initial importHEADmain

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diff --git a/src/parsec/g_explod.cpp b/src/parsec/g_explod.cpp
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+/*
+ * PARSEC - Explosion Drawing Code
+ *
+ * $Author: uberlinuxguy $ - $Date: 2004/09/15 12:25:25 $
+ *
+ * Orginally written by:
+ *   Copyright (c) Markus Hadwiger     <msh@parsec.org>   1995-1999
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */ 
+
+// C library
+#include <math.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+// compilation flags/debug support
+#include "config.h"
+#include "debug.h"
+
+// general definitions
+#include "general.h"
+#include "objstruc.h"
+
+// global externals
+#include "globals.h"
+
+// subsystem headers
+#include "net_defs.h"
+#include "vid_defs.h"
+
+// drawing subsystem
+#include "d_bmap.h"
+#include "d_iter.h"
+
+// mathematics header
+#include "utl_math.h"
+
+// model header
+#include "utl_model.h"
+
+// local module header
+#include "g_explod.h"
+
+// proprietary module headers
+#include "con_aux.h"
+#include "h_supp.h"
+#include "obj_ctrl.h"
+#include "part_api.h"
+#include "part_def.h"
+#include "part_sys.h"
+#include "g_shkwav.h"
+
+
+
+// constants ------------------------------------------------------------------
+//
+#define EXPLOSION_REFERENCE_Z	900.0
+#define EXPLOSION_REFERENCE_Z_m 420.0
+#define EXPLOSION_REFERENCE_Z_h 1380.0
+#define EXPLOSION_REFERENCE_Z_v 1600.0
+
+
+// draw explosion using custom draw particles ---------------------------------
+//
+PRIVATE
+void DrawParticleBaseExplosion( const ShipObject *shippo )
+{
+	if ( shippo->ExplosionCount == MAX_EXPLOSION_COUNT ) {
+
+		static int dfac_1 = RAND() % 7 + 3;
+		static int dfac_2 = RAND() % 7 + 3;
+		static int dfac_3 = RAND() % 7 + 3;
+		static int dfac_4 = RAND() % 7 + 3;
+		static int dfac_5 = RAND() % 7 + 3;
+
+		// alter basic attributes
+		float ref_z = 600;//400;//spreadfire_ref_z * 2;
+		int bitmap    = iter_texrgba | iter_specularadd;
+		int color	  = 0;//SPREADFIRE_PARTICLE_COLOR;
+		int sizebound = PRT_NO_SIZEBOUND;
+		int lifetime  = 1000; //shippo->SpreadLifeTime;
+
+		// fetch pdef
+		pdef_s *pdef = PDEF_explode1();
+		if ( pdef == NULL )
+			return;
+
+		// create pextinfo
+		pextinfo_s extinfo;
+		PRT_InitParticleExtInfo( &extinfo, pdef, NULL, NULL );
+
+		Vector3 dirvec;
+		fixed_t speed = 0;
+		DirVctMUL( shippo->ObjPosition, FIXED_TO_GEOMV( speed ), &dirvec );
+
+		Vertex3 object_space;
+		object_space.X = GEOMV_0;
+		object_space.Y = GEOMV_0;
+		object_space.Z = GEOMV_0;
+
+		Vertex3 world_space;
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+
+		dword owner = GetObjectOwner( shippo );
+
+		particle_s particle;
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+		ref_z = 100;
+		object_space.X = INT_TO_GEOMV( 0 + dfac_1 );
+		object_space.Y = INT_TO_GEOMV( 30 - dfac_1 );
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+		ref_z = 80;
+		object_space.X = INT_TO_GEOMV( -20 + dfac_2 );
+		object_space.Y = INT_TO_GEOMV( 10 - dfac_2 );
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+		ref_z = 120;
+		object_space.X = INT_TO_GEOMV( 20 - dfac_3 );
+		object_space.Y = INT_TO_GEOMV( 0 + dfac_3 );
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+		ref_z = 30;
+		object_space.X = INT_TO_GEOMV( 30 - dfac_4 );
+		object_space.Y = INT_TO_GEOMV( -20 + dfac_4 );
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+		ref_z = 140;
+		object_space.X = INT_TO_GEOMV( 0 + dfac_5 );
+		object_space.Y = INT_TO_GEOMV( -30 + dfac_5 );
+		MtxVctMUL( shippo->ObjPosition, &object_space, &world_space );
+		PRT_InitParticle( particle, bitmap, color, sizebound,
+							ref_z, &world_space, &dirvec,
+							lifetime, owner, &extinfo );
+		PRT_CreateCustomDrawParticle( particle, shippo );
+//--
+	} else {
+
+		// move particles along with the ship
+		if ( !AUX_DISABLE_DYING_SHIP_MOVEMENT ) {
+
+			Vector3 dirvec;
+			fixed_t speed = shippo->CurSpeed * CurScreenRefFrames;
