• Announcements

    • khawk

      Download the Game Design and Indie Game Marketing Freebook   07/19/17

      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.

Archived

This topic is now archived and is closed to further replies.

dr-m

[java] lots of downloaded data

3 posts in this topic

I have this applet that loads a few images, and then processes a few of them. The loading is done one and one with a waitForID(n) between every file. But when I start the processing, more data is downloaded each time i go over my loop (it cuts out a tile from a Image to an int[]). The only time I notice this effect is when launching over a modem connection. But loading time is increased from <2 seconds to over 8 minutes! The data downloaded is about 5 times the expected. Does java request the whole tileset each time i reference it or what? It almost looks that way to me. / dr-m
0

Share this post


Link to post
Share on other sites
depends on how you''re "requesting" the image. Sounds like there''s a problem with your code, could you post some of it?
0

Share this post


Link to post
Share on other sites

Ok, here are the ciritcal parts of my code... I noticed something just after posting the msg last night, this bug *only* exists in IE5 (the exact version currently unknown)! When launching in NS4.75, this loop was not an issue, it just flew by it. I didn''t try it with appletviewer or NS6 but I''m gonna do that later today.

Im using this technique on some other gfx as well, and it causes the same hangup and unneeded data transfers. With the appletviewer I sometimes experience strange hangups while grabbing. It complains about "Premature end of JPEG-file" from time to time. Or it just hangs without any message at all.

My fullsource image is 480x384 (not all used yet) and tiles are 24x24. It''s stored as an 16,6kB JPEG image.



  
//===================== Mediatracker loading loop ========================

// this stuff seem to work just fine.


currentItem = 0;

for (int i=0; i<totalItem; i++)
{
url = new URL(getCodeBase(), "data/" + RN.fullImageList[i]);
imgBank[i] = getImage(url);
tracker.addImage(imgBank[i], i);
tracker.waitForID(i);

currentItem++;
}

// ....


loadTilesFromImage(imgBank[RN.IMG_TILESJUNGLE]);

// ....




//===================== loop grabbing my tiles ===========================

// this loop executes horribly slow on my 28k8 modem.


private void loadTilesFromImage(Image imgTiles)
{
int i,j,s;
Rect tile = new Rect();

for (s=0, i=0; i<3; i++) {
for (j=0; j<20; j++, s++) {
tile.setRect(j*tileSide,
i*tileSide,
j*tileSide+tileSide,
i*tileSide+tileSide);

tileBuf[s] = new Tile(s, tile, imgTiles);
}
}
}


//==================== constructor in Tile class =========================

// each tile is stored as an Int[]


public Tile(int i, Rect srcRect, Image srcImage)
{
no = Tile.INVALID;
tile = new int[srcRect.getWidth() * srcRect.getHeight()];
PixelGrabber pg = new PixelGrabber(srcImage,
srcRect.getTopX(), srcRect.getTopY(),
srcRect.getWidth(), srcRect.getHeight(),
tile, 0, 24);
try {
pg.grabPixels();
}
catch(Exception e) {
return;
}
no = i;
tileInfo = srcRect;
}



/ dr-m
0

Share this post


Link to post
Share on other sites