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5d3cd64a2585d4240fd9ac17917af05aa7ee326a
Client/Library/dxx8/samples/Multimedia/Demos/Duel/gameproc.cpp
LGram16 e067522598 Initial commit: ROW Client source code 
Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-29 16:24:34 +09:00

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//-----------------------------------------------------------------------------
// File: GameProc.cpp
//
// Desc: Game processing routines
//
// Copyright (C) 1995-2001 Microsoft Corporation. All Rights Reserved.
//-----------------------------------------------------------------------------
#include <math.h>
#include "duel.h"
#include "gameproc.h"
#include "gfx.h"
#include "DPUtil.h"
#include "diutil.h"
#include "dsutil.h"
#include "lobby.h"
#include "dsound.h"
#include "stdio.h"
//-----------------------------------------------------------------------------
// Globals
//-----------------------------------------------------------------------------
extern DWORD g_dwKeys;
extern LPDIRECTDRAWSURFACE g_pddsShip[NUM_SHIP_TYPES];
extern BOOL g_bShowFrameCount;
extern LPDIRECTDRAWSURFACE g_pddsNumbers;
extern BOOL g_bHostPlayer;
extern BOOL g_bIsActive;
extern DPSESSIONDESC2* g_pdpsd;
extern HWND g_hwndMain;
extern HINSTANCE g_hInst;
extern BOOL g_bReliable;
extern BOOL g_bAsync;
extern BOOL g_bUseProtocol;
FRAG g_Frags[64]; // ship framents
BLOCKS g_Blocks; // field layout
VOID* g_pvReceiveBuffer = NULL; // buffer to store received messages
DWORD g_dwReceiveBufferSize = 0; // size of buffer
DPID g_LocalPlayerDPID; // our player id
BOOL g_bHaveHostInit; // do we need to do host initializaton
int g_nProgramState; // current state of the game
DWORD g_dwFrameCount; // used for fps calc
DWORD g_dwFramesLast; // ..
DWORD g_dwFrameTime; // ..
BOOL g_bUpdate; // TRUE if player data needs to be updated
BOOL g_bSessionLost; // did we get disconnected ?
HOSTMSG g_HostMsg; // message buffer
BLOCKHITMSG g_BlockHitMsg; // ..
SHIPHITMSG g_ShipHitMsg; // ..
ADDBLOCKMSG g_AddBlockMsg; // ..
CONTROLMSG g_ControlMsg; // ..
SYNCMSG g_SyncMsg; // ..
SoundObject* g_pBulletFiringSound = NULL;
SoundObject* g_pShipExplodeSound = NULL;
SoundObject* g_pShipEngineSound = NULL;
SoundObject* g_pShipStartSound = NULL;
SoundObject* g_pShipStopSound = NULL;
SoundObject* g_pShipBounceSound = NULL;
SoundObject* g_pBlockExplodeSound = NULL;
// Used to determine new joiner's ship type
static int g_ShipTypesUsed[NUM_SHIP_TYPES];
//-----------------------------------------------------------------------------
// Name: InitMessageBuffers()
// Desc: Sets up buffes used for sending different types of messages
//-----------------------------------------------------------------------------
VOID InitMessageBuffers()
{
g_HostMsg.byType = MSG_HOST;
g_BlockHitMsg.byType = MSG_BLOCKHIT;
g_ShipHitMsg.byType = MSG_SHIPHIT;
g_AddBlockMsg.byType = MSG_ADDBLOCK;
g_ControlMsg.byType = MSG_CONTROL;
g_SyncMsg.byType = MSG_SYNC;
}
//-----------------------------------------------------------------------------
// Name: LaunchGame()
// Desc: Sets up the game layout and launches
//-----------------------------------------------------------------------------
VOID LaunchGame()
{
HRESULT hr;
// initialize message buffers and other module globals
InitMessageBuffers();
g_bSessionLost = FALSE;
// get current session description (g_pdpsd is initialized in here)
hr = DPUtil_GetSessionDesc();
if (FAILED(hr) || (!g_pdpsd))
{
ShowError(IDS_DPLAY_ERROR_GSD);
ExitGame();
return;
}
// Is this session using the DirectPlay Protocol?
g_bUseProtocol = (g_pdpsd->dwFlags & DPSESSION_DIRECTPLAYPROTOCOL) != 0;
// update window title
UpdateTitle();
// initialize random number seed
srand((int)GetTickCount());
// clear front buffer before changing palette
EraseScreen();
FlipScreen();
// Begin collecting input
DIUtil_ReacquireInputDevices();
// init the ship type tracking
ZeroMemory( g_ShipTypesUsed, sizeof(g_ShipTypesUsed) );
// initialize us
hr = InitOurShip();
if( FAILED(hr) )
{
ExitGame();
return;
}
// get the field layout
if( g_bHostPlayer )
{
// initialize field (done only by host)
InitField();
// we have host initialization
g_bHaveHostInit = TRUE;
// start updating screen
g_bIsActive = TRUE;
}
else
{
// get it from host, if we are joining
g_bHaveHostInit = FALSE;
}
return;
}
//-----------------------------------------------------------------------------
// Name: ExitGame()
// Desc: Game termination code
//-----------------------------------------------------------------------------
VOID ExitGame()
{
// shut down app
PostMessage( g_hwndMain, WM_CLOSE, 0, 0 );
}
//-----------------------------------------------------------------------------
// Name: InitOurShip()
// Desc: Initializes our ship's initial attributes
//-----------------------------------------------------------------------------
HRESULT InitOurShip()
{
SHIP ship;
HRESULT hr;
// Wipe out everything
ZeroMemory( &ship, sizeof(ship) );
// Calculate ship type based on the number of players in the game
// we cycle through four ships (Y,R,G,B) for now.
// This old algorithm's computation will be overridden by HOST_MSG
ship.byType = (BYTE) ((g_pdpsd->dwCurrentPlayers-1) % NUM_SHIP_TYPES);
g_ShipTypesUsed[ship.byType] = 1; // our color
ship.dPosX = randInt( 0, MAX_SHIP_X );
ship.dPosY = randInt( 0, MAX_SHIP_Y );
ship.cFrame = (char)randInt( 0, MAX_SHIP_FRAME );
ship.bEnable = TRUE;
// Set our local data
hr = DPUtil_SetPlayerLocalData( g_LocalPlayerDPID, &ship, sizeof(ship) );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_SPLD);
return hr;
}
// No ship fragments
for( int i=0; i<64; i++ )
g_Frags[i].valid = FALSE;
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: SetPlayerLocalSoundDataCB()
// Desc: Initializes and registers a player's local SOUND data ONLY.