+			DirVctMUL( shippo->ObjPosition, FIXED_TO_GEOMV( speed ), &dirvec );
+
+			PRT_TranslateCustomParticles( dirvec, shippo );
+		}
+	}
+
+	PRT_DrawCustomParticles( shippo );
+}
+
+
+// draw legacy explosion using bitmaps ----------------------------------------
+//
+PRIVATE
+void DrawBitmapExplosion( const ShipObject *shippo )
+{
+	float refz = EXPLOSION_REFERENCE_Z_h * Screen_Height / 760.0f; // FIXME
+
+	dword frameno = BM_EXPLANIMBASE + ( BM_NUMEXPLFRAMES-1 - shippo->ExplosionCount / EXPL_REF_SPEED );
+
+	Vertex3 shipt;
+	FetchTVector( shippo->CurrentXmatrx, &shipt );
+	SPoint shiploc;
+	PROJECT_TO_SCREEN( shipt, shiploc );
+
+	float scalefac = refz / GEOMV_TO_FLOAT( shipt.Z );
+
+	dword scalewidth  = (dword) ( BitmapInfo[ frameno ].width * scalefac );
+	dword scaleheight = (dword) ( BitmapInfo[ frameno ].height * scalefac );
+
+	scalewidth  &= ~1;
+	scaleheight &= ~1;
+
+	D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+				  BitmapInfo[ frameno ].width,
+				  BitmapInfo[ frameno ].height,
+				  scalewidth, scaleheight,
+				  shiploc.X - scalewidth/2,
+				  shiploc.Y - scaleheight/2 );
+
+	// draw secondary explosion bitmaps
+	if ( !AUX_USE_SIMPLE_EXPLOSION ) {
+
+		static int dfac_1 = 1;
+		static int dfac_2 = 1;
+		static int dfac_3 = 1;
+		static int dfac_4 = 1;
+		static int dfac_5 = 1;
+
+		if ( shippo->ExplosionCount == MAX_EXPLOSION_COUNT ) {
+			dfac_1 = RAND() % 7 + 3;
+			dfac_2 = RAND() % 7 + 3;
+			dfac_3 = RAND() % 7 + 3;
+			dfac_4 = RAND() % 7 + 3;
+			dfac_5 = RAND() % 7 + 3;
+		}
+
+		dword _scalewidth  = scalewidth  / 2;
+		dword _scaleheight = scaleheight / 2;
+		if ( scalewidth > 0 && scaleheight > 0 )
+			D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+						  BitmapInfo[ frameno ].width,
+						  BitmapInfo[ frameno ].height,
+						  _scalewidth, _scaleheight,
+						  shiploc.X - _scalewidth/2  - _scalewidth/dfac_1,
+						  shiploc.Y - _scaleheight/2 - _scaleheight/dfac_2 );
+		if ( scalewidth > 0 && scaleheight > 0 )
+			D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+						  BitmapInfo[ frameno ].width,
+						  BitmapInfo[ frameno ].height,
+						  _scalewidth, _scaleheight,
+						  shiploc.X - _scalewidth/2  + _scalewidth/dfac_3,
+						  shiploc.Y - _scaleheight/2 + _scaleheight/dfac_4 );
+
+		_scalewidth  = scalewidth  / 3;
+		_scaleheight = scaleheight / 3;
+		if ( scalewidth > 0 && scaleheight > 0 )
+			D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+						  BitmapInfo[ frameno ].width,
+						  BitmapInfo[ frameno ].height,
+						  _scalewidth, _scaleheight,
+						  shiploc.X - _scalewidth/2  + _scalewidth/dfac_2,
+						  shiploc.Y - _scaleheight/2 - _scaleheight/dfac_5 );
+
+		_scalewidth  = scalewidth  / 4;
+		_scaleheight = scaleheight / 4;
+		if ( scalewidth > 0 && scaleheight > 0 )
+			D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+						  BitmapInfo[ frameno ].width,
+						  BitmapInfo[ frameno ].height,
+						  _scalewidth, _scaleheight,
+						  shiploc.X - _scalewidth/2  + _scalewidth/dfac_3,
+						  shiploc.Y - _scaleheight/2 + _scaleheight/dfac_1 );
+
+		_scalewidth  = scalewidth  / 5;
+		_scaleheight = scaleheight / 5;
+		if ( scalewidth > 0 && scaleheight > 0 )
+			D_PutSTCBitmap( BitmapInfo[ frameno ].bitmappointer,
+						  BitmapInfo[ frameno ].width,
+						  BitmapInfo[ frameno ].height,
+						  _scalewidth, _scaleheight,
+						  shiploc.X - _scalewidth/2  + _scalewidth/dfac_5,
+						  shiploc.Y - _scaleheight/2 + _scaleheight/dfac_4 );
+	}
+}
+
+
+// draw single frame of explosion animation -----------------------------------
+//
+void DrawExpAnim( const ShipObject *shippo )
+{
+	ASSERT( shippo != NULL );
+
+	// create shock wave if enabled (on first frame)
+	if ( AUX_EXPLOSION_DRAW_SHOCKWAVE ) {
+		ExplosionShockWave( shippo );
+	}
+
+	// draw explosion
+	if ( AUX_PARTICLE_BASE_EXPLOSION ) {
+
+		// anim frames are particles
+		DrawParticleBaseExplosion( shippo );
+
+	} else {
+
+		// anim frames are bitmaps
+		DrawBitmapExplosion( shippo );
+	}
+}
+
+
+