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Keyboard types\nexport enum Keys {\n ArrowUp = 'ArrowUp',\n ArrowDown = 'ArrowDown',\n ArrowLeft = 'ArrowLeft',\n ArrowRight = 'ArrowRight',\n KeyW = 'KeyW',\n KeyA = 'KeyA',\n KeyS = 'KeyS',\n KeyD = 'KeyD',\n Space = 'Space',\n Enter = 'Enter',\n Escape = 'Escape',\n Tab = 'Tab',\n ShiftLeft = 'ShiftLeft',\n ShiftRight = 'ShiftRight',\n ControlLeft = 'ControlLeft',\n ControlRight = 'ControlRight',\n AltLeft = 'AltLeft',\n AltRight = 'AltRight',\n Digit0 = 'Digit0',\n Digit1 = 'Digit1',\n Digit2 = 'Digit2',\n Digit3 = 'Digit3',\n Digit4 = 'Digit4',\n Digit5 = 'Digit5',\n Digit6 = 'Digit6',\n Digit7 = 'Digit7',\n Digit8 = 'Digit8',\n Digit9 = 'Digit9',\n KeyE = 'KeyE',\n KeyQ = 'KeyQ',\n KeyR = 'KeyR',\n KeyF = 'KeyF',\n}\n\nexport interface KeyboardState {\n isPressed: (key: string) => boolean\n isJustPressed: (key: string) => boolean\n isJustReleased: (key: string) => boolean\n getPressedKeys: () => string[]\n clearFrameState: () => void\n dispose: () => void\n}\n\n// Mouse types\nexport enum MouseButton {\n Left = 0,\n Middle = 1,\n Right = 2\n}\n\nexport interface MouseOptions {\n canvas?: HTMLCanvasElement | (() => HTMLCanvasElement | undefined)\n target?: EventTarget\n}\n\nexport interface MouseState {\n x: number | null\n y: number | null\n deltaX: number\n deltaY: number\n wheelDelta: number\n isPressed: (button: MouseButton) => boolean\n isLeftPressed: () => boolean\n isRightPressed: () => boolean\n isMiddlePressed: () => boolean\n clearFrameState: () => void\n dispose: () => void\n}\n\n// Loop types\nexport interface LoopCallbacks {\n fixedFps?: number\n onUpdate?: (delta: number) => void\n onFixedUpdate?: (fixedDelta: number) => void\n onRender?: (alpha: number) => void\n}\n\nexport interface Loop {\n start: () => void\n stop: () => void\n isRunning: () => boolean\n getFps: () => number\n}\n","import { use } from 'flexium/core'\nimport { Keys, type KeyboardState } from './types'\n\nexport { Keys, type KeyboardState }\n\nexport function useKeyboard(target: EventTarget = window): KeyboardState {\n const [pressedKeys, setPressedKeys] = use>(new Set(), { key: ['keyboard', 'pressed'] })\n const [justPressedKeys, setJustPressedKeys] = use>(new Set(), { key: ['keyboard', 'justPressed'] })\n const [justReleasedKeys, setJustReleasedKeys] = use>(new Set(), { key: ['keyboard', 'justReleased'] })\n\n const handleKeyDown = (e: Event) => {\n const key = (e as KeyboardEvent).code\n const currentPressed = pressedKeys as Set\n\n if (!currentPressed.has(key)) {\n const newPressed = new Set(currentPressed)\n newPressed.add(key)\n setPressedKeys(newPressed)\n\n const currentJustPressed = justPressedKeys as Set\n const newJustPressed = new Set(currentJustPressed)\n newJustPressed.add(key)\n setJustPressedKeys(newJustPressed)\n }\n }\n\n const handleKeyUp = (e: Event) => {\n const key = (e as KeyboardEvent).code\n const currentPressed = pressedKeys as Set\n\n const newPressed = new Set(currentPressed)\n newPressed.delete(key)\n setPressedKeys(newPressed)\n\n const currentJustReleased = justReleasedKeys as Set\n const newJustReleased = new Set(currentJustReleased)\n newJustReleased.add(key)\n setJustReleasedKeys(newJustReleased)\n }\n\n target.addEventListener('keydown', handleKeyDown)\n target.addEventListener('keyup', handleKeyUp)\n\n return {\n isPressed: (key: string) => {\n const current = pressedKeys as Set\n return current?.has(key) || false\n },\n\n isJustPressed: (key: string) => {\n const current = justPressedKeys as Set\n return current?.has(key) || false\n },\n\n isJustReleased: (key: string) => {\n const current = justReleasedKeys as Set\n return current?.has(key) || false\n },\n\n getPressedKeys: () => {\n const current = pressedKeys as Set\n return Array.from(current || [])\n },\n\n clearFrameState: () => {\n setJustPressedKeys(new Set())\n setJustReleasedKeys(new Set())\n },\n\n dispose: () => {\n target.removeEventListener('keydown', handleKeyDown)\n target.removeEventListener('keyup', handleKeyUp)\n }\n }\n}\n","import { use } from 'flexium/core'\nimport { MouseButton, type MouseOptions, type MouseState } from './types'\n\nexport { MouseButton, type MouseOptions, type MouseState }\n\nexport function useMouse(options: MouseOptions = {}): MouseState {\n const target = options.target || window\n