From f98dd6b3479d70465d87c6d794990d56ebb0e799 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Fri, 15 Mar 2013 16:27:24 +0100
Subject: Add score display

---
 CMakeLists.txt |   1 +
 snake.c        | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 117 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d31ff5e..ec6a3ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,7 @@ set_target_properties(snake.elf PROPERTIES
   LINK_FLAGS "-Wall -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums -Os -mmcu=${BOARD}"
   COMPILE_DEFINITIONS "F_CPU=${CLOCK}"
 )
+target_link_libraries(snake.elf m)
 
 add_custom_command(OUTPUT snake.hex COMMAND ${CMAKE_OBJCOPY} -O ihex -R .eeprom snake.elf snake.hex DEPENDS snake.elf)
 add_custom_target(snake ALL DEPENDS snake.hex)
diff --git a/snake.c b/snake.c
index c7f3d86..1b958c3 100644
--- a/snake.c
+++ b/snake.c
@@ -7,6 +7,83 @@
 #include <stdbool.h>
 
 
+#define NUMBER_WIDTH 3
+#define NUMBER_HEIGHT 7
+
+static const uint8_t NUMBERS[10][NUMBER_HEIGHT][NUMBER_WIDTH] = {
+	{
+		{1, 1, 1},
+		{1, 0, 1},
+		{1, 0, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+	},
+	{
+		{0, 0, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+	},
+	{
+		{1, 1, 1},
+		{0, 0, 1},
+		{1, 1, 1},
+		{1, 0, 0},
+		{1, 1, 1},
+	},
+	{
+		{1, 1, 1},
+		{0, 0, 1},
+		{1, 1, 1},
+		{0, 0, 1},
+		{1, 1, 1},
+	},
+	{
+		{1, 0, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+	},
+	{
+		{1, 1, 1},
+		{1, 0, 0},
+		{1, 1, 1},
+		{0, 0, 1},
+		{1, 1, 1},
+	},
+	{
+		{1, 1, 1},
+		{1, 0, 0},
+		{1, 1, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+	},
+	{
+		{1, 1, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+		{0, 0, 1},
+	},
+	{
+		{1, 1, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+	},
+	{
+		{1, 1, 1},
+		{1, 0, 1},
+		{1, 1, 1},
+		{0, 0, 1},
+		{1, 1, 1},
+	},
+};
+
+
 typedef struct _point_t {
   uint8_t x, y;
 } point_t;
@@ -25,6 +102,7 @@ static volatile bool start;
 static volatile uint16_t lfsr = 0xace1;
 
 static uint8_t dir;
+static uint8_t score;
 static point_t tail = {7, 4};
 
 #define HISTORY_MAX 128
@@ -94,6 +172,7 @@ static void reset(void) {
 	tail = (point_t){7, 4};
 	history_len = 0;
 	history_pos = 0;
+	score = 0;
 
 	unsigned i;
 	for (i = 0; i < 2; i++)
@@ -104,6 +183,39 @@ static void set_led(uint8_t x, uint8_t y, uint8_t val) {
 	LedSignSet(13-x, 8-y, val);
 }
 
+static void set_number(uint8_t x, uint8_t y, uint8_t val) {
+	uint8_t i, j;
+
+	for (i = 0; i < NUMBER_WIDTH; i++) {
+		for (j = 0; j < NUMBER_HEIGHT; j++) {
+			set_led(x+i, y+j, NUMBERS[val][j][i] ? 7 : 0);
+		}
+	}
+}
+
+static void show_score(uint8_t score) {
+	LedSignClear(7);
+	_delay_ms(50);
+	LedSignClear(6);
+	_delay_ms(50);
+	LedSignClear(5);
+	_delay_ms(50);
+	LedSignClear(4);
+	_delay_ms(50);
+	LedSignClear(3);
+	_delay_ms(50);
+	LedSignClear(2);
+	_delay_ms(50);
+	LedSignClear(1);
+	_delay_ms(50);
+	LedSignClear(0);
+	_delay_ms(50);
+
+	set_number(1, 2, (score/100)%10);
+	set_number(NUMBER_WIDTH+2, 2, (score/10)%10);
+	set_number(2*NUMBER_WIDTH+3, 2, score%10);
+}
+
 void kbd_handle(uint16_t code, bool make) {
 	if (!make)
 		return;
@@ -187,6 +299,7 @@ static bool step(void) {
 		return false;
 
 	if (points_equal(&pt, &q)) {
+		score++;
 		rand_q();
 		move(d, true);
 	}
@@ -218,6 +331,9 @@ int main() {
 
 		while (step())
 			_delay_ms(100);
+
+		_delay_ms(200);
+		show_score(score);
 	}
 
 	return 0;
-- 
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