From c9ebe035fe33108e8b6dc0ff4726eebdc9bbeb2f Mon Sep 17 00:00:00 2001
From: zxtej <83355748+zxtej@users.noreply.github.com>
Date: Sun, 29 Dec 2024 09:38:53 +0000
Subject: [PATCH] Codechange: Use tap/release instead of evaluating at every
 tick

Also fixed a crash where selected could be null if mouse is dragged outside of world bounds
---
 core/src/mindustry/input/DesktopInput.java    | 30 +++++++------------
 .../ui/fragments/BlockConfigFragment.java     |  8 ++---
 2 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/core/src/mindustry/input/DesktopInput.java b/core/src/mindustry/input/DesktopInput.java
index 2ff8e237e8..7c0f7e74f8 100644
--- a/core/src/mindustry/input/DesktopInput.java
+++ b/core/src/mindustry/input/DesktopInput.java
@@ -74,8 +74,6 @@ public class DesktopInput extends InputHandler{
     /** Previously selected tile. */
     public Tile prevSelected;
     private long lastShiftZ;
-    /** Whether the current selected building being dragged from*/
-    private boolean configDragging = false;
 
     @Override
     public void buildUI(Group group){
@@ -190,7 +188,7 @@ public void drawTop(){
             }
         }
 
-        if (configDragging && config.getSelected() != null) {
+        if (config.dragging) {
             Vec2 mouseCoords = input.mouseWorld();
             Building selected = config.getSelected();
             Draw.color(Pal.accent);
@@ -800,22 +798,6 @@ void pollInput(){
         int cursorY = tileY(Core.input.mouseY());
         int rawCursorX = World.toTile(Core.input.mouseWorld().x), rawCursorY = World.toTile(Core.input.mouseWorld().y);
 
-        // Handle drag to config behaviour
-        if (config.selectedCanDrag) {
-            if (input.keyDown(Binding.select)) {
-                if (selected.build == config.getSelected()) configDragging = true;
-            } else if (configDragging) {
-                Building hovered = world.build(cursorX, cursorY);
-                if (hovered != config.getSelected()) {
-                    if (hovered != null) {
-                        config.getSelected().onConfigureBuildTapped(hovered);
-                    }
-                    config.hideConfig();
-                }
-                configDragging = false;
-            }
-        }
-
         //automatically pause building if the current build queue is empty
         if(Core.settings.getBool("buildautopause") && isBuilding && !isBuildingIgnoreNetworking()){
             isBuilding = false;
@@ -931,6 +913,16 @@ else if (Core.input.ctrl()) {
             selectUnitsRect();
         }
 
+        // Handle drag to config behaviour
+        if(config.dragging && Core.input.keyRelease(Binding.select)){
+            config.dragging = false;
+            Building hovered = selected == null ? null : selected.build;
+            if(hovered != config.getSelected()){
+                if(hovered != null) config.getSelected().onConfigureBuildTapped(hovered);
+                config.hideConfig();
+            }
+        }
+
         if(Core.input.keyTap(Binding.select) && !Core.scene.hasMouse()){
             tappedOne = false;
             BuildPlan plan = getPlan(cursorX, cursorY);
diff --git a/core/src/mindustry/ui/fragments/BlockConfigFragment.java b/core/src/mindustry/ui/fragments/BlockConfigFragment.java
index 651c53c1ff..bfaca5ad95 100644
--- a/core/src/mindustry/ui/fragments/BlockConfigFragment.java
+++ b/core/src/mindustry/ui/fragments/BlockConfigFragment.java
@@ -24,7 +24,7 @@ public class BlockConfigFragment{
     );
     Table table = new Table();
     Building selected;
-    public boolean selectedCanDrag = false;
+    public boolean dragging = false;
 
     public void build(Group parent){
         table.visible = false;
@@ -36,7 +36,7 @@ public void build(Group parent){
     public void forceHide(){
         table.visible = false;
         selected = null;
-        selectedCanDrag = false;
+        dragging = false;
     }
 
     public boolean isShown(){
@@ -51,7 +51,7 @@ public void showConfig(Building tile){
         if(selected != null) selected.onConfigureClosed();
         if(tile.configTapped()){
             selected = tile;
-            selectedCanDrag = validBuilds.contains(selected.getClass());
+            dragging = validBuilds.contains(selected.getClass());
             table.visible = true;
             table.clear();
             table.background(null); // clear the background as some blocks set custom ones
@@ -85,7 +85,7 @@ public boolean hasConfigMouse(){
     public void hideConfig(){
         if(selected != null) selected.onConfigureClosed();
         selected = null;
-        selectedCanDrag = false;
+        dragging = false;
         table.actions(Actions.scaleTo(0f, 1f, 0.06f, Interp.pow3Out), Actions.visible(false));
     }
 }