const canvasGetter = typeof options.canvas === 'function' ? options.canvas : () => options.canvas as HTMLCanvasElement | undefined\n\n const [position, setPosition] = use({ x: 0, y: 0 }, { key: ['mouse', 'position'] })\n const [delta, setDelta] = use({ x: 0, y: 0 }, { key: ['mouse', 'delta'] })\n const [wheelDelta, setWheelDelta] = use(0, { key: ['mouse', 'wheel'] })\n const [buttons, setButtons] = use>(new Set(), { key: ['mouse', 'buttons'] })\n\n let lastX = 0\n let lastY = 0\n\n const handleMouseMove = (e: Event) => {\n const me = e as MouseEvent\n const canvas = canvasGetter()\n\n let x = me.clientX\n let y = me.clientY\n\n // If canvas is provided, calculate position relative to canvas\n if (canvas) {\n const rect = canvas.getBoundingClientRect()\n x = me.clientX - rect.left\n y = me.clientY - rect.top\n }\n\n setPosition({ x, y })\n setDelta({ x: x - lastX, y: y - lastY })\n lastX = x\n lastY = y\n }\n\n const handleMouseDown = (e: Event) => {\n const button = (e as MouseEvent).button\n const currentButtons = buttons as Set\n const newButtons = new Set(currentButtons)\n newButtons.add(button)\n setButtons(newButtons)\n }\n\n const handleMouseUp = (e: Event) => {\n const button = (e as MouseEvent).button\n const currentButtons = buttons as Set\n const newButtons = new Set(currentButtons)\n newButtons.delete(button)\n setButtons(newButtons)\n }\n\n const handleWheel = (e: Event) => {\n const we = e as WheelEvent\n setWheelDelta(we.deltaY)\n }\n\n target.addEventListener('mousemove', handleMouseMove)\n target.addEventListener('mousedown', handleMouseDown)\n target.addEventListener('mouseup', handleMouseUp)\n target.addEventListener('wheel', handleWheel)\n\n const currentButtons = buttons as Set\n const currentPosition = position as { x: number; y: number }\n const currentDelta = delta as { x: number; y: number }\n const currentWheelDelta = wheelDelta as number\n\n return {\n get x() { return currentPosition.x },\n get y() { return currentPosition.y },\n get deltaX() { return currentDelta.x },\n get deltaY() { return currentDelta.y },\n get wheelDelta() { return currentWheelDelta },\n\n isPressed: (button: MouseButton) => currentButtons?.has(button) || false,\n\n isLeftPressed: () => currentButtons?.has(MouseButton.Left) || false,\n\n isRightPressed: () => currentButtons?.has(MouseButton.Right) || false,\n\n isMiddlePressed: () => currentButtons?.has(MouseButton.Middle) || false,\n\n clearFrameState: () => {\n setDelta({ x: 0, y: 0 })\n setWheelDelta(0)\n },\n\n dispose: () => {\n target.removeEventListener('mousemove', handleMouseMove)\n target.removeEventListener('mousedown', handleMouseDown)\n target.removeEventListener('mouseup', handleMouseUp)\n target.removeEventListener('wheel', handleWheel)\n }\n }\n}\n","import type { LoopCallbacks, Loop } from './types'\n\nexport type { LoopCallbacks, Loop }\n\nexport function useLoop(callbacks: LoopCallbacks): Loop {\n const { fixedFps = 60, onUpdate, onFixedUpdate, onRender } = callbacks\n\n const fixedDelta = 1 / fixedFps\n const maxDelta = 0.25 // Cap delta at 250ms to prevent spiral of death\n\n let running = false\n let lastTime = 0\n let accumulator = 0\n let fps = 0\n let frameCount = 0\n let fpsTime = 0\n let rafId: number | null = null\n\n function loop(currentTime: number) {\n if (!running) return\n\n // Calculate delta in seconds\n const delta = Math.min((currentTime - lastTime) / 1000, maxDelta)\n lastTime = currentTime\n\n // Variable timestep update\n if (onUpdate) {\n onUpdate(delta)\n }\n\n // Fixed timestep update\n if (onFixedUpdate) {\n accumulator += delta\n\n while (accumulator >= fixedDelta) {\n onFixedUpdate(fixedDelta)\n accumulator -= fixedDelta\n }\n }\n\n // Render with interpolation alpha\n if (onRender) {\n const alpha = accumulator / fixedDelta\n onRender(alpha)\n }\n\n // FPS calculation\n frameCount++\n if (currentTime - fpsTime >= 1000) {\n fps = frameCount\n frameCount = 0\n fpsTime = currentTime\n }\n\n rafId = requestAnimationFrame(loop)\n }\n\n return {\n start: () => {\n if (running) return\n running = true\n lastTime = performance.now()\n accumulator = 0\n rafId = requestAnimationFrame(loop)\n },\n\n stop: () => {\n running = false\n if (rafId !== null) {\n cancelAnimationFrame(rafId)\n rafId = null\n }\n },\n\n isRunning: () => running,\n\n getFps: () => fps\n }\n}\n"]}