//-----------------------------------------------------------------------------
BOOL WINAPI SetPlayerLocalSoundDataCB( DPID dpId, DWORD dwPlayerType,
LPCDPNAME lpName, DWORD dwFlags,
VOID* lpContext )
{
SHIP ship;
DWORD dwSize = sizeof(ship);
HRESULT hr;
DPUtil_GetPlayerLocalData(dpId, &ship, &dwSize);
// no player data yet
if (0 == dwSize)
return TRUE;
hr = DPUtil_GetPlayerLocalData( dpId, &ship, &dwSize );
return (DP_OK == hr);
};
//-----------------------------------------------------------------------------
// Name: InitLocalSoundData()
// Desc: Initializes and registers all players' sound data ONLY
//-----------------------------------------------------------------------------
HRESULT InitLocalSoundData()
{
return DPUtil_EnumPlayers(&(g_pdpsd->guidInstance), SetPlayerLocalSoundDataCB, NULL, 0);
}
//-----------------------------------------------------------------------------
// Name: ReleaseLocalSoundData()
// Desc: Releases a single ship's local sound buffers.
//-----------------------------------------------------------------------------
VOID ReleasePlayerLocalSoundData( SHIP* pShip )
{
/*
if( FALSE == g_bSoundInitialized )
return;
for( int i=0; i<MAX_SOUNDS; i++)
{
if( pShip->pDSBuffer[i] )
{
pShip->pDSBuffer[i]->Stop();
pShip->pDSBuffer[i]->Release();
pShip->pDSBuffer[i] = NULL;
}
if( pShip->pDS3DBuffer[i] )
{
pShip->pDS3DBuffer[i]->Release();
pShip->pDS3DBuffer[i] = NULL;
}
}
*/
}
//-----------------------------------------------------------------------------
// Name: ReleasePlayerLocalData()
// Desc: Retrieves and releases a player's local data from dplay.
//-----------------------------------------------------------------------------
BOOL WINAPI ReleasePlayerLocalDataCB( DPID dpId, DWORD dwPlayerType,
LPCDPNAME lpName, DWORD dwFlags,
VOID* lpContext)
{
SHIP ship;
DWORD dwSize = sizeof(SHIP);
HRESULT hr;
hr = DPUtil_GetPlayerLocalData( dpId, &ship, &dwSize );
if( FAILED(hr) )
goto FAIL;
// no player data yet
if (0 == dwSize)
return TRUE;
ReleasePlayerLocalSoundData(&ship);
hr = DPUtil_SetPlayerLocalData(dpId, &ship, dwSize );
if (FAILED(hr))
goto FAIL;
// success
return TRUE;
FAIL:
// we failed
return FALSE;
}
//-----------------------------------------------------------------------------
// Name: ReleaseLocalData()
// Desc: Releases local data of ALL players.
//-----------------------------------------------------------------------------
VOID ReleaseLocalData()
{
if( g_nProgramState == PS_ACTIVE )
{
if( FAILED( DPUtil_EnumPlayers( &g_pdpsd->guidInstance,
ReleasePlayerLocalDataCB,
NULL, 0 ) ) )
{
ShowError(IDS_DPLAY_ERROR_EP);
}
}
};
//-----------------------------------------------------------------------------
// Name: ProcessUserInput()
// Desc: Processes any input from the user and updates our ship state
//-----------------------------------------------------------------------------
VOID ProcessUserInput( SHIP* pShip )
{
static dwOldKeys = 0;
g_bUpdate = FALSE;
// DSOUND: check if the engine was turned off
if( !(g_dwKeys & (KEY_DOWN | KEY_UP)) &&
(dwOldKeys & (KEY_DOWN | KEY_UP)) )
{
g_dwKeys |= KEY_ENGINEOFF;
g_ControlMsg.byState = (BYTE)g_dwKeys;
// let everyone know that we just turned our engine off
SendGameMessage( (GENERICMSG*)&g_ControlMsg, DPID_ALLPLAYERS );
}
// update our ship state
UpdateState( pShip, g_dwKeys );
// remember current keys for next frame
dwOldKeys = g_dwKeys;
}
//-----------------------------------------------------------------------------
// Name: UpdateState()
// Desc: Updates the current state of our ship, given user input
//-----------------------------------------------------------------------------
VOID UpdateState( SHIP* pShip, DWORD dwControls )
{
static DWORD dwTimePrevUpdate = 0;
DWORD dwTimeNow = timeGetTime();
pShip->dwKeys = dwControls;
// Ship orientation
FLOAT fAngle = (FLOAT)( ( pShip->cFrame / 40.0f ) * 2 * 3.1415926283 );
// Don't accept these keyboard inputs faster than 50
// times per second (every 20 ms)
if( dwTimeNow - dwTimePrevUpdate > 20 )
{
if( dwControls & KEY_LEFT )
{
g_bUpdate = TRUE;
pShip->cFrame--;
if( pShip->cFrame < 0 )
pShip->cFrame += MAX_SHIP_FRAME;
}
if( dwControls & KEY_RIGHT )
{
g_bUpdate = TRUE;
pShip->cFrame++;
if( pShip->cFrame >= MAX_SHIP_FRAME )
pShip->cFrame -= MAX_SHIP_FRAME;
}
if( dwControls & KEY_UP )
{
g_bUpdate = TRUE;
pShip->dVelX += sin(fAngle) * 10.0 / 1000.0;
pShip->dVelY += -cos(fAngle) * 10.0 / 1000.0;
}
if( dwControls & KEY_DOWN )
{
g_bUpdate = TRUE;
pShip->dVelX -= sin(fAngle) * 10.0 / 1000.0;
pShip->dVelY -= -cos(fAngle) * 10.0 / 1000.0;
}
dwTimePrevUpdate = dwTimeNow;
}
if( dwControls & KEY_STOP )
{
g_bUpdate = TRUE;
pShip->dVelX = 0.0;
pShip->dVelY = 0.0;
}
if( !pShip->bBulletEnable && pShip->bEnable )
{
if( dwControls & KEY_FIRE )
{
g_bUpdate = TRUE;
// launch a new bullet
pShip->dBulletPosX = (WORD)( sin(fAngle)*6.0 + 16.0 + pShip->dPosX );
pShip->dBulletPosY = (WORD)(-cos(fAngle)*6.0 + 16.0 + pShip->dPosY );
pShip->dBulletVelX = sin(fAngle)*500.0/1000.0;
pShip->dBulletVelY = -cos(fAngle)*500.0/1000.0;
pShip->bBulletEnable = TRUE;
pShip->dwBulletFrame = 0;
}
}
}
//-----------------------------------------------------------------------------
// Name: SendSync()
// Desc: Sends a sync message with the rendevous position. We are using a
// synchronization technique in which every player informs everyone else
// where the player is going to be at the end of the next sync interval.
// Based on this rendezvous position, everyone tries to move their
// corresponding ghosts to the rendezvous position by the end of the
// interval.
//-----------------------------------------------------------------------------
VOID SendSync( SHIP* pShip )
{
g_SyncMsg.byShipType = pShip->byType;
g_SyncMsg.cFrame = pShip->cFrame;
g_SyncMsg.dPosX = pShip->dPosX + pShip->dVelX*1000;
g_SyncMsg.dPosY = pShip->dPosY + pShip->dVelY*1000;
SendGameMessage( (GENERICMSG*)&g_SyncMsg, DPID_ALLPLAYERS );
}
//-----------------------------------------------------------------------------
// Name: UpdateDisplayStatus()
// Desc: Updates the disable timeout. Enables the ship if disable timeout has
// elapsed.
