Container queries crash if clickOnSlot is the first step

[kristofbolyai]

[20:32:24] [Render thread/ERROR] (wynntils) Exception thrown by com.wynntils.screens.questbook.WynntilsQuestBookScreen.init()
 java.lang.NullPointerException: Cannot invoke "com.wynntils.handlers.container.type.ContainerContent.containerId()" because "container" is null
	at com.wynntils.handlers.container.scriptedquery.QueryStep.lambda$clickOnSlot$3(QueryStep.java:46) ~[main/:?]
	at com.wynntils.handlers.container.scriptedquery.QueryStep.startStep(QueryStep.java:85) ~[main/:?]
	at com.wynntils.handlers.container.scriptedquery.ScriptedContainerQuery.startStep(ScriptedContainerQuery.java:51) ~[main/:?]
	at com.wynntils.handlers.container.scriptedquery.FixedQueryStep.startStep(FixedQueryStep.java:23) ~[main/:?]
	at com.wynntils.handlers.container.scriptedquery.ScriptedContainerQuery.startStep(ScriptedContainerQuery.java:51) ~[main/:?]
	at com.wynntils.handlers.container.ContainerQueryHandler.runQuery(ContainerQueryHandler.java:73) ~[main/:?]
	at com.wynntils.handlers.container.scriptedquery.ScriptedContainerQuery.executeQuery(ScriptedContainerQuery.java:46) ~[main/:?]
	at com.wynntils.models.content.ContentBookQueries.queryContentBook(ContentBookQueries.java:140) ~[main/:?]
	at com.wynntils.models.content.ContentModel.scanContentBook(ContentModel.java:237) ~[main/:?]
	at com.wynntils.models.quests.QuestModel.rescanQuestBook(QuestModel.java:61) ~[main/:?]
	at com.wynntils.screens.questbook.WynntilsQuestBookScreen.doInit(WynntilsQuestBookScreen.java:77) ~[main/:?]
	at com.wynntils.screens.base.WynntilsScreen.init(WynntilsScreen.java:37) ~[main/:?]
	at net.minecraft.client.gui.screens.Screen.init(Screen.java:427) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.setScreen(Minecraft.java:1079) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at com.wynntils.screens.base.WynntilsMenuScreenBase.openBook(WynntilsMenuScreenBase.java:32) ~[main/:?]
	at com.wynntils.features.ui.WynntilsContentBookFeature.tryCancelQuestBookOpen(WynntilsContentBookFeature.java:123) ~[main/:?]
	at com.wynntils.features.ui.WynntilsContentBookFeature.onUseItem(WynntilsContentBookFeature.java:97) ~[main/:?]
	at com.wynntils.features.ui.__WynntilsContentBookFeature_onUseItem_UseItemEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:73) ~[eventbus-6.0.5.jar:?]
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) ~[eventbus-6.0.5.jar:?]
	at net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) ~[eventbus-6.0.5.jar:?]
	at com.wynntils.core.events.EventBusWrapper.post(EventBusWrapper.java:54) ~[main/:?]
	at com.wynntils.core.WynntilsMod.postEvent(WynntilsMod.java:69) ~[main/:?]
	at com.wynntils.core.events.MixinHelper.post(MixinHelper.java:21) ~[main/:?]
	at net.minecraft.client.multiplayer.MultiPlayerGameMode.handler$zbp000$wynntils$useItemPre(MultiPlayerGameMode.java:661) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.multiplayer.MultiPlayerGameMode.useItem(MultiPlayerGameMode.java) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.startUseItem(Minecraft.java:1819) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.handleKeybinds(Minecraft.java:2053) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.tick(Minecraft.java:1880) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1180) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.Minecraft.run(Minecraft.java:801) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.minecraft.client.main.Main.main(Main.java:237) ~[minecraft-merged-project-@fabric-1.19.4-loom.mappings.1_19_4.layered+hash.529533973-v2.jar:?]
	at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:468) ~[fabric-loader-0.14.21.jar:?]
	at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74) ~[fabric-loader-0.14.21.jar:?]
	at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.14.21.jar:?]
	at net.fabricmc.devlaunchinjector.Main.main(Main.java:86) ~[dev-launch-injector-0.2.1+build.8.jar:?]
	at dev.architectury.transformer.TransformerRuntime.main(TransformerRuntime.java:219) ~[architectury-transformer-5.2.76-runtime.jar:?]

[kristofbolyai]

Happened while I am working on a better way to open the quest book.

[magicus]

Yeah... you can't really do that. There is no previous container, so we pass in null. (This too is documented ;-))

What was your intention? To work with an existing open container?

[kristofbolyai]

I sent a patch containing what was trying to make the queries more stable...

[magicus]

Ah, I see. Yeah, your patch was good, but the clickOnSlot method in the scripted query assumes you will receive a ContainerContent object from a preceding container query operation. This, however, is not documented. :-D