Alpha Mapped Sprites
Blitz3D Forums/Blitz3D Beginners Area/Alpha Mapped Sprites
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| Hello, Firstly I am new to Blitz3D so my appologies for being a dunse. I am trying to write a fairly simple game to start with but am having difficulty with alpha mapping and sprites. I have created an explosion animation as a series of .bmp files with a black background and I would like the explosions to fade away, the images fade gradually to black. I am using PSP7 to create my images so transparency is very difficult, particularly gradual transparency. I have found two commands in Blitz that I would think effect the alpha of sprites, the first and most obvious (entityAlpha) seems to fail completely though (GeForce2 MX - not latest drivers as they seem a little flakey with DX9a). The second command was EntityAutoFade, however this did not fade out the black very well. I have made a screenshot of both fades in action:  I am loading the cells of animation as a brush with the masked parameter: expBrush(ex)=LoadBrush("Explosion/dth"+Str(ex)+".bmp",4) How should I go about making the explosions fade out nicely without the solid black areas please? |
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| Oh my god I really am a dunse ! I read my post then realised what I was doing wrong ! loadBrush("filename",2) all sorted :) |
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| Heh :) |
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| Also, remember that transparency can be set within blitz, for your textures. I wrote a couple of functions for this. http://www.blitzbasic.com/Community/posts.php?topic=33427 |
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| Andy: If you catch your own error before anybody else, then you are not a dunse! Sometimes, as programmers, we just need to see code from a different perspective, like posting it, to get past the problem. Cheers! |
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