public static void RLEWExpand(memptr source, memptr dest)
{
int length = source.GetInt32(0);
memptr end = new memptr(dest, length);
source.Offset(4); // skip length words
//
// expand it
//
do
{
ushort value = source.GetUInt16(0);
source.Offset(2);
if(value != RLETAG)
{
//
// uncompressed
//
dest.SetUInt16(0, value);
dest.Offset(2);
}
else
{
//
// compressed string
//
ushort count = source.GetUInt16(0);
source.Offset(2);
value = source.GetUInt16(0);
source.Offset(2);
if(dest.BaseIndex + count * 2 > end.BaseIndex)
throw new Exception("RLEWExpand error!");
for(ushort i = 1; i <= count; i++)
{
dest.SetUInt16(0, value);
dest.Offset(2);
}
}
} while(dest.BaseIndex < end.BaseIndex);
}
/// <summary>Returns a byte array containing 16-bit signed samples for the specified speaker sound.</summary>
/// <param name="speakerSound">The speaker sound.</param>
/// <param name="soundsPointer">The speaker sounds pointer.</param>
/// <param name="sampleFrequency">The sample frequency in Hz.</param>
/// <param name="amplitude">The peak amplitude (0 to 1).</param>
/// <returns>A byte array.</returns>
public static byte[] GetSpeakerSamplesS16(spksndtype speakerSound, memptr soundsPointer, double sampleFrequency, double amplitude)
{
soundsPointer.Offset(speakerSound.start);
PCSpeaker pcSpeaker = new PCSpeaker(sampleFrequency, amplitude);
// as: Added checks to catch problems with SOUNDS.HOV files (Demon Hunter v1.1):
// Also, the maximum sample time has been limited to 10s
// and: sound generation stops if the end of the soundsPointer buffer is reached
double time = 1.0 / spksndtype.Frequency(0x2147);
ushort timerValue = soundsPointer.GetUInt16(0);
double maxTime = 10.0;
while(timerValue != spksndtype.SpeakerData_EndSound)
{
pcSpeaker.SetTimer((ushort) timerValue);
pcSpeaker.WriteSamples(time);
soundsPointer.Offset(2);
if(soundsPointer.BaseIndex + 1 >= soundsPointer.Buffer.Length)
break;
timerValue = soundsPointer.GetUInt16(0);
if(pcSpeaker.ElapsedTime > maxTime)
break;
}
return pcSpeaker.ToArray();
}
//==========================================================================
/*
======================
=
= LoadLevel
=
= Loads LEVEL00.EXT (00 = global variable level)
=
======================
*/
private void LoadLevel()
{
//
// load the new level in and decompress
//
string filename, num;
if(level < 10)
{
num = level.ToString();
filename = "LEVEL0";
}
else
{
num = level.ToString();
filename = "LEVEL";
}
filename = string.Concat(filename, num);
filename = string.Concat(filename, "." + EXTENSION);
memptr bufferseg = new memptr();
BloadinMM(filename, ref bufferseg);
ushort length = bufferseg.GetUInt16(0);
if(levelseg.Buffer != null)
MMFreePtr(ref levelseg);
MMGetPtr(ref levelseg, length);
// as: Made RLEWExpand static
try { RLEWExpand(bufferseg, levelseg); }
catch(Exception ex)
{ // as: Quit on failure
Quit(ex.Message);
}
MMFreePtr(ref bufferseg);
levelheader = new LevelDef(levelseg);
//
// copy plane 0 to tilemap
//
memptr planeptr = new memptr(levelseg, 32);
int index = 0;
for(short y = 0; y < levelheader.height; y++)
for(short x = 0; x < levelheader.width; x++, index += 2)
tilemap[x, y] = planeptr.GetUInt16(index);
//
// spawn tanks
//
planeptr = new memptr(levelseg, 32 + levelheader.planesize);
StartLevel(planeptr);
MMFreePtr(ref levelseg);
}
//==========================================================================
/*
==================
=
= StartLevel
=
==================
*/
private void StartLevel(memptr plane1)
{
numrefugees = 0;
// as: Enemy stats
enemiesKilled = 0;
totalEnemies = 0;
for(ushort y = 0; y < levelheader.height; y++)
{
for(ushort x = 0; x < levelheader.width; x++)
{
ushort tile = plane1.GetUInt16(0);
plane1.Offset(2);
if(tile > 0)
{
ushort dir = (ushort) (tile >> 8); // high byte gives starting dir
tile &= 0xff;
fixed_t gx = x * TILEGLOBAL + TILEGLOBAL / 2;
fixed_t gy = y * TILEGLOBAL + TILEGLOBAL / 2;
// as: Added LevelObjects
switch(tile)
{
case LevelObjects.MaleRefugee:
SpawnRefugee(gx, gy, true);
break;
case LevelObjects.Drone:
SpawnDrone(gx + TILEGLOBAL / 2, gy + TILEGLOBAL / 2);
break;
case LevelObjects.Tank:
SpawnTank(gx + TILEGLOBAL / 2, gy + TILEGLOBAL / 2);
break;
case LevelObjects.Mutant:
SpawnMutant(gx + TILEGLOBAL / 2, gy + TILEGLOBAL / 2);
break;
case LevelObjects.Shield:
SpawnShield(gx, gy);
break;
case LevelObjects.FemaleRefugee:
SpawnRefugee(gx, gy, false);
break;
case LevelObjects.WarpGate:
warpx = gx; // warp gate is spawned when all men are done
warpy = gy;
break;
case LevelObjects.Player:
SpawnPlayer(gx, gy);
short angle = (short) (ANGLES / 4 - dir * ANGLES / 4);
if(angle < 0)
angle += ANGLES;
objlist[0].angle = angle;
break;
}
}
}
}
totalrefugees = numrefugees;
}
