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import { IInputReceiver } from "../inputReceiver.js";
import { IBounds2, Bounds2 } from "../../../models/bounds2.js";
import { EventMouse } from "../events/eventMouse.js";
import { EventTouch } from "../events/eventTouch.js";
import { IEntityInput } from "../../../components/entities/entityInput.js";
import { IEngineCore } from "../../../engineCore.js";
import { IEntity } from "../../../components/entities/entity.js";
import { IInputType, InputType } from "./inputType.js";
import { IEngineCanvas } from "../../../engineCanvas.js";
export interface IInputTypePointer extends IInputType, IRefreshable, IDestroyable {
setStyle(cursor: string): void;
}
export class InputTypePointer extends InputType implements IInputTypePointer {
private readonly _engineCanvas: IEngineCanvas;
private readonly _mouseDown: (e: Event) => void;
private readonly _mouseUp: (e: Event) => void;
private readonly _mouseMove: (e: Event) => void;
private readonly _mouseLeave: (e: Event) => void;
private readonly _touchStart: (e: Event) => void;
private readonly _touchMove: (e: Event) => void;
private readonly _touchEnd: (e: Event) => void;
private _hoveredEntity: IEntityInput | null;
private _pressedEntity: IEntityInput | null;
private _pointerPostion: IBounds2;
public constructor(engineCanvas: IEngineCanvas) {
super();
this._hoveredEntity = null;
this._pressedEntity = null;
this._pointerPostion = new Bounds2();
this._engineCanvas = engineCanvas;
this._mouseDown = (e: Event): void => this.onPointerDown(<EventMouse>e);
this._mouseUp = (e: Event): void => this.onPointerUp(<EventMouse>e);
this._mouseMove = (e: Event): void => this.onPointerMove(<EventMouse>e);
this._mouseLeave = (e: Event): void => this.onPointerLeave(<EventMouse>e);
this._touchStart = (e: Event): void => this.onTouchStart(<EventTouch>e);
this._touchMove = (e: Event): void => this.onTouchMove(<EventTouch>e);
this._touchEnd = (e: Event): void => this.onTouchEnd(<EventTouch>e);
}
public override initialize(engineCore: IEngineCore, inputReceiver: IInputReceiver): void {
super.initialize(engineCore, inputReceiver);
this.inputReceiver.addEventListener("mousedown", this._mouseDown);
this.inputReceiver.addEventListener("mouseup", this._mouseUp);
this.inputReceiver.addEventListener("mousemove", this._mouseMove);
this.inputReceiver.addEventListener("mouseleave", this._mouseLeave);
this.inputReceiver.addEventListener("touchstart", this._touchStart);
this.inputReceiver.addEventListener("touchmove", this._touchMove);
this.inputReceiver.addEventListener("touchcancel", this._touchEnd);
this.inputReceiver.addEventListener("touchend", this._touchEnd);
}
public destroy(): void {
this.inputReceiver.removeEventListener("mousedown", this._mouseDown);
this.inputReceiver.removeEventListener("mouseup", this._mouseUp);
this.inputReceiver.removeEventListener("mousemove", this._mouseMove);
this.inputReceiver.removeEventListener("mouseleave", this._mouseLeave);
this.inputReceiver.removeEventListener("touchstart", this._touchStart);
this.inputReceiver.removeEventListener("touchmove", this._touchMove);
this.inputReceiver.removeEventListener("touchcancel", this._touchEnd);
this.inputReceiver.removeEventListener("touchend", this._touchEnd);
}
public setStyle(cursor: string): void {
const element = this._engineCanvas;
if (cursor !== "default") {
element.style.cursor = cursor;
return;
}
element.style.removeProperty("cursor");
if (!element.getAttribute("style")) {
element.removeAttribute("style");
}
}
public refresh(): void {
this.onPointerUpdate(this._pointerPostion);
}
private onPointerDown(event: EventMouse): void {
this.pressed(this._hoveredEntity, event.position);
}
private onPointerUp(event: EventMouse): void {
this.tapped(this._hoveredEntity, event.position);
}
private onPointerMove(event: EventMouse): void {
this.onPointerUpdate(event.position);
}
private onPointerLeave(event: EventMouse): void {
this.onPointerExit(event.position);
}
private onTouchStart(event: EventTouch): void {
event.positions.forEach(position => {
if (this.onPointerUpdate(position)) {
this.pressed(this._hoveredEntity, position, true);
this._hoveredEntity?.touchStart(event.positions);
}
});
}
private onTouchMove(event: EventTouch): void {
event.positions.forEach(position => {
this.onPointerUpdate(position);
});
}
private onTouchEnd(event: EventTouch): void {
event.positions.forEach(position => this.tapped(this._hoveredEntity, position));
this.removeHoveredEntity(this._hoveredEntity, this._pointerPostion);
}
private onPointerUpdate(position: IBounds2): boolean {
let isEntityHovered = false;
this._pointerPostion = position;
let scenes = this.engineCore.children;
scenes = [...scenes].reverse();
for (const scene of scenes) {
if (!scene.isVisible || !scene.isEnabled)
continue;
this.moveEnitities(scene.children, position);
if (this.updateEntities(scene.children, isEntityHovered, position)) {
isEntityHovered = true;
}
}
if (!isEntityHovered) {
this.removeHoveredEntity(this._hoveredEntity, position);
}
return isEntityHovered;
}
