68 lines
1.9 KiB
Java
68 lines
1.9 KiB
Java
package com.replaymod.pathing.change;
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import com.google.common.base.Preconditions;
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import com.google.common.base.Predicates;
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import com.google.common.collect.Iterables;
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import com.replaymod.pathing.interpolation.Interpolator;
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import com.replaymod.pathing.path.Keyframe;
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import com.replaymod.pathing.path.Path;
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import com.replaymod.pathing.path.Timeline;
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import lombok.NonNull;
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/**
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* Removes a property.
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*/
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public final class RemoveKeyframe implements Change {
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@NonNull
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public static RemoveKeyframe create(@NonNull Path path, @NonNull Keyframe keyframe) {
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return new RemoveKeyframe(path.getTimeline().getPaths().indexOf(path),
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Iterables.indexOf(path.getKeyframes(), Predicates.equalTo(keyframe)));
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}
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RemoveKeyframe(int path, int index) {
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this.path = path;
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this.index = index;
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}
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/**
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* Path index
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*/
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private final int path;
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/**
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* Index of the property to be removed.
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*/
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private final int index;
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private volatile Keyframe removedKeyframe;
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private volatile Interpolator removedInterpolator;
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private boolean applied;
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@Override
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public void apply(Timeline timeline) {
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Preconditions.checkState(!applied, "Already applied!");
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Path path = timeline.getPaths().get(this.path);
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if (index < path.getSegments().size()) {
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removedInterpolator = Iterables.get(path.getSegments(), index).getInterpolator();
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}
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path.remove(removedKeyframe = Iterables.get(path.getKeyframes(), index), true);
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applied = true;
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}
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@Override
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public void undo(Timeline timeline) {
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Preconditions.checkState(applied, "Not yet applied!");
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Path path = timeline.getPaths().get(this.path);
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path.insert(removedKeyframe);
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if (removedInterpolator != null) {
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Iterables.get(path.getSegments(), index).setInterpolator(removedInterpolator);
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}
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applied = false;
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}
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}
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