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/*
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* FXGL - JavaFX Game Library. The MIT License (MIT).
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* Copyright (c) AlmasB (almaslvl@gmail.com).
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* See LICENSE for details.
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*/
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package com.almasb.fxgl.dsl.components
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import com.almasb.fxgl.entity.component.Component
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import com.almasb.fxgl.logging.Logger
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import javafx.beans.property.ReadOnlyBooleanProperty
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import javafx.beans.property.ReadOnlyBooleanWrapper
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import javafx.geometry.Point2D
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/**
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* This component moves the entity using provided Point2D waypoints.
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*
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* @author Almas Baimagambetov (almaslvl@gmail.com)
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*/
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class WaypointMoveComponent(
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var speed: Double,
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waypoints: List<Point2D>) : Component() {
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private val log = Logger.get<WaypointMoveComponent>()
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private var points: MutableList<Point2D> = arrayListOf()
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private var nextPoint: Point2D = Point2D.ZERO
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private val isAtDestinationProp = ReadOnlyBooleanWrapper(true)
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init {
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move(waypoints)
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}
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fun atDestinationProperty(): ReadOnlyBooleanProperty = isAtDestinationProp.readOnlyProperty
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fun move(waypoints: List<Point2D>) {
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points.clear()
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points.addAll(waypoints)
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if (points.isEmpty()) {
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log.warning("No waypoints given. Using Point2D.ZERO as dummy")
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points.add(Point2D.ZERO)
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}
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nextPoint = points.removeAt(0)
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isAtDestinationProp.value = false
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}
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override fun onUpdate(tpf: Double) {
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if (isAtDestinationProp.value)
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return
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val dist = tpf * speed
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if (nextPoint.distance(entity.anchoredPosition) < dist) {
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entity.anchoredPosition = nextPoint
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if (points.isNotEmpty()) {
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nextPoint = points.removeAt(0)
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} else {
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isAtDestinationProp.value = true
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}
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} else {
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entity.translateTowards(nextPoint, dist)
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}
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}
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override fun isComponentInjectionRequired(): Boolean = false
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}
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