Struct BlockToolModificationEvent 

pub struct BlockToolModificationEvent<'a> {
    pub stack: &'a ItemStack,
    pub tool: &'a ToolUse,
    pub final_state: &'a mut Option<BlockState>,
    pub cancelled: bool,
}

What Hooks::block_tool_modification is told. Each field is that hook’s argument of the same name, described in the hook’s doc.

Fields

stack: &'a ItemStack

tool: &'a ToolUse

final_state: &'a mut Option<BlockState>

cancelled: bool

Whether the event is cancelled: by the game or an earlier listener, or by this one setting it. Only a listener that receives cancelled events (#[listener(receive_cancelled)]) sees true, and setting it back to false lets the game’s behaviour run.