int main (void)
{
TC_init();
interrupt_init();
USART_init();
DDRA = 0b00000001; //set direction of PORTA, A0 is output for speaker
sei(); // turn on interrupts
while (1)
{
if( signal == 2 )//Once signaled that we have enough samples, we calculate the frequency
{
duration = total / sample; //Find average duration
freq = (unsigned int)(99990ul / (unsigned long)duration); //calculate frequency
//If hit was valid, take away health from player and go into method that plays appropriate sounds
if(freq > 200 && freq < 260){
health -= 30;
playSound(freq);
}
signal = 0;
total = 0;
sample = 0;
}
}
return 0;
}
void SPR_init(u16 cacheSize)
{
u16 index;
u16 size;
// already initialized --> end it first
if (SPR_isInitialized()) SPR_end();
// alloc cache structure memory
VDPSpriteCache = MEM_alloc(SPRITE_CACHE_SIZE * sizeof(VDPSprite));
size = cacheSize?cacheSize:384;
// get start tile index for sprite cache (reserve VRAM area just before system font)
index = TILE_FONTINDEX - size;
// init tile cache engine if needed
TC_init();
// and create a tile cache for the sprite
TC_createCache(&tcSprite, index, size);
}
