public static Vertex FromData(byte[] data, int offset)
{
var x = BitConverter.ToInt16(data, offset);
var y = BitConverter.ToInt16(data, offset + 2);
return(new Vertex(Fixed.FromInt(x), Fixed.FromInt(y)));
}
/// <summary>
/// Spawn blood.
/// </summary>
public void SpawnBlood(Fixed x, Fixed y, Fixed z, int damage)
{
var random = this.world.Random;
z += new Fixed((random.Next() - random.Next()) << 10);
var thing = this.world.ThingAllocation.SpawnMobj(x, y, z, MobjType.Blood);
thing.MomZ = Fixed.FromInt(2);
thing.Tics -= random.Next() & 3;
if (thing.Tics < 1)
{
thing.Tics = 1;
}
if (damage <= 12 && damage >= 9)
{
thing.SetState(MobjState.Blood2);
}
else if (damage < 9)
{
thing.SetState(MobjState.Blood3);
}
}
private void UnArchiveLine(LineDef line)
{
line.Flags = (LineFlags)this.reader.ReadInt16();
line.Special = (LineSpecial)this.reader.ReadInt16();
line.Tag = this.reader.ReadInt16();
if (line.FrontSide != null)
{
var side = line.FrontSide;
side.TextureOffset = Fixed.FromInt(this.reader.ReadInt16());
side.RowOffset = Fixed.FromInt(this.reader.ReadInt16());
side.TopTexture = this.reader.ReadInt16();
side.BottomTexture = this.reader.ReadInt16();
side.MiddleTexture = this.reader.ReadInt16();
}
if (line.BackSide != null)
{
var side = line.BackSide;
side.TextureOffset = Fixed.FromInt(this.reader.ReadInt16());
side.RowOffset = Fixed.FromInt(this.reader.ReadInt16());
side.TopTexture = this.reader.ReadInt16();
side.BottomTexture = this.reader.ReadInt16();
side.MiddleTexture = this.reader.ReadInt16();
}
}
public void BFGSpray(Mobj bfgBall)
{
var hs = this.world.Hitscan;
var random = this.world.Random;
// Offset angles from its attack angle.
for (var i = 0; i < 40; i++)
{
var an = bfgBall.Angle - Angle.Ang90 / 2 + Angle.Ang90 / 40 * (uint)i;
// bfgBall.Target is the originator (player) of the missile.
hs.AimLineAttack(bfgBall.Target, an, Fixed.FromInt(16 * 64));
if (hs.LineTarget == null)
{
continue;
}
this.world.ThingAllocation.SpawnMobj(hs.LineTarget.X, hs.LineTarget.Y, hs.LineTarget.Z + (hs.LineTarget.Height >> 2), MobjType.Extrabfg);
var damage = 0;
for (var j = 0; j < 15; j++)
{
damage += (random.Next() & 7) + 1;
}
this.world.ThingInteraction.DamageMobj(hs.LineTarget, bfgBall.Target, bfgBall.Target, damage);
}
}
private bool SlideTraverse(Intercept intercept)
{
var mc = this.world.MapCollision;
if (intercept.Line == null)
{
throw new Exception("ThingMovement.SlideTraverse: Not a line?");
}
var line = intercept.Line;
if ((line.Flags & LineFlags.TwoSided) == 0)
{
if (Geometry.PointOnLineSide(this.slideThing.X, this.slideThing.Y, line) != 0)
{
// Don't hit the back side.
return(true);
}
goto isBlocking;
}
// Set openrange, opentop, openbottom.
mc.LineOpening(line);
if (mc.OpenRange < this.slideThing.Height)
{
// Doesn't fit.
goto isBlocking;
}
if (mc.OpenTop - this.slideThing.Z < this.slideThing.Height)
{
// Mobj is too high.
goto isBlocking;
}
if (mc.OpenBottom - this.slideThing.Z > Fixed.FromInt(24))
{
// Too big a step up.
goto isBlocking;
}
// This line doesn't block movement.
return(true);
// The line does block movement, see if it is closer than best so far.
isBlocking:
if (intercept.Frac < this.bestSlideFrac)
{
this.secondSlideFrac = this.bestSlideFrac;
this.secondSlideLine = this.bestSlideLine;
this.bestSlideFrac = intercept.Frac;
this.bestSlideLine = line;
}
// Stop.
return(false);
}
/// <summary>
/// Find a target on the aiming line.
