RasterSoft Retro Ramblings

I changed to a 16 bit blitter which fixed the non-transparent issues. Sound effects are also implemented, but only one can be played at a time and starting a new sound effects stops the last one. Music is not implemented, as midi is the only supported music format. There also is no documented way of creating a sound buffer that can notify the game when more sound data is needed.

The new version can be downloaded from the same location:

Sunplus 8000 Worm Warrior

Thanks to AleMaxx and Triple Oxygen for their code. The Sunplus port was developed using libgame and based on the keydemo sources, and Triple Oxygen’s audio demo.

I added the following to the gfx_types.h header file to create a 16 bit bitmap:

#define IMG_TYPE_16BPP 0

… created the bitmap using:

uint8_t bitmapID;
 
gfx_loadimg_t  loadImg;
 
uint16_t pImageBuffer = new uint16_t[SCREENWIDTH * SCREENHEIGHT];
 
loadImg.data = pImageBuffer;
loadImg.width = SCREENWIDTH;
loadImg.height = SCREENHEIGHT;
loadImg.img_type = IMG_TYPE_16BPP;
loadImg.unk2 = 0;
loadImg.pal_data = NULL;
loadImg.pal_size = 0;
loadImg.unk3 = 0x80;
 
gfx_load_image(&loadImg, &bitmapID);

… and blitted the bitmap to the screen using:

gfx_point2d_t pos;
gfx_rect_t rect;
 
pos.x = 0;
pos.y = 0;
rect.x = 0;
rect.y = 0;
rect.width = SCREENWIDTH;
rect.height = SCREENHEIGHT;
 
gfx_set_colorrop(COLOR_ROP_TRANSP);
gfx_bitblt(bitmapID, &rect, &pos);
 
gfx_flush();
gfx_paint();

The created 16 bit buffer is in RGB565 format, where:

Full red is 0xF800

Full green is 0x07E0

Full blue is 0x001F

And white is 0xFFFF