#include <jni.h>

#ifndef ENVIRONMENT_H
#define ENVIRONMENT_H

/**
 * The List lookup table
 */
typedef struct {
    jmethodID jListSize;
    jmethodID jListGet;
    jmethodID jListAdd;
} ListLookupTable;

/**
 * The ServerFluidChunk lookup table
 */
typedef struct {
    jfieldID dJId;
    jfieldID d0JId;
    jfieldID uJId;
    jfieldID vJId;
    jfieldID wJId;
    jfieldID u0JId;
    jfieldID v0JId;
    jfieldID w0JId;
    jfieldID neighborsId;
    jfieldID chunkmaskJId;
    jfieldID updatedId;
    jfieldID totalDensityId;
    jfieldID asleepId;
    jfieldID homogenousId;
    jfieldID normalizationRatioId;
} ServerFluidChunkLookupTable;

/**
 * Lookup table for various java fields, methods, etc
 */
typedef struct {
    ListLookupTable listTable;
    ServerFluidChunkLookupTable serverFluidChunkTable;
    jclass serverFluidChunkClass;
} JNILookupTable;

/**
 * Stores data about the simulation environment
*/
typedef struct {
    JNILookupTable lookupTable;
    float gravity;
    double existingDensity;
    double newDensity;
    float normalizationRatio;
} Environment;

#endif