public override Sprite GetSprite(ObjectEntry obj)
{
var count = obj.SubType & 0x7F;
if (count > 16)
{
var unknown = ObjectHelper.UnknownObject;
unknown.Flip(obj.XFlip, obj.YFlip);
return(unknown);
}
var truncated = count & 0x1E;
var horz = truncated;
var vert = truncated;
if (count < 8)
{
horz = 8;
vert = count < 1 ? 1 : count;
}
var offset = (obj.SubType & 0x80) == 0 ? 0 : slope;
var bitmap = new BitmapBits(16 * horz, 16 + offset * vert);
var index = 0;
while (index < count)
{
bitmap.DrawSprite(sprite, 16 * index, offset * index++);
}
while (index < 8)
{
bitmap.DrawSprite(sprite, 16 * index++, 0);
}
return(new Sprite(bitmap, priority, -8 * (truncated + 1), -8));
}
public override Sprite GetDebugOverlay(ObjectEntry obj)
{
if (obj.SubType != 0 && obj.SubType < 0x80)
{
var sprite = unknownSprite[(obj.XFlip ? 1 : 0) | (obj.YFlip ? 2 : 0)];
var height = obj.SubType << 1;
if (height < 16)
{
return(sprite);
}
var bitmap = new BitmapBits(16, height);
bitmap.DrawRectangle(LevelData.ColorWhite, 0, 0, 15, height - 1);
bitmap.DrawSprite(sprite, 8, obj.SubType);
return(new Sprite(bitmap, -8, -obj.SubType));
}
return(null);
}
private Sprite BuildPath(params ushort[] pathData)
{
var sprites = new LinkedList <Tuple <int, int, int> >();
var routine = Routine.Setup;
int spawnTimer = 7, index = 0;
decimal xpos = pathData[index++], xvel = 0.0m;
decimal ypos = pathData[index++], yvel = 0.0m;
int xorigin = 0, yorigin = 0;
byte angle = 0;
while (true)
{
switch (routine)
{
case Routine.Done:
var first = sprites.First.Value;
int minX = first.Item1, maxX = first.Item1, minY = first.Item2, maxY = first.Item2;
foreach (var s in sprites)
{
if (s.Item1 < minX)
{
minX = s.Item1;
}
else if (s.Item1 > maxX)
{
maxX = s.Item1;
}
if (s.Item2 < minY)
{
minY = s.Item2;
}
else if (s.Item2 > maxY)
{
maxY = s.Item2;
}
}
var bitmap = new BitmapBits(maxX - minX + 49, maxY - minY + 49);
foreach (var s in sprites)
{
bitmap.DrawSprite(paths[s.Item3], s.Item1 - minX + 24, s.Item2 - minY + 24);
}
return(new Sprite(bitmap, minX - 24, minY - 24));
case Routine.Line:
if (--xorigin > 0)
{
xpos += xvel;
ypos += yvel;
break;
}
xpos = pathData[index++];
ypos = pathData[index++];
goto case Routine.CheckDone;
case Routine.CheckDone:
if (index == pathData.Length)
{
routine = Routine.Done;
break;
}
if ((short)pathData[index] >= 0)
{
goto case Routine.NextWaypoint;
}
routine = ((pathData[index] >> 8) & 0x7F) + Routine.CircleLarge;
spawnTimer = routine == Routine.CircleSmall ? 0 : 1;
angle = (byte)(pathData[index + 1] >> 8);
{
var radians = Math.PI * ((angle + 0x20) & 0xC0) / 128.0;
var scalefactor = routine == Routine.CircleSmall ? -64.0 : -128.0;
xorigin = (int)decimal.Floor(xpos) + (int)(Math.Sin(radians) * scalefactor);
if (routine == Routine.CircleLarge || routine == Routine.CircleSmall)
{
yorigin = (int)decimal.Floor(ypos) + (int)(Math.Cos(radians) * scalefactor);
}
}
break;
case Routine.CircleLarge:
case Routine.CircleSmall:
{
var radians = Math.PI * angle / 128.0;
var scalefactor = (5 - (int)routine) * 64.0;
var sin = (int)(Math.Sin(radians) * scalefactor) + xorigin;
var cos = (int)(Math.Cos(radians) * scalefactor) + yorigin;
xvel = (sin - (int)decimal.Floor(xpos)) * 256;