//-----------------------------------------------------------------------------
VOID UpdateDisplayStatus( SHIP* pShip )
{
DWORD dwTickDiff;
DWORD dwTickCount;
// current time
dwTickCount = timeGetTime();
// time elapsed since last update
dwTickDiff = dwTickCount - pShip->dwLastTick;
// timestamp
pShip->dwLastTick = dwTickCount;
// update time-out
pShip->iCountDown -= dwTickDiff;
// time-out ?
if( pShip->iCountDown < 0 )
{
// get new position and enable our lpShip
pShip->dPosX = randInt( 0, MAX_SHIP_X );
pShip->dPosY = randInt( 0, MAX_SHIP_Y );
pShip->cFrame = (char)randInt( 0, MAX_SHIP_FRAME );
pShip->bEnable = TRUE;
}
}
//-----------------------------------------------------------------------------
// Name: UpdatePosition()
// Desc: Updates our ship's position
//-----------------------------------------------------------------------------
VOID UpdatePosition( DPID dpId, SHIP* lpShip )
{
int x,y;
BYTE oldxCell, oldyCell, newxCell, newyCell, mask, col, row;
double thisTick, totalTick, xtick, ytick;
DWORD dwTickCount;
DWORD dwTickDiff;
if( !lpShip->bEnable )
return;
// how long has it been since we last updated
dwTickCount = timeGetTime();
dwTickDiff = dwTickCount - lpShip->dwLastTick;
// current timestamp
lpShip->dwLastTick = dwTickCount;
oldxCell = (int)(lpShip->dPosX+16.0) >> 4;
oldyCell = (int)(lpShip->dPosY+16.0) >> 4;
// compute new position
lpShip->dPosX += lpShip->dVelX * dwTickDiff;
lpShip->dPosY += lpShip->dVelY * dwTickDiff;
newxCell = (int)(lpShip->dPosX+16.0) >> 4;
newyCell = (int)(lpShip->dPosY+16.0) >> 4;
if(oldxCell != newxCell)
{
// we allow ghosts to pass through the blocks
if( (dpId == g_LocalPlayerDPID) && IsHit( newxCell, newyCell ) )
{
if( lpShip->dVelX > 0.0 )
lpShip->dPosX = (oldxCell << 4) + 15 - 16;
else
lpShip->dPosX = (oldxCell << 4) - 16;
lpShip->dVelX = -lpShip->dVelX*0.9;
newxCell = oldxCell;
lpShip->bBounced = TRUE;
}
}
if(oldyCell != newyCell)
{
// we allow ghosts to pass through the blocks
if( (dpId == g_LocalPlayerDPID) && IsHit( newxCell, newyCell ) )
{
if( lpShip->dVelY > 0.0 )
lpShip->dPosY = (oldyCell << 4) + 15 - 16;
else
lpShip->dPosY = (oldyCell << 4) - 16;
lpShip->dVelY = -lpShip->dVelY*0.9;
lpShip->bBounced = TRUE;
}
}
if( lpShip->dPosX > MAX_SHIP_X )
{
lpShip->dPosX = MAX_SHIP_X;
lpShip->dVelX = -lpShip->dVelX*0.9;
lpShip->bBounced = TRUE;
}
else if ( lpShip->dPosX < 0 )
{
lpShip->dPosX =0;
lpShip->dVelX = -lpShip->dVelX*0.9;
lpShip->bBounced = TRUE;
}
if( lpShip->dPosY > MAX_SHIP_Y )
{
lpShip->dPosY = MAX_SHIP_Y;
lpShip->dVelY = -lpShip->dVelY*0.9;
lpShip->bBounced = TRUE;
}
else if ( lpShip->dPosY < 0 )
{
lpShip->dPosY =0;
lpShip->dVelY = -lpShip->dVelY*0.9;
lpShip->bBounced = TRUE;
}
if ((dpId == g_LocalPlayerDPID) && lpShip->bBounced)
{
SendSync(lpShip);
}
if( !lpShip->bBulletEnable )
return;
// update the active bullet
lpShip->dwBulletFrame += dwTickDiff;
if( lpShip->dwBulletFrame >= MAX_BULLET_FRAME )
{
lpShip->bFiring = FALSE;
lpShip->bBulletEnable = FALSE;
return;
}
if( lpShip->dBulletVelX != 0.0 )
xtick = 8.0/lpShip->dBulletVelX;
else
xtick = 999999.0;
if( lpShip->dBulletVelY != 0.0 )
ytick = 8.0/lpShip->dBulletVelY;
else
ytick = 999999.0;
if( xtick < 0.0 )
xtick = -xtick;
if( ytick < 0.0 )
ytick = -ytick;
if( xtick < ytick )
thisTick = xtick;
else
thisTick = ytick;
if( thisTick > dwTickDiff )
thisTick = dwTickDiff;
for( totalTick = 0.0; totalTick < dwTickDiff; )
{
totalTick += thisTick;
lpShip->dBulletPosX += lpShip->dBulletVelX * thisTick;
lpShip->dBulletPosY += lpShip->dBulletVelY * thisTick;
if( lpShip->dBulletPosX > MAX_BULLET_X )
{
lpShip->dBulletPosX = MAX_BULLET_X;
lpShip->dBulletVelX = -lpShip->dBulletVelX*0.9;
}
else if ( lpShip->dBulletPosX < 0 )
{
lpShip->dBulletPosX =0;
lpShip->dBulletVelX = -lpShip->dBulletVelX*0.9;
}
if( lpShip->dBulletPosY > MAX_BULLET_Y )
{
lpShip->dBulletPosY = MAX_BULLET_Y;
lpShip->dBulletVelY = -lpShip->dBulletVelY*0.9;
}
else if ( lpShip->dBulletPosY < 0 )
{
lpShip->dBulletPosY =0;
lpShip->dBulletVelY = -lpShip->dBulletVelY*0.9;
}
// check to see if it hit anything
x = (int)(lpShip->dBulletPosX + 0.5) + 1;
y = (int)(lpShip->dBulletPosY + 0.5) + 1;
row = y >> 4;
col = x >> 4;
mask = 1 << (col & 0x7);
col = col >> 3;
if( g_Blocks.bits[row][col] & mask )
{
// dwScored a block hit
g_BlockHitMsg.byRow = row;
g_BlockHitMsg.byCol = col;
g_BlockHitMsg.byMask = mask;
SendGameMessage( (GENERICMSG*)&g_BlockHitMsg, DPID_ALLPLAYERS);
g_Blocks.bits[row][col] &= ~mask;
lpShip->dwScore += 10;
lpShip->bBulletEnable = FALSE;
lpShip->bBlockHit = TRUE;
lpShip->bFiring = FALSE;
}
}
}
//-----------------------------------------------------------------------------
// Name: IsHit()
// Desc: Tells if there is a block at (x,y) location
//-----------------------------------------------------------------------------
BOOL IsHit( int x, int y )
{
int col, mask;
// outside screen boundaries?
