Autobuild a zip for windows with a bundled exe and jre.

build.gradle

@@ -1,5 +1,6 @@
 plugins {
     id 'org.jetbrains.kotlin.jvm' version '1.4.32'
+    id 'edu.sc.seis.launch4j' version '2.5.0'
 }
 
 group 'org.rs09'
@@ -19,4 +20,31 @@ jar {
         attributes 'Main-Class': 'MainWindow'
     }
     from { configurations.compileClasspath.collect { it.isDirectory() ? it : zipTree(it) } }
-}
+}
+
+launch4j {
+    mainClassName = "MainWindow"
+    icon = "${projectDir}/src/main/resources/09logo.ico"
+    jarTask = project.tasks.jar
+    bundledJre64Bit = false
+    bundledJrePath = "jre"
+    downloadUrl = "https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u292-b10/OpenJDK8U-jre_x86-32_windows_hotspot_8u292b10.msi"
+    outfile = "2009scape.exe"
+    copyright = "2009scape"
+    companyName = "2009scape"
+}
+
+task packageExecutableDistribution(type: Zip) {
+    archiveName = "2009scape.zip"
+    destinationDir = file("$buildDir/distExecutable")
+
+    from "$buildDir/launch4j"
+}
+
+task addJreToDistributable(type: Copy) {
+    from files("${projectDir}/launch4j")
+    destinationDir = file("$buildDir/launch4j")
+}
+
+packageExecutableDistribution.dependsOn createExe
+packageExecutableDistribution.dependsOn addJreToDistributable