bridge.cpp

/*
 * Bridge from JS into the cellmap computation code in Wasm
 */

#include <gameoflife.h>
#include <constants.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <cstring>
/**
 * A struct that manages our instantiation of
 * the game of life
 */
typedef struct {
    cellmap       *cm;    /** holds the instance of the cellmap */
    unsigned char *cells;       /** holds the cell vals for current iteration */
} GOL_Instance;
/**
 * Constructor for the game of life engine
 */
GOL_Instance *
GOL_Instance_new() {
    GOL_Instance *gol;
    gol = (GOL_Instance *)malloc(sizeof *gol);
    if (gol) {
        memset(gol, 0, sizeof *gol);
    }
    gol->cm = new_cellmap();
    return gol;
}
/**
 * Method to destroy the gol instance when the user is done
 */
void
GOL_Instance_destroy(GOL_Instance *gol) {
    gol->cm->~cellmap();
    delete[] gol->cells;
    free(gol);
}
/**
 * Method to initialize the gol instance
 */
void
GOL_Init(GOL_Instance *gol) {
    gol->cm->init();
    gol->cells = gol->cm->return_cells();
}
/**
 * Method to run the gol instance by one step
 */
void
GOL_Step(GOL_Instance *gol) {
    gol->cm->next_generation();
    gol->cells = gol->cm->return_cells();
}
/**
 * Method to get the cell values
 */
void
GOL_get_values(GOL_Instance *gol, int8_t *arr) {
    unsigned char *c = gol->cells;
    unsigned int total_cells = cellmap_width * cellmap_height;
    for (unsigned int i = 0; i < total_cells; i++) {
        unsigned int curr_ind = i * 8;
        int8_t curr = (int8_t) *(c+i) & 0x01;
        *(arr + curr_ind) = curr;
    }
}