client: add ability to inject custom cs2 scripts

runelite-api/src/main/java/net/runelite/api/Client.java

@@ -1894,6 +1894,14 @@ public interface Client extends OAuthApi, GameEngine
 	 */
 	void setBlacklistDeadNpcs(Set<Integer> blacklist);
 
+	/**
+	 * Adds a custom clientscript to the list of available clientscripts.
+	 *
+	 * @param script compiled clientscript code
+	 * @return the id of the newly-added script
+	 */
+	int addClientScript(byte[] script);
+
 	/**
 	 * Gets an array of tile collision data.
 	 * <p>

runelite-api/src/main/java/net/runelite/api/overlay/OverlayIndex.java

@@ -29,11 +29,13 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.util.HashSet;
 import java.util.Set;
+import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
 
 @Slf4j
 public class OverlayIndex
 {
+	@Getter
 	private static final Set<Integer> overlays = new HashSet<>();
 
 	static

runelite-mixins/src/main/java/net/runelite/mixins/RSAbstractArchiveMixin.java

@@ -1,14 +1,11 @@
 package net.runelite.mixins;
 
-import com.google.common.base.Charsets;
 import com.google.common.hash.Hashing;
 import com.google.common.io.ByteStreams;
 import com.google.common.io.CharStreams;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
-import java.util.HashMap;
-import java.util.List;
 import java.util.Map;
 import net.runelite.api.mixins.Copy;
 import net.runelite.api.mixins.Inject;
@@ -19,7 +16,6 @@ import net.runelite.api.overlay.OverlayIndex;
 import net.runelite.rs.api.RSAbstractArchive;
 import net.runelite.rs.api.RSArchive;
 import net.runelite.rs.api.RSClient;
-import org.apache.commons.io.IOUtils;
 import org.slf4j.Logger;
 
 @Mixin(RSAbstractArchive.class)
@@ -28,11 +24,11 @@ public abstract class RSAbstractArchiveMixin implements RSAbstractArchive
 	@Shadow("client")
 	private static RSClient client;
 
-	@Inject
+	@Shadow("customClientScripts")
-	private boolean overlayOutdated;
+	private static Map<Integer, byte[]> customClientScripts;
 
 	@Inject
-	private Map<String, String> scriptNames;
+	private boolean overlayOutdated;
 
 	@Inject
 	@Override
@@ -54,34 +50,6 @@ public abstract class RSAbstractArchiveMixin implements RSAbstractArchive
 			return rsData;
 		}
 
-		if (scriptNames == null)
-		try
-		{
-			scriptNames = new HashMap<>();
-			InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("scripts/");
-			if (is != null)
-			{
-				List<String> files = IOUtils.readLines(is, Charsets.UTF_8);
-				for (String s : files)
-				{
-					if (s.endsWith(".rs2asm"))
-						continue;
-
-					String scriptName = s.replace(".hash", "");
-					InputStream hashStream = ClassLoader.getSystemClassLoader().getResourceAsStream("scripts/" + scriptName + ".hash");
-					if (hashStream != null)
-					{
-						String scriptHash = (String) IOUtils.readLines(hashStream, Charsets.UTF_8).toArray()[0];
-						scriptNames.put(scriptHash, scriptName);
-					}
-				}
-			}
-		}
-		catch (IOException e)
-		{
-			e.printStackTrace();
-		}
-
 		final Logger log = client.getLogger();
 		final String path = String.format("/runelite/%s/%s", archiveId, groupId);
 
@@ -105,12 +73,16 @@ public abstract class RSAbstractArchiveMixin implements RSAbstractArchive
 			if (!overlayHash.equalsIgnoreCase(originalHash))
 			{
 				log.error("Script " + groupId + " is invalid, and will not be overlaid. This will break plugin(s)!");
-				client.setOutdatedScript(scriptNames.get(overlayHash));
 				overlayOutdated = true;
 				return rsData;
 			}
 		}
 
+		if (customClientScripts.containsKey(archiveId << 16 | groupId))
+		{
+			return customClientScripts.get(archiveId << 16 | groupId);
+		}
+
 		try (final InputStream ovlIn = getClass().getResourceAsStream(path))
 		{
 			return ByteStreams.toByteArray(ovlIn);

runelite-mixins/src/main/java/net/runelite/mixins/RSClientMixin.java

@@ -33,6 +33,7 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.EnumSet;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
@@ -132,6 +133,7 @@ import net.runelite.api.mixins.MethodHook;
 import net.runelite.api.mixins.Mixin;
 import net.runelite.api.mixins.Replace;
 import net.runelite.api.mixins.Shadow;
+import net.runelite.api.overlay.OverlayIndex;
 import net.runelite.api.vars.AccountType;
 import net.runelite.api.widgets.Widget;
 import net.runelite.api.widgets.WidgetConfig;
@@ -315,6 +317,9 @@ public abstract class RSClientMixin implements RSClient
 	@Inject
 	private static int tmpMenuOptionsCount;
 
+	@Inject
+	private static final Map<Integer, byte[]> customClientScripts = new HashMap<>();
+
 	@Inject
 	@Override
 	public void setPrintMenuActions(boolean yes)
@@ -3055,5 +3060,37 @@ public abstract class RSClientMixin implements RSClient
 
 		return null;
 	}
+
+	@Inject
+	@Override
+	public int addClientScript(byte[] script)
+	{
+		assert this.isClientThread() : "addClientScript must be called on client thread";
+
+		int highestUsedScript = -1;
+		for (int index : OverlayIndex.getOverlays())
+		{
+			if ((index >> 16) != 12)
+			{
+				continue;
+			}
+
+			int scriptId = index & 0xFFFF;
+			if (scriptId > highestUsedScript)
+			{
+				highestUsedScript = scriptId;
+			}
+		}
+
+		if (highestUsedScript == -1)
+		{
+			highestUsedScript = 10000;
+		}
+
+		int newScriptId = highestUsedScript + 1;
+		OverlayIndex.getOverlays().add((12 << 16) | newScriptId);
+		customClientScripts.put((12 << 16) | newScriptId, script);
+		return newScriptId;
+	}
 }