CSC/ECE 517 Spring 2013/OSS E629 - Revision history

Cyang14: /* Our Work */

2013-03-24T14:20:38Z

Our Work

← Older revision		Revision as of 14:20, 24 March 2013
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	'''Status''': Fixed.		'''Status''': Fixed.


	===Fixing Minor Bugs===		===Fixing Minor Bugs===

Cyang14: /* Assignment Group Error */

2013-03-24T14:20:04Z

Assignment Group Error

← Older revision		Revision as of 14:20, 24 March 2013
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	In previous JSON backend, if an assignment group has X assignment in it, it will return X copy of that an assignment group, thus there’ll be X*X assignment in total. X times greater than it should be.		In previous JSON backend, if an assignment group has X assignment in it, it will return X copy of that an assignment group, thus there’ll be X*X assignment in total. X times greater than it should be.

	~~We fix this bug by~~		'''Cause''': the backend uses inner join to query the database where it should be left join.

	~~The following is the related code~~:		'''Reproduce''': Create 3 assignment groups, each contains 3 assignments. Make all assignments available to student. Then log into game interface as student. One should see much more assignments there than it should be.

			'''Status''': Fixed.

	===Fixing Minor Bugs===		===Fixing Minor Bugs===

Cyang14: /* Gate Name Error */

2013-03-24T14:19:30Z

Gate Name Error

← Older revision		Revision as of 14:19, 24 March 2013
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	Previous JSON backend didn’t set gate name correctly. Thus when having multiple assignment group (>3) and at least one hub threshold is higher than current user’s XP point, JavaScript frontend falls into infinite loop.		Previous JSON backend didn’t set gate name correctly. Thus when having multiple assignment group (>3) and at least one hub threshold is higher than current user’s XP point, JavaScript frontend falls into infinite loop.

	~~We fix this bug by~~		'''Cause''': frontend gate control code not working, we moive that part of code into backend.

	~~The following is~~ the ~~related code~~:		'''Reproduce''': Just create multiple assignment groups, each group with a XP threshold. Depend on the browsers and browser versions, the front end may stop responding, show black screen or some portal gates not functioning.

			'''Status''': Fixed

	====Assignment Group Error====		====Assignment Group Error====

Cyang14: /* Uncaught Exception */

2013-03-24T14:19:01Z

Uncaught Exception

← Older revision		Revision as of 14:19, 24 March 2013
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	Previous JSON backend throws an uncaught exception when the user has an unsubmitted assignment and he is participating in that assignment.		Previous JSON backend throws an uncaught exception when the user has an unsubmitted assignment and he is participating in that assignment.

	Cause: previous code checks the submitting status prior to the privilege checking.		'''Cause''': previous code checks the submitting status prior to the privilege checking.

	Reproduce: imitate a new assignment, add a student as participant. Then login to the game interface as the student directly.		'''Reproduce''': imitate a new assignment, add a student as participant. Then login to the game interface as the student directly.

	Status: Fixed		'''Status''': Fixed

	====Gate Name Error====		====Gate Name Error====

Cyang14: /* Uncaught Exception */

2013-03-24T14:18:39Z

Uncaught Exception

← Older revision		Revision as of 14:18, 24 March 2013
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	Previous JSON backend throws an uncaught exception when the user has an unsubmitted assignment and he is participating in that assignment.		Previous JSON backend throws an uncaught exception when the user has an unsubmitted assignment and he is participating in that assignment.

	~~We fix this bug by~~		Cause: previous code checks the submitting status prior to the privilege checking.

	~~The following is~~ the ~~related code~~:		Reproduce: imitate a new assignment, add a student as participant. Then login to the game interface as the student directly.

			Status: Fixed

	====Gate Name Error====		====Gate Name Error====

Cyang14: /* Our Work */

2013-03-24T14:17:30Z

Our Work

← Older revision		Revision as of 14:17, 24 March 2013
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	The new XP point system is a weighted score system, where instructor can assign or automatically generate the XP point.		The new XP point system is a weighted score system, where instructor can assign or automatically generate the XP point.


	===Assignment Group Modules===		===Assignment Group Modules===
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	In addition, in previous version of backend code, the code to decide whether an assignment group is “available” to a student appears in both frontend and backend, but neither of them works. So we also rewrite that part and have it implemented at backend.		In addition, in previous version of backend code, the code to decide whether an assignment group is “available” to a student appears in both frontend and backend, but neither of them works. So we also rewrite that part and have it implemented at backend.


	===JavaScript Code Reconstruction===		===JavaScript Code Reconstruction===
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	We also Change the ig module a little bit to support visiting module variable in closure.		We also Change the ig module a little bit to support visiting module variable in closure.


	===Fixing Mega Bugs===		===Fixing Mega Bugs===
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	The following is the related code:		The following is the related code:


	===Fixing Minor Bugs===		===Fixing Minor Bugs===

Cyang14: /* JavaScript Code Reconstruction */

2013-03-24T14:16:36Z

JavaScript Code Reconstruction

← Older revision		Revision as of 14:16, 24 March 2013
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	When the game is running on the Expertiza system, Expertiza should send the game the info it needs to generate the level and game state at load-time. The page should basically load the frontend JavaScript and point it to the JSON string.		When the game is running on the Expertiza system, Expertiza should send the game the info it needs to generate the level and game state at load-time. The page should basically load the frontend JavaScript and point it to the JSON string.

