add inventory.contains.material[mat]

a quick tag for https://github.com/aufdemrand/Denizen/issues/554

Also add a missing Chat command argument

src/main/java/net/aufdemrand/denizen/objects/dInventory.java

@@ -693,6 +693,44 @@ public String getAttribute(Attribute attribute) {
             }
         }
 
+        // <--[tag]
+        // @attribute <in@inventory.contains.material[<material>]>
+        // @returns Element(Boolean)
+        // @description
+        // Returns whether the inventory contains an item with the specified material.
+        // -->
+        if (attribute.startsWith("contains.material")) {
+            if (attribute.hasContext(2)) {
+                int qty = 1;
+                int attribs = 2;
+                dMaterial material = dMaterial.valueOf(attribute.getContext(2));
+
+                // <--[tag]
+                // @attribute <in@inventory.contains.material[<material>].qty[<#>]>
+                // @returns Element(Boolean)
+                // @description
+                // Returns whether the inventory contains a certain quantity of an item with the
+                // specified material.
+                // -->
+                if (attribute.getAttribute(3).startsWith("qty") &&
+                        attribute.hasContext(3) &&
+                        aH.matchesInteger(attribute.getContext(3))) {
+                    qty = attribute.getIntContext(3);
+                    attribs = 3;
+                }
+
+                int found_items = 0;
+
+                for (ItemStack item : getContents()) {
+                    if (item != null && item.getType() == material.getMaterial())
+                        found_items += item.getAmount();
+                }
+
+                return (found_items >= qty ? Element.TRUE.getAttribute(attribute.fulfill(attribs))
+                        : Element.FALSE.getAttribute(attribute.fulfill(attribs)));
+            }
+        }
+
         // <--[tag]
         // @attribute <in@inventory.contains[<item>]>
         // @returns Element(Boolean)

src/main/java/net/aufdemrand/denizen/scripts/commands/CommandRegistry.java

@@ -510,7 +510,7 @@ public void registerCoreMembers() {
 
         // <--[command]
         // @Name Chat
-        // @Syntax chat ["<text>"] (targets:<entity>|...)
+        // @Syntax chat ["<text>"] (no_target/targets:<entity>|...)
         // @Required 1
         // @Stable stable
         // @Short Causes the NPC to send a chat message to nearby players.
@@ -520,7 +520,8 @@ public void registerCoreMembers() {
         // Chat uses a NPCs SpeechController provided by Citizens2, typically inside 'interact' or 'task'
         // script-containers. Typically there is already player and NPC context inside a queue that is using
         // the 'chat' command. In this case, only a text string is required. Alternatively, target entities
-        // can be specified to have the NPC chat to a different target/targets.
+        // can be specified to have the NPC chat to a different target/targets, or specify 'no_target' to
+        // not send the message to any specific player.
         //
         // Chat from a NPC is formatted by the settings present in Citizens' config.yml. Players being chatted
         // to see a slightly different message than surrounding players. By default, a 'chat' will allow other
@@ -532,7 +533,7 @@ public void registerCoreMembers() {
         // 'Jack says to you, Hello!', however surrounding entities will see something along the lines of
         // 'Jack says to aufdemrand, Hello!'. The format for this is configurable.
         //
-        // If sending messages to the Player without any surrounding entities hearing the message is desireable,
+        // If sending messages to the Player without any surrounding entities hearing the message is desirable,
         // it is often times recommended to instead use the 'narrate' command. Alternatively, on a server-wide scale,
         // the configuration node for the 'max range' can be set to 0, however this is discouraged.
 
@@ -554,7 +555,7 @@ public void registerCoreMembers() {
 
         // -->
         registerCoreMember(ChatCommand.class,
-                "CHAT", "chat [\"<text>\"] (targets:<entity>|...)", 1);
+                "CHAT", "chat [\"<text>\"] (no_target/targets:<entity>|...)", 1);
 
 
         // <--[command]