Parabellum's Projects Tracker - ParaJVE
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ID: Category: Severity: Reproducibility: Date Submitted: Last Update:
21 Framework feature N/A 2009-01-14 12:59 2009-06-26 10:54
Reporter: parabellum Platform: ALL  
Assigned To: parabellum OS: -  
Priority: normal OS Version: -  
Status: resolved Product Version: Release 0.6.0  
Product Build: Resolution: fixed  
Projection: none      
ETA: < 1 week Fixed in Version: 0.7.0 (Milestone)  
Cartridge: -
Summary: 0000021: Implement a Save / Load feature (emulator state persistence)
Description: Having a way to save the current state of the emulator, then load it back later will greatly benefit to ParaJVE : The player would then be able to suspend and resume long gaming sessions, as well as submit specific testcases if appropriate.
Steps To Reproduce:
Additional Information:
System Description: Not platform dependant
Relationships
Attached Files: png file icon load.png [^] (30,688 bytes) 2009-06-26 10:53
Issue History
Date Modified Username Field Change
2009-01-14 12:59 parabellum New Issue
2009-01-14 12:59 parabellum Status new => assigned
2009-01-14 12:59 parabellum Assigned To => parabellum
2009-01-14 12:59 parabellum Cartridge => -
2009-01-14 13:00 parabellum Assigned To parabellum =>
2009-01-19 18:02 parabellum Status assigned => confirmed
2009-04-13 01:41 parabellum Note Added: 0000020
2009-04-13 01:41 parabellum Status confirmed => assigned
2009-04-13 01:41 parabellum Target Version 1.0.0 (Milestone) => 0.7.0 (Milestone)
2009-06-26 10:42 parabellum Note Added: 0000022
2009-06-26 10:44 parabellum Note Edited: 0000022
2009-06-26 10:45 parabellum Note Edited: 0000022
2009-06-26 10:53 parabellum Note View State: public: 22
2009-06-26 10:53 parabellum File Added: load.png
2009-06-26 10:54 parabellum Assigned To => parabellum
2009-06-26 10:54 parabellum Status assigned => resolved
2009-06-26 10:54 parabellum Resolution open => fixed
2009-06-26 10:54 parabellum ETA none => < 1 week
2009-06-26 10:54 parabellum Fixed in Version => 0.7.0 (Milestone)
2009-06-26 10:54 parabellum Target Version 0.8.0 (Milestone) => 0.7.0 (Milestone)

Notes
(0000020)
parabellum   
2009-04-13 01:41   
Implemented a basic load/save feature (that only stores the CPU/VIA/PSG/RAM states at the moment). It is enough to save/load games in most cases, but it can sometime fail to load back, since the analogic cores are not saved yet.

Also, it is more like a QuickSave/QuickLoad feature, since the user cannot choose the target/source save file yet.
(0000022)
parabellum   
2009-06-26 10:42   
(edited on: 2009-06-26 10:45)
ParaJVE can now save and reload its full state (including the vectors work buffer) in small binary files (usually less than 4KB).

There are two kind of save/load features :

Quick Saves

When the user presses F5, the emulator will save its current state in a Quick-Save slot ; this slot will be loaded back when F9 is pressed. Each game has a specific Quick-Save slot (basically derived from its binary CRC), so quick-saving one game will not overwrite the Quick-Save slot of another game.
When Quick-Saving/Quick-Loading, the user user is not asked for a file name, as all Quick-Save files are located in the <data/saves/quick> folder.

Standard Saves

When the "Save..." item is clicked in the "File" menu, ParaJVE asks the user a file name where to store its state. This file can be loaded back later, when selecting the "Load..." menu item. Please note that you can only load a save file containing data for the game currently emulated (for instance, you can't load a MINESTORM save if you are running the BERZERK game).

The save/load file selector dialog embeds a preview frame that lets you see the content of the selected save file (cf. picture attachment). It also provides 3 different file filters :
  • "All Files" : list all the files in the current folder,
  • "ParaJVE save files" : list only the files containing valid ParaJVE save files
  • "ParaJVE compatible save files" : list only the files containing valid ParaJVE save files that match the game currently emulated.