/// Sets LineTaget when a target is aimed at.
/// </summary>
public Fixed AimLineAttack(Mobj shooter, Angle angle, Fixed range)
{
this.currentShooter = shooter;
this.currentShooterZ = shooter.Z + (shooter.Height >> 1) + Fixed.FromInt(8);
this.currentRange = range;
var targetX = shooter.X + range.ToIntFloor() * Trig.Cos(angle);
var targetY = shooter.Y + range.ToIntFloor() * Trig.Sin(angle);
// Can't shoot outside view angles.
this.topSlope = Fixed.FromInt(100) / 160;
this.bottomSlope = Fixed.FromInt(-100) / 160;
this.lineTarget = null;
this.world.PathTraversal.PathTraverse(
shooter.X,
shooter.Y,
targetX,
targetY,
PathTraverseFlags.AddLines | PathTraverseFlags.AddThings,
this.aimTraverseFunc
);
if (this.lineTarget != null)
{
return(this.currentAimSlope);
}
return(Fixed.Zero);
}
public static Node FromData(byte[] data, int offset)
{
var x = BitConverter.ToInt16(data, offset);
var y = BitConverter.ToInt16(data, offset + 2);
var dx = BitConverter.ToInt16(data, offset + 4);
var dy = BitConverter.ToInt16(data, offset + 6);
var frontBoundingBoxTop = BitConverter.ToInt16(data, offset + 8);
var frontBoundingBoxBottom = BitConverter.ToInt16(data, offset + 10);
var frontBoundingBoxLeft = BitConverter.ToInt16(data, offset + 12);
var frontBoundingBoxRight = BitConverter.ToInt16(data, offset + 14);
var backBoundingBoxTop = BitConverter.ToInt16(data, offset + 16);
var backBoundingBoxBottom = BitConverter.ToInt16(data, offset + 18);
var backBoundingBoxLeft = BitConverter.ToInt16(data, offset + 20);
var backBoundingBoxRight = BitConverter.ToInt16(data, offset + 22);
var frontChild = BitConverter.ToInt16(data, offset + 24);
var backChild = BitConverter.ToInt16(data, offset + 26);
return(new Node(
Fixed.FromInt(x),
Fixed.FromInt(y),
Fixed.FromInt(dx),
Fixed.FromInt(dy),
Fixed.FromInt(frontBoundingBoxTop),
Fixed.FromInt(frontBoundingBoxBottom),
Fixed.FromInt(frontBoundingBoxLeft),
Fixed.FromInt(frontBoundingBoxRight),
Fixed.FromInt(backBoundingBoxTop),
Fixed.FromInt(backBoundingBoxBottom),
Fixed.FromInt(backBoundingBoxLeft),
Fixed.FromInt(backBoundingBoxRight),
frontChild,
backChild
));
}
public static MapThing FromData(byte[] data, int offset)
{
var x = BitConverter.ToInt16(data, offset);
var y = BitConverter.ToInt16(data, offset + 2);
var angle = BitConverter.ToInt16(data, offset + 4);
var type = BitConverter.ToInt16(data, offset + 6);
var flags = BitConverter.ToInt16(data, offset + 8);
return(new MapThing(Fixed.FromInt(x), Fixed.FromInt(y), new Angle(Angle.Ang45.Data * (uint)(angle / 45)), type, (ThingFlags)flags));
}
public void TestSqrt()
{
var a = Fixed.FromInt(9);
var r = Fixed.FromInt(3);
AssertApproximately(r, FMath.Sqrt(a));
a = Fixed.Parse("1546.564654");
r = Fixed.Parse("39.326386");
AssertApproximately(r, FMath.Sqrt(a));
}
/// <summary>
/// Fall on your face when dying.
