How to update existing blocks on load?

[Lycanus Darkbinder]

I've been working on creating a SSP block that turns on / off much like the Redstone Lamp but without the need for redstone.

 

I'm curious though because if I place one down and turn it on and then log out, when I log back in it isn't glowing unless I toggle the switch again.

 

I incorrectly assumed that onBlockAdded() fired both when you placed the block and when the world was loaded. I looked at the various redstone*.java files but wasn't quite sure how it saves state from session to session.

 

Any advice (examples or things I can read) as to how you tell the world when it loads that block XYZ should be lit?

 

Thanks!

 

[Lycanus Darkbinder]

I've been working on creating a SSP block that turns on / off much like the Redstone Lamp but without the need for redstone.

 

I'm curious though because if I place one down and turn it on and then log out, when I log back in it isn't glowing unless I toggle the switch again.

 

I incorrectly assumed that onBlockAdded() fired both when you placed the block and when the world was loaded. I looked at the various redstone*.java files but wasn't quite sure how it saves state from session to session.

 

Any advice (examples or things I can read) as to how you tell the world when it loads that block XYZ should be lit?

 

Thanks!

 

[Lycanus Darkbinder]

Well, I figured it out so I'll post here in case any other newcomers get stuck...

 

There were actually two things I was doing wrong:

 

1. I commented out my scheduleBlockUpdate() inside onBlockAdded()

 

This is required to schedule the block for updates after logging out / in. Part of the data saved with the world is the tickRate for the block and when it's next scheduled

 

2. Existing blocks don't get updated after making changes

 

I made the code changes but the blocks that were already in the world needed to be destroyed and replaced. I should've realized this earlier but hey, it's late and I'm tired.

[Lycanus Darkbinder]

Well, I figured it out so I'll post here in case any other newcomers get stuck...

 

There were actually two things I was doing wrong:

 

1. I commented out my scheduleBlockUpdate() inside onBlockAdded()

 

This is required to schedule the block for updates after logging out / in. Part of the data saved with the world is the tickRate for the block and when it's next scheduled

 

2. Existing blocks don't get updated after making changes

 

I made the code changes but the blocks that were already in the world needed to be destroyed and replaced. I should've realized this earlier but hey, it's late and I'm tired.