Punctuation of direct speech

[Bluefields]

Is this correctly punctuated ?

We walked into the room. "I'm not going tonight," Tom said, "the same old crowd will be there."

1. I've heard that a new speech turn should begin on a new line.
2. Tom says two sentences, but the punctuation is the same as if the second quote continued a sentence.

[Casiopea]

Welcome, Bluefields.

Click here to see Rules for Punctuating Conversation (Direct Speech). Scroll down to where it says "Example".

All the best.

[Bluefields]

Hi Casiopea,
Sorry to bother you again, but I have a technical problem when I click "here". Can you tell me the answer ?

[river]

Is this correctly punctuated ?

We walked into the room. "I'm not going tonight," Tom said, "the same old crowd will be there."

1. I've heard that a new speech turn should begin on a new line.
2. Tom says two sentences, but the punctuation is the same as if the second quote continued a sentence.

"I'm not going tonight," said Tom. "The same old crowd will be there."

[Bluefields]

Thanks, river.
I've read the rules and example suggested by Casiopea, but still don't understand about new speech turns on new lines. In the example, why isn't "Oops !" on a new line ?