文件列表:

grass\CGrassPatchSceneNode.cpp (15833, 2007-03-19)
grass\CGrassPatchSceneNode.h (4234, 2007-03-19)
grass\CWindGenerator.h (2511, 2007-01-25)
grass\demo.exe (140288, 2007-06-28)
grass\Irrlicht.dll (506880, 2007-06-27)
grass\IWindGenerator.h (787, 2007-01-25)
grass\main.cpp (12685, 2007-03-19)
grass\media (0, 2007-06-28)
grass\media\detailmap3.jpg (111193, 2007-01-25)
grass\media\grass.png (979338, 2007-01-25)
grass\media\grass2.bmp (12342, 2007-01-25)
grass\media\terrain-grasscol.bmp (196662, 2007-01-25)
grass\media\terrain-grassmap.png (66845, 2007-01-25)
grass\media\terrain-heightmap.bmp (196662, 2007-01-25)
grass\media\terrain-texture.jpg (145155, 2007-01-25)

License/credits --------------- Grass Node by G Davidson Feb 2006 Originally based on Irrlicht's particle system source code by Nikolaus Gebhardt Uses Klasker's IWindGenerator Intro ----- The grass patch node is a small square of turf on your terrain. The idea is that you make some kind of a manager to spawn and kill them as you walk around. The demo uses a 10x10 grid of nodes, which store 3000 blades of grass each = overkill + memory hog. I plan on making a block manager that deals with creating and destroying lots of layers (terrain, grass, trees, world blocks), but I'm in no hurry to do this, so you'll have to make your own grass tile manager :P Instructions for use -------------------- This is the boring bit. I'll update this some other time :P Performance options ------------------- Theres a lot to gain (and lose) by tweaking the performance options. setDrawDistance This sets the distance to draw blades at. When a patch is in range, blades of grass within that square must be checked for distance from the camera - this is the reason the whole terrain isn't one big patch. setMaxDensity This sets the maximum number of blades of grass that can be drawn within the patch. It's probably a good idea to keep this set at the max - the number made in create(), as its a waste of memory otherwise. Remember that grass particles are currently uploaded to the card every frame, the more you send the more it hurts. setRefreshDelay This function sets how often the grass is updated. The default is 30ms, any more looks jerky. If might be an idea to tune this depending on the distance of the patch to the camera. If you're using IrrSpintz, hardware mesh buffers (sh|c|w)ould give a significant performance/drawdistance boost here. setWindRes This function sets how many wind sensors wide the wind grid is. The more there are, the nicer the wind effect, but the more it hurts your cpu. Default is a 5x5 grid. The manager could change this as you approach and retreat from a patch. To Do ----- Stick grass legs to terrain instead of middle = wider grass :) Binary interpolate wind position rather than linear interpolate Account for terrain position and rotation. changelog --------- 0.3.1 - 14th Mar 2007 No real changes, just updated it to work with Irrlicht 1.3 0.3 - 18th Feb 2006 shorter grass is stiffer, longer grass is more flexible renamed get/setMaxFPS to get/setRefreshDelay.. makes more sense i think demo code: changes wind speed and regularity (at last!) demo code: set/getRefreshDelay and wind resolution for performance 0.2.5 - 17th Feb 2006 Grass better aligned to terrain floor - thanks Xaron! Wind is now bilinear interpolated too 0.2.4 - 13th Feb 2006 constrained to heightmap size grass height and density controlled by grass map image 0.2.3 grass colour map colour difference between top and bottom of blades wind is now interpolated between grid more settings functions changed the create function so uncommon blades have highest priority 0.2.2 speed increase! grass and wind now only update every 30ms wind is rendered to a grid 0.2.1 new wind... thank you Klasker :) 0.2 faster grass generation - files are now optional :) 0.1.3 bounding box check ditched billboards, now blades have real positions fixed distance code 0.1.2 keyboard input fall off, changed scale 0.1 Initial version

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