/// Decrease POV height to floor height.
/// </summary>
private void DeathThink(Player player)
{
this.MovePlayerSprites(player);
// Fall to the ground.
if (player.ViewHeight > Fixed.FromInt(6))
{
player.ViewHeight -= Fixed.One;
}
if (player.ViewHeight < Fixed.FromInt(6))
{
player.ViewHeight = Fixed.FromInt(6);
}
player.DeltaViewHeight = Fixed.Zero;
this.onGround = (player.Mobj.Z <= player.Mobj.FloorZ);
this.CalcHeight(player);
if (player.Attacker != null && player.Attacker != player.Mobj)
{
var angle = Geometry.PointToAngle(player.Mobj.X, player.Mobj.Y, player.Attacker.X, player.Attacker.Y);
var delta = angle - player.Mobj.Angle;
if (delta < PlayerBehavior.ang5 || delta.Data > (-PlayerBehavior.ang5).Data)
{
// Looking at killer, so fade damage flash down.
player.Mobj.Angle = angle;
if (player.DamageCount > 0)
{
player.DamageCount--;
}
}
else if (delta < Angle.Ang180)
{
player.Mobj.Angle += PlayerBehavior.ang5;
}
else
{
player.Mobj.Angle -= PlayerBehavior.ang5;
}
}
else if (player.DamageCount > 0)
{
player.DamageCount--;
}
if ((player.Cmd.Buttons & TicCmdButtons.Use) != 0)
{
player.PlayerState = PlayerState.Reborn;
}
}
private void UnArchiveSector(Sector sector)
{
sector.FloorHeight = Fixed.FromInt(this.reader.ReadInt16());
sector.CeilingHeight = Fixed.FromInt(this.reader.ReadInt16());
sector.FloorFlat = this.reader.ReadInt16();
sector.CeilingFlat = this.reader.ReadInt16();
sector.LightLevel = this.reader.ReadInt16();
sector.Special = (SectorSpecial)this.reader.ReadInt16();
sector.Tag = this.reader.ReadInt16();
sector.SpecialData = null;
sector.SoundTarget = null;
}
/// <summary>
/// Looks for lines in the given block that intercept the given trace
/// to add to the intercepts list.
/// A line is crossed if its endpoints are on opposite sidesof the trace.
/// Returns true if earlyOut and a solid line hit.
/// </summary>
private bool AddLineIntercepts(LineDef line)
{
int s1;
int s2;
// Avoid precision problems with two routines.
if (this.trace.Dx > Fixed.FromInt(16) ||
this.trace.Dy > Fixed.FromInt(16) ||
this.trace.Dx < -Fixed.FromInt(16) ||
this.trace.Dy < -Fixed.FromInt(16))
{
s1 = Geometry.PointOnDivLineSide(line.Vertex1.X, line.Vertex1.Y, this.trace);
s2 = Geometry.PointOnDivLineSide(line.Vertex2.X, line.Vertex2.Y, this.trace);
}
else
{
s1 = Geometry.PointOnLineSide(this.trace.X, this.trace.Y, line);
s2 = Geometry.PointOnLineSide(this.trace.X + this.trace.Dx, this.trace.Y + this.trace.Dy, line);
}
if (s1 == s2)
{
// Line isn't crossed.
return(true);
}
// Hit the line.
this.target.MakeFrom(line);
var frac = this.InterceptVector(this.trace, this.target);
if (frac < Fixed.Zero)
{
// Behind source.
return(true);
}
// Try to early out the check.
if (this.earlyOut && frac < Fixed.One && line.BackSector == null)
{
// Stop checking.
