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DX--Why wont this work?

Started by ECKILLER Jan 17, 2000 at 1:45 PM 3 replies 600+ views

Original Post

Jan 17, 2000 at 1:45 PM

Hi, I''m new to DX, and trying to o some sprites, heres the code that i''m having trouble to get to work, Also everything compiles ok and my color keys work. void Blt_Sprites() { RECT rect; // this is my background picture the size of the screen lpDDSBack->BltFast(0,0,arr_anime[0],NULL,DDBLTFAST_WAIT/DDBLTFAST_SRCCOLORKEY); // set the array to element 1 which is my character surface current_image = 1; // set source rct to the size of my picture, my characters // picture is 400x400 rect.left = 0; rect.top = 0; rect.bottom = 400; rect.right = 400; // blt the character to 200,200 lpDDSBack->BltFast(200,200,arr_anime[current_image],▭,DDBLTFAST_WAIT/DDBLTFAST_SRCCOLORKEY); lpDDSPrimary->Flip(0,DDFLIP_WAIT); } Ok here''s whats wierd, if i set the first 2 parameters to 0,0 on my second blit and the source rect to null it works fine. But my sprite is at 0,0. I can''t get it to work setting any other coordinates. Help please. Thanks in ad. Frank ECKILLER

SeanHowe

Jan 17, 2000 at 1:52 PM

One thing that looks wrong, you''re doing this: DDBLTFAST_WAIT/DDBLTFAST_SRCCOLORKEY
/ = divided by
I beleive you''re supposed to have / there, the bitwise OR operator

SeanHowe

Jan 17, 2000 at 1:53 PM

Ahhhhh, never mind, You did have that, the font this text is displayed in just doesn''t have a character for the bitwise or operator

trixter

Jan 17, 2000 at 3:01 PM

what screen resolution are you using? if you''re at 640x480 this won''t display at (200,200) because your sprite has a height of 400 and 200+400=600 which goes past 480. You have to use clipping to only display the visible section. Try blitting to (200,50) just to see if it works right.

ECKILLER

Jan 17, 2000 at 5:45 PM

That was it, i set it to 200,50 and it worked.

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