protected override string SolvePartOne()
{
intcode = new Intcode(Input, 2);
intcode.Run();
SetTiles();
return((tiles.Count(c => c.tile == (int)TileType.Block)).ToString());
}
protected override string SolvePartTwo()
{
Intcode intcode = new Intcode(Input);
intcode.SetInput(5);
intcode.Run();
return(intcode.output_register.ToString());
}
protected override string SolvePartOne()
{
Intcode intcode = new Intcode(Input, 2);
// We start at 0,0 and map it out
int x = 0;
int y = 0;
RepairDroid.Direction direction = RepairDroid.Direction.North;
// Add the first tile to kickstart us
tiles.Add(new RepairDroid.Tile()
{
x = 0, y = 0, type = RepairDroid.TileType.Hallway
});
while (tiles.Count < 270400)
{
RepairDroid.Tile tile = tiles.First(a => a.x == x && a.y == y);
// We know where we are, let's move
direction = GetNextDirection(tile, direction);
(int x, int y)pos = GetXY(tile, direction);
// Set our direction and run
intcode.SetInput((int)direction);
intcode.Run();
// Check our output
RepairDroid.TileType newTile = (RepairDroid.TileType)Convert.ToInt32(intcode.output_register);
// If this is a wall, don't change x,y
if (newTile != RepairDroid.TileType.Wall)
{
x = pos.x;
y = pos.y;
}
// Add the tile if not already known
if (tiles.Count(a => a.x == pos.x && a.y == pos.y) == 0)
{
tiles.Add(new RepairDroid.Tile()
{
x = pos.x, y = pos.y, type = newTile
});
}
}
return(tiles.Count.ToString());
}
protected override string SolvePartTwo()
{
long[] input = Input.ToLongArray(",");
input[1] = 57;
input[2] = 41;
//input = new long[] {1,0,0,0,99};
//input = new long[] {2,3,0,3,99};
//input = new long[] {2,4,4,5,99,0};
//input = new long[] {1,1,1,4,99,5,6,0,99};
Intcode intcode = new Intcode(input, 0);
intcode.Run();
return(intcode.memory[0].ToString());
}
public Day19() : base(19, 2019, "")
{
// Need to find Santa's ship (100x100 square inside the beam)
for (int y = 0; y < 50; y++)
{
for (int x = 0; x < 50; x++)
{
Intcode intcode = new Intcode(Input, 2);
intcode.SetInput(x);
intcode.SetInput(y);
intcode.Run();
// Gather the output
map.Add(new BeamTile()
{
x = x, y = y, state = Convert.ToInt32(intcode.output_register.Dequeue())
});
}
}
}
protected override string SolvePartTwo()
{
// Slopes didn't work, do this the "hard" way
// Based on https://github.com/fdouw/AoC2019/blob/master/Day19/Day19.cs
int prevStart = 0; // Improve performance by ignoring the void below the beam
int L = 99; // 100x100 block means x and x+99 inclusive
Intcode intcode = null;
for (int y = L; y < 10_000; y++)
{
for (int x = prevStart; x < 10_000; x++)
{
intcode = new Intcode(Input, 2);
intcode.SetInput(x);
intcode.SetInput(y);
intcode.Run();
if (intcode.output_register.Dequeue() == 1)
{
// prevStart = (x < y) ? x : y;
prevStart = x;
intcode = new Intcode(Input, 2);
intcode.SetInput(x + L);
intcode.SetInput(y - L);
intcode.Run();
if (intcode.output_register.Dequeue() == 1)
{
return((x * 10_000 + y - L).ToString());
}
break;
}
}
}
return(null);
}
protected override string SolvePartOne()
{
Intcode intcode = new Intcode(Input, 2);
//intcode.Run();
// Traverse the hull
// If a tile exists, return the color appropriately
// If not, it hasn't been painted and it is black
int x = 0;
int y = 0;
int dir = 0; // 0 == up, 1 == right, 2 == down, 3 == left
while (intcode.State == State.Waiting)
{
// Each run is:
// Send tile color input
// Run
// Retrieve new? color
// Run
// Retrieve direction
// Change direction and update x/y
IEnumerable <HullTile> search = tiles.Where(t => t.x == x && t.y == y);
HullTile t;
if (search.Count() == 0)
{
t = new HullTile()
{
x = x, y = y, color = 0
};
}
else
{
t = search.First();
// Remove the tile so we can update it
tiles.Remove(t);
}
// Send the color value
intcode.SetInput(t.color);
intcode.Run();
// Get new color value
t.color = Convert.ToInt32(intcode.output_register);
// Add to the list
this.tiles.Add(t);
// Continue to get the direction
intcode.Run();
// Change direction
if (intcode.output_register.Dequeue() == 0)
{
dir -= 1;
}
else
{
dir += 1;
}
// Correct the value
if (dir < 0)
{
dir += 4;
}
dir %= 4;
switch (dir)
{
case 0:
y -= 1;
break;
case 1:
x += 1;
break;
case 2:
y += 1;
break;
case 3:
x -= 1;
break;
}
// Move on!
