imgui work

docs/src/progress/renderertodo.md

@@ -1330,6 +1330,8 @@ Setup scaffolding for drag-and-drop asset handling
 Editor mode asset file drag and drop
 Editor mode pauses simulation
 Tabs for editor view
+ImGui drag-and-drop into viewport functionality
+Normalized mouse pos lookup function
 
 
 

src/main/java/electrosphere/client/ui/menu/editor/ImGuiEditorWindows.java

@@ -51,6 +51,13 @@ public class ImGuiEditorWindows {
                     }
                     if(ImGui.beginTabItem("Assets")){
                         ImGui.text("asset selector here");
+                        if(ImGui.button("testasset")){
+                                
+                        }
+                        if(ImGui.beginDragDropSource()){
+                            ImGui.setDragDropPayload("asdf");
+                            ImGui.endDragDropSource();
+                        }
                         ImGui.endTabItem();
                     }
                     if(ImGui.beginTabItem("Hierarchy")){

src/main/java/electrosphere/controls/ControlHandler.java

@@ -14,6 +14,7 @@ import java.util.LinkedList;
 import java.util.List;
 
 import org.joml.Vector2f;
+import org.lwjgl.glfw.GLFW;
 
 import electrosphere.client.entity.camera.CameraEntityUtils;
 import electrosphere.client.ui.menu.WindowStrings;
@@ -509,10 +510,25 @@ public class ControlHandler {
     public Vector2f getMousePosition(){
         double posX[] = new double[1];
         double posY[] = new double[1];
-        glfwGetCursorPos(Globals.window, posX, posY);
+        GLFW.glfwGetCursorPos(Globals.window, posX, posY);
         Vector2f rVal = new Vector2f((float)posX[0],(float)posY[0]);
         return rVal;
     }
+
+    /**
+     * Gets the mouse position as a vector2f
+     * @return The vector containing the mouse position
+     */
+    public Vector2f getMousePositionNormalized(){
+        double posX[] = new double[1];
+        double posY[] = new double[1];
+        GLFW.glfwGetCursorPos(Globals.window, posX, posY);
+        int sizeX[] = new int[1];
+        int sizeY[] = new int[1];
+        GLFW.glfwGetWindowSize(Globals.window, sizeX, sizeY);
+        Vector2f rVal = new Vector2f((float)((2.0 * posX[0] / sizeX[0]) - 1.0),(float)(1.0 - (2.0 * posY[0] / sizeY[0])));
+        return rVal;
+    }
     
     /**
      * Sets whether the engine should try to recapture window focus next frame or not
@@ -544,10 +560,12 @@ public class ControlHandler {
      */
     public void setIsThirdPerson(boolean isThirdPerson){
         this.cameraIsThirdPerson = isThirdPerson;
-        CameraEntityUtils.initCamera();
-        ClientEquipState playerEquipState = ClientEquipState.getClientEquipState(Globals.playerEntity);
-        if(playerEquipState != null){
-            playerEquipState.evaluatePlayerAttachments();
+        if(Globals.playerEntity != null){
+            CameraEntityUtils.initCamera();
+            ClientEquipState playerEquipState = ClientEquipState.getClientEquipState(Globals.playerEntity);
+            if(playerEquipState != null){
+                playerEquipState.evaluatePlayerAttachments();
+            }
         }
     }
     

src/main/java/electrosphere/renderer/pipelines/ImGuiPipeline.java

@@ -6,11 +6,14 @@ import java.util.concurrent.CopyOnWriteArrayList;
 import electrosphere.client.ui.menu.debug.ImGuiWindowMacros;
 import electrosphere.client.ui.menu.editor.ImGuiEditorWindows;
 import electrosphere.engine.Globals;
+import electrosphere.logger.LoggerInterface;
 import electrosphere.renderer.OpenGLState;
 import electrosphere.renderer.RenderPipelineState;
 import electrosphere.renderer.ui.imgui.ImGuiWindow;
 import imgui.ImGui;
+import imgui.ImGuiViewport;
 import imgui.extension.implot.ImPlot;
+import imgui.flag.ImGuiWindowFlags;
 import imgui.gl3.ImGuiImplGl3;
 import imgui.glfw.ImGuiImplGlfw;
 import imgui.internal.ImGuiContext;
@@ -58,6 +61,9 @@ public class ImGuiPipeline implements RenderPipeline {
         if(imGuiShouldRender){
             imGuiGlfw.newFrame();
             ImGui.newFrame();
+            if(ImGuiPipeline.shouldRenderDragAndDropTarget()){
+                ImGuiPipeline.renderDragAndDropTarget();
+            }
             for(ImGuiWindow window : imGuiWindows){
                 window.draw();
             }
@@ -98,6 +104,44 @@ public class ImGuiPipeline implements RenderPipeline {
         return false;
     }
 
+    /**
+     * Renders the drag and drop target window
+     */
+    private static void renderDragAndDropTarget(){
+        //drag and drop target
+        ImGui.begin("dndTargetWindow",
+            0
+            |
+            ImGuiWindowFlags.NoMove | ImGuiWindowFlags.NoBackground
+            | ImGuiWindowFlags.NoNav | ImGuiWindowFlags.NoDecoration
+            // | ImGuiWindowFlags.NoInputs
+        );
+        ImGuiViewport viewport = ImGui.getWindowViewport();
+        ImGui.setWindowSize(viewport.getSizeX(), viewport.getSizeY());
+        ImGui.setWindowPos(0, 0);
+        ImGui.invisibleButton("dndTargetButton", viewport.getSizeX(), viewport.getSizeY());
+        if(ImGui.beginDragDropTarget()){
+            Object payload = ImGui.getDragDropPayload();
+            if(payload != null){
+                String text = ImGui.acceptDragDropPayload(String.class);
+                if(text != null){
+                    LoggerInterface.loggerUI.WARNING("ImGui received drag'n'drop: " + text + " - " + payload);
+                    LoggerInterface.loggerUI.WARNING(Globals.controlHandler.getMousePositionNormalized() + "");
+                }
+            }
+            ImGui.endDragDropTarget();
+        }
+        ImGui.end();
+    }
+
+    /**
+     * Checks if the drag and drop target should be rendered
+     * @return true if it should be rendered, false otherwise
+     */
+    private static boolean shouldRenderDragAndDropTarget(){
+        return ImGuiEditorWindows.getHierarchyWindow().isOpen();
+    }
+
 
     
 }