yvel = (cos - (int)decimal.Floor(ypos)) * 256;
xpos = sin;
ypos = cos;
}
goto case Routine.CheckAngle;
case Routine.SineDown:
yvel = 3.0m;
goto case Routine.Sine;
case Routine.SineUp:
yvel = -3.0m;
goto case Routine.Sine;
case Routine.Sine:
{
var radians = Math.PI * angle / 128.0;
var sin = (int)(Math.Sin(radians) * 128.0) + xorigin;
xvel = (sin - (int)decimal.Floor(xpos)) * 256;
xpos = sin;
ypos += yvel;
}
goto case Routine.CheckAngle;
case Routine.CheckAngle:
if (angle == (byte)pathData[index + 1])
{
routine = Routine.Line;
index += 2;
goto case Routine.CheckDone;
}
angle += (byte)pathData[index];
break;
case Routine.Setup:
routine = Routine.Line;
goto case Routine.NextWaypoint;
case Routine.NextWaypoint:
var xoffset = pathData[index] - xpos;
var yoffset = pathData[index + 1] - ypos;
var xfactor = xoffset < 0 ? -xoffset : xoffset;
var yfactor = yoffset < 0 ? -yoffset : yoffset;
if (xfactor < yfactor)
{
yvel = yoffset < 0 ? -12.0m : 12.0m;
yfactor = yoffset / yvel;
xvel = xoffset == 0 ? 0 : (xoffset / yfactor);
xorigin = (int)(yfactor < 0 ? -yfactor : yfactor) & 0xFF;
}
else
{
xvel = xoffset < 0 ? -12.0m : 12.0m;
xfactor = xoffset / xvel;
yvel = yoffset == 0 ? 0 : (yoffset / xfactor);
xorigin = (int)(xfactor < 0 ? -xfactor : xfactor) & 0xFF;
}
break;
}
if (spawnTimer-- > 0)
{
continue;
}
spawnTimer = 1;
var xoff = (int)decimal.Floor(xpos);
var yoff = (int)decimal.Floor(ypos);
var frame = routine == Routine.SineDown || routine == Routine.SineUp
? (((angle - (byte)pathData[index] + 8) >> 4) & 7) + 8 : xvel == 0.0m ? 4
: ((int)(Math.Atan((double)(yvel / xvel)) * 128.0 / Math.PI + 8) >> 4) & 7;
sprites.AddFirst(new Tuple <int, int, int>(xoff, yoff, frame));
}
}
public override Sprite GetDebugOverlay(ObjectEntry obj)
{
var jumps = obj.SubType & 0x0F;
if (jumps == 0 || (obj.SubType & 0x30) != 0)
{
return(null);
}
var bitmap = new BitmapBits(64, 65);
bitmap.DrawCircle(LevelData.ColorWhite, 65, 1, 63);
bitmap.DrawLine(LevelData.ColorWhite, 63, 0x00, 63, 0x07);
bitmap.DrawLine(LevelData.ColorWhite, 63, 0x10, 63, 0x17);
bitmap.DrawLine(LevelData.ColorWhite, 63, 0x20, 63, 0x27);
bitmap.DrawLine(LevelData.ColorWhite, 63, 0x30, 63, 0x37);
var y = 142;
var swings = obj.SubType >> 6;
var width = swings == 0 ? 128 : swings * 512;
var height = (swings == 0 ? 1 : swings) * jumps * 128 + y;
var overlay = new Sprite(bitmap, -64, height - 64);
bitmap = new BitmapBits(width, height + 1);
bitmap.DrawLine(LevelData.ColorWhite, 12, 0, 12, y);
if (swings == 0)
{
while (y != height)
{
bitmap.DrawEllipse(LevelData.ColorWhite, -128, y, 127, y += 128);
}
}
else
{
var path = new BitmapBits(272, 65);
path.DrawEllipse(LevelData.ColorWhite, -272, 0, 271, 96);
var right = new Sprite(path);
right = new Sprite(new Sprite(right, 512, 129, true, true), right);
var left = new Sprite(right, true, false);
var curLeft = false;
for (var x = 0; y != height; y += 128)
{
bitmap.DrawSprite(curLeft ? left : right, x, y);
curLeft = curLeft ? (x -= 512) != 0 : (x += 512) == width;
}
if (curLeft)
{
overlay.Flip(true, false);
overlay.Offset(width, 0);
}
}
overlay = new Sprite(new Sprite(bitmap), overlay);
overlay.Offset(-12, 50);
overlay.Flip(!obj.XFlip, false);
return(overlay);
}