initial commit - basic cube and lua bindings as well as small gameobject hiarchy system

build.gradle

@@ -0,0 +1,65 @@
+buildscript {
+    ext.kotlinVersion = '1.3.41'
+
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        gradlePluginPortal()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+        google()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
+
+    }
+}
+
+allprojects {
+    apply plugin: "eclipse"
+
+    version = '1.0'
+    ext {
+        appName = "cubes-and-things"
+        gdxVersion = '1.10.0'
+        roboVMVersion = '2.3.12'
+        box2DLightsVersion = '1.5'
+        ashleyVersion = '1.7.3'
+        aiVersion = '1.8.2'
+        gdxControllersVersion = '2.1.0'
+    }
+
+    repositories {
+        mavenLocal()
+        mavenCentral()
+        google()
+        gradlePluginPortal()
+        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
+        maven { url "https://oss.sonatype.org/content/repositories/releases/" }
+        maven { url 'https://jitpack.io' }
+    }
+}
+
+project(":desktop") {
+    apply plugin: "kotlin"
+
+
+    dependencies {
+        implementation project(":core")
+        api "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
+        api "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
+        api "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
+        api "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
+    }
+}
+
+project(":core") {
+    apply plugin: "kotlin"
+
+
+    dependencies {
+        api "com.badlogicgames.gdx:gdx:$gdxVersion"
+        api "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
+        api "org.jetbrains.kotlin:kotlin-stdlib:$kotlinVersion"
+        compile 'com.github.apsun:luabridge:master-SNAPSHOT'
+    }
+}

core/assets/scripts/Init.lua

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+local world = root:find("World")
+world:createCube()

core/build.gradle

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+sourceCompatibility = 1.7
+[compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
+
+sourceSets.main.java.srcDirs = [ "src/" ]
+
+eclipse.project.name = appName + "-core"

core/src/com/mygdx/game/Component.kt

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+package com.mygdx.game
+
+import com.crossbowffs.luabridge.ExposedJavaClass
+import com.crossbowffs.luabridge.ExposeToLua
+
+open class Component : ExposedJavaClass() {
+    val children: ArrayList<Component> = ArrayList()
+
+    open var name: String = "Component"
+    open var componentType: String = "Component"
+
+    @ExposeToLua
+    fun find(name: String): Component? {
+        return children.firstOrNull { it.name == name }
+    }
+
+    @ExposeToLua
+    fun add(comp: Component) {
+        children.add(comp)
+        comp.create()
+    }
+
+    @ExposeToLua
+    fun nameGet(): String {
+        return name
+    }
+
+    @ExposeToLua
+    fun nameSet(newValue: String) {
+        name = newValue
+    }
+
+    @ExposeToLua
+    fun typeGet(): String {
+        return componentType
+    }
+
+    open fun create() {}
+}

core/src/com/mygdx/game/Cube.kt

@@ -0,0 +1,13 @@
+package com.mygdx.game
+
+import com.badlogic.gdx.graphics.g3d.ModelInstance
+
+class Cube(modelInstance: ModelInstance) : Component() {
+    override var name: String = "Cube"
+    override var componentType: String = "Cube"
+    var modelInstance: ModelInstance = modelInstance
+
+    override fun create() {
+        println("+ cube")
+    }
+}

core/src/com/mygdx/game/CubesAndThings.kt

@@ -0,0 +1,65 @@
+package com.mygdx.game
+
+import com.badlogic.gdx.ApplicationAdapter
+import com.badlogic.gdx.Gdx
+import com.badlogic.gdx.graphics.GL20
+import com.badlogic.gdx.graphics.PerspectiveCamera
+import com.badlogic.gdx.graphics.g3d.Environment
+import com.badlogic.gdx.graphics.g3d.ModelBatch
+import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute
+import com.badlogic.gdx.graphics.g3d.environment.DirectionalLight
+import com.badlogic.gdx.graphics.g3d.utils.CameraInputController
+import org.luaj.vm2.lib.jse.JsePlatform
+
+
+class CubesAndThings : ApplicationAdapter() {
+    private lateinit var rootComponent: Root
+    private lateinit var worldComponent: World
+
+    private lateinit var camera: PerspectiveCamera
+    private lateinit var cameraController: CameraInputController
+    private lateinit var environment: Environment
+
+    private lateinit var modelBatch: ModelBatch
+
+    override fun create() {
+        rootComponent = Root()
+        rootComponent.create()
+        worldComponent = rootComponent.find("World") as World
+
+        val globals = JsePlatform.standardGlobals()
+        globals.set("root", rootComponent)
+        val chunk = globals.loadfile("scripts/Init.lua")
+        chunk.call()
+
+        camera = PerspectiveCamera(67f, Gdx.graphics.width.toFloat(), Gdx.graphics.height.toFloat())
+        camera.position.set(10f, 10f, 10f)
+        camera.lookAt(0f, 0f, 0f)
+        camera.near = 1f
+        camera.far = 300f
+        camera.update()
+
+        cameraController = CameraInputController(camera)
+        modelBatch = ModelBatch()
+
+        Gdx.input.inputProcessor = cameraController
+
+        environment = Environment()
+        environment.set(ColorAttribute(ColorAttribute.AmbientLight, 0.4f, 0.4f, 0.4f, 1f))
+        environment.add(DirectionalLight().set(0.8f, 0.8f, 0.8f, -1f, -0.8f, -0.2f))
+    }
+
+    override fun render() {
+        cameraController.update()
+        Gdx.gl.glViewport(0, 0, Gdx.graphics.width, Gdx.graphics.height)
+        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT or GL20.GL_DEPTH_BUFFER_BIT)
+
+        modelBatch.begin(camera)
+        worldComponent.doBatch(modelBatch, environment)
+        modelBatch.end()
+    }
+
+    override fun dispose() {
+        modelBatch.dispose()
+    }
+}

