Split off QuarterTile

src/openrct2/world/QuarterTile.cpp

@@ -0,0 +1,65 @@
+/*****************************************************************************
+ * Copyright (c) 2014-2024 OpenRCT2 developers
+ *
+ * For a complete list of all authors, please refer to contributors.md
+ * Interested in contributing? Visit https://github.com/OpenRCT2/OpenRCT2
+ *
+ * OpenRCT2 is licensed under the GNU General Public License version 3.
+ *****************************************************************************/
+
+#include "QuarterTile.h"
+
+#include "../Diagnostic.h"
+
+// Rotate both of the values amount
+const QuarterTile QuarterTile::Rotate(uint8_t amount) const
+{
+    switch (amount)
+    {
+        case 0:
+            return QuarterTile{ *this };
+        case 1:
+        {
+            auto rotVal1 = _val << 1;
+            auto rotVal2 = rotVal1 >> 4;
+            // Clear the bit from the tileQuarter
+            rotVal1 &= 0b11101110;
+            // Clear the bit from the zQuarter
+            rotVal2 &= 0b00010001;
+            return QuarterTile{ static_cast<uint8_t>(rotVal1 | rotVal2) };
+        }
+        case 2:
+        {
+            auto rotVal1 = _val << 2;
+            auto rotVal2 = rotVal1 >> 4;
+            // Clear the bit from the tileQuarter
+            rotVal1 &= 0b11001100;
+            // Clear the bit from the zQuarter
+            rotVal2 &= 0b00110011;
+            return QuarterTile{ static_cast<uint8_t>(rotVal1 | rotVal2) };
+        }
+        case 3:
+        {
+            auto rotVal1 = _val << 3;
+            auto rotVal2 = rotVal1 >> 4;
+            // Clear the bit from the tileQuarter
+            rotVal1 &= 0b10001000;
+            // Clear the bit from the zQuarter
+            rotVal2 &= 0b01110111;
+            return QuarterTile{ static_cast<uint8_t>(rotVal1 | rotVal2) };
+        }
+        default:
+            LOG_ERROR("Tried to rotate QuarterTile invalid amount.");
+            return QuarterTile{ 0 };
+    }
+}
+
+uint8_t QuarterTile::GetBaseQuarterOccupied() const
+{
+    return _val & 0xF;
+}
+
+uint8_t QuarterTile::GetZQuarterOccupied() const
+{
+    return (_val >> 4) & 0xF;
+}