if( (x < 0) || (y < 0) || (x >= 40) || (y >= 30) )
return TRUE;
// look at the block bits
mask = 1 << (x & 0x7);
col = x >> 3;
if( g_Blocks.bits[y][col] & mask )
return TRUE;
else
return FALSE;
}
//-----------------------------------------------------------------------------
// Name: InitField
// Desc: Initializes block positions on the field
//-----------------------------------------------------------------------------
VOID InitField()
{
int i, x, y;
// clear all g_Blocks
for(x=0; x<5; x++)
for(y=0; y<30; y++)
g_Blocks.bits[y][x] = 0;
// set random gBlocks
for(i=0; i<400; i++)
{
x = randInt(0, 40);
y = randInt(0, 30);
if( !setBlock(x, y) ) i--;
}
}
//-----------------------------------------------------------------------------
// Name: AddBlock()
// Desc: Adds a block to the field
//-----------------------------------------------------------------------------
VOID AddBlock()
{
// Maybe add a block?
if( g_bHostPlayer && g_bIsActive && ( randInt( 0, 100 ) > 98 ) )
{
int x = randInt( 0, 40);
int y = randInt( 0, 30);
if( setBlock( x, y) )
{
g_AddBlockMsg.byX = (BYTE)x;
g_AddBlockMsg.byY = (BYTE)y;
SendGameMessage( (GENERICMSG*)&g_AddBlockMsg, DPID_ALLPLAYERS );
}
}
}
//-----------------------------------------------------------------------------
// Name: setBlock()
// Desc: Turns on a block
//-----------------------------------------------------------------------------
BOOL setBlock( int x, int y )
{
BYTE mask, col;
mask = 1 << (x & 0x7);
col = x >> 3;
// is Block already set?
if( g_Blocks.bits[y][col] & mask )
return FALSE;
// set the block and return success
g_Blocks.bits[y][col] |= mask;
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: AddFrag()
// Desc: Turns on a fragment
//-----------------------------------------------------------------------------
VOID AddFrag( SHIP* pShip, int offX, int offY )
{
for( int i=0; i<64; i++ ) // Find available fragment
{
if( !g_Frags[i].valid )
break;
}
if( i == 64 )
return;
g_Frags[i].dPosX = offX + pShip->dPosX;
g_Frags[i].dPosY = offY + pShip->dPosY;
g_Frags[i].pdds = g_pddsShip[pShip->byType];
g_Frags[i].src.top = 32 * ( (int)pShip->cFrame / 10 ) + offX;
g_Frags[i].src.left = 32 * ( (int)pShip->cFrame % 10 ) + offY;
g_Frags[i].src.right = g_Frags[i].src.left + 8;
g_Frags[i].src.bottom = g_Frags[i].src.top + 8;
g_Frags[i].dVelX = ((double)offX - 12.0)/24.0;
g_Frags[i].dVelY = ((double)offY - 12.0)/24.0;
g_Frags[i].valid = TRUE;
}
//-----------------------------------------------------------------------------
// Name: UpdateFragment()
// Desc: Updates the position of a fragment
//-----------------------------------------------------------------------------
VOID UpdateFragment( int i )
{
DWORD dwTickCount;
static DWORD dwTickDiff;
static DWORD dwLastTick;
if( i == 0 )
{
dwTickCount = timeGetTime();
dwTickDiff = dwTickCount - dwLastTick;
dwLastTick = dwTickCount;
// If the FPS is high, keep the fragments moving
if( dwTickDiff < 10 )
dwTickDiff = 10;
}
if( !g_Frags[i].valid )
return;
g_Frags[i].dPosX += (int) (g_Frags[i].dVelX * dwTickDiff);
g_Frags[i].dPosY += (int) (g_Frags[i].dVelY * dwTickDiff);
if( (g_Frags[i].dPosX < 0.0) || (g_Frags[i].dPosX >= 632.0) ||
(g_Frags[i].dPosY < 0.0) || (g_Frags[i].dPosY >= 472.0) )
{
g_Frags[i].valid = FALSE;
}
}
//-----------------------------------------------------------------------------
// Name: DestroyShip()
// Desc: Adds a bunch of fragments to show that the ship is destroyed
//-----------------------------------------------------------------------------
VOID DestroyShip( SHIP* pShip )
{
// Set flag for explosion sound
pShip->bDeath = TRUE;
// Add ship fragments
AddFrag( pShip, 0, 0 );
AddFrag( pShip, 8, 0 );
AddFrag( pShip, 16, 0 );
AddFrag( pShip, 24, 0 );
AddFrag( pShip, 0, 8 );
AddFrag( pShip, 8, 8 );
AddFrag( pShip, 16, 8 );
AddFrag( pShip, 24, 8 );
AddFrag( pShip, 0, 16 );
AddFrag( pShip, 8, 16 );
AddFrag( pShip, 16, 16 );
AddFrag( pShip, 24, 16 );
AddFrag( pShip, 0, 24 );
AddFrag( pShip, 8, 24 );
AddFrag( pShip, 16, 24 );
AddFrag( pShip, 24, 24 );
// Play explosion sound
ProcessSoundFlags( pShip );
}
//-----------------------------------------------------------------------------
// Name: UpdateFrame()
// Desc: Refreshes the screen
//-----------------------------------------------------------------------------
BOOL UpdateFrame()
{
static DWORD dwSyncLastTick = 0L;
static DWORD dwUpdateLastTick = 0L;
static DWORD dwLobbyMsgLastTick = 0L;
DWORD dwTickCount;
SHIP ship;
DWORD dwSize;
HRESULT hr;
int i;
switch( g_nProgramState )
{
case PS_ACTIVE:
// Use DirectInput to read game-play keys
DIUtil_ReadKeys( &g_dwKeys );
// get our local data
dwSize = sizeof(ship);
