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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| export class Button { | ||
| /** @type {number} */ | ||
| id = 0; | ||
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| /** @type {DOMRect} */ | ||
| rect = null; | ||
| } | ||
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| export class Touch { | ||
| /** @type {string} */ | ||
| type = null; | ||
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| /** @type {number} */ | ||
| id = 0; | ||
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| /** @type {number} */ | ||
| x = 0; | ||
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| /** @type {number} */ | ||
| y = 0; | ||
| } | ||
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| export class InputMessage { | ||
| /** @type {number} */ | ||
| device = 0; | ||
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| /** @type {number} */ | ||
| id = 0; | ||
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| /** @type {number} */ | ||
| value = 0; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| import { Button, InputMessage, Touch } from '../entities/input'; | ||
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| export default class Input { | ||
| /** @type {Touch[]} */ | ||
| #touches = {}; | ||
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| /** @type {boolean} */ | ||
| #pressed = {}; | ||
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| /** | ||
| * @param {DOMRect} rect | ||
| * @param {number} x | ||
| * @param {number} y | ||
| * @returns {number} | ||
| */ | ||
| #distance(rect, x, y) { | ||
| const center_x = rect.left + rect.width / 2; | ||
| const center_y = rect.top + rect.height / 2; | ||
| const dist_x = Math.max(Math.abs(x - center_x) - rect.width / 2, 0); | ||
| const dist_y = Math.max(Math.abs(y - center_y) - rect.height / 2, 0); | ||
| return Math.sqrt(Math.pow(dist_x, 2) + Math.pow(dist_y, 2)); | ||
| } | ||
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| /** | ||
| * @param {Button[]} buttons | ||
| * @param {Touch} touch | ||
| * @returns {InputMessage[]} | ||
| */ | ||
| #click(buttons, touch) { | ||
| const messages = []; | ||
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| const button = buttons.reduce((value, current) => { | ||
| const curr_dist = this.#distance(current.rect, touch.x, touch.y); | ||
| if (!value) | ||
| return curr_dist < 25 ? current : null; | ||
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| const prev_dist = this.#distance(value.rect, touch.x, touch.y); | ||
| if (prev_dist > 25 && curr_dist > 25) | ||
| return null; | ||
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| return curr_dist < prev_dist ? current : value; | ||
| }, null); | ||
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| const prev_touch = this.#touches[touch.identifier]; | ||
| if (prev_touch && prev_touch.id != button?.id) | ||
| messages.push({ device: Input.Device.JOYPAD, id: prev_touch.id, value: false }); | ||
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| const start = !!['mousedown', 'touchstart'].find(type => type == touch.type); | ||
| const move = !!['mousemove', 'touchmove'].find(type => type == touch.type); | ||
| const pressed = start || (move && prev_touch && prev_touch.pressed); | ||
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| if (button?.id) | ||
| messages.push({ device: Input.Device.JOYPAD, id: button.id, value: pressed }); | ||
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| this.#touches[touch.identifier] = { id: button?.id, pressed }; | ||
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| return messages; | ||
| } | ||
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| /** | ||
| * @param {Touch} touch | ||
| * @param {DOMRect} canvas | ||
| * @param {number} width | ||
| * @param {number} height | ||
| * @returns {InputMessage[]} | ||
| */ | ||
| #touch(touch, canvas, width, height) { | ||
| const scaled_x = (touch.x - canvas.left) / (canvas.right - canvas.left) * width; | ||
| const scaled_y = (touch.y - canvas.top ) / (canvas.bottom - canvas.top ) * height; | ||
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| const start = !!['mousedown', 'touchstart'].find(t => t == touch.type); | ||
| const move = !!['mousemove', 'touchmove'].find(t => t == touch.type); | ||
| const pressed = start || (move && this.#pressed); | ||
| this.#pressed = pressed; | ||
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| return [ | ||
| { device: Input.Device.POINTER, id: Input.Pointer.X, value: scaled_x }, | ||
| { device: Input.Device.POINTER, id: Input.Pointer.Y, value: scaled_y }, | ||
| { device: Input.Device.POINTER, id: Input.Pointer.PRESSED, value: pressed }, | ||
| { device: Input.Device.POINTER, id: Input.Pointer.COUNT, value: 1 }, | ||
| ]; | ||
| } | ||
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| /** | ||
| * @param {Button[]} buttons | ||
| * @param {Touch[]} touches | ||
| * @param {boolean} gamepad | ||
| * @param {DOMRect} canvas | ||
| * @param {number} width | ||
| * @param {number} height | ||
| * @returns {InputMessage[]} | ||
| */ | ||
| process(buttons, touches, gamepad, canvas, width, height) { | ||
| if (gamepad) { | ||
| const messages = []; | ||
| for (const touch of touches) | ||
| messages.push(...this.#click(buttons, touch)); | ||
| return messages; | ||
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| } else { | ||
| return this.#touch(touches[0], canvas, width, height); | ||
| } | ||
| } | ||
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| static Device = class { | ||
| static get JOYPAD() { return 1; } | ||
| static get POINTER() { return 6; } | ||
| } | ||
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| static Joypad = class { | ||
| static get B() { return 0; } | ||
| static get Y() { return 1; } | ||
| static get SELECT() { return 2; } | ||
| static get START() { return 3; } | ||
| static get UP() { return 4; } | ||
| static get DOWN() { return 5; } | ||
| static get LEFT() { return 6; } | ||
| static get RIGHT() { return 7; } | ||
| static get A() { return 8; } | ||
| static get X() { return 9; } | ||
| static get L() { return 10; } | ||
| static get R() { return 11; } | ||
| } | ||
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| static Pointer = class { | ||
| static get X() { return 0; } | ||
| static get Y() { return 1; } | ||
| static get PRESSED() { return 2; } | ||
| static get COUNT() { return 3; } | ||
| } | ||
| } |
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