jaggedalliance2/ja2/Build/Tactical/bullets.c

#ifdef PRECOMPILEDHEADERS
	#include "Tactical All.h"
#else
	#include "math.h"
	#include <stdio.h>
	#include <errno.h>

	#include "worlddef.h"
	#include "renderworld.h"
	#include "vsurface.h"
	#include "Render Dirty.h"
	#include "sysutil.h"
	#include "container.h"
	#include "wcheck.h"
	#include "video.h"
	#include "vobject_blitters.h"
	#include "faces.h"
	#include "utilities.h"
	#include "overhead.h"
	#include "gap.h"
	#include "Soldier Profile.h"
	#include "Bullets.h"
	#include "los.h"
	#include "worldman.h"
	#include "random.h"
	#include "GameSettings.h"
	#include "FileMan.h"
#endif


// Defines
#define		NUM_BULLET_SLOTS					50


// GLOBAL FOR FACES LISTING
BULLET	gBullets[ NUM_BULLET_SLOTS ];
UINT32  guiNumBullets = 0;


INT32 GetFreeBullet(void)
{
	UINT32 uiCount;

	for(uiCount=0; uiCount < guiNumBullets; uiCount++)
	{
		if((gBullets[uiCount].fAllocated==FALSE) )
			return((INT32)uiCount);
	}

	if(guiNumBullets < NUM_BULLET_SLOTS )
		return((INT32)guiNumBullets++);

	return(-1);
}


void RecountBullets(void)
{
	INT32 uiCount;

	for(uiCount=guiNumBullets-1; (uiCount >=0) ; uiCount--)
	{
		if( ( gBullets[uiCount].fAllocated ) )
		{
			guiNumBullets=(UINT32)(uiCount+1);
			return;
		}
	}
	guiNumBullets = 0;
}


INT32	CreateBullet( UINT8 ubFirerID, BOOLEAN fFake, UINT16 usFlags )
{
	INT32			iBulletIndex;
	BULLET		*pBullet;

	if( ( iBulletIndex = GetFreeBullet() )==(-1) )
		return(-1);

	memset(&gBullets[ iBulletIndex ], 0, sizeof( BULLET ) );

	pBullet = &gBullets[ iBulletIndex ];

	pBullet->iBullet = iBulletIndex;
	pBullet->fAllocated = TRUE;
	pBullet->fLocated		= FALSE;
	pBullet->ubFirerID	= ubFirerID;
	pBullet->usFlags		= usFlags;
	pBullet->usLastStructureHit = 0;

	if (fFake)
	{
		pBullet->fReal = FALSE;
	}
	else
	{
		pBullet->fReal = TRUE;
	}

	return( iBulletIndex );
}


void HandleBulletSpecialFlags( INT32 iBulletIndex )
{
	BULLET		*pBullet;
	ANITILE_PARAMS	AniParams;
	FLOAT		dX, dY;
	UINT8		ubDirection;

	pBullet = &( gBullets[ iBulletIndex ] );

	memset( &AniParams, 0, sizeof( ANITILE_PARAMS ) );

	if ( pBullet->fReal )
	{
		// Create ani tile if this is a spit!
		if ( pBullet->usFlags & ( BULLET_FLAG_KNIFE ) )
		{
			AniParams.sGridNo							= (INT16)pBullet->sGridNo;
			AniParams.ubLevelID						= ANI_STRUCT_LEVEL;
			AniParams.sDelay							= 100;
			AniParams.sStartFrame					= 3;
			AniParams.uiFlags							= ANITILE_CACHEDTILE | ANITILE_FORWARD | ANITILE_LOOPING | ANITILE_USE_DIRECTION_FOR_START_FRAME;
			AniParams.sX									= FIXEDPT_TO_INT32( pBullet->qCurrX );
			AniParams.sY									= FIXEDPT_TO_INT32( pBullet->qCurrY );
			AniParams.sZ									= CONVERT_HEIGHTUNITS_TO_PIXELS( FIXEDPT_TO_INT32( pBullet->qCurrZ ) );

			if ( pBullet->usFlags & ( BULLET_FLAG_CREATURE_SPIT ) )
			{
				strcpy( AniParams.zCachedFile, "TILECACHE\\SPIT2.STI" );
			}
			else if ( pBullet->usFlags & ( BULLET_FLAG_KNIFE ) )
			{
				strcpy( AniParams.zCachedFile, "TILECACHE\\KNIFING.STI" );
				pBullet->ubItemStatus = pBullet->pFirer->inv[ HANDPOS ].bStatus[0];
			}

			// Get direction to use for this guy....
			dX = ( (FLOAT)( pBullet->qIncrX ) / FIXEDPT_FRACTIONAL_RESOLUTION );
			dY = ( (FLOAT)( pBullet->qIncrY ) / FIXEDPT_FRACTIONAL_RESOLUTION );

			ubDirection = atan8( 0, 0, (INT16)( dX * 100 ), (INT16)( dY * 100 ) );

