runelite-api: add param accessors

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

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2020 Abex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.api;
+
+/**
+ * A composition that can hold `param` keys. This lets Jagex attach arbitrary constant
+ * data to certain items, objects, npcs, or structs for use in cs2
+ *
+ * @see ParamID
+ */
+public interface ParamHolder
+{
+	IterableHashTable<Node> getParams();
+	void setParams(IterableHashTable<Node> params);
+
+	/**
+	 * Gets the value of a given {@link ParamID}, or its default if it is unset
+	 */
+	int getIntValue(int paramID);
+
+	/**
+	 * Sets the value of a given {@link ParamID}
+	 */
+	void setValue(int paramID, int value);
+
+	/**
+	 * Gets the value of a given {@link ParamID}, or its default if it is unset
+	 */
+	String getStringValue(int paramID);
+
+	/**
+	 * Sets the value of a given {@link ParamID}
+	 */
+	void setValue(int paramID, String value);
+}