hr = DPUtil_GetPlayerLocalData( g_LocalPlayerDPID, &ship, &dwSize );
if( FAILED(hr) )
return FALSE;
if( !ship.bEnable )
{
// Ppdate disable timeout and display status
UpdateDisplayStatus( &ship );
}
else
{
// Process any change in game controls
ProcessUserInput( &ship );
dwTickCount = timeGetTime();
// Synchronize if it's time
if( g_bIsActive && ((dwTickCount - dwSyncLastTick) > SYNC_INTERVAL) )
{
SendSync( &ship );
dwSyncLastTick = dwTickCount;
}
// If our player changed any keys, let everyone know
if( g_bUpdate )
{
// Control the number of packets we send
if( (dwTickCount - dwUpdateLastTick) > UPDATE_INTERVAL )
{
// Let others know
g_ControlMsg.byState = (BYTE)g_dwKeys;
SendGameMessage( (GENERICMSG*)&g_ControlMsg, DPID_ALLPLAYERS );
dwUpdateLastTick = dwTickCount;
}
}
// If connected to a lobby, occasionally report score as a property
if( DoingLobbyMessages() &&
(dwTickCount - dwLobbyMsgLastTick) > 10000 ) // every 10 sec
{
DPLDATA_PLAYERSCORE playerScore;
ZeroMemory(&playerScore, sizeof(DPLDATA_PLAYERSCORE));
playerScore.dwScoreCount = 1;
playerScore.Score[0] = (LONG)ship.dwScore;
LobbyMessageSetProperty( &DPLPROPERTY_PlayerScore, &playerScore,
sizeof(DPLDATA_PLAYERSCORE));
dwLobbyMsgLastTick = dwTickCount;
}
}
// Save ship data as RenderPlayerCB reads stored data
hr = DPUtil_SetPlayerLocalData( g_LocalPlayerDPID, &ship, sizeof(ship) );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_SPLD);
return FALSE;
}
// Update fragments
for( i=0; i<64; i++ )
UpdateFragment(i);
// Add a block
AddBlock();
// Render everything
if( !DrawScreen() )
{
return FALSE;
}
break;
case PS_REST:
if( g_bHaveHostInit )
{
SetGamePalette();
g_nProgramState = PS_ACTIVE;
}
break;
}
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: ProcessSoundFlags()
// Desc:
//-----------------------------------------------------------------------------
VOID ProcessSoundFlags( SHIP* pShip )
{
// Get object positions for panning sounds
RECT rc;
GetClientRect( g_hwndMain, &rc );
FLOAT fShipXPos = (FLOAT)( ( 2 * pShip->dPosX ) / rc.right ) - 1;
FLOAT fShipYpos = (FLOAT)( (-2 * pShip->dPosY ) / rc.bottom ) - 1;
FLOAT fBulletXPos = (FLOAT)( ( 2 * pShip->dPosX ) / rc.right ) - 1;
FLOAT fBulletYpos = (FLOAT)( (-2 * pShip->dPosY ) / rc.bottom ) - 1;
// Set sound state based on user input and ship state
if( pShip->bDeath ) // nothing but the boom
{
DSUtil_StopSound( g_pBulletFiringSound );
DSUtil_StopSound( g_pShipBounceSound );
DSUtil_StopSound( g_pShipStopSound );
DSUtil_StopSound( g_pShipStartSound );
DSUtil_StopSound( g_pShipEngineSound );
DSUtil_PlaySound( g_pShipExplodeSound, 0 );
pShip->bEngineRunning = FALSE;
pShip->bMoving = FALSE;
pShip->dwKeys = 0; // No input for a dead ship
pShip->bDeath = FALSE; // Turn off sound flag.
}
if( pShip->dwKeys & KEY_STOP )
{
if( pShip->bMoving )
{
DSUtil_StopSound( g_pShipEngineSound );
DSUtil_PlaySound( g_pShipStopSound, 0 );
pShip->bEngineRunning = FALSE;
pShip->bMoving = FALSE;
}
}
if( pShip->dwKeys & KEY_ENGINEOFF )
{
DSUtil_StopSound( g_pShipEngineSound );
pShip->bEngineRunning = FALSE;
}
if( pShip->dwKeys & (KEY_UP | KEY_DOWN) )
{
if( !pShip->bEngineRunning ) // Turn on engine
{
DSUtil_PlaySound( g_pShipEngineSound, DSBPLAY_LOOPING );
if( !pShip->bMoving ) //"fire-up-engine" sound
{
DSUtil_PlayPannedSound( g_pShipStartSound, fShipXPos );
pShip->bMoving = TRUE;
}
pShip->bEngineRunning = TRUE;
}
}
if( pShip->dwKeys & KEY_FIRE )
{
if( !pShip->bFiring )
{
DSUtil_PlayPannedSound( g_pBulletFiringSound, fShipXPos );
pShip->bFiring = TRUE;
}
}
if( pShip->bBlockHit )
{
DSUtil_PlayPannedSound( g_pBlockExplodeSound, fBulletXPos );
pShip->bBlockHit = FALSE;
}
if( pShip->bBounced )
{
DSUtil_PlayPannedSound( g_pShipBounceSound, fShipXPos );
pShip->bBounced = FALSE;
}
pShip->dwKeys = 0;
}
//-----------------------------------------------------------------------------
// Name: RenderPlayerCB()
// Desc: Renders a ship in its current state. Also checks if we hit the ship
// and informs the ship that it has been destroyed.
//-----------------------------------------------------------------------------
BOOL WINAPI RenderPlayerCB( DPID dpId, DWORD dwPlayerType, LPCDPNAME lpName,
DWORD dwFlags, VOID* lpContext )
{
SHIP ship;
SHIP ourShip;
DWORD dwSize = sizeof(ship);
BOOL bHit = FALSE;
HRESULT hr;
DWORD dwTickCount;
// Get ship data
hr = DPUtil_GetPlayerLocalData( dpId, &ship, &dwSize );
if( FAILED(hr) )
return FALSE;
// No player data yet
if( 0 == dwSize )
return TRUE;
// Ignore current ship ?
if( ship.bIgnore )
{
// If this ship was being ignored, update ignore time-out
// A time-out is used here to ensure that this ship doesn't get ignored
// forever on our screen in case the destroy message was dropped.
