Create xmastree.sh

xmastree.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+trap "tput reset; tput cnorm; exit" 2
+clear
+tput civis
+lin=2
+col=$(($(tput cols) / 2))
+c=$((col-1))
+est=$((c-2))
+color=0
+tput setaf 2; tput bold
+
+# Tree
+for ((i=1; i<20; i+=2))
+{
+    tput cup $lin $col
+    for ((j=1; j<=i; j++))
+    {
+        echo -n \*
+    }
+    let lin++
+    let col--
+}
+
+tput sgr0; tput setaf 3
+
+# Trunk
+for ((i=1; i<=2; i++))
+{
+    tput cup $((lin++)) $c
+    echo 'mWm'
+}
+new_year=$(date +'%Y')
+let new_year++
+tput setaf 1; tput bold
+tput cup $lin $((c - 6)); echo MERRY CHRISTMAS
+tput cup $((lin + 1)) $((c - 10)); echo And lots of CODE in $new_year
+let c++
+k=1
+
+# Lights and decorations
+while true; do
+    for ((i=1; i<=35; i++)) {
+        # Turn off the lights
+        [ $k -gt 1 ] && {
+            tput setaf 2; tput bold
+            tput cup ${line[$[k-1]$i]} ${column[$[k-1]$i]}; echo \*
+            unset line[$[k-1]$i]; unset column[$[k-1]$i]  # Array cleanup
+        }
+
+        li=$((RANDOM % 9 + 3))
+        start=$((c-li+2))
+        co=$((RANDOM % (li-2) * 2 + 1 + start))
+        tput setaf $color; tput bold   # Switch colors
+        tput cup $li $co
+        echo o
+        line[$k$i]=$li
+        column[$k$i]=$co
+        color=$(((color+1)%8))
+        # Flashing text
+        sh=1
+        for l in C O D E
+        do
+            tput cup $((lin+1)) $((c+sh))
+            echo $l
+            let sh++
+            sleep 0.01
+        done
+    }
+    k=$((k % 2 + 1))
+done