hendrik
/
wordclock
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
Browse Source

converted bitstuffing algorithms to native borg frame buffer format, saving 124 bytes

feature/2015
Christian Kroll 14 years ago
parent
07c9d27b75
commit
12a8e94db4
1 changed files with 148 additions and 157 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 131
      animations/gameoflife.c

131
animations/gameoflife.c
View File

@ -23,7 +23,7 @@
#define XSIZE UNUM_COLS
#define YSIZE UNUM_ROWS
// optimizing for 8 bit archs while retaining compatibility with dimensions >255
// optimizing for 8 bit archs while retaining compatibility with dimensions >127
#if UNUM_COLS < 128 && UNUM_ROWS < 128
typedef uint8_t coord_t;
#else
@ -69,7 +69,9 @@ typedef unsigned int coord_t;
/******************************************************************************/
/******************************************************************************/
enum cell_e {dead=0, alive=1};
enum cell_e {
dead = 0, alive = 1
};
#ifdef NDEBUG
typedef uint8_t cell_t;
#else
@ -81,45 +83,41 @@ enum cell_e {dead=0, alive=1};
#define FIELD_XSIZE XSIZE
#define FIELD_YSIZE YSIZE
typedef cell_t field_t[FIELD_XSIZE][FIELD_YSIZE];
typedef cell_t field_t[FIELD_YSIZE][FIELD_XSIZE];
/******************************************************************************/
void setcell(field_t pf, coord_t x, coord_t y, cell_t value) {
pf[(x+FIELD_XSIZE)%FIELD_XSIZE][(y+FIELD_YSIZE)%FIELD_YSIZE] = value;
pf[(y+FIELD_YSIZE) % FIELD_YSIZE][(x+FIELD_XSIZE) % FIELD_XSIZE] = value;
}
/******************************************************************************/
cell_t getcell(field_t pf, coord_t x, coord_t y) {
return pf[(x+FIELD_XSIZE)%FIELD_XSIZE][(y+FIELD_YSIZE)%FIELD_YSIZE];
return pf[(y+FIELD_YSIZE) % FIELD_YSIZE][(x+FIELD_XSIZE) % FIELD_XSIZE];
}
#else /* BITSTUFFED */
#define FIELD_XSIZE ((XSIZE+7)/8)
#define FIELD_XSIZE LINEBYTES
#define FIELD_YSIZE YSIZE
typedef uint8_t field_t[FIELD_XSIZE][FIELD_YSIZE];
typedef uint8_t field_t[FIELD_YSIZE][FIELD_XSIZE];
/******************************************************************************/
void setcell(field_t pf, coord_t x, coord_t y, cell_t value) {
uint8_t t;
t = pf[x/8][y];
if(value==alive){
t |= 1<<(x&7);
if (value != dead) {
pf[y][x / 8] |= shl_table[x & 7];
} else {
t &= ~(1<<(x&7));
pf[y][x / 8] &= ~shl_table[x & 7];
}
pf[x/8][y] = t;
}
/******************************************************************************/
static cell_t getcell(field_t pf, coord_t x, coord_t y) {
return ((pf[x/8][y])&(1<<(x&7)))?alive:dead;
return ((pf[y][x / 8]) & (shl_table[x & 7])) ? alive : dead;
}
#endif
@ -131,8 +129,7 @@ uint8_t countsurroundingalive(field_t pf, coord_t x, coord_t y){
x += XSIZE;
y += YSIZE;
uint8_t i, ret = 0;
for (i = 8; i--;)
{
for (i = 8; i--;) {
// getcell(...) returns either 0 or 1
ret += getcell(pf, (x + offset[i+2]) % XSIZE, (y + offset[i]) % YSIZE);
}
@ -145,8 +142,8 @@ uint8_t countsurroundingalive(field_t pf, coord_t x, coord_t y){
void nextiteration(field_t dest, field_t src) {
coord_t x, y;
uint8_t tc;
for(y=0; y<YSIZE; ++y){
for(x=0; x<XSIZE; ++x){
for (y = YSIZE; y--;) {
for (x = XSIZE; x--;) {
tc = countsurroundingalive(src, x, y);
switch (tc) {
// case 0:
@ -172,7 +169,12 @@ void nextiteration(field_t dest, field_t src){
/******************************************************************************/
void printpf(field_t pf){
#ifdef BITSTUFFED
