From 3deacd8062510be104cdaeb0f136f93bd70f1007 Mon Sep 17 00:00:00 2001
From: Matthew Bowra-Dean <matthew@ijw.co.nz>
Date: Thu, 15 Oct 2009 18:37:24 +1300
Subject: [PATCH] Beginnings of cursor support.

---
 OpenRa.Game/Cursor.cs                    | 29 ++++++++++++++++++
 OpenRa.Game/Graphics/CursorSequence.cs   | 39 ++++++++++++++++++++++++
 OpenRa.Game/Graphics/SequenceProvider.cs | 18 +++++++++++
 OpenRa.Game/OpenRa.Game.csproj           |  2 ++
 sequences.xml                            | 19 ++++++++++++
 5 files changed, 107 insertions(+)
 create mode 100644 OpenRa.Game/Cursor.cs
 create mode 100644 OpenRa.Game/Graphics/CursorSequence.cs

diff --git a/OpenRa.Game/Cursor.cs b/OpenRa.Game/Cursor.cs
new file mode 100644
index 0000000000..4363dd7fbb
--- /dev/null
+++ b/OpenRa.Game/Cursor.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRa.Game.Graphics;
+using System.IO;
+
+namespace OpenRa.Game
+{
+	public class Cursor
+	{
+		CursorSequence sequence;
+		Cursor(string cursor)
+		{
+			sequence = SequenceProvider.GetCursorSequence(cursor);
+			
+		}
+
+		public static Cursor Default
+		{
+			get { return new Cursor("default"); }
+		}
+
+		public static Cursor Move
+		{
+			get { return new Cursor("move"); }
+		}
+	}
+}
diff --git a/OpenRa.Game/Graphics/CursorSequence.cs b/OpenRa.Game/Graphics/CursorSequence.cs
new file mode 100644
index 0000000000..c49ba51f28
--- /dev/null
+++ b/OpenRa.Game/Graphics/CursorSequence.cs
@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Xml;
+
+namespace OpenRa.Game.Graphics
+{
+	class CursorSequence
+	{
+		readonly int start, length;
+
+		public int Start { get { return start; } }
+		public int End { get { return start + length; } }
+		public int Length { get { return length; } }
+
+		Sprite[] sprites;
+		public CursorSequence(string cursorSrc, XmlElement e)
+		{
+			sprites = CursorSheetBuilder.LoadAllSprites(cursorSrc, ".shp");
+			
+			start = int.Parse(e.GetAttribute("start"));
+
+			if (e.GetAttribute("length") == "*" || e.GetAttribute("end") == "*")
+				length = sprites.Length - start;
+			else if (e.HasAttribute("length"))
+				length = int.Parse(e.GetAttribute("length"));
+			else if (e.HasAttribute("end"))
+				length = int.Parse(e.GetAttribute("end")) - start;
+			else
+				length = 1;
+		}
+
+		public Sprite GetSprite(int frame)
+		{
+			return sprites[(frame % length) + start];
+		}
+	}
+}
diff --git a/OpenRa.Game/Graphics/SequenceProvider.cs b/OpenRa.Game/Graphics/SequenceProvider.cs
index c233ff2780..7d0b9fb357 100644
--- a/OpenRa.Game/Graphics/SequenceProvider.cs
+++ b/OpenRa.Game/Graphics/SequenceProvider.cs
@@ -9,6 +9,8 @@ namespace OpenRa.Game.Graphics
 		static Dictionary<string, Dictionary<string, Sequence>> units =
 			new Dictionary<string, Dictionary<string, Sequence>>();
 
+		static Dictionary<string, CursorSequence> cursors = new Dictionary<string, CursorSequence>();
+
 		static SequenceProvider()
 		{
 			XmlDocument document = new XmlDocument();
@@ -16,6 +18,17 @@ namespace OpenRa.Game.Graphics
 
 			foreach (XmlElement eUnit in document.SelectNodes("/sequences/unit"))
 				LoadSequencesForUnit(eUnit);
+
+			foreach (XmlElement eCursor in document.SelectNodes("/sequences/cursor"))
+				LoadSequencesForCursor(eCursor);
+		}
+
+		static void LoadSequencesForCursor(XmlElement eCursor)
+		{
+			string cursorSrc = eCursor.GetAttribute("src");
+
+			foreach (XmlElement eSequence in eCursor.SelectNodes("./sequence"))
+				cursors.Add(eSequence.GetAttribute("name"), new CursorSequence(cursorSrc, eSequence));
 		}
 
 		public static void ForcePrecache() { }	// force static ctor to run
@@ -35,5 +48,10 @@ namespace OpenRa.Game.Graphics
 		{
 			return units[unitName][sequenceName];
 		}
+
+		public static CursorSequence GetCursorSequence(string cursor)
+		{
+			return cursors[cursor];
+		}
 	}
 }
diff --git a/OpenRa.Game/OpenRa.Game.csproj b/OpenRa.Game/OpenRa.Game.csproj
index e53b7c6fc1..f5d6f3fddf 100644
--- a/OpenRa.Game/OpenRa.Game.csproj
+++ b/OpenRa.Game/OpenRa.Game.csproj
@@ -76,6 +76,7 @@
   <ItemGroup>
     <Compile Include="Actor.cs" />
     <Compile Include="Controller.cs" />
+    <Compile Include="Cursor.cs" />
     <Compile Include="GameRules\FieldLoader.cs" />
     <Compile Include="GameRules\Footprint.cs" />
     <Compile Include="GameRules\InfoLoader.cs" />
@@ -86,6 +87,7 @@
     <Compile Include="GameRules\WeaponInfo.cs" />
     <Compile Include="Graphics\Animation.cs" />
     <Compile Include="Game.cs" />
+    <Compile Include="Graphics\CursorSequence.cs" />
     <Compile Include="Graphics\CursorSheetBuilder.cs" />
     <Compile Include="Graphics\LineRenderer.cs" />
     <Compile Include="Graphics\OverlayRenderer.cs" />
diff --git a/sequences.xml b/sequences.xml
index 2bec7d02cb..59e6f56358 100644
--- a/sequences.xml
+++ b/sequences.xml
@@ -311,5 +311,24 @@
 	<unit name="clock">
 		<sequence name="idle" start="0" length="*"/>
 	</unit>
+
+	<cursor src="mouse">
+		<sequence name="default" start="0" />
+		<sequence name="scroll-u" start="1" />
+		<sequence name="scroll-ur" start="2" />
+		<sequence name="scroll-r" start="3" />
+		<sequence name="scroll-dr" start="4" />
+		<sequence name="scroll-d" start="5" />
+		<sequence name="scroll-dl" start="6" />
+		<sequence name="scroll-l" start="7" />
+		<sequence name="scroll-ul" start="8" />
+		<sequence name="scroll-blocked" start="9" />
+		<sequence name="move" start="10" length="4" />
+		<sequence name="move-blocked" start="14" />
+		<sequence name="select" start="15" length="6" />
+		<sequence name="attack" start="21" length="8" />
+		<sequence name="move-minimap" start="29" length="6" />
+		<sequence name="repair" start="35" length="24" />
+	</cursor>
 	
 </sequences>