vy;
+
+				Ft4=m_spriteBank->printRotatedScaledSprite(FRM__SMOKE,RenderPos.vx,RenderPos.vy,ThisScaleX,ThisScaleY,ThisAngle,OtPos*0);
+				setShadeTex(Ft4,0);
+				setSemiTrans(Ft4,1);
+				setRGB0(Ft4,ThisR,ThisB,ThisB);
+				Ft4->tpage|=ST<<5;
+
+				ThisR+=RInc;
+				ThisG+=GInc;
+				ThisB+=BInc;
+
+				ThisAngle+=AngleInc;
+				ThisAngle&=4095;
+				ThisScaleX+=ScaleXInc;
+				ThisScaleY+=ScaleYInc;
+
+				ThisIdx++;
+				ThisIdx&=MAX_TRAIL-1;
+			}
+			Angle+=AngleInc/2;
+			Angle&=4095;
+
+		}
+}

source/fx/fxsteam.h

@@ -0,0 +1,35 @@
+/**********************/
+/*** JellyFish Legs ***/
+/**********************/
+
+#ifndef	__FX_FX_CLOUD_HEADER__
+#define __FX_FX_CLOUD_HEADER__
+
+#include "fx/fx.h"
+
+/*****************************************************************************/
+class CFXCloud : public CFX
+{
+public:
+		struct	sList
+		{
+			DVECTOR	Ofs;
+		};
+		enum
+		{
+			MAX_TRAIL = 16
+		};
+
+virtual void		init(DVECTOR const &Pos);
+virtual void		shutdown();
+virtual void		think(int _frames);
+virtual void		render();
+
+protected:
+		sList		List[MAX_TRAIL];
+		int			ListCount;
+		int			HeadIdx;
+		int			Angle;
+};
+
+#endif