[core_bind] Add `is_alive` to Thread. Replace `is_active` with `is_started`.

Replacing `is_active` resolves an API discrepancy between core_bind Thread and core/os Thread.

1 files changed, 12 insertions, 4 deletions

diff --git a/doc/classes/Thread.xml b/doc/classes/Thread.xml
index ae5c0761b1..4e4e2e8731 100644
--- a/doc/classes/Thread.xml
+++ b/doc/classes/Thread.xml
@@ -19,10 +19,17 @@
 				Returns the current [Thread]'s ID, uniquely identifying it among all threads. If the [Thread] is not running this returns an empty string.
 			</description>
 		</method>
-		<method name="is_active" qualifiers="const">
+		<method name="is_alive" qualifiers="const">
 			<return type="bool" />
 			<description>
-				Returns [code]true[/code] if this [Thread] is currently active. An active [Thread] cannot start work on a new method but can be joined with [method wait_to_finish].
+				Returns [code]true[/code] if this [Thread] is currently running. This is useful for determining if [method wait_to_finish] can be called without blocking the calling thread.
+				To check if a [Thread] is joinable, use [method is_started].
+			</description>
+		</method>
+		<method name="is_started" qualifiers="const">
+			<return type="bool" />
+			<description>
+				Returns [code]true[/code] if this [Thread] has been started. Once started, this will return [code]true[/code] until it is joined using [method wait_to_finish]. For checking if a [Thread] is still executing its task, use [method is_alive].
 			</description>
 		</method>
 		<method name="start">
@@ -31,15 +38,16 @@
 			<argument index="1" name="userdata" type="Variant" default="null" />
 			<argument index="2" name="priority" type="int" enum="Thread.Priority" default="1" />
 			<description>
-				Starts a new [Thread] that calls [code]callable[/code] with [code]userdata[/code] passed as an argument. Even if no userdata is passed, [code]method[/code] must accept one argument and it will be null. The [code]priority[/code] of the [Thread] can be changed by passing a value from the [enum Priority] enum.
+				Starts a new [Thread] that calls [code]callable[/code] with [code]userdata[/code] passed as an argument. Even if no userdata is passed, [code]callable[/code] must accept one argument and it will be null. The [code]priority[/code] of the [Thread] can be changed by passing a value from the [enum Priority] enum.
 				Returns [constant OK] on success, or [constant ERR_CANT_CREATE] on failure.
 			</description>
 		</method>
 		<method name="wait_to_finish">
 			<return type="Variant" />
 			<description>
-				Joins the [Thread] and waits for it to finish. Returns what the method called returned.
+				Joins the [Thread] and waits for it to finish. Returns the output of the [Callable] passed to [method start].
 				Should either be used when you want to retrieve the value returned from the method called by the [Thread] or before freeing the instance that contains the [Thread].
+				To determine if this can be called without blocking the calling thread, check if [method is_alive] is [code]false[/code].
 				[b]Note:[/b] After the [Thread] finishes joining it will be disposed. If you want to use it again you will have to create a new instance of it.
 			</description>
 		</method>