			AniParams.uiUserData3					= ubDirection;

			pBullet->pAniTile = CreateAnimationTile( &AniParams );

			// IF we are anything that needs a shadow.. set it here....
			if ( pBullet->usFlags & ( BULLET_FLAG_KNIFE ) )
			{
				AniParams.ubLevelID						= ANI_SHADOW_LEVEL;
				AniParams.sZ									= 0;				
				pBullet->pShadowAniTile				= CreateAnimationTile( &AniParams );
			}

		}
	}
}


void RemoveBullet( INT32 iBullet )
{
	CHECKV( iBullet < NUM_BULLET_SLOTS );

	// decrease soldier's bullet count
	
	if (gBullets[ iBullet ].fReal)
	{
		// set to be deleted at next update
		gBullets[ iBullet ].fToDelete = TRUE;

		// decrement reference to bullet in the firer
		gBullets[ iBullet ].pFirer->bBulletsLeft--;
		DebugMsg( TOPIC_JA2, DBG_LEVEL_3, String("!!!!!!! Ending bullet, bullets left %d", gBullets[ iBullet ].pFirer->bBulletsLeft ) );

		if ( gBullets[ iBullet ].usFlags & ( BULLET_FLAG_KNIFE ) )
		{
			// Delete ani tile
			if ( gBullets[ iBullet ].pAniTile != NULL )
			{
				DeleteAniTile( gBullets[ iBullet ].pAniTile );
				gBullets[ iBullet ].pAniTile = NULL;
			}

			// Delete shadow
			if ( gBullets[ iBullet ].usFlags & ( BULLET_FLAG_KNIFE ) )
			{
				if ( gBullets[ iBullet ].pShadowAniTile != NULL )
				{
					DeleteAniTile( gBullets[ iBullet ].pShadowAniTile );
					gBullets[ iBullet ].pShadowAniTile = NULL;
				}
			}

		}
	}
	else
	{
		// delete this fake bullet right away!
		gBullets[ iBullet ].fAllocated = FALSE;
		RecountBullets();
	}
}

void LocateBullet( INT32 iBulletIndex )
{
	if ( gGameSettings.fOptions[ TOPTION_SHOW_MISSES ] )
	{
	  // Check if a bad guy fired!
	  if ( gBullets[ iBulletIndex ].ubFirerID != NOBODY )
	  {
		  if ( MercPtrs[ gBullets[ iBulletIndex ].ubFirerID ]->bSide == gbPlayerNum )
		  {
			  if ( !gBullets[ iBulletIndex ].fLocated )
			  {
				  gBullets[ iBulletIndex ].fLocated = TRUE;

				  //Only if we are in turnbased and noncombat
				  if ( gTacticalStatus.uiFlags & TURNBASED && (gTacticalStatus.uiFlags & INCOMBAT) )
				  {
					  LocateGridNo( (INT16)gBullets[ iBulletIndex ].sGridNo );
				  }
			  }
		  }
	  }
  }
}


void UpdateBullets( )
{
	UINT32					uiCount;
	LEVELNODE				*pNode;
	BOOLEAN					fDeletedSome = FALSE;

	for ( uiCount = 0; uiCount < guiNumBullets; uiCount++ )
	{
		if ( gBullets[ uiCount ].fAllocated)
		{
			if (gBullets[ uiCount ].fReal && !( gBullets[ uiCount ].usFlags & BULLET_STOPPED ) )
			{
				// there are duplicate checks for deletion in case the bullet is deleted by shooting
				// someone at point blank range, in the first MoveBullet call in the FireGun code
				if ( gBullets[ uiCount ].fToDelete )
				{
					// Remove from old position
					gBullets[ uiCount ].fAllocated = FALSE;
					fDeletedSome = TRUE;
					continue;
				}

				//if ( !( gGameSettings.fOptions[ TOPTION_HIDE_BULLETS ] ) )
				{
					// ALRIGHTY, CHECK WHAT TYPE OF BULLET WE ARE

					if ( gBullets[ uiCount ].usFlags & ( BULLET_FLAG_CREATURE_SPIT | BULLET_FLAG_KNIFE | BULLET_FLAG_MISSILE | BULLET_FLAG_SMALL_MISSILE | BULLET_FLAG_TANK_CANNON | BULLET_FLAG_FLAME ) )
					{
					}
					else
					{
						RemoveStruct( gBullets[ uiCount ].sGridNo, BULLETTILE1 );
						RemoveStruct( gBullets[ uiCount ].sGridNo, BULLETTILE2 );
					}
				}

