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gameoflife.ino
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gameoflife.ino
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#include <stdint.h>
#include <LCD.h>
#include <SPI.h>
#define m 32
#define n 31
char main_grid[m][n];
char temp_grid[m][n];
void setup() {
SPI.setDataMode(SPI_MODE0);
SPI.setBitOrder(MSBFIRST);
SPI.begin();
Tft.lcd_init();
Tft.lcd_clear_screen(BLACK);
init_main_grid();
init_temp_grid();
set_r_pentonimo();
render_grid();
}
void loop() {
calculate_next_generation();
render_grid_fast();
}
void calculate_next_generation() {
for(uint8_t i=0; i<m; i++) {
for(uint8_t j=0; j<n; j++) {
temp_grid[i][j] = should_stay_alive_or_resurrect(i, j) ? '1': '0';
}
}
}
void render_grid() {
for (uint8_t i=0; i<m; i++)
for (uint8_t j=0; j<n; j++) {
main_grid[i][j] = temp_grid[i][j];
if(is_alive(i, j))
Tft.lcd_fill_rect(i*4 + 75, j*4+ 75, 4, 4, RED);
else
Tft.lcd_fill_rect(i*4 + 75, j*4+ 75, 4, 4, BLACK);
}
}
void render_grid_fast() {
for(uint8_t i=0; i<m; i++) {
for(uint8_t j=0; j<n; j++) {
boolean was_alive = is_alive(i, j);
main_grid[i][j] = temp_grid[i][j];
boolean resurrected = is_alive(i, j);
if(resurrected && !was_alive)
Tft.lcd_fill_rect_fast(i*4 + 75, j*4 + 75, 4, 4, RED);
if (!resurrected && was_alive)
Tft.lcd_fill_rect_fast(i*4 + 75, j*4 + 75, 4, 4, BLACK);
}
}
}
void init_main_grid() {
for (uint8_t i=0; i<m; i++)
for (uint8_t j=0; j<n; j++)
main_grid[i][j] = '0';
}
void init_temp_grid() {
for (uint8_t i=0; i<m; i++)
for (uint8_t j=0; j<n; j++)
temp_grid[i][j] = '0';
}
void set_r_pentonimo() {
temp_grid[m/2][n/2] = '1';
temp_grid[m/2][n/2+1] = '1';
temp_grid[m/2][n/2-1] = '1';
temp_grid[m/2-1][n/2] = '1';
temp_grid[m/2+1][n/2+1] = '1';
}
boolean should_stay_alive_or_resurrect(uint8_t i, uint8_t j) {
uint8_t live_neighbors = get_live_neighbors(i, j);
return (is_alive(i, j) && (live_neighbors == 2 || live_neighbors == 3)) || (live_neighbors == 3);
}
int get_live_neighbors(uint8_t i, uint8_t j) {
uint8_t live_neighbors = 0;
if (is_alive(i-1, j)) live_neighbors += 1;
if (is_alive(i+1, j)) live_neighbors += 1;
if (is_alive(i, j-1)) live_neighbors += 1;
if (is_alive(i, j+1)) live_neighbors += 1;
if (is_alive(i-1, j-1)) live_neighbors += 1;
if (is_alive(i-1, j+1)) live_neighbors += 1;
if (is_alive(i+1, j-1)) live_neighbors += 1;
if (is_alive(i+1, j+1)) live_neighbors += 1;
return live_neighbors;
}
boolean is_valid_index(uint8_t i, uint8_t j) {
return ((i>0) && (i<m) && (j>0) && (j<n));
}
boolean is_alive(uint8_t i, uint8_t j) {
return is_valid_index(i, j) && main_grid[i][j] == '1';
}