Merick has dropped by our PSP forums today to inform us about the latest update to his 2D tile map editor, LuMM (Lua Map Maker). This PSP application boasts of map-editing functions on three layers: Ground layer (the basic map area); Object layer; and Overlay layer (for images the players can walk behind).

Using Soulkiller's mod, Merick's LuMM v0.5 is now a standalone app and thus can be installed directly to your PSP without the aid of Lua Player. But that's just the tip of the iceberg, or in mapping terms, just a scratch from the Ground layer. Here's the rest of the changelog straight from Merick's readme file:

• small change in control layout for menus - all menus now use start button to accept selection
• my previous method of referencing tile image was inadequate, any changes to the files in the tile folder would completely alter the order in which the images were referenced. To fix this, I've now made it so that the tile images are referenced by the image filenames.
• I've also made the tile loading function more intelligent,  it will now only attempt to load files that actually are images only .jpg and .png are
• Added a view checking function to the map base layer so that it only blits the tiles that are actually inside the current viewing area
• added a description of the map table format to this readme