JackOLanternBlock.cs

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using Engine;
using Engine.Graphics;
 
namespace Game {
    public class JackOLanternBlock : Block {
        public static int Index = 132;
 
        public BlockMesh[] m_blockMeshesByData = new BlockMesh[4];
 
        public BlockMesh m_standaloneBlockMesh = new();
 
        public BoundingBox[] m_collisionBoxes = new BoundingBox[1];
 
        public override void Initialize() {
            Model model = ContentManager.Get<Model>("Models/Pumpkins");
            Matrix boneAbsoluteTransform = BlockMesh.GetBoneAbsoluteTransform(model.FindMesh("JackOLantern").ParentBone);
            for (int i = 0; i < 4; i++) {
                float radians = i * (float)Math.PI / 2f;
                BlockMesh blockMesh = new();
                blockMesh.AppendModelMeshPart(
                    model.FindMesh("JackOLantern").MeshParts[0],
                    boneAbsoluteTransform * Matrix.CreateRotationY(radians) * Matrix.CreateTranslation(0.5f, 0f, 0.5f),
                    false,
                    false,
                    false,
                    false,
                    new Color(232, 232, 232)
                );
                blockMesh.AppendModelMeshPart(
                    model.FindMesh("JackOLantern").MeshParts[0],
                    boneAbsoluteTransform * Matrix.CreateRotationY(radians) * Matrix.CreateTranslation(0.5f, 0f, 0.5f),
                    true,
                    true,
                    false,
                    false,
                    Color.White
                );
                m_blockMeshesByData[i] = blockMesh;
            }
            m_standaloneBlockMesh.AppendModelMeshPart(
                model.FindMesh("JackOLantern").MeshParts[0],
                boneAbsoluteTransform * Matrix.CreateTranslation(0f, -0.23f, 0f),
                false,
                false,
                false,
                false,
                new Color(232, 232, 232)
            );
            m_standaloneBlockMesh.AppendModelMeshPart(
                model.FindMesh("JackOLantern").MeshParts[0],
                boneAbsoluteTransform * Matrix.CreateTranslation(0f, -0.23f, 0f),
                true,
                true,
                false,
                false,
                Color.White
            );
            m_collisionBoxes[0] = m_blockMeshesByData[0].CalculateBoundingBox();
            base.Initialize();
        }
 
        public override BlockPlacementData GetPlacementValue(SubsystemTerrain subsystemTerrain,
            ComponentMiner componentMiner,
            int value,
            TerrainRaycastResult raycastResult) {
            Vector3 forward = Matrix.CreateFromQuaternion(componentMiner.ComponentCreature.ComponentCreatureModel.EyeRotation).Forward;
            float num = Vector3.Dot(forward, Vector3.UnitZ);
            float num2 = Vector3.Dot(forward, Vector3.UnitX);
            float num3 = Vector3.Dot(forward, -Vector3.UnitZ);
            float num4 = Vector3.Dot(forward, -Vector3.UnitX);
            int data = 0;
            if (num == MathUtils.Max(num, num2, num3, num4)) {
                data = 0;
            }
            else if (num2 == MathUtils.Max(num, num2, num3, num4)) {
                data = 1;
            }
            else if (num3 == MathUtils.Max(num, num2, num3, num4)) {
                data = 2;
            }
            else if (num4 == MathUtils.Max(num, num2, num3, num4)) {
                data = 3;
            }
            BlockPlacementData result = default;
            result.Value = Terrain.ReplaceData(Terrain.ReplaceContents(132), data);
            result.CellFace = raycastResult.CellFace;
            return result;
        }
 
        public override BoundingBox[] GetCustomCollisionBoxes(SubsystemTerrain terrain, int value) => m_collisionBoxes;
 
        public override void GenerateTerrainVertices(BlockGeometryGenerator generator, TerrainGeometry geometry, int value, int x, int y, int z) {
            int num = Terrain.ExtractData(value);
            if (num < m_blockMeshesByData.Length) {
                generator.GenerateMeshVertices(
                    this,
                    x,
                    y,
                    z,
                    m_blockMeshesByData[num],
                    Color.White,
                    null,
                    geometry.SubsetAlphaTest
                );
            }
        }
 
        public override void DrawBlock(PrimitivesRenderer3D primitivesRenderer,
            int value,
            Color color,
            float size,
            ref Matrix matrix,
            DrawBlockEnvironmentData environmentData) {
            BlocksManager.DrawMeshBlock(primitivesRenderer, m_standaloneBlockMesh, color, 2f * size, ref matrix, environmentData);
        }
 
        public override bool IsMovableByPiston(int value, int pistonFace, int y, out bool isEnd) {
            isEnd = false;
            return false;
        }
    }
}