package electrosphere.client.fluid.cells;

import org.joml.Vector3d;
import org.joml.Vector3i;
import org.ode4j.ode.DBody;

import electrosphere.client.fluid.cache.FluidChunkData;
import electrosphere.collision.CollisionEngine;
import electrosphere.engine.Globals;
import electrosphere.entity.ClientEntityUtils;
import electrosphere.entity.Entity;
import electrosphere.entity.EntityUtils;
import electrosphere.entity.types.fluid.FluidChunk;
import electrosphere.renderer.shader.ShaderProgram;
import electrosphere.renderer.texture.Texture;

/**
 *
 * @author satellite
 */
public class FluidDrawCell {
    //the position of the draw cell in world coordinates
    Vector3i worldPos;
    
    FluidChunkData data;
    
    Entity modelEntity;
    
    ShaderProgram program;
    
    DBody physicsObject;
    
    static Texture groundTextureOne = new Texture("/Textures/Ground/Dirt1.png");
    static Texture groundTextureTwo = new Texture("/Textures/Ground/Dirt1.png");
    static Texture groundTextureThree = new Texture("/Textures/Ground/Dirt1.png");
    static Texture groundTextureFour = new Texture("/Textures/Ground/Dirt1.png");
    
    static {
//        groundTextureOne = new Texture("/Textures/Ground/GrassTileable.png");
//        groundTextureTwo = new Texture("/Textures/Ground/Dirt1.png");
//        groundTextureThree = new Texture("/Textures/Ground/Dirt1.png");
//        groundTextureFour = new Texture("/Textures/Ground/Dirt1.png");
    }
    
    
    FluidDrawCell(){
        
    }
    
    
    /**
     * Constructs a drawcell object
     */
    public static FluidDrawCell generateFluidCell(
            Vector3i worldPos,
            FluidChunkData data,
            ShaderProgram program
    ){
        FluidDrawCell rVal = new FluidDrawCell();
        rVal.worldPos = worldPos;
        rVal.program = program;
        rVal.data = data;
        return rVal;
    }
    
    /**
     * Generates a drawable entity based on this chunk
     */
    public void generateDrawableEntity(){
        if(modelEntity != null){
            Globals.clientScene.deregisterEntity(modelEntity);
        }
        modelEntity = FluidChunk.clientCreateFluidChunkEntity(data.getVoxelWeight(), data.getVoxelType());

        ClientEntityUtils.initiallyPositionEntity(modelEntity, getRealPos());
    }

    protected Vector3d getRealPos(){
        return new Vector3d(
            worldPos.x * FluidChunkData.CHUNK_SIZE,
            worldPos.y * FluidChunkData.CHUNK_SIZE,
            worldPos.z * FluidChunkData.CHUNK_SIZE
        );
    }
    
    /**
     * Destroys a drawcell including its physics
     */
    public void destroy(){
        CollisionEngine collisionEngine = Globals.clientSceneWrapper.getCollisionEngine();
        collisionEngine.destroyEntityThatHasPhysics(modelEntity);
        EntityUtils.cleanUpEntity(modelEntity);
    }

    /**
     * Gets the current chunk data for this draw cell
     * @return The chunk data
     */
    public FluidChunkData getData(){
        return data;
    }
    
}