commit 9245e14aa94aacafc40c29ee381ca309c495b29b
parent 356043566b7e4dde94e5303fddf50563d7909aea
Author: Brian C. Lane <bcl@brianlane.com>
Date: Sun, 12 Apr 2020 17:47:55 -0700
Add loading Life 1.05 pattern files
Diffstat:
| M | main.go | | | 62 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 62 insertions(+), 0 deletions(-)
diff --git a/main.go b/main.go
@@ -145,6 +145,10 @@ func (g *LifeGame) InitializeCells() {
} else if strings.HasPrefix(header, "!Name:") {
g.cells, err = ParsePlaintext(scanner)
}
+
+ if err != nil {
+ log.Fatalf("Error reading pattern file: %s", err)
+ }
}
// InitializeRandomCells resets the world to a random state
@@ -173,9 +177,67 @@ func (g *LifeGame) InitializeRandomCells() {
// ParseLife105 pattern file
// The header has already been read from the buffer when this is called
+// #D Descriptions lines (0+)
+// #R Rule line (0/1)
+// #P -1 4 (Upper left corner, required, center is 0,0)
+// The pattern is . for dead and * for live
func ParseLife105(scanner *bufio.Scanner) ([][]*Cell, error) {
cells := make([][]*Cell, cfg.Rows, cfg.Rows)
+ // Fill it with dead cells first
+ for x := 0; x < cfg.Rows; x++ {
+ for y := 0; y < cfg.Columns; y++ {
+ c := &Cell{x: x, y: y}
+ cells[x] = append(cells[x], c)
+ }
+ }
+
+ var x, y int
+ var err error
+ for scanner.Scan() {
+ line := scanner.Text()
+ if strings.HasPrefix(line, "#D") {
+ continue
+ } else if strings.HasPrefix(line, "#N") {
+ // Use default rules (from the cmdline in this case)
+ continue
+ } else if strings.HasPrefix(line, "#R") {
+ // TODO Parse rule and return it or setup cfg.Rule
+ // Format is: sss/bbb where s is stay alive and b are birth values
+ // Need to flip it to Bbbb/Ssss format
+
+ } else if strings.HasPrefix(line, "#P") {
+ // Initial position
+ fields := strings.Split(line, " ")
+ if len(fields) != 3 {
+ return nil, fmt.Errorf("Cannot parse position line: %s", line)
+ }
+ if y, err = strconv.Atoi(fields[1]); err != nil {
+ return nil, fmt.Errorf("Error parsing position: %s", err)
+ }
+ if x, err = strconv.Atoi(fields[2]); err != nil {
+ return nil, fmt.Errorf("Error parsing position: %s", err)
+ }
+
+ // Move x, y to center of field
+ x = x + cfg.Rows/2
+ y = y + cfg.Columns/2
+ } else {
+ // Parse the line, error if it isn't . or *
+ yLine := y
+ for _, c := range line {
+ if c != '.' && c != '*' {
+ return nil, fmt.Errorf("Illegal characters in pattern: %s", line)
+ }
+ if c == '*' {
+ cells[x][yLine].alive = true
+ cells[x][yLine].aliveNext = true
+ }
+ yLine = yLine + 1
+ }
+ x = x + 1
+ }
+ }
return cells, nil
}
