Enhance power charger UI window to show count of other charging players

NebulaPatcher/Patches/Transpilers/UIPowerNodeWindow_Transpiler.cs

@@ -0,0 +1,70 @@
+#region
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Reflection.Emit;
+using HarmonyLib;
+using NebulaModel.Logger;
+using NebulaWorld;
+
+#endregion
+
+namespace NebulaPatcher.Patches.Transpilers;
+
+[HarmonyPatch(typeof(UIPowerNodeWindow))]
+internal class UIPowerNodeWindow_Transpiler
+{
+    [HarmonyTranspiler]
+    [HarmonyPatch(nameof(UIPowerNodeWindow._OnUpdate))]
+    public static IEnumerable<CodeInstruction> OnUpdate_Transpiler(IEnumerable<CodeInstruction> instructions)
+    {
+        var codeInstructions = instructions as CodeInstruction[] ?? instructions.ToArray();
+        try
+        {
+
+            // from: if (powerNodeComponent.requiredEnergy > powerNodeComponent.idleEnergyPerTick && this.player.mecha.energyChanges[2] > 0.0)
+            // to:   if (powerNodeComponent.requiredEnergy > powerNodeComponent.idleEnergyPerTick)
+            var codeMatcher = new CodeMatcher(codeInstructions)
+                .MatchForward(false,
+                    new CodeMatch(OpCodes.Ldarg_0),
+                    new CodeMatch(OpCodes.Ldfld),
+                    new CodeMatch(i => i.opcode == OpCodes.Callvirt && ((MethodInfo)i.operand).Name == "get_mecha"),
+                    new CodeMatch(i => i.opcode == OpCodes.Ldfld && ((FieldInfo)i.operand).Name == "energyChanges")
+                )
+                .RemoveInstructions(8);
+
+            // from: this.chargeStateValueText.text = "正在充电".Translate();
+            // to:   this.chargeStateValueText.text = ChargeStateText("正在充电".Translate());
+            codeMatcher.MatchForward(false,
+                    new CodeMatch(i => i.opcode == OpCodes.Ldfld && ((FieldInfo)i.operand).Name == "chargeStateValueText"))
+                .MatchForward(false,
+                    new CodeMatch(i => i.opcode == OpCodes.Callvirt && ((MethodInfo)i.operand).Name == "set_text")
+                )
+                .Insert(
+                    new CodeInstruction(OpCodes.Ldarg_0),
+                    new CodeInstruction(OpCodes.Call, AccessTools.Method(typeof(UIPowerNodeWindow_Transpiler), nameof(ChargeStateText)))
+                );
+
+            return codeMatcher.InstructionEnumeration();
+        }
+        catch (Exception e)
+        {
+            Log.Warn("UIPowerNodeWindow._OnUpdate Transpiler failed. Charger UI will be unchanged.");
+            Log.Warn(e);
+            return codeInstructions;
+        }
+    }
+
+    private static string ChargeStateText(string oringalValue, UIPowerNodeWindow powerNodeWindow)
+    {
+        if (!Multiplayer.IsActive)
+        {
+            return oringalValue;
+        }
+        var hashId = ((long)powerNodeWindow.factory.planetId << 32) | (long)powerNodeWindow.nodeId;
+        Multiplayer.Session.PowerTowers.RemoteChargerHashIds.TryGetValue(hashId, out var count);
+        return oringalValue + '[' + count + ']';
+    }
+}