feat: scaffold mvp shell and content runtime

js/gameplay/difficulty/classify-deadlock.js

@@ -0,0 +1,47 @@
+import { getClickablePieces } from './overlap-graph.js'
+
+function getPotentialMatches(slot, clickablePieces) {
+  return clickablePieces.filter((piece) => {
+    const sameCount = slot.filter((slottedPiece) => slottedPiece.elementId === piece.elementId).length
+    return sameCount >= 2
+  })
+}
+
+export function classifyDeadlock(runtimeState, boardState) {
+  const slot = runtimeState.slot ?? []
+  const bypass = runtimeState.bypass ?? []
+  const clickablePieces = getClickablePieces(boardState)
+
+  if (slot.length < 7) {
+    return {
+      type: 'none',
+      clickablePieces,
+    }
+  }
+
+  const matchablePieces = getPotentialMatches(slot, clickablePieces)
+
+  if (matchablePieces.length > 0) {
+    return {
+      type: 'none',
+      clickablePieces,
+      matchablePieces,
+    }
+  }
+
+  if (bypass.length > 0) {
+    return {
+      type: 'soft',
+      clickablePieces,
+      matchablePieces: [],
+    }
+  }
+
+  return {
+    type: 'hard',
+    clickablePieces,
+    matchablePieces: [],
+  }
+}
+
+export default classifyDeadlock