decomp: UpdateNodeReservationState family (ov210/ov211/ov282)

Node reservation-state transition: clears target on state 0x12 (returns 1),
else marks target 0x11 when the node flag is set and state is in {2,9,a,c,d}.
Combines double-negation, shared-epilogue branch, and bitfield idioms.
Byte-exact across 3 overlays.

Author: Yokimitsuro

src/overlays/ov210/auto/func_ov210_020d06b4.c

@@ -0,0 +1,17 @@
+typedef struct { unsigned char flag : 1; } BitByte;
+
+int func_ov210_020d06b4(char *obj) {
+    char *node = *(char **)*(char **)(obj + 0x214);
+    signed char state = *(signed char *)(node + 0x1c6);
+    if (state == 0x12) {
+        *(char *)(node + 0x1c7) = 0;
+        return 1;
+    }
+    if (*(signed char *)(node + 0x1c7) != 0x11 && state != 0x11) {
+        if (((BitByte *)(node + 0x17a))->flag) {
+            if (!(state != 2 && state != 9 && state != 0xa && state != 0xc && state != 0xd))
+                *(char *)(node + 0x1c7) = 0x11;
+        }
+    }
+    return 0;
+}

src/overlays/ov211/auto/func_ov211_020d24d4.c

@@ -0,0 +1,17 @@
+typedef struct { unsigned char flag : 1; } BitByte;
+
+int func_ov211_020d24d4(char *obj) {
+    char *node = *(char **)*(char **)(obj + 0x214);
+    signed char state = *(signed char *)(node + 0x1c6);
+    if (state == 0x12) {
+        *(char *)(node + 0x1c7) = 0;
+        return 1;
+    }
+    if (*(signed char *)(node + 0x1c7) != 0x11 && state != 0x11) {
+        if (((BitByte *)(node + 0x17a))->flag) {
+            if (!(state != 2 && state != 9 && state != 0xa && state != 0xc && state != 0xd))
+                *(char *)(node + 0x1c7) = 0x11;
+        }
+    }
+    return 0;
+}

src/overlays/ov282/auto/func_ov282_020d06c0.c

@@ -0,0 +1,17 @@
+typedef struct { unsigned char flag : 1; } BitByte;
+
+int func_ov282_020d06c0(char *obj) {
+    char *node = *(char **)*(char **)(obj + 0x214);
+    signed char state = *(signed char *)(node + 0x1c6);
+    if (state == 0x12) {
+        *(char *)(node + 0x1c7) = 0;
+        return 1;
+    }
+    if (*(signed char *)(node + 0x1c7) != 0x11 && state != 0x11) {
+        if (((BitByte *)(node + 0x17a))->flag) {
+            if (!(state != 2 && state != 9 && state != 0xa && state != 0xc && state != 0xd))
+                *(char *)(node + 0x1c7) = 0x11;
+        }
+    }
+    return 0;
+}