Added invert mouse option.

App.config

@@ -190,6 +190,9 @@
             <setting name="XInputMoveSpeed" serializeAs="String">
                 <value>15</value>
             </setting>
+            <setting name="MouseInvert" serializeAs="String">
+                <value>False</value>
+            </setting>
         </CodeWalker.Properties.Settings>
     </userSettings>
 </configuration>

Forms/ModelForm.cs

@@ -44,6 +44,7 @@ namespace CodeWalker.Forms
         int MouseY;
         System.Drawing.Point MouseDownPoint;
         System.Drawing.Point MouseLastPoint;
+        bool MouseInvert = Settings.Default.MouseInvert;
 
 
 
@@ -1051,6 +1052,11 @@ namespace CodeWalker.Forms
             int dx = e.X - MouseX;
             int dy = e.Y - MouseY;
 
+            if (MouseInvert)
+            {
+                dy = -dy;
+            }
+
             if (MouseLButtonDown)
             {
                 camera.MouseRotate(dx, dy);

Properties/Settings.Designer.cs

@@ -686,5 +686,17 @@ namespace CodeWalker.Properties {
                 this["XInputMoveSpeed"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("False")]
+        public bool MouseInvert {
+            get {
+                return ((bool)(this["MouseInvert"]));
+            }
+            set {
+                this["MouseInvert"] = value;
+            }
+        }
     }
 }

Properties/Settings.settings

@@ -180,5 +180,8 @@
     <Setting Name="XInputMoveSpeed" Type="System.Single" Scope="User">
       <Value Profile="(Default)">15</Value>
     </Setting>
+    <Setting Name="MouseInvert" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">False</Value>
+    </Setting>
   </Settings>
 </SettingsFile>

SettingsForm.Designer.cs

@@ -80,6 +80,7 @@
             this.SaveButton = new System.Windows.Forms.Button();
             this.ResetButton = new System.Windows.Forms.Button();
             this.FolderBrowserDialog = new System.Windows.Forms.FolderBrowserDialog();
+            this.MouseInvertCheckBox = new System.Windows.Forms.CheckBox();
             this.MainTabControl.SuspendLayout();
             this.ControlsTabPage.SuspendLayout();
             this.groupBox2.SuspendLayout();
@@ -126,6 +127,7 @@
             // 
             this.groupBox2.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) 
             | System.Windows.Forms.AnchorStyles.Right)));
+            this.groupBox2.Controls.Add(this.MouseInvertCheckBox);
             this.groupBox2.Controls.Add(this.label4);
             this.groupBox2.Controls.Add(this.label3);
             this.groupBox2.Controls.Add(this.label2);
@@ -141,7 +143,7 @@
             // label4
             // 
             this.label4.AutoSize = true;
-            this.label4.Location = new System.Drawing.Point(242, 30);
+            this.label4.Location = new System.Drawing.Point(237, 17);
             this.label4.Name = "label4";
             this.label4.Size = new System.Drawing.Size(181, 26);
             this.label4.TabIndex = 8;
@@ -317,7 +319,7 @@
             this.AdvancedTabPage.Location = new System.Drawing.Point(4, 22);
             this.AdvancedTabPage.Name = "AdvancedTabPage";
             this.AdvancedTabPage.Padding = new System.Windows.Forms.Padding(3);
-            this.AdvancedTabPage.Size = new System.Drawing.Size(452, 404);
+            this.AdvancedTabPage.Size = new System.Drawing.Size(452, 425);
             this.AdvancedTabPage.TabIndex = 1;
             this.AdvancedTabPage.Text = "Advanced";
             this.AdvancedTabPage.UseVisualStyleBackColor = true;
@@ -783,6 +785,17 @@
             this.ResetButton.UseVisualStyleBackColor = true;
             this.ResetButton.Click += new System.EventHandler(this.ResetButton_Click);
             // 
+            // MouseInvertCheckBox
+            // 
+            this.MouseInvertCheckBox.AutoSize = true;
+            this.MouseInvertCheckBox.Location = new System.Drawing.Point(240, 55);
+            this.MouseInvertCheckBox.Name = "MouseInvertCheckBox";
+            this.MouseInvertCheckBox.Size = new System.Drawing.Size(118, 17);
+            this.MouseInvertCheckBox.TabIndex = 9;
+            this.MouseInvertCheckBox.Text = "Invert mouse Y axis";
+            this.MouseInvertCheckBox.UseVisualStyleBackColor = true;
+            this.MouseInvertCheckBox.CheckedChanged += new System.EventHandler(this.MouseInvertCheckBox_CheckedChanged);
+            // 
             // SettingsForm
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
@@ -871,5 +884,6 @@
         private System.Windows.Forms.Label label20;
         private System.Windows.Forms.NumericUpDown TextureCacheSizeUpDown;
         private System.Windows.Forms.Label label21;
+        private System.Windows.Forms.CheckBox MouseInvertCheckBox;
     }
 }

SettingsForm.cs

@@ -21,7 +21,7 @@ namespace CodeWalker
 
         private float camSensitivity = Settings.Default.CameraSensitivity;
         private float camSmoothing = Settings.Default.CameraSmoothing;
-
+        private bool mouseinvert = Settings.Default.MouseInvert;
 
 
         public SettingsForm(WorldForm owner)
@@ -67,6 +67,7 @@ namespace CodeWalker
         {
             CameraSensitivityUpDown.Value = (decimal)camSensitivity * 1000;
             CameraSmoothingUpDown.Value = (decimal)camSmoothing;
+            MouseInvertCheckBox.Checked = mouseinvert;
         }
         private void LoadAdvancedSettings()
         {
@@ -203,6 +204,16 @@ namespace CodeWalker
             }
         }
 
+        private void MouseInvertCheckBox_CheckedChanged(object sender, EventArgs e)
+        {
+            mouseinvert = MouseInvertCheckBox.Checked;
+            Settings.Default.MouseInvert = mouseinvert;
+            if (worldForm != null)
+            {
+                worldForm.SetMouseInverted(mouseinvert);
+            }
+        }
+
         private void SaveButton_Click(object sender, EventArgs e)
         {
             //apply and save the settings.

WorldForm.cs

@@ -71,6 +71,7 @@ namespace CodeWalker
         int MouseControlWheel = 0;
         MouseButtons MouseControlButtons = MouseButtons.None;
         MouseButtons MouseControlButtonsPrev = MouseButtons.None;
+        bool MouseInvert = Settings.Default.MouseInvert;
 
         bool ControlFireToggle = false;
 
@@ -1709,6 +1710,10 @@ namespace CodeWalker
             camera.Sensitivity = sensitivity;
             camera.Smoothness = smoothing;
         }
+        public void SetMouseInverted(bool invert)
+        {
+            MouseInvert = invert;
+        }
 
         public void SetKeyBindings(KeyBindings kb)
         {
@@ -5540,6 +5545,11 @@ namespace CodeWalker
             int dx = e.X - MouseX;
             int dy = e.Y - MouseY;
 
+            if (MouseInvert)
+            {
+                dy = -dy;
+            }
+
             if (ControlMode == WorldControlMode.Free)
             {
                 if (MouseLButtonDown)