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Refactor Snake and Snake2 into one common l0dable #143

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ea03ede
snake: fix playing field dimensions
dos1 Jan 3, 2016
4f27de9
snake: update the highscore variable on replay
dos1 Jan 3, 2016
3c1a4b8
Make it possible to quit by holding enter button down for one second.
BartDeWaal Dec 28, 2015
604f482
snake(2): refactor into one common l0dable
dos1 Jan 3, 2016
c1c474e
snake: make walls bolder in non-wrapping mode
dos1 Jan 3, 2016
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2 changes: 1 addition & 1 deletion l0dables/Makefile
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
C1D=cube.c1d blinky.c1d invaders.c1d mandel.c1d snake.c1d snake2.c1d bricks.c1d schedule.c1d ws2812b.c1d battery.c1d fire.c1d colorp.c1d tetris.c1d sysinfo.c1d colors.c1d 0xb.c1d
C1D=cube.c1d blinky.c1d invaders.c1d mandel.c1d snake.c1d bricks.c1d schedule.c1d ws2812b.c1d battery.c1d fire.c1d colorp.c1d tetris.c1d sysinfo.c1d colors.c1d 0xb.c1d

N1K=nick_scr0ll.n1k nick_w0rpcore.n1k nick_matrix.n1k nick_plain.n1k nick_invaders.n1k nick_anim.n1k nick_image.n1k nick_netz39.n1k nick_life.n1k nick_colplasm.n1k nick_ledbow.n1k

Expand Down
228 changes: 157 additions & 71 deletions l0dables/snake.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
********
* a snake clone for the r0ket
* created by Flori4n (DrivenHoliday) & MascH (CCCHB tent)
* snake II implementation by ElSjaako and OriginalSouth
***************************************/

#include <string.h>
Expand All @@ -14,6 +15,7 @@
#include <r0ketlib/print.h>
#include <r0ketlib/keyin.h>
#include <r0ketlib/select.h>
#include <rad1olib/systick.h>

#include "invfont.c"

Expand All @@ -23,10 +25,10 @@
#define SNAKE_DIM (3)
#define MIN_SPEED (25)
#define MAX_SPEED (3)
#define MIN_X 2
#define MAX_X (RESX-3)
#define MIN_Y 8
#define MAX_Y (RESY-2)
#define MIN_X 3
#define MAX_X (RESX-5)
#define MIN_Y 12
#define MAX_Y (RESY-5)
#define SIZE_X ((MAX_X-MIN_X)/SNAKE_DIM)
#define SIZE_Y ((MAX_Y-MIN_Y)/SNAKE_DIM)

Expand All @@ -35,6 +37,14 @@
#define UP 3
#define DOWN 1

//define how long you have to hold down the button to quit
#define QUIT_DELAY 1000

typedef enum {
SNAKE_STANDARD,
SNAKE_WRAPPING
} gametype_e;

struct pos_s {
int x,y;
};
Expand All @@ -48,7 +58,7 @@ static void reset();
static void next_level();
static void render_level();
static void draw_block();
static void handle_input();
static int handle_input();
static void death_anim();
static struct pos_s getFood(void);
static int hitWall();
Expand All @@ -57,70 +67,114 @@ static int hitSelf();
static void renderHighscore();
static int showHighscore();
static uint32_t highscore_get();
static char* highscore_filename();

int points = 0;
int highscore = 0;
gametype_e gametype = SNAKE_STANDARD;
struct snake_s snake = { NULL, 3, 0, MIN_SPEED, 2};
struct pos_s food;

void ram(void)
{
int c=0, pos=0,del=0;
while (1) {

struct pos_s tail[MAX_SNAKE_LEN];
snake.tail = tail;
int c=0, pos=0,del=0;

// load the highscore
highscore = highscore_get();
struct pos_s tail[MAX_SNAKE_LEN];
snake.tail = tail;

// initially reset everything
reset();
lcdClear();

while (1) {
if(!(++c % snake.speed)) {
handle_input();

pos = (snake.t_start+1) % MAX_SNAKE_LEN;
snake.tail[pos].x = snake.tail[snake.t_start].x;
snake.tail[pos].y = snake.tail[snake.t_start].y;

if(snake.dir == 0)
snake.tail[pos].x++;
else if(snake.dir == 1)
snake.tail[pos].y++;
else if(snake.dir == 2)
snake.tail[pos].x--;
else if(snake.dir == 3)
snake.tail[pos].y--;

snake.t_start = pos;

if (pos < snake.len) {
del = MAX_SNAKE_LEN - (snake.len - pos);
} else
del = pos - snake.len;
setTextColor(0xff,0b11100000);
DoString(0,10, " SNAKE");

