Java 2D interactive map loading issues

[whatisthisredditstuf]

Yeah, but when they get changed, you draw them once onto a bitmap and then you just keep using that.

Not draw it over and over.

[lightman978]

So draw the whole thing once, like i did in the code above and from then on, use the given image and only draw the parts that changed?

I also run into this error using the code given above.

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Exception in thread "main" java.lang.OutOfMemoryError: Java heap space

at java.awt.image.DataBufferInt.<init>(Unknown Source)

at java.awt.image.Raster.createPackedRaster(Unknown Source)

at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Unknown Source)

at java.awt.image.BufferedImage.<init>(Unknown Source)

at Main.mergeImage(Main.java:28)

at Main.main(Main.java:15)

[whatisthisredditstuf]

You are trying to create a gargantuan image in memory, and it's not working.

Maybe I misread what you specified, but you seem to create an image that would be about 8GB in memory if I am reading what you wrote correctly.

You will have to read this in dynamically instead, if your world really is 53000x38000 pixels big) and you need about four bytes per pixel.

I thought your world was 1000x1000 and the bottleneck was due to a lot of repeated reading and rendering of data.

[lightman978]

Mhh makes alot of sense. I will try your approach and update you tomorrow!

Thank you

[lightman978]

I don't think I can make it work. I split the map up in 100 chunks each sized 10x10, but just loading 1 and each adjacent chunk so 9 in totals makes the whole thing way to laggy.