dwTickCount = timeGetTime();
ship.iCountDown -= dwTickCount - ship.dwLastTick;
ship.dwLastTick = dwTickCount;
if( ship.iCountDown < 0 )
{
ship.bIgnore = FALSE;
}
// Save ship data
hr = DPUtil_SetPlayerLocalData( dpId, &ship, sizeof(ship) );
if( FAILED(hr) )
return FALSE;
// We are ignoring this ship, so just bail
return TRUE;
}
// Bail if ship is disabled
if( !ship.bEnable)
return TRUE;
// Update ship's position
UpdatePosition( dpId, &ship );
// Get our player data to compare with others
dwSize = sizeof(ship);
hr = DPUtil_GetPlayerLocalData( g_LocalPlayerDPID, &ourShip, &dwSize );
if( FAILED(hr) )
return FALSE;
// Check if our bullet hit the current ship
if( (dpId != g_LocalPlayerDPID) && ourShip.bBulletEnable && ship.bEnable )
{
if( (ourShip.dBulletPosX > ship.dPosX) &&
(ourShip.dBulletPosX < (ship.dPosX + 32.0) ) &&
(ourShip.dBulletPosY > ship.dPosY) &&
(ourShip.dBulletPosY < (ship.dPosY + 32.0) ) )
{
// Hasta-la-vista baby
DestroyShip( &ship );
// We nailed it
bHit = TRUE;
// Turn off ship locally
ship.bEnable = FALSE;
// Temporarily ignore ship until we get a response
ship.bIgnore = TRUE;
// Set its ignore time-out
ship.iCountDown = HIDE_TIMEOUT;
// Time-stamp
ship.dwLastTick = timeGetTime();
// Turn our bullet off
ship.bBulletEnable = FALSE;
// Update our score
ourShip.dwScore += 1000;
// Save our score
hr = DPUtil_SetPlayerLocalData( g_LocalPlayerDPID, &ourShip, sizeof(ourShip) );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_SPLD);
return FALSE;
}
}
}
// Render the ship
if( ship.bBulletEnable ) DrawBullet(&ship);
if( ship.bEnable ) DrawShip(&ship);
ProcessSoundFlags( &ship );
// Save ship data
hr = DPUtil_SetPlayerLocalData( dpId, &ship, sizeof(ship) );
if( FAILED(hr) )
return FALSE;
// Inform the player
if( bHit )
{
g_ShipHitMsg.Id = dpId;
SendGameMessage( (GENERICMSG*)&g_ShipHitMsg, dpId );
}
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: DrawScreen()
// Desc: Renders the current frame
//-----------------------------------------------------------------------------
BOOL DrawScreen()
{
HRESULT hr;
// Clear screen
EraseScreen();
// Render players
hr = DPUtil_EnumPlayers( NULL, RenderPlayerCB, NULL, 0 );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_EP);
return FALSE;
}
// Render field
for( int y=0; y<30; y++ )
{
for( int x=0; x<40; x++ )
{
BYTE mask = 1 << (x & 0x7);
BYTE col = x >> 3;
if( g_Blocks.bits[y][col] & mask )
DrawBlock( x, y );
}
}
// Render score
if (!DrawScore())
return FALSE;
// Render fragments
DrawFragments();
// Render frame rate
if( g_bShowFrameCount )
DisplayFrameRate();
// Show
FlipScreen();
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: DisplayFrameRate()
// Desc: Renders current frame rate
//-----------------------------------------------------------------------------
VOID DisplayFrameRate()
{
static DWORD dwFrames = 0;
g_dwFrameCount++;
DWORD dwTime = timeGetTime() - g_dwFrameTime;
if( dwTime > 1000 )
{
dwFrames = (g_dwFrameCount*1000)/dwTime;
g_dwFrameTime = timeGetTime();
g_dwFrameCount = 0;
}
if( dwFrames == 0 )
return;
if (dwFrames != g_dwFramesLast)
g_dwFramesLast = dwFrames;
char strFPS[256];
sprintf( strFPS, "%d", dwFrames );
BltNumber( strFPS, 295, 10);
}
//-----------------------------------------------------------------------------
// Name: DrawScore()
// Desc: Renders our current score
//-----------------------------------------------------------------------------
BOOL DrawScore()
{
SHIP ship;
DWORD dwSize;
CHAR strScore[11];
int rem;
HRESULT hr;
dwSize = sizeof(ship);
hr = DPUtil_GetPlayerLocalData( g_LocalPlayerDPID, &ship, &dwSize );
if( FAILED(hr) )
return FALSE;
// Calculate dwScore string
strScore[0] = (BYTE)ship.dwScore/100000 + '0';
rem = ship.dwScore % 100000;
strScore[1] = rem/10000 + '0';
rem = ship.dwScore % 10000;
strScore[2] = rem/1000 + '0';
rem = ship.dwScore % 1000;
strScore[3] = rem/100 + '0';
rem = ship.dwScore % 100;
strScore[4] = rem/10 + '0';
rem = ship.dwScore % 10;
strScore[5] = rem + '0';
strScore[6] = '\0';
// Blt score
BltNumber( strScore, 8, 8 );
// Save ship data
hr = DPUtil_SetPlayerLocalData( g_LocalPlayerDPID, &ship, sizeof(ship) );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_SPLD);
return FALSE;
}
return TRUE;
}
//-----------------------------------------------------------------------------
// Name: DrawBlock()
// Desc: Renders a block
//-----------------------------------------------------------------------------
VOID DrawBlock( int x, int y )
{
RECT src;
src.top = 0;
src.left = 224;
src.right = src.left + 16;
src.bottom = src.top + 16;
BltObject( x << 4, y << 4, g_pddsNumbers, &src, DDBLTFAST_SRCCOLORKEY );
}
//-----------------------------------------------------------------------------
// Name: DrawShip()
// Desc: Renders a ship
//-----------------------------------------------------------------------------
VOID DrawShip( SHIP* pShip )
{
RECT src;
src.top = 32 * (pShip->cFrame / 10 );
src.left = 32 * (pShip->cFrame % 10 );
src.right = src.left + 32;
src.bottom = src.top + 32;
BltObject( (int)pShip->dPosX, (int)pShip->dPosY, g_pddsShip[pShip->byType],
&src, DDBLTFAST_SRCCOLORKEY );
}
//-----------------------------------------------------------------------------
// Name: DrawBullet()
// Desc: Renders a bullet
//-----------------------------------------------------------------------------
VOID DrawBullet( SHIP* pShip )
{
RECT src;
src.top = BULLET_Y;
src.left = BULLET_X + (pShip->byType)*4;
