Working on lazyNES. Adding sprite 0 hit test.

src/test/kc/complex/lazynes/spr0hit.c

@@ -0,0 +1,68 @@
+// lazyNES spite 0 hit demo. Demonstrates sprite 0 raster NMI with different scroll values
+  // lazyNES - As lazy as possible NES hardware support library for vbcc6502
+ // (happily cooperates with Shiru's famitone2 replay code)
+// V1.0, 'Lazycow 2020
+
+// Ported to KickC 2020 by Jesper Gravgaard 
+// Original Source VBCC alpha 2 http://www.ibaug.de/vbcc/vbcc6502_2.zip
+
+#pragma target(nes)
+#pragma emulator("java -jar c:/c64/Nintaco/Nintaco.jar")
+#include "lazynes.h"
+
+
+int lnMain() {
+
+	static const ubyte bgColors[]={45,33,2};
+	static const ubyte bubblesPal[]={ 0, 37,22,5, 0, 42,26,10, 0, 33,18,3 };
+	static const ubyte bubbles[]={ // x-offset, y-offset, tile, palette+flags
+		0,0,7,0,  8,0,9,0,  128, // 16x16, red,   offset 0
+		0,0,7,1,  8,0,9,1,  128, // 16x16, green, offset 9
+		0,0,7,2,  8,0,9,2,  128, // 16x16, blue,  offest 18
+		0,4,11,0,128, // 8x8, red,   offset 27 
+		0,4,11,1,128, // 8x8, green, offset 32
+		0,4,10,2,128, // 8x8, blue,  offset 37
+	},
+	bubbleTab[]={0,27,9,32,18,37}; // start offsets in bubbles[]
+
+	static const ubyte bubble0[] = { 0,4,10,2,128 }; // x-offset, y-offset, tile, palette+flags
+
+	ubyte i;
+	uword hScroll=0;
+	sbyte hVel=0, hDir=1;
+
+	lnSync(lfBlank); // blank screen to enable lnPush() usage
+	lnPush(lnBackCol,3,bgColors); // set background colors
+	lnPush(lnSprPal0,3,&bubblesPal[1]); // set sprite colors
+	lnPush(lnSprPal1,3,&bubblesPal[5]);
+	lnPush(lnSprPal2,3,&bubblesPal[9]);
+	//TODO: lnPPUCTRL|=32; // Select 8x16 sprites; has to be set after calling lnSync()!
+	
+	{
+		static const ubyte g1[]={1}, g2[]={2,3,4,5}, g3[]={6,7,8,9};
+		ubyte x;
+		// draw a line
+		i=2;  for (x=0;x<32;x+=1) lnPush(lnNameTab0+((uword)i<<5)+x,1,g1);
+		// draw some diamond shapes
+		for (i=8;i<=24;i+=4) for (x=0;x<4;x+=1) {
+			lnPush(lnNameTab0+((uword)i<<5)+12+x*4,4,g2);
+			lnPush(lnNameTab0+32+((uword)i<<5)+12+x*4,4,g3);
+		}
+	}
+
+	while(1) {
+		lnScroll(0,0); // reset scrolling offsets of area above split
+		//lnScroll(hScroll>>6,32); // set scrolling offsets of area below split
+		hVel+=hDir;  if (hVel>64 || hVel<-64) hDir=-hDir;
+		hScroll+=hVel;
+		
+		// add 1st sprite (SPR0) at a fixed position on top of background blocks
+		// mandatory for the SPR0HIT check later with lnSync(lfSplit)
+		lnAddSpr(&bubbles[bubbleTab[5]],16,16);
+		//TODO: lnSpr0Wait=55; // delay the set of scrolling registers a bit
+		
+		lnSync(lfSplit); // sync with vblank, activate SPR0HIT splitscreen
+	}
+
+	return 0;
+}