`. We'll change to container with buttons. Need ensure overlay display flex works with multiple buttons. Could put buttons in div with flex row.\n\nImplementation details:\n- HTML: add #next-level and #go-back hidden? We can show/hide via class. Or always present and set display. Simpler: add three buttons, in ui.showOverlay(text, options={won:false}) set visibility: if won show next/go, hide restart. Else show restart hide next/go. Next Level if not available disabled? Determine in showOverlay if game has next. Could compute function in game: hasNextLevel(). Use game.canNextLevel().\n\n- CSS: #overlay-buttons display flex gap; buttons.\n\n- JS: in ui.js showOverlay: \n```\nexport function showOverlay(text, won) { \n resultEl.textContent=text; \n overlay.classList.remove('hidden');\n if (won) { ... }\n else { ... }\n const hasNext = game && game.hasNextLevel();\n nextLevelBtn.disabled = !hasNext;\n}\n```\nBut ui.js doesn't store game? It receives game in update and bind. We can store `let gameRef;` in bind assign. Or pass game to showOverlay. Better store boundGame.\n\nIn game.end: `if (this.ui) this.ui.showOverlay(won ? 'VICTORY' : 'DEFEAT', won);`\n\nAdd game.hasNextLevel() method: if stage < chapter stages count and stage unlocked? Actually after win, next stage may be unlocked. Return true if selectedStage < ch.stages. For next chapter maybe if stage==ch.stages and next chapter released. But progression only chapter1 released. Could allow next chapter? However stage selection only chapter1. We can just enable if stage < stages.\n\nAdd game.nextLevel(): if stage < stages, stage++; setStage; save to localStorage via menu? We can import menu saveJSON CHAPTER_KEY STAGE_KEY. Or directly. Then reset and running true. But overlay hide: ui.hideOverlay.\n\nGo back: hide overlay, game.running=false, menu.show().\n\nNeed handle game.onWin still called from end when won; record result before showing overlay. order already: end calls onWin then overlay. Good.\n\nPotential issue: after winning and going next, localStorage chapter/stage keys should update so menu remembers. Use menu functions? menu.js exports saveJSON? It doesn't export saveJSON. We can import * as menu from './menu.js'? But ui.js currently imports getUnitLevel from menu. Could import saveJSON? Let's add export to menu.js? Or handle in game. We can add methods in game using localStorage directly. Since game already sets stage. Add game.goToNextLevel which also persists. We'll import CHAPTERS. In ui.js bind next-level button: if game.hasNextLevel() game.nextLevel(); else maybe menu. Need access menu.show. ui.js doesn't import menu currently. Could import { show as showMenu } from './menu.js' and use it. But there may be circular dependencies? menu imports config, game? menu imports unitDefs from config only, and game is passed. ui imports menu. menu doesn't import ui. Fine.\n\nAlso game.js imports menu for addUnitXP/isAltUnlocked. So ui importing menu fine. Need ensure no cycles through menu importing ui? It doesn't. Good.\n\nLet's modify:\nui.js:\n```\nimport { getUnitLevel, show as showMenu } from './menu.js';\n...\nlet boundGame = null;\nexport function bind(game){ boundGame=game; ... }\n...\nexport function showOverlay(text, won){...}\nfunction updateOverlayButtons(won){ ... }\n```\nBut showOverlay needs game methods. Use boundGame.\n\nAdd event listeners:\nnextLevelBtn click: if boundGame && boundGame.hasNextLevel() then boundGame.nextLevel(); hideOverlay();\ngoBackBtn click: hideOverlay(); boundGame.running=false; showMenu(); \nrestartBtn stays.\n\nNeed reset: currently restart resets same stage. Good.\n\nCSS: add #overlay .btn-row maybe. Let's adjust CSS in style.css. Overlay currently flex column. We'll add #overlay .overlay-buttons { display:flex; gap:12px; }. Buttons share styling. Add #next-level { background:#22c55e } #go-back { background:#ef4444 }. Ensure visible only when not hidden. Use `.hidden` class.\n\nHTML overlay:\n```\n

