1 files changed, 56 insertions, 0 deletions
diff --git a/prototypes/tile/4.mu b/prototypes/tile/4.mu
new file mode 100644
index 00000000..660dbfbc
--- /dev/null
+++ b/prototypes/tile/4.mu
@@ -0,0 +1,56 @@
+# animate a large box
+#
+# To run (on Linux and x86):
+#   $ git clone https://github.com/akkartik/mu
+#   $ cd mu
+#   $ ./translate_mu prototypes/tile/4.mu
+#   $ ./a.elf
+
+fn main -> exit-status/ebx: int {
+  clear-screen
+  enable-keyboard-immediate-mode
+  var dummy/eax: byte <- read-key
+  draw-box 5, 5, 0x23, 0x23  # 35, 35
+  sleep 0 0x5f5e100  # 100ms
+  sleep 0 0x5f5e100  # 100ms
+  draw-box 5, 5, 0x23, 0x69  # 35, 105
+  sleep 0 0x5f5e100  # 100ms
+  sleep 0 0x5f5e100  # 100ms
+  draw-box 5, 5, 0x23, 0xaf  # 35, 175
+  var dummy/eax: byte <- read-key
+  enable-keyboard-type-mode
+  clear-screen
+  exit-status <- copy 0
+}
+
+fn draw-box row1: int, col1: int, row2: int, col2: int {
+  clear-screen
+  draw-horizontal-line row1, col1, col2
+  draw-vertical-line row1, row2, col1
+  draw-horizontal-line row2, col1, col2
+  draw-vertical-line row1, row2, col2
+}
+
+fn draw-horizontal-line row: int, col1: int, col2: int {
+  var col/eax: int <- copy col1
+  move-cursor-on-screen row, col
+  {
+    compare col, col2
+    break-if->=
+    print-string-to-screen "-"
+    col <- increment
+    loop
+  }
+}
+
+fn draw-vertical-line row1: int, row2: int, col: int {
+  var row/eax: int <- copy row1
+  {
+    compare row, row2
+    break-if->=
+    move-cursor-on-screen row, col
+    print-string-to-screen "|"
+    row <- increment
+    loop
+  }
+}