src.right = src.left + 3;
src.bottom = src.top + 3;
BltObject( (int)pShip->dBulletPosX, (int)pShip->dBulletPosY, g_pddsNumbers,
&src, DDBLTFAST_SRCCOLORKEY );
}
//-----------------------------------------------------------------------------
// Name: DrawFragments()
// Desc: Renders the fragments
//-----------------------------------------------------------------------------
VOID DrawFragments()
{
for( int i=0; i<64; i++)
{
if( g_Frags[i].valid )
{
BltObject( (int)g_Frags[i].dPosX, (int)g_Frags[i].dPosY,
g_Frags[i].pdds, &g_Frags[i].src,
DDBLTFAST_SRCCOLORKEY );
}
}
}
//-----------------------------------------------------------------------------
// Name: ReceiveGameMessages()
// Desc: Checks if there are any messages for us and receives them
//-----------------------------------------------------------------------------
HRESULT ReceiveMessages()
{
DPID idFrom, idTo;
LPVOID pvMsgBuffer;
DWORD dwMsgBufferSize;
HRESULT hr;
// read all messages in queue
dwMsgBufferSize = g_dwReceiveBufferSize;
pvMsgBuffer = g_pvReceiveBuffer;
while( TRUE )
{
// See what's out there
idFrom = 0;
idTo = 0;
hr = DPUtil_Receive( &idFrom, &idTo, DPRECEIVE_ALL, pvMsgBuffer,
&dwMsgBufferSize );
if( hr == DPERR_BUFFERTOOSMALL )
{
if( pvMsgBuffer == NULL )
{
pvMsgBuffer = GlobalAllocPtr( GHND, dwMsgBufferSize );
if( pvMsgBuffer == NULL )
return DPERR_NOMEMORY;
g_pvReceiveBuffer = pvMsgBuffer;
g_dwReceiveBufferSize = dwMsgBufferSize;
}
else if( dwMsgBufferSize > g_dwReceiveBufferSize )
{
pvMsgBuffer = GlobalReAllocPtr( pvMsgBuffer, dwMsgBufferSize, 0 );
if( pvMsgBuffer == NULL )
return DPERR_NOMEMORY;
g_pvReceiveBuffer = pvMsgBuffer;
g_dwReceiveBufferSize = dwMsgBufferSize;
}
}
else if( SUCCEEDED(hr) &&
( (dwMsgBufferSize >= sizeof(GENERICMSG)) ||
(dwMsgBufferSize >= sizeof(DPMSG_GENERIC) ) ) )
{
if( idFrom == DPID_SYSMSG )
{
DoSystemMessage( (DPMSG_GENERIC*)pvMsgBuffer, dwMsgBufferSize,
idFrom, idTo );
}
else
{
DoApplicationMessage( (GENERICMSG*)pvMsgBuffer, dwMsgBufferSize,
idFrom, idTo );
}
}
else
break;
}
return hr;
}
//-----------------------------------------------------------------------------
// Name: DoSystemMessage()
// Desc: Evaluates system messages and performs appropriate actions
//-----------------------------------------------------------------------------
VOID DoSystemMessage( DPMSG_GENERIC* pMsg, DWORD dwMsgSize, DPID idFrom,
DPID idTo )
{
switch( pMsg->dwType )
{
case DPSYS_CREATEPLAYERORGROUP:
{
DPMSG_CREATEPLAYERORGROUP* pAddMsg = (DPMSG_CREATEPLAYERORGROUP*)pMsg;
int iLeastAmt = -1;
int iLeastType = -1;
int i;
if( g_bHostPlayer)
{
g_HostMsg.Blocks = g_Blocks;
//Copy the used ship types array into the message to be sent
for( i = 0; i < NUM_SHIP_TYPES; i++ )
g_HostMsg.usedShipTypes[i] = g_ShipTypesUsed[i];
SendGameMessage( (GENERICMSG*)&g_HostMsg, pAddMsg->dpId );
}
// Loop through the used ship types array and find the one that's been used the least
for( i = 0; i < NUM_SHIP_TYPES; i++ )
{
if( (iLeastAmt < 0) || (g_ShipTypesUsed[i] < iLeastAmt) )
{
iLeastAmt = g_ShipTypesUsed[i];
iLeastType = i;
}
}
g_ShipTypesUsed[iLeastType]++; // update our copy of the used ship types
break;
}
case DPSYS_DESTROYPLAYERORGROUP:
{
SHIP* pShip;
DPMSG_DESTROYPLAYERORGROUP* pDestroyMsg = (DPMSG_DESTROYPLAYERORGROUP*)pMsg;
if( (sizeof(SHIP) != pDestroyMsg->dwLocalDataSize) ||
(NULL == pDestroyMsg->lpLocalData))
break;
pShip = (SHIP*)pDestroyMsg->lpLocalData;
g_ShipTypesUsed[pShip->byType]--; // decrement the leaving players' ship type usage counter
ReleasePlayerLocalSoundData(pShip);
break;
}
case DPSYS_HOST:
{
g_bHostPlayer = TRUE;
UpdateTitle();
break;
}
case DPSYS_SESSIONLOST:
// inform user that session was lost
TRACE(_T("Session lost\n"));
if( !g_bSessionLost )
{
g_bSessionLost = TRUE;
ShowError(IDS_DPLAY_ERROR_SL);
}
break;
case DPSYS_SENDCOMPLETE:
// Async send status
{
DPMSG_SENDCOMPLETE* pComplete = (DPMSG_SENDCOMPLETE*)pMsg;
if( FAILED(pComplete->hr) )
{
TCHAR* strErr;
switch( pComplete->hr )
{
case DPERR_CANCELLED: strErr = _T("Cancelled"); break;
case DPERR_ABORTED: strErr = _T("Aborted"); break;
case DPERR_TIMEOUT: strErr = _T("Timed out"); break;
case DPERR_GENERIC: strErr = _T("Generic"); break;
default: strErr = _T("Unknown");
}
TRACE(_T("Async msg %u to %u transmission failed. err = %s %#08X\n"),
pComplete->dwMsgID, pComplete->idTo, strErr,
pComplete->hr );
}
break;
}
}
}
//-----------------------------------------------------------------------------
// Name: DoApplicationMessage()
// Desc: Evaluates an application message and performs appropriate actions
//-----------------------------------------------------------------------------
VOID DoApplicationMessage( GENERICMSG* pMsg, DWORD dwMsgSize, DPID idFrom,
DPID idTo )
{
HRESULT hr;
switch( pMsg->byType )
{
case MSG_HOST:
{
HOSTMSG* pHostMsg = (HOSTMSG*)pMsg;
SHIP ship;
DWORD dwSize = sizeof (ship);
int leastUsed = -1;
if( !g_bHostPlayer )
{
// receive the field layout
g_Blocks = pHostMsg->Blocks;
// The Host keeps the official record of ship colors in use.
// Sync up our data and recompute our color
hr = DPUtil_GetPlayerLocalData( g_LocalPlayerDPID, &ship, &dwSize );
// Insure that host is not a Beta version of Duel that does not
// send the additional ShipTypesUsed.
if( SUCCEEDED(hr) && dwMsgSize >= sizeof(HOSTMSG) )
{
// Loop through the used ship types array we were given,
// copying it and finding the least used type for ourself.