\n \n \n \n

\n```\nUse hidden class per button.\n\nNeed also #restart maybe still full width on defeat? Could leave as is. On win hide restart. On defeat hide next/go.\n\nPotential user instruction: \"replace the replay button when you win with 2 buttons these are next level or go back\". So replay hidden on win. On defeat replay remains. We'll do that.\n\nNeed update showOverlay signature in game.end. In ui.js call `showOverlay` in any other place? Only hideOverlay. Good.\n\nLet's implement edits.\n\nAlso ensure `boundGame` variable and methods. game.hasNextLevel and game.nextLevel. Let's add import CHAPTERS in game.js. It currently imports WORLD_WIDTH, unitDefs, enemyDefs, unitAltDefs, enemyAltDefs, waves, getStage. Add CHAPTERS. Add methods.\n\ngame.nextLevel() localStorage keys maybe duplicate with menu. Use menu functions if exported. Since ui imports menu, and game already has localStorage use. We'll just set directly in game.nextLevel:\n```\nnextLevel() {\n const ch = CHAPTERS.find(c=>c.id===this.chapter);\n if (!ch) return;\n if (this.stage < ch.stages) {\n this.stage++;\n } else {\n const nextCh = CHAPTERS.find(c=>c.id===this.chapter+1 && c.released);\n if (nextCh) { this.chapter++; this.stage=1; }\n else return;\n }\n this.setStage(this.chapter,this.stage);\n try { localStorage.setItem('rb_chapter', JSON.stringify(this.chapter)); localStorage.setItem('rb_stage', JSON.stringify(this.stage)); } catch {}\n this.reset();\n this.running=true;\n}\n```\nBut careful: setStage already sets chapter/stage. Need reset uses stageData. After setStage, reset.\n\nAlso update menu's selectedChapter/selectedStage if user goes back? It reads localStorage on bind, but after next level storage updated. Good.\n\nPotential issue: menu.show not exported? menu.js exports show and hide. Good.\n\nNeed ensure ui.update maybe called. Fine.\n\nOne more thing: in ui.js, update recharges uses game.recharges object with all keys. Good.\n\nNow produce edits. Use multiple SEARCH/REPLACE blocks. Need exact text.\n\nFirst index.html overlay block.\n\nstyle.css overlay buttons.\n\nui.js: import, variables, showOverlay, bind event listeners.\n\ngame.js: import CHAPTERS, add methods, end call.\n\nLet's craft code carefully.\n\nui.js current top:\n```\nimport { getUnitLevel } from './menu.js';\n```\nChange to `import { getUnitLevel, show as showMenu } from './menu.js';`\n\nAdd after spawnButtons: `let boundGame = null;`\n\nIn bind add `boundGame = game;`.\n\nIn showOverlay implement.\n\nAdd const nextLevelBtn etc at top.\n\nNeed make sure event listeners added to next/go/restart. Already restart listener exists. Add new.\n\nIn showOverlay, also update ability? no.\n\nCSS:\nAdd after #restart styles:\n```\n#overlay-buttons {\n display: flex;\n gap: 12px;\n flex-wrap: wrap;\n justify-content: center;\n}\n\n#next-level {\n background: #22c55e;\n}\n\n#go-back {\n background: #ef4444;\n}\n```\nAlso to hide buttons: `.hidden { display:none }` works but #overlay-buttons uses flex, hidden class on button uses display:none important? Current .hidden global only in overlay and panels. There is no global .hidden rule. Need ensure buttons with hidden class are hidden. Add generic `.hidden { display: none !important; }`? But panels use `.panel.hidden { display: none; }`, overlay `.hidden { display: none; }`. Could add `#overlay-buttons button.hidden { display: none; }`. Better add global `.hidden { display: none !important; }` but may break `#menu:not(.active)`? no. For panels, .panel.hidden has display:none. If we add !important global it overrides. Fine? Could cause #menu not active uses opacity/pointer-events, not hidden. Good. But overlay hidden uses display:none. So global .hidden is fine. Let's add at top maybe. But existing .panel.hidden and #overlay.hidden rely on display:none. With global .hidden !important same. But #menu:not(.active) not .hidden. Good.\n\nAdd `.hidden { display: none !important; }` after * reset? But `#menu:not(.active)` no hidden. Fine. However `#ability-btn.hidden { display: none; }` already. If we add global, okay.\n\nLet's add generic `.hidden` rule in CSS.\n\ngame.js: import line `import { WORLD_WIDTH, unitDefs, enemyDefs, unitAltDefs, enemyAltDefs, waves, getStage } from './config.js';` add CHAPTERS.\n\nAdd methods near setSquad maybe.\n\nend method change `this.ui.showOverlay(won ? 'VICTORY' : 'DEFEAT');` to `this.ui.showOverlay(won ? 'VICTORY' : 'DEFEAT', won);`.\n\nPotential issue: `this.ui.showOverlay` might be called when ui not loaded? It checks this.ui. Fine.\n\nNow produce answer. Also describe as requested.\n\nindex.html\n```index.html\n```\n\nstyle.css\n```style.css\n```\n\nui.js\n```ui.js\n```\n\nui.js\n```ui.js\n```\n\nui.js\n```ui.js\n```\n\nui.js\n```ui.js\n```\n\nui.js\n```ui.js\n```\n\ngame.js\n```game.js\n```\n\ngame.js\n```game.js\n```\n\ngame.js\n```game.js\n```\n\nSummary: I replaced the single Replay button on the win overlay with two buttons, Next Level and Go Back, while keeping Replay for losses. Next Level advances to the next stage (or chapter) and persists your progress, and Go Back returns you to the 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Yayaxchanguru

Arena Fighters: Remade

Tavern

Robloxians Battle

Cartoon Episode Generator