mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-17 11:05:58 +00:00
50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
|
|
// this example code unpacks a RLE'd nametable into the VRAM
|
|
// you can create the source data using NES Screen Tool
|
|
|
|
#include "neslib.h"
|
|
|
|
extern const byte climbr_title_pal[16];
|
|
extern const byte climbr_title_rle[];
|
|
|
|
// link the pattern table into CHR ROM
|
|
//#link "chr_generic.s"
|
|
|
|
// link title screen palette and RLE nametable
|
|
//#link "climbr_title.s"
|
|
|
|
|
|
void fade_in() {
|
|
byte vb;
|
|
for (vb=0; vb<=4; vb++) {
|
|
// set virtual bright vaule
|
|
pal_bright(vb);
|
|
// wait for 4/60 sec
|
|
ppu_wait_frame();
|
|
ppu_wait_frame();
|
|
ppu_wait_frame();
|
|
ppu_wait_frame();
|
|
}
|
|
}
|
|
|
|
void show_title_screen(const byte* pal, const byte* rle) {
|
|
// disable rendering
|
|
ppu_off();
|
|
// set palette, virtual bright to 0 (total black)
|
|
pal_bg(pal);
|
|
pal_bright(0);
|
|
// unpack nametable into the VRAM
|
|
vram_adr(0x2000);
|
|
vram_unrle(rle);
|
|
// enable rendering
|
|
ppu_on_all();
|
|
// fade in from black
|
|
fade_in();
|
|
}
|
|
|
|
void main(void)
|
|
{
|
|
show_title_screen(climbr_title_pal, climbr_title_rle);
|
|
while(1);//do nothing, infinite loop
|
|
}
|