/*
* This file is part of Skript.
*
* Skript is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Skript is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Skript. If not, see <http://www.gnu.org/licenses/>.
*
*
* Copyright 2011, 2012 Peter Güttinger
*
*/
package ch.njol.skript.expressions;
import org.bukkit.event.Event;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.ScriptLoader;
import ch.njol.skript.Skript;
import ch.njol.skript.classes.Changer.ChangeMode;
import ch.njol.skript.doc.Description;
import ch.njol.skript.doc.Examples;
import ch.njol.skript.doc.Name;
import ch.njol.skript.doc.Since;
import ch.njol.skript.events.bukkit.ExperienceSpawnEvent;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.ExpressionType;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.util.SimpleExpression;
import ch.njol.skript.util.Experience;
import ch.njol.util.Kleenean;
/**
* @author Peter Güttinger
*/
@Name("Experience")
@Description("How much experience was spawned in an <a href='../events/#experience_spawn'>experience spawn</a> event. Can be changed.")
@Examples({"on experience spawn:",
" add 5 to the spawned experience"})
@Since("2.1")
public class ExprExperience extends SimpleExpression<Experience> {
static {
Skript.registerExpression(ExprExperience.class, Experience.class, ExpressionType.SIMPLE, "[the] (spawned|dropped|) [e]xp[erience] [orb[s]]");
}
@Override
public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parseResult) {
if (!ScriptLoader.isCurrentEvent(ExperienceSpawnEvent.class)) {
Skript.error("The experience expression can only be used in experience spawn events");
return false;
}
return true;
}
@Override
@Nullable
protected Experience[] get(final Event e) {
if (!(e instanceof ExperienceSpawnEvent))
return new Experience[0];
return new Experience[] {new Experience(((ExperienceSpawnEvent) e).getSpawnedXP())};
}
@Override
@Nullable
public Class<?>[] acceptChange(final ChangeMode mode) {
switch (mode) {
case ADD:
case DELETE:
case REMOVE:
case REMOVE_ALL:
return new Class[] {Experience[].class, Number[].class};
case SET:
return new Class[] {Experience.class, Number.class};
case RESET:
return null;
}
return null;
}
@Override
public void change(final Event e, final @Nullable Object[] delta, final ChangeMode mode) {
if (!(e instanceof ExperienceSpawnEvent))
return;
if (delta == null) {
((ExperienceSpawnEvent) e).setSpawnedXP(0);
return;
}
double d = 0;
for (final Object o : delta) {
final double v = o instanceof Experience ? ((Experience) o).getXP() : ((Number) o).doubleValue();
switch (mode) {
case ADD:
case SET:
d += v;
break;
case REMOVE:
case REMOVE_ALL:
d -= v;
break;
case RESET:
case DELETE:
assert false;
break;
}
}
((ExperienceSpawnEvent) e).setSpawnedXP(Math.max(0, (int) Math.round(((ExperienceSpawnEvent) e).getSpawnedXP() + d)));
}
@Override
public boolean isSingle() {
return true;
}
@Override
public Class<? extends Experience> getReturnType() {
return Experience.class;
}
@Override
public String toString(final @Nullable Event e, final boolean debug) {
return "the experience";
}
}