/**
 * @file		RSPTerrain.c
 * @date		22/08/2022
 * @author		JackCarterSmith
 * @copyright	GPL-v3.0
 * @brief		HMP terrain datas parser and export to Waveform OBJ format and greyscale PNG heightmap.
 *
 */

#if defined(RSPTERRAIN_DLL)
	#define RSPTERRAIN_DLLBUILD
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "RSPTerrain_errordefs.h"
#include "RSPTerrain_datatypes.h"
#include "hmp_parser.h"
#include "data_builders.h"
#include "RSPTerrain.h"


inline char* RSPTerrain_getVersion( void ) {
	return PRG_VERSION;
}

unsigned short RSPTerrain_processHMPFile( T_RSPTERRAIN_HMP* hmpStruct, const char* const filePath,
		const RSPTERRAIN_PARAMETERS params ) {

	if ( hmpStruct == NULL || filePath == NULL ) return RSPLIB_ERROR_ARGS_NULL;

	return RSP_TerrainLib_ParseHMPFile(filePath, hmpStruct, &params);
}

unsigned short RSPTerrain_processHMPFileMemory( T_RSPTERRAIN_HMP* hmpStruct, const void* const memFilePtr,
		const long memFileSize, const RSPTERRAIN_PARAMETERS params ) {

	if ( hmpStruct == NULL || memFilePtr == NULL ) return RSPLIB_ERROR_ARGS_NULL;

	return RSP_TerrainLib_ParseHMPMemFile((MEMFILE)memFilePtr, hmpStruct, &params);
}

unsigned short RSPTerrain_terrainToHeightmap( T_RSPTERRAIN_HEIGHTMAP* heightmap, const T_RSPTERRAIN_HMP* hmpStruct ) {
	if ( hmpStruct == NULL ) return RSPLIB_ERROR_ARGS_NULL;

	return RSP_TerrainLib_ConstructHeightmap(heightmap, hmpStruct);
}

unsigned short RSPTerrain_terrainToMesh( T_RSPTERRAIN_MESH* mesh, const T_RSPTERRAIN_HMP* hmpStruct, const float scale ) {
	if ( hmpStruct == NULL ) return RSPLIB_ERROR_ARGS_NULL;

	return RSP_TerrainLib_ConstructMesh(mesh, hmpStruct, scale);
}

unsigned short RSPTerrain_terrainToGL( void* glTerrainObj, const T_RSPTERRAIN_HMP* hmpStruct ) {
#ifndef GL_SUPPORT
	return RSPLIB_ERROR_MOD_DISABLED;
#endif

	return RSPLIB_SUCCESS;
}

unsigned short RSPTerrain_terrainToD3D( void* D3DTerrainObj, const T_RSPTERRAIN_HMP* hmpStruct ) {
#ifndef D3D_SUPPORT
	return RSPLIB_ERROR_MOD_DISABLED;
#endif

	return RSPLIB_SUCCESS;
}

void RSPTerrain_freeHMP(T_RSPTERRAIN_HMP* hmpStruct) {
	if (hmpStruct == NULL) return;

	if (hmpStruct->tilesmap) free(hmpStruct->tilesmap);

	free(hmpStruct);
}

void RSPTerrain_freeHeightmap(T_RSPTERRAIN_HEIGHTMAP* heightmap) {
	unsigned int i;

	if (heightmap == NULL) return;

	for ( i = 0; i < heightmap->width * RSPTERRAINLIB_TILE_SAMPLING; i++ )
		if (heightmap->heightmap[i]) free(heightmap->heightmap[i]);

	free(heightmap);
}

void RSPTerrain_freeMesh(T_RSPTERRAIN_MESH* mesh) {
	if (mesh == NULL) return;

	if (mesh->verticesmap) free(mesh->verticesmap);

	free(mesh);
}