return(false);
}
this.intercepts[this.interceptCount].Make(frac, line);
this.interceptCount++;
// Continue.
return(true);
}
public void TestAtan()
{
var a = Fixed.FromInt(14);
var r = Fixed.FromFloat(1.4994888f);
AssertApproximately(r, FMath.Atan(a));
a = Fixed.FromFloat(-0.154787f);
r = Fixed.FromFloat(-0.153568f);
AssertApproximately(r, FMath.Atan(a));
a = Fixed.FromFloat(0.7547870f);
r = Fixed.FromFloat(0.6465577f);
AssertApproximately(r, FMath.Atan(a));
}
public void TestTan()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(45) * deg2Rad;
var r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Tan(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Tan(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.75355405");
AssertApproximately(r, FMath.Tan(a));
}
public void TestSin()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(90) * deg2Rad;
var r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Sin(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Sin(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.60181502");
AssertApproximately(r, FMath.Sin(a));
}
public void TestCos()
{
var deg2Rad = Fixed.FromFloat((float)(Math.PI / 180));
var a = Fixed.FromInt(90) * deg2Rad;
var r = Fixed.FromInt(0);
AssertApproximately(r, FMath.Cos(a));
a = Fixed.FromInt(0) * deg2Rad;
r = Fixed.FromInt(1);
AssertApproximately(r, FMath.Cos(a));
a = Fixed.FromInt(37) * deg2Rad;
r = Fixed.Parse("0.79863551");
AssertApproximately(r, FMath.Cos(a));
}
public void Division1()
{
var random = new Random(666);
for (var i = 0; i < 100; i++)
{
var a = random.Next(66) - 33;
var b = (2 * random.Next(2) - 1) * (random.Next(33) + 33);
var c = (double)a / b;
var fa = Fixed.FromInt(a);
var fb = Fixed.FromInt(b);
var fc = fa / fb;
Assert.AreEqual(c, fc.ToDouble(), delta);
}
}
public void Addition1()
{
var random = new Random(666);
for (var i = 0; i < 100; i++)
{
var a = random.Next(666) - 333;
var b = random.Next(666) - 333;
var c = a + b;
var fa = Fixed.FromInt(a);
var fb = Fixed.FromInt(b);
var fc = fa + fb;
Assert.AreEqual(c, fc.ToDouble(), delta);
}
}
/// <summary>
/// Shoot a missile from the source.
/// For players.
/// </summary>
public void SpawnPlayerMissile(Mobj source, MobjType type)
{
var hs = this.world.Hitscan;
// See which target is to be aimed at.
var angle = source.Angle;
var slope = hs.AimLineAttack(source, angle, Fixed.FromInt(16 * 64));
if (hs.LineTarget == null)
{
angle += new Angle(1 << 26);
slope = hs.AimLineAttack(source, angle, Fixed.FromInt(16 * 64));
if (hs.LineTarget == null)
{
angle -= new Angle(2 << 26);
slope = hs.AimLineAttack(source, angle, Fixed.FromInt(16 * 64));
}
if (hs.LineTarget == null)
{
angle = source.Angle;
slope = Fixed.Zero;
}
}
var x = source.X;
var y = source.Y;
var z = source.Z + Fixed.FromInt(32);
var missile = this.SpawnMobj(x, y, z, type);
if (missile.Info.SeeSound != 0)
{
this.world.StartSound(missile, missile.Info.SeeSound, SfxType.Misc);
}
missile.Target = source;
missile.Angle = angle;
missile.MomX = new Fixed(missile.Info.Speed) * Trig.Cos(angle);
missile.MomY = new Fixed(missile.Info.Speed) * Trig.Sin(angle);
missile.MomZ = new Fixed(missile.Info.Speed) * slope;
this.CheckMissileSpawn(missile);
}
public void TestFactory()
{