				MoveBullet( uiCount );
				if ( gBullets[ uiCount ].fToDelete )
				{
					// Remove from old position
					gBullets[ uiCount ].fAllocated = FALSE;
					fDeletedSome = TRUE;
					continue;
				}

				if ( gBullets[ uiCount ].usFlags & BULLET_STOPPED )
				{
					continue;
				}

				// Display bullet
				//if ( !( gGameSettings.fOptions[ TOPTION_HIDE_BULLETS ] ) )
				{
					if ( gBullets[ uiCount ].usFlags & ( BULLET_FLAG_KNIFE ) )
					{
						if ( gBullets[ uiCount ].pAniTile != NULL )
						{
							gBullets[ uiCount ].pAniTile->sRelativeX	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrX );
							gBullets[ uiCount ].pAniTile->sRelativeY	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrY );
							gBullets[ uiCount ].pAniTile->pLevelNode->sRelativeZ  = (INT16) CONVERT_HEIGHTUNITS_TO_PIXELS( FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrZ ) );

							if ( gBullets[ uiCount ].usFlags & ( BULLET_FLAG_KNIFE ) )
							{
								gBullets[ uiCount ].pShadowAniTile->sRelativeX	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrX );
								gBullets[ uiCount ].pShadowAniTile->sRelativeY	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrY );
							}

						}
					}
					// Are we a missle?
					else if ( gBullets[ uiCount ].usFlags & ( BULLET_FLAG_MISSILE | BULLET_FLAG_SMALL_MISSILE | BULLET_FLAG_TANK_CANNON | BULLET_FLAG_FLAME | BULLET_FLAG_CREATURE_SPIT ) )
					{
					}
					else
					{
						pNode = AddStructToTail( gBullets[ uiCount ].sGridNo, BULLETTILE1 );
						pNode->ubShadeLevel=DEFAULT_SHADE_LEVEL;
						pNode->ubNaturalShadeLevel=DEFAULT_SHADE_LEVEL;
						pNode->uiFlags |= ( LEVELNODE_USEABSOLUTEPOS | LEVELNODE_IGNOREHEIGHT );
						pNode->sRelativeX	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrX );
						pNode->sRelativeY	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrY );
						pNode->sRelativeZ = (INT16) CONVERT_HEIGHTUNITS_TO_PIXELS( FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrZ ) );

						// Display shadow
						pNode = AddStructToTail( gBullets[ uiCount ].sGridNo, BULLETTILE2 );
						pNode->ubShadeLevel=DEFAULT_SHADE_LEVEL;
						pNode->ubNaturalShadeLevel=DEFAULT_SHADE_LEVEL;
						pNode->uiFlags |= ( LEVELNODE_USEABSOLUTEPOS | LEVELNODE_IGNOREHEIGHT );
						pNode->sRelativeX	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrX );
						pNode->sRelativeY	= (INT16) FIXEDPT_TO_INT32( gBullets[ uiCount ].qCurrY );
						pNode->sRelativeZ = (INT16)gpWorldLevelData[ gBullets[ uiCount ].sGridNo ].sHeight;
					}
				}
			}
			else 
			{
				if ( gBullets[ uiCount ].fToDelete )
				{
					gBullets[ uiCount ].fAllocated = FALSE;
					fDeletedSome = TRUE;
				}
			}	
		}
	}

	if ( fDeletedSome )
	{
		RecountBullets( );
	}
}



BULLET *GetBulletPtr( INT32 iBullet )
{
	BULLET	*pBullet;

	CHECKN( iBullet < NUM_BULLET_SLOTS );

	pBullet = &gBullets[ iBullet ];

	return( pBullet );
}


void AddMissileTrail( BULLET *pBullet, FIXEDPT qCurrX, FIXEDPT qCurrY, FIXEDPT qCurrZ )
{
	ANITILE_PARAMS	AniParams;

	// If we are a small missle, don't show
	if ( pBullet->usFlags & ( BULLET_FLAG_SMALL_MISSILE | BULLET_FLAG_FLAME | BULLET_FLAG_CREATURE_SPIT ) )
	{
		if ( pBullet->iLoop < 5 )
		{
			return;
		}
	}

	// If we are a small missle, don't show
	if ( pBullet->usFlags & ( BULLET_FLAG_TANK_CANNON ) )
	{
		//if ( pBullet->iLoop < 40 )
		//{
			return;
		//}
	}


	memset( &AniParams, 0, sizeof( ANITILE_PARAMS ) );
	AniParams.sGridNo							= (INT16)pBullet->sGridNo;
	AniParams.ubLevelID						= ANI_STRUCT_LEVEL;
	AniParams.sDelay							= (INT16)( 100 + Random( 100 ) );
	AniParams.sStartFrame					= 0;
	AniParams.uiFlags							= ANITILE_CACHEDTILE | ANITILE_FORWARD | ANITILE_ALWAYS_TRANSLUCENT;
	AniParams.sX									= FIXEDPT_TO_INT32( qCurrX );
	AniParams.sY									= FIXEDPT_TO_INT32( qCurrY );
	AniParams.sZ									= CONVERT_HEIGHTUNITS_TO_PIXELS( FIXEDPT_TO_INT32( qCurrZ ) );


