+25
-19
lines changedFilter options
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-19
lines changed Original file line number Diff line number Diff line change
@@ -6,53 +6,46 @@
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package com.almasb.fxgl.dsl.components
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import com.almasb.fxgl.app.scene.Viewport
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import com.almasb.fxgl.dsl.FXGL
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import com.almasb.fxgl.entity.component.Component
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import javafx.geometry.Rectangle2D
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/**
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* A component that keeps an entity within the viewport.
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* Entities with physics enabled are not supported.
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* Do NOT use this component if viewport is bound to an entity.
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*
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* @author Almas Baimagambetov (almaslvl@gmail.com)
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*/
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class KeepOnScreenComponent : Component() {
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private lateinit var viewport: Viewport
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open class KeepInBoundsComponent(var bounds: Rectangle2D) : Component() {
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/**
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* keep on screen in X axis.
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* Keep in bounds in X axis.
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*/
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var isHorizontal = true
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/**
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* keep on screen in Y axis.
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* Keep in bounds in Y axis.
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*/
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var isVertical = true
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override fun onAdded() {
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viewport = FXGL.getGameScene().viewport
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}
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override fun onUpdate(tpf: Double) {
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blockWithBBox()
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}
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private fun blockWithBBox() {
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if (isHorizontal) {
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if (getEntity().x < viewport.x) {
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getEntity().x = viewport.x
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} else if (getEntity().rightX > viewport.x + viewport.width) {
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getEntity().x = viewport.x + viewport.width - getEntity().width
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if (getEntity().x < bounds.minX) {
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getEntity().x = bounds.minX
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} else if (getEntity().rightX > bounds.maxX) {
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getEntity().x = bounds.maxX - getEntity().width
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}
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}
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if (isVertical) {
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if (getEntity().y < viewport.y) {
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getEntity().y = viewport.y
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} else if (getEntity().bottomY > viewport.y + viewport.height) {
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getEntity().y = viewport.y + viewport.height - getEntity().height
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if (getEntity().y < bounds.minY) {
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getEntity().y = bounds.minY
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} else if (getEntity().bottomY > bounds.maxY) {
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getEntity().y = bounds.maxY - getEntity().height
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}
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}
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}
@@ -73,4 +66,17 @@ class KeepOnScreenComponent : Component() {
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}
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override fun isComponentInjectionRequired(): Boolean = false
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}
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/**
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* A component that keeps an entity within the viewport.
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* Entities with physics enabled are not supported.
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* Do NOT use this component if viewport is bound to an entity.
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*/
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class KeepOnScreenComponent : KeepInBoundsComponent(Rectangle2D.EMPTY) {
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override fun onUpdate(tpf: Double) {
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bounds = FXGL.getGameScene().viewport.visibleArea
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super.onUpdate(tpf)
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}
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}
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