on.varChange - Revision history

Adriweb: changed create by construction (valid in recent APIs)

2015-06-18T01:30:14Z

changed create by construction (valid in recent APIs)

Levak: /* Example */ Fixed link adding /index.php

2013-05-20T00:46:21Z

Example: Fixed link adding /index.php

Adriweb at 11:24, 29 January 2012

2012-01-29T11:24:38Z

Adriweb at 11:19, 29 January 2012

2012-01-29T11:19:44Z

Adriweb at 11:19, 29 January 2012

2012-01-29T11:19:28Z

Adriweb at 13:06, 2 November 2011

2011-11-02T13:06:08Z

Levak: Created page with " Category:Events"

2011-05-27T23:56:12Z

Created page with " Category:Events"

New page

[[Category:Events]]

@@ Line 22: / Line 22: @@
 <source lang="lua">
-function on.create()
+function on.construction()
     if not var.recall("highscore") then
       highscore = 0

@@ Line 18: / Line 18: @@
 This example is about Highscore Saving.<br />
-More details here : http://www.inspired-lua.org/2011/08/save-a-high-score-without-cheating-possibility/
+More details here : http://www.inspired-lua.org/index.php/2011/08/save-a-high-score-without-cheating-possibility/
 <source lang="lua">

@@ Line 30: / Line 30: @@
   end
-  function on.varChange(list)
+  function on.varChange(varlist)
-    for k, v in pairs(list) do
+    for k, v in pairs(varlist) do
       if k == "highscore" then
         if var.recall(k) ~= highscore then

@@ Line 7: / Line 7: @@
 on.'''varChange'''(''varlist'')
 <br />
 ==Return values==

← Older revision		Revision as of 11:19, 29 January 2012
Line 1:		Line 1:
−	This event gets fired when a [[var.monitor\|monitored variable]] gets changed.	+	This event gets fired when a [[var.monitor\|monitored variable]] gets changed.<br />
		+	It has an argument it creates by itself (like 'gc' with on.paint), which is ''varlist'', being a list of variable names whose values were changed.<br />
		+	This handler must return a value to indicate if it accepts the new value(s) or vetoes the change.
		+
		+	==Syntax==
		+
		+	on.'''varChange'''(''varlist'')
		+	<br />
		+
		+
		+	==Return values==
		+	Valid return values are:
		+	* 0 Success. The script application accepts the change.
		+	* -1 Veto range. The new value is unsatisfactory because it is outside the acceptable range, i.e. too low or too high.
		+	* -2 Veto type. The new value is unsatisfactory because its type cannot be used by the script application.
		+	* -3 Veto existence. Another application deleted the variable and this application
		+
		+	==Example==
		+
		+	This example is about Highscore Saving.<br />
		+	More details here : http://www.inspired-lua.org/2011/08/save-a-high-score-without-cheating-possibility/
		+
		+	<source lang="lua">
		+
		+	function on.create()
		+	if not var.recall("highscore") then
		+	highscore = 0
		+	var.store("highscore", highscore)
		+	end
		+	var.monitor("highscore")
		+	end
		+
		+	function on.varChange(list)
		+	for k, v in pairs(list) do
		+	if k == "highscore" then
		+	if var.recall(k) ~= highscore then
		+	return 1 -- it is an external change, block modifications
		+	else
		+	return 0 -- it is an internal change, allow modifications
		+	end
		+	end
		+	end
		+	return 0 -- allow modifications of other monitored variables if any
		+	end
		+	</source>

	[[Category:Events]]		[[Category:Events]]

← Older revision		Revision as of 13:06, 2 November 2011
Line 1:		Line 1:
−		+	This event gets fired when a [[var.monitor\|monitored variable]] gets changed.

	[[Category:Events]]		[[Category:Events]]