build.clj

@@ -21,16 +21,16 @@
                :target-dir class-dir})
   (b/jar {:class-dir class-dir
           :jar-file jar-file
-          :main 'ois.core}))
+          :main 'ois.launcher}))
 
 (defn uber [_]
   (clean nil)
   (b/copy-dir {:src-dirs ["src" "resources"]
                :target-dir class-dir})
   (b/compile-clj {:basis basis
-                  :ns-compile '[ois.core]
+                  :ns-compile '[ois.launcher]
                   :class-dir class-dir})
   (b/uber {:class-dir class-dir
            :uber-file uber-file
            :basis basis
-           :main 'ois.core}))
+           :main 'ois.launcher}))

deps.edn

@@ -1,12 +1,15 @@
 {
  :paths ["src"]
  :deps {
-        org.clojure/clojure { :mvn/version "1.11.1" }
-        metosin/malli { :mvn/version "0.13.0" }
-        org.lwjgl/lwjgl { :mvn/version "3.3.3" }
-        org.lwjgl/lwjgl-glfw { :mvn/version "3.3.3" }
-        org.lwjgl/lwjgl-opengl { :mvn/version "3.3.3" }
-        nrepl/nrepl { :mvn/version "0.4.0" }
+        com.badlogicgames.gdx/gdx { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-backend-lwjgl { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-box2d { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-box2d-platform$natives-desktop { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-bullet { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-bullet-platform$natives-desktop { :mvn/version "1.11.0" }
+        com.badlogicgames.gdx/gdx-platform$natives-desktop { :mvn/version "1.11.0" }
+        org.clojure/clojure { :mvn/version "1.7.0" }
+        play-clj/play-clj { :mvn/version "1.1.1" }
         }
  :aliases {
            :build {

src/ois/core.clj

@@ -1,81 +1,33 @@
 (ns ois.core
-  (:gen-class)
-  (:import (org.lwjgl Version)
-           (org.lwjgl.glfw GLFWErrorCallback GLFW GLFWKeyCallbackI Callbacks)
-           (org.lwjgl.opengl GL GL33)
-           (org.lwjgl.system MemoryStack)
-           (java.lang IllegalStateException)))
+  (:import [com.badlogic.gdx Game Gdx Graphics Screen]
+           [com.badlogic.gdx.graphics Color GL20]
+           [com.badlogic.gdx.graphics.g2d BitmapFont]
+           [com.badlogic.gdx.scenes.scene2d Stage]
+           [com.badlogic.gdx.scenes.scene2d.ui Label Label$LabelStyle]))
 
-(require '[nrepl.server :refer [start-server stop-server]])
-(defonce server (start-server :port 7888))
+(gen-class
+  :name ois.core.Game
+  :extends com.badlogic.gdx.Game)
 
-(declare window)
+(def main-screen
+  (let [stage (atom nil)]
+    (proxy [Screen] []
+      (show []
+        (reset! stage (Stage.))
+        (let [style (Label$LabelStyle. (BitmapFont.) (Color. 0 1 0 1))
+              label (Label. "Hello world!" style)]
+          (.addActor @stage label)))
+      (render [delta]
+        (.glClearColor (Gdx/gl) 0 0 0 0)
+        (.glClear (Gdx/gl) GL20/GL_COLOR_BUFFER_BIT)
+        (doto @stage
+          (.act delta)
+          (.draw)))
+      (dispose[])
+      (hide [])
+      (pause [])
+      (resize [w h])
+      (resume []))))
 
-(declare init main-loop draw)
-
-(defn -main [& args]
-  (println (str "Hello LWJGL " (Version/getVersion) "!"))
-
-  (init)
-  (main-loop)
-
-  (Callbacks/glfwFreeCallbacks window)
-  (GLFW/glfwDestroyWindow window)
-
-  (GLFW/glfwTerminate)
-  (-> (GLFW/glfwSetErrorCallback nil) (.free)))
-
-(defn init []
-  (-> (GLFWErrorCallback/createPrint System/err) (.set))
-  (when (not (GLFW/glfwInit))
-    (throw (IllegalStateException. "Failed to initialized GLFW.")))
-
-  (GLFW/glfwDefaultWindowHints)
-  (GLFW/glfwWindowHint GLFW/GLFW_VISIBLE GLFW/GLFW_FALSE)
-  (GLFW/glfwWindowHint GLFW/GLFW_RESIZABLE GLFW/GLFW_TRUE)
-
-  (def window (GLFW/glfwCreateWindow 300 300 "Hello World!" 0 0))
-  (when (zero? window)
-    (throw (RuntimeException. "Failed to create GLFW window.")))
-
-  (GLFW/glfwSetKeyCallback window
-                           (reify GLFWKeyCallbackI
-                             (invoke [this window key scancode action mods]
-                               (when (and (= key GLFW/GLFW_KEY_ESCAPE)
-                                          (= action GLFW/GLFW_RELEASE))
-                                 (GLFW/glfwSetWindowShouldClose window true)))))
-
-  (let [stack (MemoryStack/stackPush)
-        p-width (.mallocInit stack 1)
-        p-height (.mallocInit stack 1)]
-    (GLFW/glfwGetWindowSize ^long window p-width p-height)
-    (let [vidmode (-> (GLFW/glfwGetPrimaryMonitor)
-                      (GLFW/glfwGetVideoMode))
-          xpos (/ (- (.width vidmode)
-                     (.get p-width 0))
-                  2)
-          ypos (/ (- (.width vidmode)
-                     (.get p-height 0))
-                  2)]
-      (GLFW/glfwSetWindowPos window xpos ypos))
-    (MemoryStack/stackPop))
-
-  (GLFW/glfwMakeContextCurrent window)
-  (GLFW/glfwSwapInterval 1)
-  (GLFW/glfwShowWindow window))
-
-(defn main-loop []
-  (GL/createCapabilities)
-
-  (GL33/glClearColor 1.0 0.0 0.0 0.0)
-
-  (while (not (GLFW/glfwWindowShouldClose window))
-    (draw)))
-
-(defn draw []
-  (GL33/glClearColor 1.0 0.0 0.0 0.0)
-  (GL33/glClear (bit-or GL33/GL_COLOR_BUFFER_BIT
-                        GL33/GL_DEPTH_BUFFER_BIT))
-
-  (GLFW/glfwSwapBuffers window)
-  (GLFW/glfwPollEvents))
+(defn -create [^Game this]
+  (.setScreen this main-screen))

src/ois/launcher.clj

@@ -0,0 +1,9 @@
+(ns ois.launcher
+  (:require [ois.core :refer :all])
+  (:import [com.badlogic.gdx.backends.lwjgl LwjglApplication]
+           [org.lwjgl.input Keyboard])
+  (:gen-class))
+
+(defn -main []
+  (LwjglApplication. (ois.core.Game.) "demo" 800 600)
+  (Keyboard/enableRepeatEvents true))