Wavedash

LittleJS Wavedash Plugin

• The Wavedash twin of the Newgrounds plugin: achievements, leaderboards and cloud saves, the same shape so a game can switch, and stats and presence of Wavedash's own
• Wavedash serves the game's page and puts its SDK in window.Wavedash before the game runs, so nothing is bundled; off Wavedash (local, itch, GitHub Pages) there is none, and every call does nothing
• Make the plugin when the game can draw, at the end of gameInit: Wavedash.init is called then, and until it is Wavedash keeps its loading screen over the game
• WavedashMedal is a Medal with the identifier of its Wavedash achievement; on Wavedash an unlock is sent as that achievement and Wavedash shows its own toast in place of the engine's popup, off it the medal unlocks as any does
• Wavedash refuses an achievement until it has loaded the player's, a moment after launch, so refused and earlier unlocks are sent again every two seconds until it takes them; medals unlocked before, in the save, are sent too
• Leaderboards are made from code: give the plugin a table of them, each with how it sorts and shows its scores, and they are made at once, so each one exists from the first launch
• The SDK checks its arguments' types and throws on a wrong one, so every call passes real booleans and whole numbers and is caught; a game built with its own minifier keeps the SDK's names, see REFERENCE