	if ( pBullet->usFlags & ( BULLET_FLAG_MISSILE | BULLET_FLAG_TANK_CANNON ) )
	{
		strcpy( AniParams.zCachedFile, "TILECACHE\\MSLE_SMK.STI" );
	}
	else if ( pBullet->usFlags & ( BULLET_FLAG_SMALL_MISSILE ) )
	{
		strcpy( AniParams.zCachedFile, "TILECACHE\\MSLE_SMA.STI" );
	}
	else if ( pBullet->usFlags & ( BULLET_FLAG_CREATURE_SPIT ) )
	{
		strcpy( AniParams.zCachedFile, "TILECACHE\\MSLE_SPT.STI" );
	}
	else if ( pBullet->usFlags & ( BULLET_FLAG_FLAME ) )
	{
		strcpy( AniParams.zCachedFile, "TILECACHE\\FLMTHR2.STI" );
		AniParams.sDelay							= (INT16)( 100 );
	}

	CreateAnimationTile( &AniParams );
}


BOOLEAN SaveBulletStructureToSaveGameFile( HWFILE hFile )
{
	UINT32	uiNumBytesWritten;
	UINT16	usCnt;
	UINT32	uiBulletCount=0;

	//loop through and count the number of bullets
	for( usCnt=0; usCnt<NUM_BULLET_SLOTS; usCnt++ )
	{
		//if the bullet is active, save it
		if( gBullets[ usCnt ].fAllocated )
		{
			uiBulletCount++;
		}
	}

	//Save the number of Bullets in the array
	FileWrite( hFile, &uiBulletCount, sizeof( UINT32 ), &uiNumBytesWritten );
	if( uiNumBytesWritten != sizeof( UINT32 ) )
	{
		return( FALSE );
	}

	if( uiBulletCount != 0 )
	{
		for( usCnt=0; usCnt<NUM_BULLET_SLOTS; usCnt++ )
		{
			//if the bullet is active, save it
			if( gBullets[ usCnt ].fAllocated )
			{
				//Save the the Bullet structure
				FileWrite( hFile, &gBullets[usCnt], sizeof( BULLET ), &uiNumBytesWritten );
				if( uiNumBytesWritten != sizeof( BULLET ) )
				{
					return( FALSE );
				}
			}
		}
	}

	return( TRUE );
}


BOOLEAN LoadBulletStructureFromSavedGameFile( HWFILE hFile )
{
	UINT32	uiNumBytesRead;
	UINT16	usCnt;

	//make sure the bullets are not allocated
	memset( gBullets, 0, NUM_BULLET_SLOTS * sizeof( BULLET ) );

	//Load the number of Bullets in the array
	FileRead( hFile, &guiNumBullets, sizeof( UINT32 ), &uiNumBytesRead );
	if( uiNumBytesRead != sizeof( UINT32 ) )
	{
		return( FALSE );
	}

	for( usCnt=0; usCnt<guiNumBullets; usCnt++ )
	{
		//Load the the Bullet structure
		FileRead( hFile, &gBullets[usCnt], sizeof( BULLET ), &uiNumBytesRead );
		if( uiNumBytesRead != sizeof( BULLET ) )
		{
			return( FALSE );
		}

		//Set some parameters 
		gBullets[usCnt].uiLastUpdate = 0;
		if( gBullets[usCnt].ubFirerID != NOBODY )
			gBullets[usCnt].pFirer = &Menptr[ gBullets[usCnt].ubFirerID ];
		else
			gBullets[usCnt].pFirer = NULL;

		gBullets[usCnt].pAniTile = NULL;
		gBullets[usCnt].pShadowAniTile = NULL;
		gBullets[usCnt].iBullet = usCnt;

		HandleBulletSpecialFlags( gBullets[usCnt].iBullet );
	}

	return( TRUE );
}

void StopBullet( INT32 iBullet )
{
	gBullets[ iBullet ].usFlags |= BULLET_STOPPED;

	RemoveStruct( gBullets[ iBullet ].sGridNo, BULLETTILE1 );
	RemoveStruct( gBullets[ iBullet ].sGridNo, BULLETTILE2 );
}


void DeleteAllBullets( )
{
	UINT32					uiCount;

	for ( uiCount = 0; uiCount < guiNumBullets; uiCount++ )
	{
		if ( gBullets[ uiCount ].fAllocated)
		{
			// Remove from old position
			RemoveBullet( uiCount );
			gBullets[ uiCount ].fAllocated = FALSE;
		}
	}

	RecountBullets( );

}