51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
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/*
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Unpacks a RLE-compressed nametable+attribute table into VRAM.
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Also uses the pal_bright() function to fade in the palette.
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*/
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#include "neslib.h"
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extern const byte climbr_title_pal[16];
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extern const byte climbr_title_rle[];
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// link the pattern table into CHR ROM
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//#link "chr_generic.s"
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// link title screen palette and RLE nametable
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//#link "climbr_title.s"
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void fade_in() {
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byte vb;
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for (vb=0; vb<=4; vb++) {
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// set virtual bright value
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pal_bright(vb);
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// wait for 4/60 sec
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ppu_wait_frame();
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ppu_wait_frame();
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ppu_wait_frame();
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ppu_wait_frame();
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}
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}
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void show_title_screen(const byte* pal, const byte* rle) {
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// disable rendering
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ppu_off();
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// set palette, virtual bright to 0 (total black)
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pal_bg(pal);
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pal_bright(0);
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// unpack nametable into the VRAM
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vram_adr(0x2000);
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vram_unrle(rle);
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// enable rendering
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ppu_on_all();
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// fade in from black
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fade_in();
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}
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void main(void)
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{
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show_title_screen(climbr_title_pal, climbr_title_rle);
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while(1);//do nothing, infinite loop
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}
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