// remove last, add first line
draw_block(snake.tail[del].x, snake.tail[del].y, 0xFF);
draw_block(snake.tail[pos].x, snake.tail[pos].y, 0b00011000);
setTextColor(0xff,0x00);
DoString(0,RESY/2-33, " Choose the");
DoString(0,RESY/2-25, " game type:");

// check for obstacle hit..
if (hitWall() || hitSelf()) {
death_anim();
if (showHighscore())
break;
reset();
} else if (hitFood())
next_level();
setTextColor(0xff,0x00);
DoString(0, RESY/2+10, " LEFT: standard");
DoString(0, RESY/2+18, " RIGHT: wrapping ");
DoString(0, RESY/2+26, " DOWN: quit ");

lcdDisplay();
lcdDisplay();

int key = getInputRaw();

while(1) {
key = getInputWait();
getInputWaitRelease();

if (key&BTN_DOWN) {
return;
} else if (key&BTN_LEFT) {
gametype = SNAKE_STANDARD;
break;
} else if (key&BTN_RIGHT) {
gametype = SNAKE_WRAPPING;
break;
}
}

// load the highscore
highscore = highscore_get();

// initially reset everything
reset();

while (1) {
if(!(++c % snake.speed)) {
if (handle_input()) { //handle_input returns 1 to quit
break;
}

pos = (snake.t_start+1) % MAX_SNAKE_LEN;
snake.tail[pos].x = snake.tail[snake.t_start].x;
snake.tail[pos].y = snake.tail[snake.t_start].y;

if(snake.dir == 0) {
snake.tail[pos].x++;
if(gametype == SNAKE_WRAPPING && snake.tail[pos].x>SIZE_X) snake.tail[pos].x=0;
} else if(snake.dir == 1) {
snake.tail[pos].y++;
if(gametype == SNAKE_WRAPPING && snake.tail[pos].y>SIZE_Y) snake.tail[pos].y=0;
} else if(snake.dir == 2) {
snake.tail[pos].x--;
if(gametype == SNAKE_WRAPPING && snake.tail[pos].x<0) snake.tail[pos].x=SIZE_X;
} else if(snake.dir == 3) {
snake.tail[pos].y--;
if(gametype == SNAKE_WRAPPING && snake.tail[pos].y<0) snake.tail[pos].y=SIZE_Y;
}

snake.t_start = pos;

del = pos - snake.len;
if (pos < snake.len) del += MAX_SNAKE_LEN;

// remove last, add first line
draw_block(snake.tail[del].x, snake.tail[del].y, 0xFF);
draw_block(snake.tail[pos].x, snake.tail[pos].y, 0b00011000);

// check for obstacle hit..
if (hitWall() || hitSelf()) {
death_anim();
if (showHighscore())
break;
highscore = highscore_get();
reset();
} else if (hitFood())
next_level();

lcdDisplay();
}

#ifdef SIMULATOR
delayms(50);
delayms(50);
#else
delayms(3);
delayms(3);
#endif
}
}
}

Expand All @@ -130,8 +184,8 @@ static struct pos_s getFood(void)
struct pos_s res;

tryagain:
res.x = (getRandom() % (SIZE_X-1)) + 1;
res.y = (getRandom() % (SIZE_Y-3)) + 3;
res.x = (getRandom() % (SIZE_X+1));
res.y = (getRandom() % (SIZE_Y+1));

for(i=0; i<snake.len; i++) {
pos = (snake.t_start < i) ? (MAX_SNAKE_LEN - (i-snake.t_start)) : (snake.t_start-i);
Expand All @@ -148,14 +202,22 @@ static void reset()

// setup the screen
lcdClear();
for (i=MIN_X; i<MAX_X; i++) {
lcdSetPixel(i,MIN_Y,0b000101011);
lcdSetPixel(i,MAX_Y,0b000101011);
for (i=MIN_X-2; i<MAX_X+2; i++) {
lcdSetPixel(i,MIN_Y-2,0b000101011);
lcdSetPixel(i,MAX_Y+2,0b000101011);
if (gametype != SNAKE_WRAPPING) {
lcdSetPixel(i,MIN_Y-1,0b000101011);
lcdSetPixel(i,MAX_Y+1,0b000101011);
}
}

for (i=MIN_Y; i<MAX_Y; i++) {
lcdSetPixel(MIN_X,i,0b000101011);
lcdSetPixel(MAX_X,i,0b000101011);
for (i=MIN_Y-2; i<MAX_Y+2; i++) {
lcdSetPixel(MIN_X-2,i,0b000101011);
lcdSetPixel(MAX_X+2,i,0b000101011);
if (gametype != SNAKE_WRAPPING) {
lcdSetPixel(MIN_X-1,i,0b000101011);
lcdSetPixel(MAX_X+1,i,0b000101011);
}
}

snake.speed = MIN_SPEED;
Expand All @@ -165,8 +227,6 @@ static void reset()

points = 0;

food = getFood();

