using Godot;
using IslaApocalypse.Core;

namespace IslaApocalypse.Client
{
	// Notice this inherits from MeshInstance3D, which is Godot's visual 3D node!
	public partial class ChunkRenderer : MeshInstance3D
	{
		public void RenderChunk(ChunkData data)
		{
			// 1. Pass the BlockIDs array to the generator, plus the per-column
			//    surface/biome/road data it needs to fade colours smoothly.
			Mesh = MarchingCubes.GenerateMesh(
				data.Densities, data.BlockIDs,
				data.SurfaceHeights, data.ColumnBiomes, data.ColumnRoadMaterial,
				Constants.ISO_LEVEL, Constants.VOXEL_SCALE);
			

			StandardMaterial3D mat = new StandardMaterial3D();
			
			// 2. THE FIX: Tell the material to use the colors we paint on the vertices!
			mat.VertexColorUseAsAlbedo = true; 
			mat.Roughness = 0.8f;
			mat.CullMode = BaseMaterial3D.CullModeEnum.Disabled; 
			
			MaterialOverride = mat;

			Position = new Vector3(
				data.ChunkPosition.X * Constants.CHUNK_SIZE_X * Constants.VOXEL_SCALE, 
				0, 
				data.ChunkPosition.Y * Constants.CHUNK_SIZE_Z * Constants.VOXEL_SCALE
			);
		}
	}
}