63 lines
1.5 KiB
Java
63 lines
1.5 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.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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* Adds a new property.
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*/
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public final class AddKeyframe implements Change {
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@NonNull
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public static AddKeyframe create(Path path, long time) {
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return new AddKeyframe(path.getTimeline().getPaths().indexOf(path), time);
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}
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AddKeyframe(int path, long time) {
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this.path = path;
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this.time = time;
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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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* Time at which the property should be injected.
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*/
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private final long time;
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/**
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* Index of the newly created property.
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*/
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private int index;
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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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Keyframe keyframe = path.insert(time);
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index = Iterables.indexOf(path.getKeyframes(), Predicates.equalTo(keyframe));
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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.remove(Iterables.get(path.getKeyframes(), index), true);
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applied = false;
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}
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}
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