// create snake in the middle of the field
snake.tail[0].x = SIZE_X/2;
snake.tail[0].y = SIZE_Y/2;
Expand All @@ -175,6 +235,8 @@ static void reset()
snake.tail[2].x = SIZE_X/2 +2;
snake.tail[2].y = SIZE_Y/2;

food = getFood();

// print initail tail
draw_block(snake.tail[0].x, snake.tail[0].y, 0b00011000);
draw_block(snake.tail[1].x, snake.tail[1].y, 0b00011000);
Expand All @@ -187,7 +249,9 @@ static void reset()
static void draw_block(int x, int y, int set)
{
x *= SNAKE_DIM;
x += MIN_X;
y *= SNAKE_DIM;
y += MIN_Y;

lcdSetPixel(x , y, set);
lcdSetPixel(x+1, y, set);
Expand Down Expand Up @@ -237,14 +301,15 @@ static void render_level()
// Dark Green
setTextColor(0xff,0b00011000);
}
DoString(0,0,points_string);
DoString(1,1,points_string);
setTextColor(0xff,0b00000011);
DoString(MAX_X-44,0,highscore_string);
DoString(MAX_X-44,1,highscore_string);
}

static void handle_input()
static int handle_input()
{
int key = getInputRaw(), dir_old = snake.dir;
static int quitWhen = 0;

if (key&BTN_UP && dir_old != 1)
snake.dir = 3;
Expand All @@ -254,15 +319,26 @@ static void handle_input()
snake.dir = 2;
else if (key&BTN_RIGHT && dir_old !=2)
snake.dir = 0;
else if (key&BTN_ENTER) {
if (quitWhen == 0) {
quitWhen = _timectr + QUIT_DELAY/SYSTICKSPEED;
} else if (_timectr > quitWhen) {
return 1; //indicate program should quit
}
return 0;
}
quitWhen = 0;
return 0; // program should continue running
}

static int hitWall()
{
return ( (snake.tail[snake.t_start].x*3 <= MIN_X)
|| (snake.tail[snake.t_start].x*3 >= MAX_X)
|| (snake.tail[snake.t_start].y*3 <= MIN_Y)
|| (snake.tail[snake.t_start].y*3 >= MAX_Y) ) ?
1 : 0;
if (gametype == SNAKE_WRAPPING) return false;

return ( (snake.tail[snake.t_start].x < 0)
|| (snake.tail[snake.t_start].x > SIZE_X)
|| (snake.tail[snake.t_start].y < 0)
|| (snake.tail[snake.t_start].y > SIZE_Y) );

}

Expand Down Expand Up @@ -300,9 +376,19 @@ static void death_anim()

}

static char* highscore_filename()
{
switch (gametype) {
case SNAKE_WRAPPING:
return "snake2.5cr";
default:
return "snake.5cr";
}
}

static bool highscore_set(uint32_t score)
{
writeFile("snake.5cr", &score , sizeof(uint32_t));
writeFile(highscore_filename(), &score , sizeof(uint32_t));

// old r0ket code to get highscore from the world
#if 0
Expand All @@ -323,7 +409,7 @@ static bool highscore_set(uint32_t score)
static uint32_t highscore_get()
{
uint32_t score = 0;
readFile("snake.5cr", &score, sizeof(score));
readFile(highscore_filename(), &score, sizeof(score));

// old r0ket code to send highscore to the world
#if 0
Expand Down Expand Up @@ -364,9 +450,9 @@ static void renderHighscore()
setTextColor(0xff,0b00000011);
DoString(RESX/2-4, RESY/2-2, IntToStr(highscore,6,0));
setTextColor(0xff,0x00);
DoString(0, RESY/2+18, " UP to play ");
DoString(0, RESY/2+18, " UP to play");
DoString(0, RESY/2+26, "RIGHT to reset HI ");
DoString(0, RESY/2+34, "DOWN to quit ");
DoString(0, RESY/2+34, " DOWN to quit ");

lcdDisplay();
}
Expand Down
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