# HG changeset patch
# User John Tsiombikas <nuclear@member.fsf.org>
# Date 1426878218 -7200
# Node ID 363acf3e61d47b0fb7f3de7343a248ca44735f5f
# Parent  872e425f0e7f7102fffa9ed36b373899f3067f84
wha?

diff -r 872e425f0e7f -r 363acf3e61d4 avrgame.c
--- a/avrgame.c	Tue Sep 09 06:49:28 2014 +0300
+++ b/avrgame.c	Fri Mar 20 21:03:38 2015 +0200
@@ -1,3 +1,4 @@
+#include <string.h>
 #include <avr/io.h>
 #include <avr/interrupt.h>
 #include <util/delay.h>
@@ -21,17 +22,25 @@
 };
 
 void redraw(void);
+void draw_field(void);
+void putpixel(int x, int y, int c);
 /*int lcd_stream_write(char c, FILE *fp);*/
 /*FILE stream_lcd = FDEV_SETUP_STREAM(lcd_stream_write, NULL, _FDEV_SETUP_WRITE);*/
 
-static int bx, by, brot;
-static unsigned char fb[DM_WIDTH * DM_HEIGHT / 8];
+#define FB_SIZE		(DM_WIDTH * DM_HEIGHT / 8)
+static unsigned char fb[FB_SIZE];
+
+/* gameplay */
+static int bx = DM_WIDTH / 2, by = DM_HEIGHT / 2, brot;
+#define FIELD_WIDTH	10
+#define FIELD_HEIGHT 20
+static unsigned char field[FIELD_WIDTH][FIELD_HEIGHT];
 
 int main(void)
 {
 	/* stdout = stderr = &stream_lcd; */
-	DDRC = 0;	/* input */
-	PORTC = 0;	/* disable pull-ups */
+	DDRD = 0xf0;	/* lower nibble input */
+	PORTD = 0xf0;	/* disable 4 lower pull-ups */
 
 	/* enable pin change interrupts (PCINT2) */
 	PCICR = (1 << PCIE2);
@@ -39,11 +48,14 @@
 	PCMSK2 = 0xf;
 
 	dm_init();
+	dm_test();
+	for(;;);
 
 	sei();
 
 	for(;;) {
 		redraw();
+		_delay_ms(1);
 	}
 
 	return 0;
@@ -51,34 +63,86 @@
 
 void redraw(void)
 {
+	memset(fb, 0, FB_SIZE);
+	draw_field();
+
+	dm_copy(0, 0, fb, FB_SIZE);
 }
 
+#define HSPANS	6
+void draw_field(void)
+{
+	int i, j;
+	unsigned char *fbptr = fb;
+
+	/* draw borders */
+	memset(fbptr, 0xff, HSPANS * 2);	/* fill 2 full lines */
+	fbptr += HSPANS * 2;
+	fbptr[0] = 0x03; fbptr[HSPANS - 1] = 0xc0;
+	fbptr += HSPANS;
+	*fbptr++ = 0xfb;
+	for(i=0; i<HSPANS - 2; i++) {
+		*fbptr++ = 0xff;
+	}
+	*fbptr++ = 0xdf;
+
+
+	for(i=0; i<DM_HEIGHT - 4; i++) {
+		fbptr[0] = 0x0b;			/* left border flipped(11010000) */
+		fbptr[HSPANS - 1] = 0xd0;	/* right border flipped(00001011) */
+		fbptr += DM_WIDTH / 8;
+	}
+	return;
+
+	fbptr = fb;
+	for(i=0; i<FIELD_HEIGHT * 4; i++) {
+		int y = i / 4;
+
+		for(j=0; j<FIELD_WIDTH / 2; j++) {
+			int x = j * 2;
+			unsigned char span;
+			if(field[x][y]) span |= 0xf0;
+			if(field[x + 1][y]) span |= 0xf;
+			fbptr[j] = span;
+		}
+		fbptr += DM_WIDTH / 8;
+	}
+}
+
+void putpixel(int x, int y, int c)
+{
+	unsigned char *pptr = fb + y * DM_WIDTH / 8 + x / 8;
+	int bit = x % 8;
+	*pptr = (*pptr & ~bit) | ((c & 1) << bit);
+}
+
+
 ISR(PCINT2_vect)
 {
-	static unsigned char prev_st = 0xff;
-	unsigned char st = PINC;
-	unsigned char diff = st ^ prev_st;
+	static unsigned char prev_st;
+	unsigned char st, diff;
 
-	if((diff & (1 << BN_LEFT)) & ~st) {
+	st = PIND & 0xf;
+	diff = st ^ prev_st;
+	prev_st = st;
+
+	if(diff & (1 << BN_LEFT) & st) {
 		bx -= 1;
 	}
-	if((diff & (1 << BN_RIGHT)) & ~st) {
+	if(diff & (1 << BN_RIGHT) & st) {
 		bx += 1;
 	}
-	if((diff & (1 << BN_ROT)) & ~st) {
+	if(diff & (1 << BN_ROT) & st) {
 		brot = (brot + 1) % 4;
 	}
-	if((diff & (1 << BN_DROP)) & ~st) {
-		/* TODO */
+	if(diff & (1 << BN_DROP) & st) {
+		by -= 1;
 	}
-
-	prev_st = st;
 }
 
 #if 0
 int lcd_stream_write(char c, FILE *fp)
 {
-	/* TODO terminal shit handling */
 	return 0;
 }
 #endif
diff -r 872e425f0e7f -r 363acf3e61d4 dotmatrix.c
--- a/dotmatrix.c	Tue Sep 09 06:49:28 2014 +0300
+++ b/dotmatrix.c	Fri Mar 20 21:03:38 2015 +0200
@@ -44,8 +44,6 @@
 
 int dm_init(void)
 {
-	int vop;
-
 	DM_DDR |= PINMASK;	/* set used pins as outputs */
 	SET(DM_PORT, DM_PIN_CE);
 	SET(DM_PORT, DM_PIN_RST);
@@ -58,7 +56,7 @@
 	/* set Vop (???) */
 	start_send();
 	send(CMD, CMD_FUNCSET(FSET_EXTENDED));
-	send(CMD, CMD_EXT_VOP(80));
+	send(CMD, CMD_EXT_VOP(78));
 
 	/* select function set (vertical addressing, basic set) */
 	send(CMD, CMD_FUNCSET(FSET_VERTICAL | FSET_BASIC));