Initial data commit

Task/Wireworld/Go/wireworld.go

@@ -0,0 +1,90 @@
+package main
+
+import (
+    "bytes"
+    "fmt"
+    "io/ioutil"
+    "strings"
+)
+
+var rows, cols int // extent of input configuration
+var rx, cx int     // grid extent (includes border)
+var mn []int       // offsets of moore neighborhood
+
+func main() {
+    // read input configuration from file
+    src, err := ioutil.ReadFile("ww.config")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    srcRows := bytes.Split(src, []byte{'\n'})
+
+    // compute package variables
+    rows = len(srcRows)
+    for _, r := range srcRows {
+        if len(r) > cols {
+            cols = len(r)
+        }
+    }
+    rx, cx = rows+2, cols+2
+    mn = []int{-cx-1, -cx, -cx+1, -1, 1, cx-1, cx, cx+1}
+
+    // allocate two grids and copy input into first grid
+    odd := make([]byte, rx*cx)
+    even := make([]byte, rx*cx)
+    for ri, r := range srcRows {
+        copy(odd[(ri+1)*cx+1:], r)
+    }
+
+    // run
+    for {
+        print(odd)
+        step(even, odd)
+        fmt.Scanln()
+
+        print(even)
+        step(odd, even)
+        fmt.Scanln()
+    }
+}
+
+func print(grid []byte) {
+    fmt.Println(strings.Repeat("__", cols))
+    fmt.Println()
+    for r := 1; r <= rows; r++ {
+        for c := 1; c <= cols; c++ {
+            if grid[r*cx+c] == 0 {
+                fmt.Print("  ")
+            } else {
+                fmt.Printf(" %c", grid[r*cx+c])
+            }
+        }
+        fmt.Println()
+    }
+}
+
+func step(dst, src []byte) {
+    for r := 1; r <= rows; r++ {
+        for c := 1; c <= cols; c++ {
+            x := r*cx + c
+            dst[x] = src[x]
+            switch dst[x] {
+            case 'H':
+                dst[x] = 't'
+            case 't':
+                dst[x] = '.'
+            case '.':
+                var nn int
+                for _, n := range mn {
+                    if src[x+n] == 'H' {
+                        nn++
+                    }
+                }
+                if nn == 1 || nn == 2 {
+                    dst[x] = 'H'
+                }
+            }
+        }
+    }
+}