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Deal the straddle, instead of leaving the dealer to fake it

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A straddle is a blind raise put out before the cards by the player left of the
big blind, for twice it. Home games run them constantly, and the tool had no
idea they existed — so a dealer's only way through was to deal the hand and have
the straddler "raise" to $4, which gets the money right and the other two rules
wrong.

There are three at once:

  - the amount doubles as it goes left, and re-straddles carry on doubling;
  - first to act is left of the *straddler*, not left of the big blind, and the
    straddler keeps the option when it comes back round even if nobody raised;
  - the minimum raise is twice the straddle. Measured off the big blind
    underneath it, a $2/$4 game prices the next raise at $6, and every player at
    the table will argue — correctly.

Tap Straddle on the deal prompt and the tool posts it, puts the right player on
the clock and prices the raise. The seat wears an STR badge for the hand, read
off what the deal actually posted rather than off the count, so the badge can't
outlive the chips it stands for. It's a one-hand decision, like posting in, and
it clears when the button moves.

The control sits on the deal row rather than a line of its own: measured at
390x844, its own line cost 44px of felt on every deal prompt, straddle or no
straddle, and this bar is docked over the seats. Three buttons across a 360px
phone want to wrap, which made the bar 64px taller and put the bottom seat three
fifths behind it — this layout deliberately doesn't shrink the felt to suit, so
the deal button is given a 7rem floor instead, which keeps the row to one line
and the cost to nothing.

20 new tests, checked by breaking each of the three rules on purpose first: the
wrong first-to-act, the minimum measured off the big blind, and a flat rather
than doubling chain each fail a different one.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_015bnp7xKUPFFSpwkYNFaPgb
This commit is contained in:
jheaps
2026-09-02 03:32:17 -06:00
co-authored by Claude Opus 5
parent b97453fba1
commit fc866597eb
7 changed files with 400 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files
JoshHeaps.Net/wwwroot/js/casino/holdem/actionBar.js
+49 -4
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@@ -592,6 +592,43 @@ const ActionBar = {
// by itself the instant the previous hand ended, which meant blinds were committed
// while people were still sitting down — and the blind badges would drift away from
// the money already posted as seats changed. Now the dealer says when.
// ", Dee straddles $4" — read out as part of what goes in before the cards, because
// that is what it is. Two of them read as "Dee straddles $4, Eve $8": the second
// name doesn't need the verb again, and the bar has no room for it.
straddleClause(preview) {
const straddles = preview.straddles || [];
if (straddles.length === 0) return "";
const name = i => HoldemState.displayName(this.state.seats[i], i);
const [first, ...rest] = straddles;
return `, ${name(first.index)} straddles ${Money.format(first.amount)}` +
rest.map(s => `, ${name(s.index)} ${Money.format(s.amount)}`).join("");
},
// Turning it on, doubling it, and calling it off. Heads-up there is no seat left of
// the big blind to straddle from, so nothing is offered rather than a button that
// would do nothing.
straddleButtons(preview) {
const on = (preview.straddles || []).length;
const max = preview.maxStraddles || 0;
if (max <= 0) return [];
const buttons = [];
const nextAmount = Money.format(this.state.bigBlind * Math.pow(2, on + 1));
if (on < max) {
buttons.push(this.button(
on === 0 ? `Straddle ${nextAmount}` : `Re-straddle ${nextAmount}`,
"actionStraddle",
() => this.commit(on === 0 ? "the straddle" : "the re-straddle",
() => { this.state.straddleCount = on + 1; })));
}
if (on > 0) {
buttons.push(this.button("No straddle", "actionStraddle actionStraddleOff",
() => this.commit("calling the straddle off",
() => { this.state.straddleCount = 0; })));
}
return buttons;
},
renderDealPrompt() {
const wrap = document.createElement("div");
wrap.className = "dealPrompt";
@@ -689,11 +726,14 @@ const ActionBar = {
// A dead small blind is a hand with only one blind in it. Saying "nobody posts
// the small blind" out loud is the whole point — a dealer who reads a preview
// with a blind missing and isn't told why will assume the tool has lost track.
line.textContent = preview.deadSmallBlind
const blinds = document.createElement("span");
blinds.textContent = (preview.deadSmallBlind
? `No small blind this hand, ${name(preview.bbIndex)} posts ${Money.format(preview.bigBlind)}`
: `${name(preview.sbIndex)} posts ${Money.format(preview.smallBlind)}, ` +
`${name(preview.bbIndex)} posts ${Money.format(preview.bigBlind)}` +
`${preview.headsUp ? " · heads-up" : ""}${preview.manual ? " · blinds set by hand" : ""}`;
`${name(preview.bbIndex)} posts ${Money.format(preview.bigBlind)}`) +
this.straddleClause(preview) +
`${preview.headsUp ? " · heads-up" : ""}${preview.manual ? " · blinds set by hand" : ""}`;
line.appendChild(blinds);
wrap.appendChild(line);
// Why a position is missing. Both of these are the dead button rule doing its
@@ -767,7 +807,12 @@ const ActionBar = {
}
const row = document.createElement("div");
row.className = "actionButtons";
row.className = "actionButtons dealPromptButtons";
// Beside the deal button rather than on a line of its own. Measured at 390x844:
// its own line cost 44px of felt on every deal prompt, straddle or no straddle,
// and this row is already there and already 44px tall. It reads in the order it
// happens, too — say the straddle, then deal.
this.straddleButtons(preview).forEach(button => row.appendChild(button));
row.appendChild(this.button("Post blinds & deal", "actionDeal", () => {
this.commit("dealing the hand", () => Betting.beginHand(this.state));
}));