private moveEnitities(collection: ReadonlyArray<IEntity>, position: IBounds2): void {
collection.forEach(entity => {
const inputEntity = entity as IEntityInput;
const receivePointerInput = inputEntity?.receivePointerInput ?? false;
Eif (receivePointerInput) {
this.move(inputEntity, position);
}
this.moveEnitities(entity.children, position);
});
}
private updateEntities(collection: ReadonlyArray<IEntity>, isEntityHovered: boolean, position: IBounds2): boolean {
const entities = [...collection].reverse();
for (const entity of entities) {
if (this.updateEntity(entity, isEntityHovered, position)) {
isEntityHovered = true;
}
}
return isEntityHovered;
}
private updateEntity(entity: IEntity, isEntityHovered: boolean, position: IBounds2): boolean {
const inputEntity = entity as IEntityInput;
const receivePointerInput = inputEntity?.receivePointerInput ?? false;
if (this.isHovered(entity, position)) {
Eif (!isEntityHovered) {
return this.addHoveredEntity(entity, isEntityHovered, position);
}
}
else if (receivePointerInput && inputEntity.isHovered) {
if (!inputEntity.isHitTestVisible) {
this.leave(inputEntity, position);
}
}
return false;
}
private addHoveredEntity(entity: IEntity, isEntityHovered: boolean, position: IBounds2): boolean {
let isHovered = this.updateEntities(entity.children, isEntityHovered, position);
if (isHovered) {
return isHovered;
}
const inputEntity = entity as IEntityInput;
const receivePointerInput = inputEntity?.receivePointerInput ?? false;
const isHoveredPressed = this._hoveredEntity?.isPointerPressed ?? false;
Eif (receivePointerInput && !isHovered) {
Eif (inputEntity.isHitTestVisible && !isHoveredPressed) {
if (inputEntity !== this._hoveredEntity) {
this.removeHoveredEntity(this._hoveredEntity, position);
this.setPointerStyle(inputEntity, true);
this._hoveredEntity = inputEntity;
}
isHovered = true;
}
inputEntity.isHovered = true;
this.hover(inputEntity, true, isHoveredPressed, position);
}
return isHovered;
}
private removeHoveredEntity(inputEntity: IEntityInput | null, position: IBounds2): void {
if (!inputEntity?.isPointerEntered || (inputEntity.isEnabled && inputEntity.isPointerPressed))
return;
inputEntity.isHovered = false;
this.setPointerStyle(inputEntity, false);
this.hover(inputEntity, false, false, position);
this._hoveredEntity = null;
}
private onPointerExit(position: IBounds2): void {
const scenes = this.engineCore.children;
scenes.forEach(scene => this.exitEntities(scene.children, position));
}
private exitEntities(collection: ReadonlyArray<IEntity>, position: IBounds2): void {
collection.forEach(entity => {
const inputEntity = entity as IEntityInput;
const receivePointerInput = inputEntity?.receivePointerInput ?? false;
this.exitEntities(inputEntity.children, position);
Eif (receivePointerInput && inputEntity.isHovered) {
this.leave(inputEntity, position);
}
});
}
private hover(inputEntity: IEntityInput | null, isHovered: boolean, isHoveredPressed: boolean, position: IBounds2): void {
if (!inputEntity)
return;
if (isHovered || inputEntity.isPointerPressed) {
if (!inputEntity.isPointerEntered && !isHoveredPressed) {
inputEntity.isPointerEntered = true;
inputEntity.pointerEnter(position);
}
inputEntity.pointerHover(position);
return;
}
if (!inputEntity.isPointerEntered)
return;
inputEntity.isPointerEntered = false;
inputEntity.pointerLeave(position);
}
private move(inputEntity: IEntityInput | null, position: IBounds2): void {
if (!inputEntity)
return;
if (!inputEntity.isEnabled || !inputEntity.isPointerPressed)
return;
inputEntity.pointerMove(position);
}
private pressed(inputEntity: IEntityInput | null, position: IBounds2, isTouch: boolean = false): void {
if (!inputEntity)
return;
const active = this.isHovered(inputEntity, position);
const checkTouchHitBox = isTouch && inputEntity.isTouchHitBoxDisabled;
if (!inputEntity.isEnabled || (!checkTouchHitBox && !active))
return;
this._pressedEntity = inputEntity;
this._pressedEntity.isPointerPressed = true;
this._pressedEntity.pointerPressed(position);
}
private tapped(inputEntity: IEntityInput | null, position: IBounds2): void {
if (!inputEntity) {
if (!this._pressedEntity)
return;
inputEntity = this._pressedEntity;
}
const active = this.isHovered(inputEntity, position);
const pressed = inputEntity.isPointerPressed;
if (active || pressed) {
inputEntity.pointerTapped(position);
}
inputEntity.isPointerPressed = false;
inputEntity.pointerReleased(position);
this.removeHoveredEntity(inputEntity, position);
if (active) {
this.onPointerUpdate(this._pointerPostion);
}
}
private leave(inputEntity: IEntityInput | null, position: IBounds2): void {
if (!inputEntity)
return;
inputEntity.isPointerPressed = false;
this.removeHoveredEntity(inputEntity, position);
}
private isHovered(entity: IEntity | null, position: IBounds2): boolean {
if (!entity)
return false;
return entity.isEnabled && entity.hitTest(position);
}
private setPointerStyle(entity: IEntityInput | null, isHovered: boolean): void {
if (!entity?.isHitTestVisible || (entity.isEnabled && entity.isPointerPressed))
return;
this.setStyle(isHovered && entity.isEnabled ? "pointer" : "default");
}
} |