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Giving players potion effects when hit by a projectile


Sear_Heat

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There is no event for when a projectile hits an entity of any type.

 

However. You can use LivingHurtEvent - check if the event's entity (event.entity) is instance of the Player.

If I remember correctly, there is another a field where you can see the damage source, check if the damage source is from the Arrow before giving the entity (Player) a potion effect.

 

 

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Read up tutorials on event handling for Minecraft forge. And yes, event.entity is the entity hurt, and event.source.getEntity() is the entity that caused the damage.

We all stuff up sometimes... But I seem to be at the bottom of that pot.

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Not sure what type of projectile you've got going there, but if it extends EntityThrowable then you can override the onImpact method. You can see how vanilla's EntityEnderPearl deals damage to what it hits there.

 

If it's more like an arrow, then perhaps you can override onCollideWithPlayer. Not sure how that will work out, though. EntityArrow does it but only for letting players pick up their arrows again, not to deal damage. You'd probably instead have to override onUpdate and handle the flying through the air and all that yourself (you could mostly copy EntityArrow so it shouldn't be too bad) or use a method like that suggested above.

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org.spongepowered.asm.mixin.injection.struct.InjectionInfo.<init>(InjectionInfo.java:308) ~[mixin-0.8.5.jar:0.8.5+Jenkins-b310.git-155314e6e91465dad727e621a569906a410cd6f4] at com.llamalad7.mixinextras.injector.MixinExtrasInjectionInfo.<init>(MixinExtrasInjectionInfo.java:10) ~[MixinExtras-0.3.6.jar%23188!/:?] at com.llamalad7.mixinextras.injector.ModifyExpressionValueInjectionInfo.<init>(ModifyExpressionValueInjectionInfo.java:15) ~[MixinExtras-0.3.6.jar%23188!/:?] at jdk.internal.reflect.GeneratedConstructorAccessor27.newInstance(Unknown Source) ~[?:?] at jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?] at java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) ~[?:?] at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] at org.spongepowered.asm.mixin.injection.struct.InjectionInfo$InjectorEntry.create(InjectionInfo.java:149) 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~[client-1.20.1-20230612.114412-srg.jar%23171!/:?] at net.minecraft.client.main.Main.main(Main.java:149) ~[1.20.1-forge-47.2.0.jar:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?] at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?] at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?] at java.lang.reflect.Method.invoke(Method.java:568) ~[?:?] at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.runTarget(CommonLaunchHandler.java:111) ~[fmlloader-1.20.1-47.2.0.jar:?] at net.minecraftforge.fml.loading.targets.CommonLaunchHandler.clientService(CommonLaunchHandler.java:99) ~[fmlloader-1.20.1-47.2.0.jar:?] at net.minecraftforge.fml.loading.targets.CommonClientLaunchHandler.lambda$makeService$0(CommonClientLaunchHandler.java:25) ~[fmlloader-1.20.1-47.2.0.jar:?] at 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