public void Day17_Puzzle1_FindX_OK()
{
var dictVoT = TrickShotProbe.FindValidVelocityXs(PuzzleTarget);
Assert.NotEmpty(dictVoT);
int actual = dictVoT.Values.Max(l => l.Max(t => t.Item2));
Assert.Equal(20, actual);
}
public void Day17_Puzzle1_FindMaxY_OK()
{
var dictVoT = TrickShotProbe.FindValidVelocityYs(PuzzleTarget);
// Look in the dictionary for highest max value.
Assert.NotEmpty(dictVoT);
int actual = dictVoT.Values.Max(l => l.Max(t => t.Item3));
int maxT = dictVoT.Values.Max(l => l.Max(t => t.Item2));
Assert.Equal(7381, actual);
Assert.Equal(244, maxT);
}
public void Day17_TestProbe_shots_OK(int vx, int vy, bool expected)
{
var target = TestTarget;
var probe = new TrickShotProbe(vx, vy);
bool inside = false;
int count = 0;
do
{
probe.DoSecond();
count++;
inside = target.Inside(probe.X, probe.Y);
if (inside)
{
break;
}
} while (probe.Y >= target.Y1);
Assert.Equal(expected, inside);
}
public void Day17_Puzzle2_OK()
{
var dictVelXs = TrickShotProbe.FindValidVelocityXs(PuzzleTarget);
Assert.NotEmpty(dictVelXs);
var dictVelYs = TrickShotProbe.FindValidVelocityYs(PuzzleTarget);
Assert.NotEmpty(dictVelXs);
Dictionary <Point, int> dictVels = new Dictionary <Point, int>();
var velXs = new List <Tuple <int, int, int> >();
foreach (var list in dictVelXs.Values)
{
velXs.AddRange(list);
}
// find VelX that stop in target.
var stopVelx = velXs.Where(vx => vx.Item1 == vx.Item2).ToList();
Assert.Equal(2, stopVelx.Count);
int minTxs = stopVelx.Min(t => t.Item2);
var velYs = new List <Tuple <int, int, int> >();
foreach (var list in dictVelYs.Values)
{
velYs.AddRange(list);
}
var velYsOverMaxXTime = velYs.Where(vy => vy.Item2 >= minTxs);
foreach (var vy in velYsOverMaxXTime)
{
foreach (var vx in stopVelx)
{
var p = new Point(vx.Item1, vy.Item1);
if (!dictVels.ContainsKey(p))
{
dictVels.Add(p, 1);
}
else
{
dictVels[p]++;
}
}
}
foreach (var vx in velXs)
{
foreach (var vy in velYs.Where(t => t.Item2 == vx.Item2))
{
var p = new Point(vx.Item1, vy.Item1);
if (!dictVels.ContainsKey(p))
{
dictVels.Add(p, 1);
}
else
{
dictVels[p]++;
}
}
}
int actual = dictVels.Count;
Assert.Equal(3019, actual);
}
