room building

1 files changed, 29 insertions, 0 deletions

diff --git a/src/main/java/kr/syeyoung/dungeonsguide/utils/ShortUtils.java b/src/main/java/kr/syeyoung/dungeonsguide/utils/ShortUtils.java
new file mode 100644
index 00000000..d7ce60c5
--- /dev/null
+++ b/src/main/java/kr/syeyoung/dungeonsguide/utils/ShortUtils.java
@@ -0,0 +1,29 @@
+package kr.syeyoung.dungeonsguide.utils;
+
+public class ShortUtils {
+    public static short rotateClockwise(short integer) {
+        int res = 0;
+        for(int i=0; i<16; i++){
+            int x = i % 4;
+            int y = i / 4;
+            res |= (integer >> i & 0x1) << (x*4 + y);
+        }
+        return (short) (res & 0xFFFF);
+    }
+    public static short rotateCounterClockwise(short integer) {
+        int res = 0;
+        for(int i=0; i<16; i++){
+            int x = i % 4;
+            int y = i / 4;
+            res |= (integer >> i & 0x1) << ((4-x-1) *4 +(4 - y - 1));
+        }
+        return (short) (res & 0xFFFF);
+    }
+
+    public static short topLeftifyInt(short integer) {
+        int it = integer & 0xFFFF;
+        while ((it & (0x1111)) == 0) it >>= 1;
+        while ((it & (0xF)) == 0) it >>= 4;
+        return (short) (it & 0xFFFF);
+    }
+}