	Previous system ~~get~~ JSON by [http://en.wikipedia.org/wiki/Polling_(computer_science) polling] the ~~server~~. In this strategy, the computer does nothing other than check the status of the ~~backend~~ until it ~~is ready~~, at which point the device is accessed. In order to improve the ~~efficiency~~ of the CPU, we introduced [http://en.wikipedia.org/wiki/Event-driven_programming Event Driven Programming (EDP)] into our design. In EDP, the flow of the program is ~~determined~~ by events. In our case, a callback closure is called when the JSON data hit the frontend.		Previous system fetches JSON string by sending the request and by [http://en.wikipedia.org/wiki/Polling_(computer_science) polling] the socket for response. In this strategy, the computer does nothing other than check the status of the socket until it get hit, at which point the device is accessed. In order to improve the utilization of the CPU time, we introduced [http://en.wikipedia.org/wiki/Event-driven_programming Event Driven Programming (EDP)] into our design. In EDP, the flow of the program is now driven by events. In our case, a callback closure is called when the JSON data hit the frontend.

	We also Change the ig module a little bit to support visiting module variable in closure.		We also Change the ig module a little bit to support visiting module variable in closure.

	~~The related code is as following:~~

	===Fixing Mega Bugs===		===Fixing Mega Bugs===

Cyang14: /* Assignment Group Modules */

2013-03-24T14:12:13Z

Assignment Group Modules

← Older revision		Revision as of 14:12, 24 March 2013
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	===Assignment Group Modules===		===Assignment Group Modules===
	Assignment group module is used to		Assignment group module is used to group similar assignments in to one assignment group, such that as long as the student accumulates enough XP points in one assignment group, he can continue to the next group regardless whether there is any assignment in this group left untouched.

	Previous assignment group from the previous project E407 is a fake module. ~~In this version,~~ the ~~code to decide whether an assignment group~~ is ~~“available” to a student should appear in both frontend and backend, but neither of them works~~. So we rewrite it and assign ~~privileges~~ to it.		Previous assignment group from the previous project E407 is a fake module. We believe the fake module is there for testing proposes. So we rewrite the MVC code for the assignment group module and assign access privilege to it.

	~~The following is~~ the code ~~for the~~ assignment group ~~module:~~		In addition, in previous version of backend code, the code to decide whether an assignment group is “available” to a student appears in both frontend and backend, but neither of them works. So we also rewrite that part and have it implemented at backend.

	===JavaScript Code Reconstruction===		===JavaScript Code Reconstruction===

Cyang14: /* Experience Point Report */

2013-03-24T14:10:41Z

Experience Point Report

← Older revision		Revision as of 14:10, 24 March 2013
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	===Experience Point Report===		===Experience Point Report===
	In this game, the player doesn't receive grades; rather, he gains experience(XP), ), the most important thing about the XP points is that they can accumulate instead of just getting average as student’s final score. As an example, if a student scored 80 in the first several assignments may eventually lower his/her grade if he decides to do some extra work on extra assignment and got 70 in the extra assignment. The grade can either automatically generated by multiplying percentage score with the weight of assignment, it can also be set by the instructor manually. The professor would convert the experience values of the players at the end of the course into grades.		In this game, the player doesn't receive grades; rather, he gains experience(XP), the most important thing about the XP points is that they can accumulate instead of just getting average as student’s final score. As an example, if a student scored 80 in the first several assignments may eventually lower his/her grade if he decides to do some extra work on extra assignment and got 70 in the extra assignment. The grade can either automatically generated by multiplying percentage score with the weight of assignment, it can also be set by the instructor manually. The professor would convert the experience values of the players at the end of the course into grades.

	The previous XP logic in JSON string generating module is a piece of static code which always just sends a manually set percentage score as the XP point. A part of our work is to rewrite this XP point system.		The previous XP logic in JSON string generating module is a piece of static code which always just sends a manually set percentage score as the XP point. A part of our work is to rewrite this XP point system.

Cyang14: /* Experience Point Report */

2013-03-24T14:10:09Z

Experience Point Report

← Older revision		Revision as of 14:10, 24 March 2013
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	===Experience Point Report===		===Experience Point Report===
	In this game, the player doesn't receive grades; rather, he gains experience(XP), and the professor would convert the experience values of the players at the end of the course into grades.		In this game, the player doesn't receive grades; rather, he gains experience(XP), ), the most important thing about the XP points is that they can accumulate instead of just getting average as student’s final score. As an example, if a student scored 80 in the first several assignments may eventually lower his/her grade if he decides to do some extra work on extra assignment and got 70 in the extra assignment. The grade can either automatically generated by multiplying percentage score with the weight of assignment, it can also be set by the instructor manually. The professor would convert the experience values of the players at the end of the course into grades.

	The ~~Previous~~ XP is a ~~fake one, they~~ just ~~send the "grade"~~ score as the XP point. ~~So one~~ part of work is to rewrite this ~~part~~.		The previous XP logic in JSON string generating module is a piece of static code which always just sends a manually set percentage score as the XP point. A part of our work is to rewrite this XP point system.

	The new XP point system is a weighted score system, where instructor can assign or automatically generate the XP point.		The new XP point system is a weighted score system, where instructor can assign or automatically generate the XP point.

	~~The following is the code for XP point report system:~~

	===Assignment Group Modules===		===Assignment Group Modules===