var a = Fixed.FromInt(10);
Assert.AreEqual(Fixed.FromInt(10), a);
var b = Fixed.FromFloat(3.2f);
Assert.AreEqual(Fixed.FromFloat(3.2f), b);
var c = Fixed.Parse("6.3");
AssertApproximately(Fixed.FromFraction(63, 10), c);
var d = Fixed.FromFraction(3141592, 1000000);
AssertApproximately(Fixed.FromFloat(3.141592f), d);
}
public void TestParseInt()
{
var n = Fixed.Parse("0");
Assert.AreEqual(Fixed.Zero, n);
n = Fixed.Parse("1");
Assert.AreEqual(Fixed.One, n);
n = Fixed.Parse("-1");
Assert.AreEqual(Fixed.FromInt(-1), n);
n = Fixed.Parse("16777216");
Assert.AreEqual(Fixed.FromInt(16777216), n);
n = Fixed.Parse("-16777216");
Assert.AreEqual(Fixed.FromInt(-16777216), n);
}
public static SideDef FromData(byte[] data, int offset, TextureLookup textures, Sector[] sectors)
{
var textureOffset = BitConverter.ToInt16(data, offset);
var rowOffset = BitConverter.ToInt16(data, offset + 2);
var topTextureName = DoomInterop.ToString(data, offset + 4, 8);
var bottomTextureName = DoomInterop.ToString(data, offset + 12, 8);
var middleTextureName = DoomInterop.ToString(data, offset + 20, 8);
var sectorNum = BitConverter.ToInt16(data, offset + 28);
return(new SideDef(
Fixed.FromInt(textureOffset),
Fixed.FromInt(rowOffset),
textures.GetNumber(topTextureName),
textures.GetNumber(bottomTextureName),
textures.GetNumber(middleTextureName),
sectorNum != -1 ? sectors[sectorNum] : null
));
}
/// <summary>
/// Shoot a missile from the source to the destination.
/// For monsters.
/// </summary>
public Mobj SpawnMissile(Mobj source, Mobj dest, MobjType type)
{
var missile = this.SpawnMobj(source.X, source.Y, source.Z + Fixed.FromInt(32), type);
if (missile.Info.SeeSound != 0)
{
this.world.StartSound(missile, missile.Info.SeeSound, SfxType.Misc);
}
// Where it came from?
missile.Target = source;
var angle = Geometry.PointToAngle(source.X, source.Y, dest.X, dest.Y);
// Fuzzy player.
if ((dest.Flags & MobjFlags.Shadow) != 0)
{
var random = this.world.Random;
angle += new Angle((random.Next() - random.Next()) << 20);
}
var speed = this.GetMissileSpeed(missile.Type);
missile.Angle = angle;
missile.MomX = new Fixed(speed) * Trig.Cos(angle);
missile.MomY = new Fixed(speed) * Trig.Sin(angle);
var dist = Geometry.AproxDistance(dest.X - source.X, dest.Y - source.Y);
var num = (dest.Z - source.Z).Data;
var den = (dist / speed).Data;
if (den < 1)
{
den = 1;
}
missile.MomZ = new Fixed(num / den);
this.CheckMissileSpawn(missile);
return(missile);
}
private void Run_Add_Int_Int(Random r)
{
var a = r.Next(-10000, 10000);
var b = r.Next(-10000, 10000);
var result = a + b;
LoopBase(() => result = a + b);
var fa = Fixed.FromInt(a);
var fb = Fixed.FromInt(b);
var fresult = fa + fb;
LoopFixed(() => fresult = fa + fb);
if (result != fresult)
{
throw new InvalidOperationException();
}
}
private void Run_Add_Int_Float(Random r)
{
var a = r.Next(-10000, 10000);
var b = (float)(r.NextDouble() * r.Next(-10000, 10000));
var result = a + b;
LoopBase(() => result = a + b);
var fa = Fixed.FromInt(a);
var fb = Fixed.FromFloat(b);
var fresult = fa + fb;
LoopFixed(() => fresult = fa + fb);
if (!Fixed.Approximately(fresult, Fixed.FromFloat(result)))
{
throw new InvalidOperationException();
}
}
/// <summary>
/// Change the player's weapon sprite.
