add FOV feature

src/main/java/com/replaymod/pathing/properties/FovProperty.java

@@ -0,0 +1,48 @@
+package com.replaymod.pathing.properties;
+
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.replaymod.replaystudio.pathing.property.AbstractProperty;
+import com.replaymod.replaystudio.pathing.property.PropertyPart;
+import com.replaymod.replaystudio.pathing.property.PropertyParts;
+import de.johni0702.minecraft.gui.utils.NonNull;
+import org.apache.commons.lang3.tuple.Triple;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
+
+public class FovProperty extends AbstractProperty<Triple<Float, Float, Float>> {
+    public static final float DEFAULT_FOV = 70.0f;
+
+    public static volatile Float currentOverride = null;
+
+    public static final FovProperty FOV = new FovProperty("fov", DEFAULT_FOV);
+
+    public final PropertyPart<Triple<Float, Float, Float>> VALUE =
+            new PropertyParts.ForFloatTriple(this, true, PropertyParts.TripleElement.LEFT);
+
+    private FovProperty(String id, float defaultValue) {
+        super(id, "replaymod.gui.editkeyframe." + id, null, Triple.of(defaultValue, 0f, 0f));
+    }
+
+    @Override
+    public Collection<PropertyPart<Triple<Float, Float, Float>>> getParts() {
+        return Collections.singletonList(VALUE);
+    }
+
+    @Override
+    public void applyToGame(Triple<Float, Float, Float> value, @NonNull Object replayHandler) {
+        currentOverride = value.getLeft();
+    }
+
+    @Override
+    public void toJson(JsonWriter writer, Triple<Float, Float, Float> value) throws IOException {
+        writer.value(value.getLeft());
+    }
+
+    @Override
+    public Triple<Float, Float, Float> fromJson(JsonReader reader) throws IOException {
+        return Triple.of((float) reader.nextDouble(), 0f, 0f);
+    }
+}