for( int i = 0; i < NUM_SHIP_TYPES; i++ )
{
g_ShipTypesUsed[i] = pHostMsg->usedShipTypes[i];
if( (leastUsed < 0) || (g_ShipTypesUsed[i] < leastUsed) )
{
leastUsed = g_ShipTypesUsed[i];
ship.byType = (BYTE)i;
}
}
g_ShipTypesUsed[ship.byType]++; // increment it because we used one
hr = DPUtil_SetPlayerLocalData( g_LocalPlayerDPID, &ship, dwSize );
}
// Have host initializtion at this point
g_bHaveHostInit = TRUE;
// Start updating screen
g_bIsActive = TRUE;
}
break;
}
case MSG_BLOCKHIT:
{
BLOCKHITMSG* pBlockHitMsg = (BLOCKHITMSG*)pMsg;
g_Blocks.bits[pBlockHitMsg->byRow][pBlockHitMsg->byCol] &= ~pBlockHitMsg->byMask;
break;
}
case MSG_ADDBLOCK:
{
ADDBLOCKMSG* pAddBlockMsg = (ADDBLOCKMSG*)pMsg;
setBlock( pAddBlockMsg->byX, pAddBlockMsg->byY );
break;
}
case MSG_SHIPHIT:
{
SHIPHITMSG* pShipHitMsg = (SHIPHITMSG*)pMsg;
SHIP ship;
DWORD dwSize;
dwSize = sizeof(SHIP);
// Get player local data
hr = DPUtil_GetPlayerLocalData( pShipHitMsg->Id, &ship, &dwSize );
if( FAILED(hr) )
return;
// No player data yet
if( 0 == dwSize )
return;
if( !ship.bIgnore )
{
// Explode the ship on our screen
DestroyShip( &ship );
// Turn it off
ship.bEnable = FALSE;
ship.bBulletEnable = FALSE;
// If it is us
if( pShipHitMsg->Id == g_LocalPlayerDPID )
{
// Set our hide time-out
ship.iCountDown = HIDE_TIMEOUT;
ship.dwLastTick = timeGetTime();
// Let the world know that we are dead
g_ShipHitMsg.Id = g_LocalPlayerDPID;
SendGameMessage( (GENERICMSG*)&g_ShipHitMsg, DPID_ALLPLAYERS );
}
}
// Ppdate player local data
DPUtil_SetPlayerLocalData( pShipHitMsg->Id, &ship, sizeof(ship) );
break;
}
case MSG_CONTROL:
{
CONTROLMSG* pControlMsg = (CONTROLMSG*)pMsg;
SHIP ship;
DWORD dwSize;
dwSize = sizeof(SHIP);
// Get player local data
hr = DPUtil_GetPlayerLocalData( idFrom, &ship, &dwSize );
if( FAILED(hr) )
return;
// No player data yet
if( 0 == dwSize )
return;
// Update its State
UpdateState( &ship, (DWORD)pControlMsg->byState );
// Save it back
DPUtil_SetPlayerLocalData( idFrom, &ship, dwSize );
break;
}
case MSG_SYNC:
{
SYNCMSG* pSyncMsg = (SYNCMSG*)pMsg;
SHIP ship;
DWORD dwSize;
dwSize = sizeof(SHIP);
// Get player local data
hr = DPUtil_GetPlayerLocalData( idFrom, &ship, &dwSize );
if( FAILED(hr) )
return;
// We are seeing this player for the first time
// so do the initialization
if( 0 == dwSize )
{
ZeroMemory( &ship, sizeof(ship) );
ship.byType = pSyncMsg->byShipType;
ship.dPosX = pSyncMsg->dPosX;
ship.dPosY = pSyncMsg->dPosY;
ship.cFrame = pSyncMsg->cFrame;
ship.dwLastTick = timeGetTime();
ship.bEnable = TRUE;
}
if( ship.bEnable )
{
// Head towards rendezvous location (accelerate/decelerate as necessary)
ship.dVelX = (pSyncMsg->dPosX - ship.dPosX)/1000;
ship.dVelY = (pSyncMsg->dPosY - ship.dPosY)/1000;
ship.cFrame = pSyncMsg->cFrame;
}
else if( !ship.bIgnore )
{
// Ship is alive, but we just don't know it.
// So, display it at the rendezvous location.
ship.dPosX = pSyncMsg->dPosX;
ship.dPosY = pSyncMsg->dPosY;
ship.cFrame = pSyncMsg->cFrame;
ship.dwLastTick = timeGetTime();
ship.bEnable = TRUE;
}
// Save it back
DPUtil_SetPlayerLocalData( idFrom, &ship, sizeof(ship) );
break;
}
default:
{
TRACE( TEXT("Unknown message type %d\n"), pMsg->byType );
break;
}
}
}
//-----------------------------------------------------------------------------
// Name: SendGameMessage()
// Desc: Sends a message to specified player(s)
//-----------------------------------------------------------------------------
VOID SendGameMessage( GENERICMSG* pMsg, DPID idTo )
{
int nBytes;
DWORD dwFlags = 0;
// No sends when we are not in the session
if( g_bSessionLost )
return;
switch( pMsg->byType )
{
case MSG_HOST:
nBytes = sizeof( HOSTMSG );
dwFlags = DPSEND_GUARANTEED;
break;
case MSG_BLOCKHIT:
nBytes = sizeof( BLOCKHITMSG );
break;
case MSG_SHIPHIT:
nBytes = sizeof( SHIPHITMSG );
break;
case MSG_ADDBLOCK:
nBytes = sizeof( ADDBLOCKMSG );
break;
case MSG_CONTROL:
nBytes = sizeof( CONTROLMSG );
break;
case MSG_SYNC:
nBytes = sizeof( SYNCMSG );
break;
default:
return;
}
if( g_bAsync )
dwFlags |= DPSEND_ASYNC;
if( g_bReliable )
dwFlags |= DPSEND_GUARANTEED;
// Send the message to the relevant player(s)
DPUtil_Send( g_LocalPlayerDPID, idTo, dwFlags, (VOID*)pMsg, nBytes );
}
//-----------------------------------------------------------------------------
// Name: CleanupComm()
// Desc: Cleans up communication stuff
//-----------------------------------------------------------------------------
VOID CleanupComm()
{
HRESULT hr;
// Free up all the local sound buffers
ReleaseLocalData();
// Free the receive buffer
if( g_pvReceiveBuffer )
{
GlobalFreePtr(g_pvReceiveBuffer);
g_pvReceiveBuffer = NULL;
}
// Delete our player
if( g_LocalPlayerDPID )
{
hr = DPUtil_DestroyPlayer( g_LocalPlayerDPID );
if( FAILED(hr) )
{
ShowError(IDS_DPLAY_ERROR_DP);
}
g_LocalPlayerDPID = 0;
}
// Cleanup DPlay objects
hr = DPUtil_FreeDirectPlay();
hr = DPUtil_Release();
}
//-----------------------------------------------------------------------------
// Name: InitializeGameSounds()
// Desc:
//-----------------------------------------------------------------------------
HRESULT InitializeGameSounds()
{
if( FAILED( DSUtil_InitDirectSound( g_hwndMain ) ) )
return E_FAIL;
g_pShipEngineSound = DSUtil_CreateSound( TEXT("SENGINE"), 1 );
g_pBulletFiringSound = DSUtil_CreateSound( TEXT("BFIRE"), NUM_SHIP_TYPES );
g_pShipExplodeSound = DSUtil_CreateSound( TEXT("SBOOM"), NUM_SHIP_TYPES );
g_pShipStartSound = DSUtil_CreateSound( TEXT("SSTART"), NUM_SHIP_TYPES );
g_pShipStopSound = DSUtil_CreateSound( TEXT("SSTOP"), NUM_SHIP_TYPES );
g_pShipBounceSound = DSUtil_CreateSound( TEXT("SBOUNCE"), NUM_SHIP_TYPES );
g_pBlockExplodeSound = DSUtil_CreateSound( TEXT("LBOOM"), NUM_SHIP_TYPES );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CleanupGameSounds()
// Desc:
//-----------------------------------------------------------------------------
VOID CleanupGameSounds()
{
DSUtil_DestroySound( g_pBulletFiringSound );
DSUtil_DestroySound( g_pShipExplodeSound );
DSUtil_DestroySound( g_pShipEngineSound );
DSUtil_DestroySound( g_pShipStartSound );
DSUtil_DestroySound( g_pShipStopSound );
DSUtil_DestroySound( g_pShipBounceSound );
DSUtil_DestroySound( g_pBlockExplodeSound );
g_pBulletFiringSound = NULL;
g_pShipExplodeSound = NULL;
g_pShipEngineSound = NULL;
g_pShipStartSound = NULL;
g_pShipStopSound = NULL;
g_pShipBounceSound = NULL;
g_pBlockExplodeSound = NULL;
DSUtil_FreeDirectSound();
}
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