Introduce normalised Wooden A supports functions

src/openrct2/paint/Supports.cpp

@@ -446,6 +446,45 @@ static constexpr const uint16_t word_97B3C4[] = {
 
 // clang-format on
 
+static WoodenSupportSubType rotatedWoodenSupportSubTypes[6][NumOrthogonalDirections] = {
+    {
+        WoodenSupportSubType::NeSw,
+        WoodenSupportSubType::NwSe,
+        WoodenSupportSubType::NeSw,
+        WoodenSupportSubType::NwSe,
+    },
+    {
+        WoodenSupportSubType::NwSe,
+        WoodenSupportSubType::NeSw,
+        WoodenSupportSubType::NwSe,
+        WoodenSupportSubType::NeSw,
+    },
+    {
+        WoodenSupportSubType::Corner0,
+        WoodenSupportSubType::Corner1,
+        WoodenSupportSubType::Corner2,
+        WoodenSupportSubType::Corner3,
+    },
+    {
+        WoodenSupportSubType::Corner1,
+        WoodenSupportSubType::Corner2,
+        WoodenSupportSubType::Corner3,
+        WoodenSupportSubType::Corner0,
+    },
+    {
+        WoodenSupportSubType::Corner2,
+        WoodenSupportSubType::Corner3,
+        WoodenSupportSubType::Corner0,
+        WoodenSupportSubType::Corner1,
+    },
+    {
+        WoodenSupportSubType::Corner3,
+        WoodenSupportSubType::Corner0,
+        WoodenSupportSubType::Corner1,
+        WoodenSupportSubType::Corner2,
+    },
+};
+
 /**
  * Draw repeated supports for left over space
  *
@@ -641,6 +680,28 @@ bool WoodenASupportsPaintSetup(
     return hasSupports;
 }
 
+bool WoodenASupportsPaintSetup(
+    PaintSession& session, WoodenSupportType supportType, WoodenSupportSubType subType, int32_t height, ImageId imageTemplate,
+    WoodenSupportTransitionType transitionType, Direction direction)
+{
+    int32_t oldSupportType = (EnumValue(supportType) * 6) + EnumValue(subType);
+    int32_t special = 0;
+    if (transitionType != WoodenSupportTransitionType::None)
+    {
+        special = (EnumValue(transitionType) * NumOrthogonalDirections) + direction + 1;
+    }
+
+    return WoodenASupportsPaintSetup(session, oldSupportType, special, height, imageTemplate);
+}
+
+bool WoodenASupportsPaintSetupRotated(
+    PaintSession& session, WoodenSupportType supportType, WoodenSupportSubType subType, Direction direction, int32_t height,
+    ImageId imageTemplate, WoodenSupportTransitionType transitionType)
+{
+    subType = rotatedWoodenSupportSubTypes[EnumValue(subType)][direction];
+    return WoodenASupportsPaintSetup(session, supportType, subType, height, imageTemplate, transitionType, direction);
+}
+
 /**
  * Wooden supports
  *  rct2: 0x00662D5C

src/openrct2/paint/Supports.h

@@ -17,8 +17,41 @@ struct FootpathPaintInfo;
 
 constexpr const uint8_t NumVanillaWoodenSupportTypes = 49;
 
+enum class WoodenSupportType : uint8_t
+{
+    Truss = 0,
+    Mine = 1,
+};
+
+enum class WoodenSupportSubType : uint8_t
+{
+    NeSw = 0,
+    NwSe = 1,
+    Corner0 = 2,
+    Corner1 = 3,
+    Corner2 = 4,
+    Corner3 = 5,
+};
+
+enum class WoodenSupportTransitionType : uint8_t
+{
+    None = 255,
+    FlatToUp25Deg = 0,
+    Up25DegToFlat = 1,
+    Up25Deg = 2,
+    Up25DegToUp60Deg = 3,
+    Up60DegToUp25Deg = 4,
+    Up60Deg = 5,
+};
+
 bool WoodenASupportsPaintSetup(
     PaintSession& session, int32_t supportType, int32_t special, int32_t height, ImageId imageTemplate);
+bool WoodenASupportsPaintSetup(
+    PaintSession& session, WoodenSupportType supportType, WoodenSupportSubType subType, int32_t height, ImageId imageTemplate,
+    WoodenSupportTransitionType transitionType = WoodenSupportTransitionType::None, Direction direction = 0);
+bool WoodenASupportsPaintSetupRotated(
+    PaintSession& session, WoodenSupportType supportType, WoodenSupportSubType subType, Direction direction, int32_t height,
+    ImageId imageTemplate, WoodenSupportTransitionType transitionType = WoodenSupportTransitionType::None);
 bool WoodenBSupportsPaintSetup(
     PaintSession& session, int32_t supportType, int32_t special, int32_t height, ImageId imageTemplate);
 bool MetalASupportsPaintSetup(