}
return(this.tiles.Count.ToString());
}
protected override string SolvePartTwo()
{
// Starts on a single white panel
this.tiles = new List <HullTile>();
Intcode intcode = new Intcode(Input, 2);
//intcode.Run();
// Traverse the hull
// If a tile exists, return the color appropriately
// If not, it hasn't been painted and it is black
int x = 0;
int y = 0;
int dir = 0; // 0 == up, 1 == right, 2 == down, 3 == left
bool first = true;
while (intcode.State == State.Waiting)
{
// Each run is:
// Send tile color input
// Run
// Retrieve new? color
// Run
// Retrieve direction
// Change direction and update x/y
IEnumerable <HullTile> search = tiles.Where(t => t.x == x && t.y == y);
HullTile t;
if (search.Count() == 0)
{
t = new HullTile()
{
x = x, y = y, color = 0
};
}
else
{
t = search.First();
// Remove the tile so we can update it
tiles.Remove(t);
}
if (first)
{
t.color = 1;
first = false;
}
// Send the color value
intcode.SetInput(t.color);
intcode.Run();
// Get new color value
t.color = Convert.ToInt32(intcode.output_register);
// Add to the list
this.tiles.Add(t);
// Continue to get the direction
intcode.Run();
// Change direction
if (intcode.output_register.Dequeue() == 0)
{
dir -= 1;
}
else
{
dir += 1;
}
// Correct the value
if (dir < 0)
{
dir += 4;
}
dir %= 4;
switch (dir)
{
case 0:
y -= 1;
break;
case 1:
x += 1;
break;
case 2:
y += 1;
break;
case 3:
x -= 1;
break;
}
// Move on!
}
string output = "\n";
int sy = tiles.Min(a => a.y);
int ey = tiles.Max(a => a.y);
int sx = tiles.Min(a => a.x);
int ex = tiles.Max(a => a.x);
for (y = sy; y <= ey; y++)
{
for (x = sx; x <= ex; x++)
{
HullTile tile = tiles.FirstOrDefault(a => a.x == x && a.y == y);
if (tile == null || tile.color == 0)
{
output += " ";
}
else
{
output += "#";
}
}
output += "\n";
}
return(output);
}
protected override string SolvePartTwo()
{
intcode = new Intcode(Input, 2);
intcode.memory[0] = 2;
intcode.Run();
int score = 0;
bool stopNextScore = false;
while (intcode.State != State.Stopped)
{
GameTile tile = new GameTile();
tile.x = Convert.ToInt32(intcode.output_register);
intcode.Run();
tile.y = Convert.ToInt32(intcode.output_register);
intcode.Run();
tile.tile = Convert.ToInt32(intcode.output_register);
// Should we draw to make it faster?
bool draw = false;
// Score happens at the end of a screen draw
if (tile.x == -1)
{
score = tile.tile;
// Draw the screen
if (draw)
{
Console.WriteLine($"Score: {score}");
}
int maxX = tiles.Max(x => x.x);
int maxY = tiles.Max(y => y.y);
int y = 0;
while (y <= maxY)
{
for (int x = 0; x <= maxX; x++)
{
GameTile t = tiles.Where(t => t.x == x && t.y == y).First();
if (draw)
{
Console.Write(this.output[t.tile]);
}
}
if (draw)
{
Console.WriteLine();
}
y++;
}
if (draw)
{
Console.WriteLine();
}
if (stopNextScore)
{
break;
}
}
else
{
if (tiles.Count(t => t.x == tile.x && t.y == tile.y) > 0)
{
GameTile t = tiles.Where(t => t.x == tile.x && t.y == tile.y).First();
tiles.Remove(t);
}
tiles.Add(tile);
}
stopNextScore = (tiles.Count > 0 && tiles.Count(c => c.tile == (int)TileType.Block) == 0);
// Check where the ball is
GameTile ball = tiles.Where(t => t.tile == (int)TileType.Ball).FirstOrDefault();
GameTile paddle = tiles.Where(t => t.tile == (int)TileType.Paddle).FirstOrDefault();
intcode.ClearInput();
if (ball != null && paddle != null)
{
if (ball.x < paddle.x)
{
intcode.SetInput(-1);
}
else if (ball.x > paddle.x)
{
intcode.SetInput(1);
}
else
{
intcode.SetInput(0);
}
}
intcode.Run();
}
return(score.ToString());
}
protected override string SolvePartOne()
{
List <List <int> > phases = new List <List <int> >();
List <int> maxPhase = new List <int>();
long maxThrust = 0;
// All possible phases
for (int a = 0; a <= 4; a++)
{
for (int b = 0; b <= 4; b++)
{
for (int c = 0; c <= 4; c++)
{
for (int d = 0; d <= 4; d++)
{
for (int e = 0; e <= 4; e++)
{
var l = new List <int>()
{
a, b, c, d, e
};
if (l.Distinct().Count() == 5)
{
// Remove anything where the phase setting is used more than once
phases.Add(l);
}
}
}
}
}
}
foreach (var p in phases)
{
long out1, out2, out3, out4, out5;
Intcode intcode1 = new Intcode(Input, 2);
Intcode intcode2 = new Intcode(Input, 2);
Intcode intcode3 = new Intcode(Input, 2);
Intcode intcode4 = new Intcode(Input, 2);
Intcode intcode5 = new Intcode(Input, 2);
intcode1.SetInput(p[0]);
intcode1.Run();
// Set to initial 0
intcode1.SetInput(0);
intcode1.Run();
out1 = intcode1.output_register.Dequeue();
intcode2.SetInput(p[1]);
intcode2.Run();
// Set to Amp 1 output
intcode2.SetInput(out1);
intcode2.Run();
out2 = intcode2.output_register.Dequeue();
intcode3.SetInput(p[2]);
intcode3.Run();
// Set to Amp 2 output
intcode3.SetInput(out2);
intcode3.Run();
out3 = intcode3.output_register.Dequeue();
intcode4.SetInput(p[3]);
intcode4.Run();
// Set to Amp 3 output
intcode4.SetInput(out3);
intcode4.Run();
out4 = intcode4.output_register.Dequeue();
intcode5.SetInput(p[4]);
intcode5.Run();
// Set to Amp 4 output
intcode5.SetInput(out4);
intcode5.Run();
out5 = intcode5.output_register.Dequeue();
if (out5 > maxThrust)
{
maxThrust = out5;
maxPhase = p;
}
}
return(maxThrust.ToString());
}