Some cleanups

sample-minesweeper/src/commonMain/kotlin/com/soywiz/korge/samples/minesweeper/Board.kt

@@ -11,7 +11,7 @@ import com.soywiz.korma.random.*
 import kotlin.random.*
 
 // Proceso que se encarga del tablero
-class Board(
+open class Board(
 	parent: Container,
 	val imageset: BmpSlice,
 	val imagenes: List<BmpSlice>,
@@ -66,7 +66,7 @@ class Board(
 	}
 
 	// Destructor, aquí se quita el texto cuando se borra el tablero
-	override fun onDestroy() {
+	override protected fun onDestroy() {
 		timeText.removeFromParent()
 	}
 

sample-minesweeper/src/commonMain/kotlin/com/soywiz/korge/samples/minesweeper/Process.kt

@@ -22,19 +22,13 @@ abstract class Process(parent: Container) : Container() {
 
 	override val stage: Stage get() = super.stage!!
 	val views: Views get() = stage.views
-	val type: KClass<out View> get() = this::class
 	var fps: Double = 60.0
 
 	val key get() = stage.views.key
-
 	val Mouse get() = views.mouseV
 	val Screen get() = views.screenV
 	val audio get() = views.audioV
 
-	var angle: Double
-		get() = rotationDegrees
-		set(value) = run { rotationDegrees = value }
-
 	suspend fun frame() {
 		//delayFrame()
 		delay((1.0 / fps).seconds)
@@ -46,30 +40,19 @@ abstract class Process(parent: Container) : Container() {
 
 	abstract suspend fun main()
 
-	private lateinit var job: Job
-
-	fun destroy() {
-		removeFromParent()
-	}
-
-	open fun onDestroy() {
-	}
-
-	class ChangeActionException(val action: KSuspendFunction0<Unit>) : Exception()
-
-	init {
-		job = views.launchAsap {
-			var action = ::main
-			while (true) {
-				try {
-					action()
-					break
-				} catch (e: ChangeActionException) {
-					action = e.action
-				}
+	private val job: Job = views.launchAsap {
+		var action = ::main
+		while (true) {
+			try {
+				action()
+				break
+			} catch (e: ChangeActionException) {
+				action = e.action
 			}
 		}
+	}
 
+	init {
 		addComponent(object : StageComponent {
 			override val view: View = this@Process
 
@@ -85,12 +68,34 @@ abstract class Process(parent: Container) : Container() {
 		})
 	}
 
-	fun collision(type: KClass<out View>): Boolean {
-		return false
+	fun destroy() {
+		removeFromParent()
 	}
+
+	protected open fun onDestroy() {
+	}
+
+	class ChangeActionException(val action: KSuspendFunction0<Unit>) : Exception()
+
+	inline fun <reified T : View> collision(): T? = views.stage.findCollision<T>(this)
+	fun collision(matcher: (View) -> Boolean): View? = views.stage.findCollision(this, matcher)
 }
 
 
+inline fun <reified T : View> Container.findCollision(subject: View): T? = findCollision(subject) { it is T && it != subject } as T?
+
+fun Container.findCollision(subject: View, matcher: (View) -> Boolean): View? {
+	var collides: View? = null
+	this.foreachDescendant {
+		if (matcher(it)) {
+			if (subject.collidesWith(it)) {
+				collides = it
+			}
+		}
+	}
+	return collides
+}
+
 /**
  * Component with [added] and [removed] methods that are executed
  * once the view is going to be displayed, and when the view has been removed

sample-minesweeper/src/commonMain/kotlin/com/soywiz/korge/samples/minesweeper/RandomLight.kt

@@ -37,17 +37,17 @@ class RandomLight(
 		alpha = 0.1
 
 		while (true) {
-			angle += inca
-			x = w2 - cos(angle) * w2 * excx + sx
-			y = h2 - sin(angle) * h2 * excy + sy
-			scale = 1 + (cos(angle) / 6) * incs
+			rotationDegrees += inca
+			x = w2 - cos(rotationDegrees) * w2 * excx + sx
+			y = h2 - sin(rotationDegrees) * h2 * excy + sy
+			scale = 1 + (cos(rotationDegrees) / 6) * incs
 
 			// Comprueba si una esfera de luz ha chocado con otra
 			// El sistema de colisión por defecto es inner circle
-			if (this.collision(this.type)) {
-				if (alpha <= 0.8) alpha += 0.01
+			if (this.collision<RandomLight>() != null) {
+				alpha = (alpha + 0.01).coerceIn(0.1, 0.8)
 			} else {
-				if (alpha >= 0.1) alpha -= 0.01
+				alpha = (alpha - 0.05).coerceIn(0.1, 0.8)
 			}
 
 			frame()