Highlighting blocks in game for debugging

[clowcadia]

Is there a way to simply add a texture to a block in game to highlight it, when trying to effect it in code. I mean like lets say i want convert all grass blocks to air, but before i want to know the area of effect in game to see if it is the right grass blocks before i make changes

[Draco18s]

No

[clowcadia]

Ok, but what is this , and how can i use it

DrawBlockHighlightEvent

 

[Draco18s]

That is the event that deals with drawing the wireframe around the block the player is looking at.

That doesn't do what you want, not in the way you think.

[clowcadia]

so it cant just do a wireframe around specific blocks that i have chosen? without any of my interactions

[Draco18s]

Events don't do that.

Events are fired when the vanilla does something and you want to change that behavior.

Events are not to make vanilla do something.

[clowcadia]

so i cant throw an event while i am going through a for loop of block positions?

[clowcadia]

or what about having a draw frame over selected blocks from the positions in a list that are processed through for loop

[Draco18s]

You would need to write that code yourself.

There is no way to tell vanilla to highlight a block, even if vanilla has code that does it. You need to recreate it yourself, in your own code, and invoke your own code.

 

That, however, still leaves you the problem of displaying it as debug output which you can't, because your code will say "draw these blocks" then "delete all these blocks" and both of those will execute before any render code gets done to actually draw the highlight.  The blocks are already gone.

[clowcadia]

question, so minecraft will not allow blocks to be changed or spawned while the game is running?

i am trying to do something like this by placing glass in a position but it will not do so until the world is reloaded

[Draco18s]

Then you're doing it wrong.

 

And I don't even know why I keep replying to your threads.  Some sort of masochism, I suppose.

[clowcadia]

Give me a brake man, half the time yes half the time i am asking valid questions. yes i admit sometimes i need to take my time and try things, for this yes its like the validity of my question the glass apears half the time but the air also becomes solid where glass should be, then i need to reload the world so the rest of the glass appears

[clowcadia]

and u must be helping me because i am asking question about the core modding techniques that are simplest to answear