//////////////////////////////////////////////////////////////////////
// Put an ascii-encoded string int VRAM
//////////////////////////////////////////////////////////////////////
void __fastcall__ vram_puts(unsigned char x, unsigned char y, const char *str)
{
char ch;
vram_adr(NTADR(x, y));
while((ch=*str++) != 0) {
vram_put(ch-0x20);
}
}
//////////////////////////////////////////////////////////////////////
// Set up the playfield
//////////////////////////////////////////////////////////////////////
void playfield_init(unsigned char rows)
{
vram_adr(0x2020);
for(i=0; i<32; i++) {
vram_put(BORDER_BLOCK);
}
vram_put(BORDER_BLOCK);
for(i=0; i<30; i++) {
vram_put(0);
}
vram_put(BORDER_BLOCK);
for(j=0; j<26; j++) {
vram_put(BORDER_BLOCK);
for(i=0; i<15; i++) {
if (j<rows) {
vram_put(BRICK_L);
vram_put(BRICK_R);
bricks[16+16*j + i] = rows-j;
} else {
vram_put(0);
vram_put(0);
}
}
vram_put(BORDER_BLOCK);
}
vram_puts(10, 28, "SCORE 000000");
vram_adr(0x23c0);
for(j=0; j<16; j+=2) {
col = j & 0x3;
col |= ((j+1) & 0x3) << 4;
col |= col << 2;
for(i=0; i<8; i++) {
vram_put(col);
}
}
}
void title_screen(void)
{
scroll(-8,240);//title is aligned to the color attributes, so shift it a bit to the right
unrle_vram(title_nam,0x2000);
vram_adr(0x2800);//clear second nametable, as it is visible in the jumping effect
vram_fill(0,1024);
pal_bg(palTitle);
pal_bright(4);
ppu_on_bg();
delay(20);//delay just to make it look better
iy=240<<FP_BITS;
dy=-8<<FP_BITS;
frame_cnt=0;
wait=160;
bright=4;
while(1)
{
ppu_waitnmi();
scroll(-8,iy>>FP_BITS);
if(pad_trigger(0)&PAD_START) break;
iy+=dy;
if(iy<0)
{
iy=0;
dy=-dy>>1;
}
if(dy>(-8<<FP_BITS)) dy-=2;
if(wait)
{
--wait;
}
else
{
pal_col(2,(frame_cnt&32)?0x0f:0x20);//blinking press start text
++frame_cnt;
}
}