static void pfprint(field_t pf) {
memcpy(pixmap[NUMPLANE - 1], pf, sizeof(field_t));
}
#else
void pfprint(field_t pf) {
coord_t x,y;
for(y=YSIZE; y--;) {
for(x=XSIZE; x--;) {
@ -180,31 +182,22 @@ void printpf(field_t pf){
}
}
}
#endif
/******************************************************************************/
void pfcopy(field_t dest, field_t src){
coord_t x,y;
for(y=YSIZE; y--;){
for(x=XSIZE; x--;){
setcell(dest,x,y,getcell(src,x,y));
}
}
static void pfcopy(field_t dest, field_t src) {
memcpy(dest, src, sizeof(field_t));
}
/******************************************************************************/
#ifndef BITSTUFFED
uint8_t pfcmp(field_t dest, field_t src){
coord_t x,y;
for(y=YSIZE; y--;){
for(x=XSIZE; x--;){
if (getcell(src,x,y) != getcell(dest,x,y))
return 1;
}
}
return 0;
static int pfcmp(field_t dest, field_t src) {
return memcmp(dest, src, sizeof(field_t));
}
#ifndef BITSTUFFED
/******************************************************************************/
uint8_t pfempty(field_t src) {
@ -217,34 +210,22 @@ uint8_t pfempty(field_t src){
}
return 1;
}
#else
uint8_t pfcmp(field_t dest, field_t src){
coord_t x,y;
for(y=0; y<FIELD_YSIZE; ++y){
for(x=0; x<FIELD_XSIZE; ++x){
if (src[x][y] != dest[x][y])
return 1;
}
}
return 0;
}
/******************************************************************************/
uint8_t pfempty(field_t src) {
coord_t x, y;
for (y = 0; y < FIELD_YSIZE; ++y) {
for (x = 0; x < FIELD_XSIZE; ++x) {
if (src[x][y]!=0)
if (src[y][x] != 0)
return 0;
}
}
return 1;
}
#endif
/******************************************************************************/
void insertglider(field_t pf) {
@ -260,24 +241,39 @@ void insertglider(field_t pf){
/******************************************************************************/
int gameoflife(){
static void pfinit(field_t pf)
{
coord_t x, y;
#ifndef BITSTUFFED
for (y = YSIZE; y--;) {
for (x = XSIZE; x--;) {
setcell(pf, x, y, (random8() & 1) ? alive : dead);
}
}
#else
for (y = 0; y < FIELD_YSIZE; ++y) {
for (x = 0; x < FIELD_XSIZE; ++x) {
pf[y][x] = random8();
}
}
#endif
}
/******************************************************************************/
void gameoflife() {
DEBUG_BYTE(0,0); // set debug bytes to zero
DEBUG_BYTE(1,0);
field_t pf1, pf2;
field_t ldbuf[LOOP_DETECT_BUFFER_SIZE] = {{{0}}}; // loop detect buffer
uint8_t ldbuf_idx = 0;
coord_t x,y;
uint16_t cycle;
//start:
/* initalise the field with random */
for(y=YSIZE; y--;){
for(x=XSIZE; x--;){
setcell(pf1,x,y,(random8()&1)?alive:dead);
}
}
/* initialize the field with random */
pfinit(pf1);
#ifdef GLIDER_TEST
/* initialise with glider */
/* initialize with glider */
for(y=YSIZE; y--;) {
for(x=XSIZE; x--;) {
setcell(pf1, x, y, dead);
@ -287,14 +283,13 @@ int gameoflife(){
#endif
/* the main part */
printpf(pf1);
pfprint(pf1);
for (cycle = 1; cycle < GOL_CYCLES; ++cycle) {
DEBUG_BYTE(0,(uint8_t)(GOL_CYCLES-cycle)&0xff);
DEBUG_BYTE(1, SREG);
DEBUG_BYTE(0, (uint8_t)(GOL_CYCLES-cycle) & 0xff); DEBUG_BYTE(1, SREG);
wait(GOL_DELAY);
pfcopy(pf2, pf1);
nextiteration(pf1, pf2);
printpf(pf1);
pfprint(pf1);
/* loop detection */
if (!pfcmp(pf1, pf2)) {
insertglider(pf1);
@ -302,7 +297,7 @@ int gameoflife(){
}
if (pfempty(pf1)) {
/* kill game */
return 0;
return;
}
/* */
uint8_t i;
@ -314,9 +309,5 @@ int gameoflife(){
}
pfcopy(ldbuf[ldbuf_idx], pf1);
ldbuf_idx = (ldbuf_idx + 1) % LOOP_DETECT_BUFFER_SIZE;
}
return 0;
}

Write Preview
Loading…
Cancel
Save