/// </summary>
public void SetPlayerSprite(Player player, PlayerSprite position, MobjState state)
{
var psp = player.PlayerSprites[(int)position];
do
{
if (state == MobjState.Null)
{
// Object removed itself.
psp.State = null;
break;
}
var stateDef = DoomInfo.States[(int)state];
psp.State = stateDef;
psp.Tics = stateDef.Tics; // Could be 0.
if (stateDef.Misc1 != 0)
{
// Coordinate set.
psp.Sx = Fixed.FromInt(stateDef.Misc1);
psp.Sy = Fixed.FromInt(stateDef.Misc2);
}
// Call action routine.
// Modified handling.
if (stateDef.PlayerAction != null)
{
stateDef.PlayerAction(this.world, player, psp);
if (psp.State == null)
{
break;
}
}
state = psp.State.Next;
}while (psp.Tics == 0);
// An initial state of 0 could cycle through.
}
/// <summary>
/// Fire a hitscan bullet.
/// If damage == 0, it is just a test trace that will leave linetarget set.
/// </summary>
public void LineAttack(Mobj shooter, Angle angle, Fixed range, Fixed slope, int damage)
{
this.currentShooter = shooter;
this.currentShooterZ = shooter.Z + (shooter.Height >> 1) + Fixed.FromInt(8);
this.currentRange = range;
this.currentAimSlope = slope;
this.currentDamage = damage;
var targetX = shooter.X + range.ToIntFloor() * Trig.Cos(angle);
var targetY = shooter.Y + range.ToIntFloor() * Trig.Sin(angle);
this.world.PathTraversal.PathTraverse(
shooter.X,
shooter.Y,
targetX,
targetY,
PathTraverseFlags.AddLines | PathTraverseFlags.AddThings,
this.shootTraverseFunc
);
}
public static BlockMap FromWad(string fileName, LineDef[] lines)
{
var reader = new BinaryReader(DoomApplication.Instance.FileSystem.Read(fileName));
var data = reader.ReadBytes((int)reader.BaseStream.Length);
var table = new short[data.Length / 2];
for (var i = 0; i < table.Length; i++)
{
var offset = 2 * i;
table[i] = BitConverter.ToInt16(data, offset);
}
var originX = Fixed.FromInt(table[0]);
var originY = Fixed.FromInt(table[1]);
var width = table[2];
var height = table[3];
return(new BlockMap(originX, originY, width, height, table, lines));
}
public void Comparison()
{
var random = new Random(666);
for (var i = 0; i < 100; i++)
{
var a = random.Next(5);
var b = random.Next(5);
var fa = Fixed.FromInt(a);
var fb = Fixed.FromInt(b);
Assert.AreEqual(a == b, fa == fb);
Assert.AreEqual(a != b, fa != fb);
Assert.AreEqual(a < b, fa < fb);
Assert.AreEqual(a > b, fa > fb);
Assert.AreEqual(a <= b, fa <= fb);
Assert.AreEqual(a >= b, fa >= fb);
}
}
public void MinMax()
{
var random = new Random(666);
for (var i = 0; i < 100; i++)
{
var a = random.Next(5);
var b = random.Next(5);
var min = Math.Min(a, b);
var max = Math.Max(a, b);
var fa = Fixed.FromInt(a);
var fb = Fixed.FromInt(b);
var fmin = Fixed.Min(fa, fb);
var fmax = Fixed.Max(fa, fb);
Assert.AreEqual(min, fmin.ToDouble(), 1.0E-9);
Assert.AreEqual(max, fmax.ToDouble(), 1.0E-9);
}
}