core/src/com/mygdx/game/Root.kt

@@ -0,0 +1,11 @@
+package com.mygdx.game
+
+class Root : Component() {
+    override var name: String = "Root"
+    override var componentType: String = "Root"
+    private val worldComponent: World = World()
+
+    override fun create() {
+        add(worldComponent)
+    }
+}

core/src/com/mygdx/game/World.kt

@@ -0,0 +1,35 @@
+package com.mygdx.game
+
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.VertexAttributes
+import com.badlogic.gdx.graphics.g3d.*
+import com.badlogic.gdx.graphics.g3d.attributes.ColorAttribute
+import com.badlogic.gdx.graphics.g3d.utils.ModelBuilder
+import com.crossbowffs.luabridge.ExposeToLua
+
+class World : Component() {
+    override var name: String = "World"
+    override var componentType: String = "World"
+
+    private val modelBuilder: ModelBuilder = ModelBuilder()
+
+    @ExposeToLua
+    fun createCube(): Cube {
+        val newCube = Cube(ModelInstance(modelBuilder.createBox(
+            5f, 5f, 5f,
+            Material(ColorAttribute.createDiffuse(Color.GREEN)),
+            (VertexAttributes.Usage.Position or VertexAttributes.Usage.Normal).toLong()
+        )))
+        add(newCube)
+        return newCube
+    }
+
+    fun doBatch(batch: ModelBatch, env: Environment) {
+        children.forEach {
+            if (it.componentType == "Cube") {
+                val cube: Cube = it as Cube
+                batch.render(cube.modelInstance, env)
+            }
+        }
+    }
+}

desktop/build.gradle

@@ -0,0 +1,39 @@
+sourceCompatibility = 1.7
+sourceSets.main.java.srcDirs = [ "src/" ]
+sourceSets.main.resources.srcDirs = ["../core/assets"]
+
+project.ext.mainClassName = "com.mygdx.game.desktop.DesktopLauncher"
+project.ext.assetsDir = new File("../core/assets")
+
+task run(dependsOn: classes, type: JavaExec) {
+    main = project.mainClassName
+    classpath = sourceSets.main.runtimeClasspath
+    standardInput = System.in
+    workingDir = project.assetsDir
+    ignoreExitValue = true
+}
+
+task debug(dependsOn: classes, type: JavaExec) {
+    main = project.mainClassName
+    classpath = sourceSets.main.runtimeClasspath
+    standardInput = System.in
+    workingDir = project.assetsDir
+    ignoreExitValue = true
+    debug = true
+}
+
+task dist(type: Jar) {
+    manifest {
+        attributes 'Main-Class': project.mainClassName
+    }
+    dependsOn configurations.runtimeClasspath
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+    with jar
+}
+
+
+dist.dependsOn classes
+
+eclipse.project.name = appName + "-desktop"

desktop/src/com/mygdx/game/desktop/DesktopLauncher.kt

@@ -0,0 +1,14 @@
+package com.mygdx.game.desktop
+
+import kotlin.jvm.JvmStatic
+import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration
+import com.badlogic.gdx.backends.lwjgl.LwjglApplication
+import com.mygdx.game.CubesAndThings
+
+object DesktopLauncher {
+    @JvmStatic
+    fun main(arg: Array<String>) {
+        val config = LwjglApplicationConfiguration()
+        LwjglApplication(CubesAndThings(), config)
+    }
+}

gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.daemon=true
+org.gradle.jvmargs=-Xms128m -Xmx1500m
+org.gradle.configureondemand=false

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1 @@
+include 'desktop', 'core'