Sunpy/opsu-dance
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Load beatmap background images in a new thread.

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This eliminates the game-wide lag (100-200ms on my computer) when switching song nodes. Attempted to mask the loading time with a fade-in effect.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>
This commit is contained in:
Jeffrey Han
2015-09-03 19:24:07 -05:00
parent e767800702
commit 3214916d60
7 changed files with 280 additions and 48 deletions
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25
src/itdelatrisu/opsu/states/SongMenu.java
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@@ -216,6 +216,12 @@ public class SongMenu extends BasicGameState {
/** Whether the song folder changed (notified via the watch service). */
private boolean songFolderChanged = false;
/** The last background image. */
private File lastBackgroundImage;
/** Background alpha level (for fade-in effect). */
private AnimatedValue bgAlpha = new AnimatedValue(800, 0f, 1f, AnimationEquation.OUT_QUAD);
/**
* Beatmaps whose difficulties were recently computed (if flag is non-null).
* Unless the Boolean flag is null, then upon removal, the beatmap's objects will
@@ -344,7 +350,7 @@ public class SongMenu extends BasicGameState {
// background
if (focusNode != null) {
Beatmap focusNodeBeatmap = focusNode.getBeatmapSet().get(focusNode.beatmapIndex);
if (!focusNodeBeatmap.drawBG(width, height, 1.0f, true))
if (!focusNodeBeatmap.drawBackground(width, height, bgAlpha.getValue(), true))
GameImage.PLAYFIELD.getImage().draw();
}
@@ -545,6 +551,13 @@ public class SongMenu extends BasicGameState {
}
}
// fade in background
if (focusNode != null) {
Beatmap focusNodeBeatmap = focusNode.getBeatmapSet().get(focusNode.beatmapIndex);
if (!focusNodeBeatmap.isBackgroundLoading())
bgAlpha.update(delta);
}
// search
search.setFocus(true);
searchTimer += delta;
@@ -996,6 +1009,7 @@ public class SongMenu extends BasicGameState {
beatmapMenuTimer = -1;
searchTransitionTimer = SEARCH_TRANSITION_TIME;
songInfo = null;
bgAlpha.setTime(bgAlpha.getDuration());
// reset song stack
randomStack = new Stack<SongNode>();
@@ -1253,6 +1267,14 @@ public class SongMenu extends BasicGameState {
if (startNode.index == focusNode.index && startNode.beatmapIndex == -1)
changeIndex(1);
// load background image
beatmap.loadBackground();
boolean isBgNull = lastBackgroundImage == null || beatmap.bg == null;
if ((isBgNull && lastBackgroundImage != beatmap.bg) || (!isBgNull && !beatmap.bg.equals(lastBackgroundImage))) {
bgAlpha.setTime(0);
lastBackgroundImage = beatmap.bg;
}
return oldFocus;
}
@@ -1352,6 +1374,7 @@ public class SongMenu extends BasicGameState {
searchTimer = SEARCH_DELAY;
searchTransitionTimer = SEARCH_TRANSITION_TIME;
searchResultString = null;
lastBackgroundImage = null;
// reload songs in new thread
reloadThread = new Thread() {