Game events :3

.gitignore

@@ -46,4 +46,6 @@ gradle-app.setting
 .vscode/settings.json
 bin/
 eclipse-formatter.xml
-/.vscode/
+/.vscode/
+
+.kotlin

src/main/kotlin/gay/j10a1n15/sillygames/games/Game.kt

@@ -4,4 +4,8 @@ import gg.essential.elementa.UIComponent
 
 abstract class Game {
     abstract fun getDisplay(): UIComponent
+
+    open fun onTick() {}
+
+    open fun onKeyClick(key: Int) {}
 }

src/main/kotlin/gay/j10a1n15/sillygames/games/GameEventManager.kt

@@ -0,0 +1,17 @@
+package gay.j10a1n15.sillygames.games
+
+import gay.j10a1n15.sillygames.events.Events
+
+object GameEventManager {
+
+    private var game: Game? = null
+
+    init {
+        Events.TICK.register { game?.onTick() }
+        Events.KEYBOARD.register { game?.onKeyClick(it) }
+    }
+
+    fun setGame(game: Game?) {
+        this.game = game
+    }
+}

src/main/kotlin/gay/j10a1n15/sillygames/games/Snake.kt

@@ -1,6 +1,5 @@
 package gay.j10a1n15.sillygames.games
 
-import gay.j10a1n15.sillygames.events.Events
 import gay.j10a1n15.sillygames.utils.Vector2d
 import gg.essential.elementa.UIComponent
 import gg.essential.elementa.components.UIBlock
@@ -17,11 +16,6 @@ import java.awt.Color
 
 class Snake : Game() {
 
-    init {
-        Events.TICK.register { onTick() }
-        Events.KEYBOARD.register { onKeyClick(it) }
-    }
-
     private val gridSize = 20
     private val gridWidth = 30
     private val gridHeight = 20
@@ -35,7 +29,7 @@ class Snake : Game() {
     private val gameSpeed = 200L
     private var lastUpdateTime = System.currentTimeMillis()
 
-    private fun onTick() {
+    override fun onTick() {
         if (gameOver.get()) return
         if (snake.isEmpty()) return
 
@@ -59,7 +53,7 @@ class Snake : Game() {
         }.toMutableList()
     }
 
-    private fun onKeyClick(key: Int) {
+    override fun onKeyClick(key: Int) {
         if (gameOver.get()) return
 
         val newDirection = when (key) {

src/main/kotlin/gay/j10a1n15/sillygames/screens/FullScreen.kt

@@ -1,6 +1,7 @@
 package gay.j10a1n15.sillygames.screens
 
 import gay.j10a1n15.sillygames.games.Game
+import gay.j10a1n15.sillygames.games.GameEventManager
 import gg.essential.elementa.ElementaVersion
 import gg.essential.elementa.WindowScreen
 import gg.essential.elementa.components.UIBlock
@@ -13,6 +14,11 @@ import gg.essential.elementa.utils.invisible
 import java.awt.Color
 
 class FullScreen(private val element: Game) : WindowScreen(ElementaVersion.V5) {
+
+    init {
+        GameEventManager.setGame(element)
+    }
+
     private val container = UIBlock().constrain {
         x = CenterConstraint()
         y = CenterConstraint()
@@ -37,5 +43,10 @@ class FullScreen(private val element: Game) : WindowScreen(ElementaVersion.V5) {
             height = 100.percent
         } childOf container
     }
+
+    override fun onScreenClose() {
+        super.onScreenClose()
+        GameEventManager.setGame(null)
+    }
 }
 

src/main/kotlin/gay/j10a1n15/sillygames/screens/PictureInPicture.kt

@@ -2,6 +2,7 @@ package gay.j10a1n15.sillygames.screens
 
 import gay.j10a1n15.sillygames.events.Events
 import gay.j10a1n15.sillygames.games.Game
+import gay.j10a1n15.sillygames.games.GameEventManager
 import gay.j10a1n15.sillygames.games.Snake
 import gg.essential.elementa.ElementaVersion
 import gg.essential.elementa.WindowScreen
@@ -21,7 +22,15 @@ object PictureInPicture : WindowScreen(ElementaVersion.V5) {
     }
 
     var game: Game? = Snake()
+        set(value) {
+            field = value
+            updateEventListeners()
+        }
     var visible = false
+        set(value) {
+            field = value
+            updateEventListeners()
+        }
 
     private fun onRender(matrix: UMatrixStack) {
         if (!visible) return
@@ -40,4 +49,8 @@ object PictureInPicture : WindowScreen(ElementaVersion.V5) {
 
         window.draw(matrix)
     }
+
+    private fun updateEventListeners() {
+        GameEventManager.setGame(if (visible) game else null)
+    }
 }