Add physical window size overrides

2026-07-28 22:10:01 -04:00
parent eb9f11c251
commit 8f84f0b083
9 changed files with 179 additions and 12 deletions
--- a/godot/WindowLaunchOptions.cs
+++ b/godot/WindowLaunchOptions.cs
@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using Age.Engine.Sys4;
+
+/// <summary>
+/// Presentation-only window dimensions resolved from Godot user arguments. These never redefine the
+/// SYS4 logical canvas, VM coordinates, or AGE surface dimensions.
+/// </summary>
+public readonly record struct WindowLaunchOptions(
+    int Width, int Height, bool WidthOverridden, bool HeightOverridden)
+{
+    public const int MaximumDimension = Sys4LogicalCanvas.MaximumDimension;
+    public bool IsOverridden => WidthOverridden || HeightOverridden;
+
+    public static WindowLaunchOptions Resolve(
+        IReadOnlyList<string> arguments, Sys4LogicalCanvas logicalCanvas)
+    {
+        ArgumentNullException.ThrowIfNull(arguments);
+        int width = logicalCanvas.Width;
+        int height = logicalCanvas.Height;
+        bool widthOverridden = false;
+        bool heightOverridden = false;
+
+        for (int index = 0; index < arguments.Count; index++)
+        {
+            string argument = arguments[index];
+            if (argument is not ("--window-width" or "--window-height")) continue;
+            if (index + 1 >= arguments.Count)
+                throw new ArgumentException($"{argument} requires a pixel value");
+
+            string raw = arguments[++index];
+            if (!int.TryParse(raw, NumberStyles.Integer, CultureInfo.InvariantCulture, out int value)
+                || value <= 0 || value > MaximumDimension)
+                throw new ArgumentException(
+                    $"{argument} must be an integer from 1 through {MaximumDimension}; got '{raw}'");
+
+            if (argument == "--window-width")
+            {
+                width = value;
+                widthOverridden = true;
+            }
+            else
+            {
+                height = value;
+                heightOverridden = true;
+            }
+        }
+
+        return new WindowLaunchOptions(width, height, widthOverridden, heightOverridden);
+    }
+}