MadonnaModelø Arialþ!þþDþö(.2> B 6:A q ø­. {Conway's game of "Life" with Moore neighborhoods} {simulation controls} METHOD Euler STARTTIME = 0 STOPTIME= 5 DT = 1 DTOUT = 1 {set size of grid} begin = 1 end = 5 {limit cell values to fall between zero and one} limit cells >= 0 limit cells <= 1 {Initialize the cells by reading external data} init cells[begin..end,begin..end] = #cell_init(i,j) {set game rules -- number of neighbors necessary to create or sustain a focal cell} {different values are given for central, corner, and edge cells. Here a lower and upper bound for the values of life for central cells is specified} CELL_LIVE_LOWER = 4 CELL_LIVE_UPPER = 6 CELL_LIVE_CORNER = 1 CELL_LIVE_EDGE = 2 {count the number of Moore neighbors that are alive} status_count[begin..end,begin..end] = IF ((i = begin) AND (j = begin)) THEN cells[i,j+1] + cells[i+1,j] + cells[i+1,j+1] ELSE IF ((i = begin) AND (j = end)) THEN cells[i,j-1] + cells[i+1,j] + cells[i+1,j-1] ELSE IF ((i = end) AND (j = end)) THEN cells[i,j-1] + cells[i-1,j] + cells[i-1,j-1] ELSE IF ((i = end) AND (j = begin)) THEN cells[i,j+1] + cells[i-1,j] + cells[i-1,j+1] ELSE IF (i-1 < begin) THEN cells[i,j+1] + cells[i,j-1] + cells[i+1,j] + cells[i+1,j+1] + cells[i+1,j-1] ELSE IF (i+1 > end) THEN cells[i,j+1] + cells[i,j-1] + cells[i-1,j] + cells[i-1,j+1] + cells[i-1,j-1] ELSE IF (j-1 < begin) THEN cells[i+1,j] + cells[i-1,j] + cells[i,j+1] + cells[i+1,j+1] + cells[i-1,j+1] ELSE IF (j+1 > end) THEN cells[i+1,j] + cells[i-1,j] + cells[i,j-1] + cells[i+1,j-1] + cells[i-1,j-1] ELSE cells[i+1,j] + cells[i-1,j] + cells[i,j+1] + cells[i,j-1] + cells[i+1,j+1] + cells[i+1,j-1] + cells[i-1,j+1] +cells[i-1,j-1] {determine if each cell should be alive on the next time step by comparing count of neighbors to the rules} cell_state[begin..end,begin..end] = IF ((i = begin) AND (j = begin) AND (status_count[i,j] = CELL_LIVE_CORNER)) THEN 1 ELSE IF ((i = begin) AND (j = end) AND (status_count[i,j] = CELL_LIVE_CORNER)) THEN 1 ELSE IF ((i = end) AND (j = end) AND (status_count[i,j] = CELL_LIVE_CORNER)) THEN 1 ELSE IF ((i = end) AND (j = begin) AND (status_count[i,j] = CELL_LIVE_CORNER)) THEN 1 ELSE IF ((i-1 < begin) AND (j <> end) AND (j <> begin) AND (status_count[i,j] = CELL_LIVE_EDGE)) THEN 1 ELSE IF ((i+1 > end) AND (j <> end) AND (j <> begin) AND (status_count[i,j] = CELL_LIVE_EDGE)) THEN 1 ELSE IF ((j-1 < begin) AND (i <> end) AND (i <> begin) AND (status_count[i,j] = CELL_LIVE_EDGE)) THEN 1 ELSE IF ((j+1 > end) AND (i <> end) AND (i <> begin) AND (status_count[i,j] = CELL_LIVE_EDGE)) THEN 1 ELSE IF ((i <> end) AND (i <> begin) AND (j <> end) AND (j <> begin) AND (status_count[i,j] >= CELL_LIVE_LOWER) AND (status_count[i,j] <= CELL_LIVE_UPPER)) THEN 1 ELSE 0 {initiate cell to next state on next time step} next cells[begin..end,begin..end] = cell_state[i,j] {calculate the auxillary quantity of the number of alive cells -- for reporting only} cell_sum = ARRAYSUM(cells[*]) øöí/A ) q0 ™Áø#cell_init €?@@@€@ @€?€?€?@€?€?€?@@€?€@€?€? @€?€?öU0…0Ñ2öÙ2øA@ø eulerööþöúü©ñÒMbP?úü©ñÒMbP?ööúü©ñÒMbP? $HLP & ,6b.Fjnr z  0)053võ/å/Ñ/3M0 10$4&‰4(‘4*™4,3.-3¡4