game intro screens
April 28, 2002 05:34 AM
ok, i finishing the tetris soon, if not for this old problem.
from TOTWGPG, there is this Copy_Screen() which is used in the
intro for its outpost demo.
but as usual,its for 8bit, and there are no updates for a 24bit
one.
but this function really is similar to the Draw_Bitmap().
there is a Draw_Bitmap16() for 24bit bitmaps.
currently, i thought of 3 possible solutions, but dunno how to
implement them.
1) using create_bitmap then load_image_bitmap16 in game_init()
2) using draw_bitmap16 in game_init()
3) update the Copy_Screen() to 24bit
i would be most appreciated if u had created game intro screens
using any of the above solutions, pls teach mi.
i seem to be missing something but dunno wat.
thx!
208
April 28, 2002 05:42 AM
Why not have a look at how these functions work and write your own one to do what you want?
Helpful links:
How To Ask Questions The Smart Way | Google can help with your question | Search MSDN for help with standard C or Windows functions
Helpful links:
How To Ask Questions The Smart Way | Google can help with your question | Search MSDN for help with standard C or Windows functions
April 28, 2002 05:50 AM
well, i thought of that.
i tried to modify the Copy_Screen() to 24bit but it turned out
to be similar to the Draw_Bitmap16(), which it didnt work.
this is wat i did(in GAME_INIT),
i was wondering, if copy_screen() is similar to draw_bitmap16()
then why dun i just use draw_bitmap16(),
which i did, as above, din work!
i oso wonder if there is a problem,
if its done in the primary buffer, in game_init.
i tried to modify the Copy_Screen() to 24bit but it turned out
to be similar to the Draw_Bitmap16(), which it didnt work.
this is wat i did(in GAME_INIT),
void Do_Intro(void){// the worlds simplest intro// clear out buffersDDraw_Fill_Surface(lpddsback, 0);DDraw_Fill_Surface(lpddsprimary, 0);// draw in logo screenLoad_Bitmap_File(&bitmap24bit, "elven.bmp");// copy the bitmap to primary bufferDDraw_Lock_Primary_Surface();Draw_Bitmap16(&elven,primary_buffer, primary_lpitch, 0);DDraw_Unlock_Primary_Surface();// unload bitmap fileUnload_Bitmap_File(&bitmap24bit);Sleep(3000);// transition to black//Screen_Transitions(SCREEN_DARKNESS,NULL,0);// clear out buffersDDraw_Fill_Surface(lpddsback, 0);DDraw_Fill_Surface(lpddsprimary, 0);//game title----------------------------------------------------------Load_Bitmap_File(&bitmap24bit, "etris.bmp");// copy the bitmap to primary bufferDDraw_Lock_Primary_Surface();Draw_Bitmap16(&etris,primary_buffer, primary_lpitch, 0);DDraw_Unlock_Primary_Surface();// unload bitmap fileUnload_Bitmap_File(&bitmap24bit);Sleep(3000);// transition to black//Screen_Transitions(SCREEN_DARKNESS,NULL,0);// clear out buffersDDraw_Fill_Surface(lpddsback, 0);DDraw_Fill_Surface(lpddsprimary, 0); } // end Do_Intro i was wondering, if copy_screen() is similar to draw_bitmap16()
then why dun i just use draw_bitmap16(),
which i did, as above, din work!
i oso wonder if there is a problem,
if its done in the primary buffer, in game_init.
April 28, 2002 05:54 AM
this is the draw_bitmap16()
int Draw_Bitmap16(BITMAP_IMAGE_PTR source_bitmap,UCHAR *dest_buffer, int lpitch, int transparent){// this function draws the bitmap onto the destination memory surface// if transparent is 1 then color 0 (8bit) or 0.0.0 (16bit) will be transparent// note this function does NOT clip, so be carefull!!!// test if this bitmap is loadedif (!(source_bitmap->attr & BITMAP_ATTR_LOADED)) return(0); USHORT *dest_addr, // starting address of bitmap in destination *source_addr; // starting adddress of bitmap data in source USHORT pixel; // used to hold pixel value int index, // looping vars pixel_x, lpitch_2 = lpitch >> 1; // lpitch in USHORT terms // compute starting destination address dest_addr = ((USHORT *)dest_buffer) + source_bitmap->y*lpitch_2 + source_bitmap->x; // compute the starting source address source_addr = (USHORT *)source_bitmap->buffer; // is this bitmap transparent if (transparent) { // copy each line of bitmap into destination with transparency for (index=0; index<source_bitmap->height; index++) { // copy the memory for (pixel_x=0; pixel_x<source_bitmap->width; pixel_x++) { if ((pixel = source_addr[pixel_x])!=0) dest_addr[pixel_x] = pixel; } // end if // advance all the pointers dest_addr += lpitch_2; source_addr += source_bitmap->width; } // end for index } // end if else { // non-transparent version // copy each line of bitmap into destination int source_bytes_per_line = source_bitmap->width*2; for (index=0; index < source_bitmap->height; index++) { // copy the memory memcpy(dest_addr, source_addr, source_bytes_per_line); // advance all the pointers dest_addr += lpitch_2; source_addr += source_bitmap->width; } // end for index } // end else // return success return(1);} // end Draw_Bitmap16 This topic is closed to new replies.
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