osu/osu.Game.Rulesets.Catch/Replays/CatchAutoGenerator.cs

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2018-04-13 09:19:50 +00:00
// Copyright (c) 2007-2018 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using System.Linq;
using osu.Framework.MathUtils;
using osu.Game.Beatmaps;
using osu.Game.Rulesets.Catch.Objects;
using osu.Game.Rulesets.Catch.UI;
using osu.Game.Rulesets.Replays;
using osu.Game.Users;
namespace osu.Game.Rulesets.Catch.Replays
{
internal class CatchAutoGenerator : AutoGenerator<CatchHitObject>
{
public const double RELEASE_DELAY = 20;
public CatchAutoGenerator(Beatmap<CatchHitObject> beatmap)
: base(beatmap)
{
Replay = new Replay { User = new User { Username = @"Autoplay" } };
}
protected Replay Replay;
public override Replay Generate()
{
// todo: add support for HT DT
const double dash_speed = CatcherArea.Catcher.BASE_SPEED;
const double movement_speed = dash_speed / 2;
float lastPosition = 0.5f;
double lastTime = 0;
// Todo: Realistically this shouldn't be needed, but the first frame is skipped with the way replays are currently handled
Replay.Frames.Add(new CatchReplayFrame(-100000, lastPosition));
void moveToNext(CatchHitObject h)
{
float positionChange = Math.Abs(lastPosition - h.X);
double timeAvailable = h.StartTime - lastTime;
//So we can either make it there without a dash or not.
double speedRequired = positionChange / timeAvailable;
bool dashRequired = speedRequired > movement_speed && h.StartTime != 0;
// todo: get correct catcher size, based on difficulty CS.
const float catcher_width_half = CatcherArea.CATCHER_SIZE / CatchPlayfield.BASE_WIDTH * 0.3f * 0.5f;
if (lastPosition - catcher_width_half < h.X && lastPosition + catcher_width_half > h.X)
{
//we are already in the correct range.
lastTime = h.StartTime;
Replay.Frames.Add(new CatchReplayFrame(h.StartTime, lastPosition));
return;
}
if (h is BananaShower.Banana)
{
// auto bananas unrealistically warp to catch 100% combo.
Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
}
else if (h.HyperDash)
{
Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable, lastPosition));
Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
}
else if (dashRequired)
{
//we do a movement in two parts - the dash part then the normal part...
double timeAtNormalSpeed = positionChange / movement_speed;
double timeWeNeedToSave = timeAtNormalSpeed - timeAvailable;
double timeAtDashSpeed = timeWeNeedToSave / 2;
float midPosition = (float)Interpolation.Lerp(lastPosition, h.X, (float)timeAtDashSpeed / timeAvailable);
//dash movement
Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable + 1, lastPosition, true));
Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeAvailable + timeAtDashSpeed, midPosition));
Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
}
else
{
double timeBefore = positionChange / movement_speed;
Replay.Frames.Add(new CatchReplayFrame(h.StartTime - timeBefore, lastPosition));
Replay.Frames.Add(new CatchReplayFrame(h.StartTime, h.X));
}
lastTime = h.StartTime;
lastPosition = h.X;
}
foreach (var obj in Beatmap.HitObjects)
{
switch (obj)
{
case Fruit _:
moveToNext(obj);
break;
}
foreach (var nestedObj in obj.NestedHitObjects.Cast<CatchHitObject>())
{
switch (nestedObj)
{
case BananaShower.Banana _:
case TinyDroplet _:
case Droplet _:
case Fruit _:
moveToNext(nestedObj);
break;
}
}
}
return Replay;
}
}
}