#include "height.h"



u_long CreateTileTMD(long h1, long h2, long h3, long h4)
{
	static u_long firstStart=0;
	u_long returnValue;

	// set position of vertices
	TMD_setVERTEX(&tile[0].vert[0], -TILE_LENGTH, h1, TILE_WIDTH);
	TMD_setVERTEX(&tile[0].vert[1],  TILE_LENGTH, h2, TILE_WIDTH);
	TMD_setVERTEX(&tile[0].vert[2],  TILE_LENGTH, h3,-TILE_WIDTH);
	TMD_setVERTEX(&tile[0].vert[3], -TILE_LENGTH, h4,-TILE_WIDTH);

	// set colour to be used.
	TMD_setCOLOUR(&tile[0].col[0], 255,255,0);
	TMD_setCOLOUR(&tile[0].col[1], 255,0,0);
	TMD_setCOLOUR(&tile[0].col[2], 0,255,0);
	TMD_setCOLOUR(&tile[0].col[3], 0,255,255);

	if(firstStart == 0)
	{
		TMD_prepare(FREE_MEM, &tile[0].vert[0], &tile[0].col[0],0);
		firstStart = 1;
	}
	else
	{
		TMD_prepare(0, &tile[0].vert[0], &tile[0].col[0],0);
	}

	//create face
	TMD_set4_NS_GP(0,1,3,2,0,1,2,3);

	// finish
	returnValue = TMD_finish();
	return(returnValue);

}

void CreateTileModels()
{
    long index,x=0,z=0;

    for(index = 0; index < MAP_AREA; index++)
    {
      InitialiseModel(&tileModel[index],x*(TILE_LENGTH<<1),0,
			z*(TILE_WIDTH<<1),DYNAMIC_TMD[index]);

      if(index !=0)tileModel[index].Object_Coord.super = &tileModel[0].Object_Coord;

      if(++x >= MAP_LENGTH){ z++; x=0; }
    }
}

void SetupMap()
{
	long index,x=0,z=0;

	SetHeights();

	//create TMDs
	for(index=0; index < MAP_AREA; index++)
	{
	   DYNAMIC_TMD[index] =(u_long*) CreateTileTMD(heightFields[x][z+1],
						       heightFields[x+1][z+1],
						       heightFields[x+1][z],
						       heightFields[x][z]);
	   if(++x >= MAP_LENGTH){ z++; x=0; }
	}

	// setup models
	CreateTileModels();

}

void RotateMap(long x, long y, long z)
{
	RotateModelMatrix(&tileModel[0].Object_Coord,x,y,z);
}

void DrawMap()
{
	long index;

	// may need to roll out for more speed.
	for(index=0; index < MAP_AREA; index++)
	{
		DrawObject(&tileModel[index]);
	}
}

void SetHeights()
{
   heightFields[0][0] = 0;
   heightFields[0][1] = 0;
   heightFields[0][2] = 0;
   heightFields[0][3] = -100;
   heightFields[0][4] = 0;
   heightFields[0][5] = 0;
   heightFields[0][6] = 0;
   heightFields[0][7] = 0;
   heightFields[0][8] = 0;
   heightFields[0][9] = 0;
   heightFields[1][0] = 0;
   heightFields[1][1] = 0;
   heightFields[1][2] = -100;
   heightFields[1][3] = 0;
   heightFields[1][4] = 0;
   heightFields[1][5] = 0;
   heightFields[1][6] = -100;
   heightFields[1][7] = 0;
   heightFields[1][8] = 0;
   heightFields[1][9] = 0;
   heightFields[2][0] = 0;
   heightFields[2][1] = 0;
   heightFields[2][2] = -100;
   heightFields[2][3] = 0;
   heightFields[2][4] = 0;
   heightFields[2][5] = 0;
   heightFields[2][6] = 0;
   heightFields[2][7] = 0;
   heightFields[2][8] = 0;
   heightFields[2][9] = 0;
   heightFields[3][0] = 0;
   heightFields[3][1] = 0;
   heightFields[3][2] = -100;
   heightFields[3][3] = 0;
   heightFields[3][4] = 0;
   heightFields[3][5] = 0;
   heightFields[3][6] = -100;
   heightFields[3][7] = 0;
   heightFields[3][8] = 0;
   heightFields[3][9] = 0;
   heightFields[4][0] = 0;
   heightFields[4][1] = 0;
   heightFields[4][2] = -100;
   heightFields[4][3] = 0;
   heightFields[4][4] = 0;
   heightFields[4][5] = 0;
   heightFields[4][6] = 0;
   heightFields[4][7] = 0;
   heightFields[4][8] = 0;
   heightFields[4][9] = 0;
   heightFields[5][0] = 0;
   heightFields[5][1] = 0;
   heightFields[5][2] = -100;
   heightFields[5][3] = 0;
   heightFields[5][4] = 0;
   heightFields[5][5] = 0;
   heightFields[5][6] = -100;
   heightFields[5][7] = 0;
   heightFields[5][8] = 0;
   heightFields[5][9] = 0;
   heightFields[6][0] = 0;
   heightFields[6][1] = 0;
   heightFields[6][2] = -100;
   heightFields[6][3] = 0;
   heightFields[6][4] = 0;
   heightFields[6][5] = 0;
   heightFields[6][6] = 0;
   heightFields[6][7] = 0;
   heightFields[6][8] = 0;
   heightFields[6][9] = 0;
   heightFields[7][0] = 0;
   heightFields[7][1] = 0;
   heightFields[7][2] = -100;
   heightFields[7][3] = 0;
   heightFields[7][4] = 0;
   heightFields[7][5] = 0;
   heightFields[7][6] = -100;
   heightFields[7][7] = 0;
   heightFields[7][8] = 0;
   heightFields[7][9] = 0;
   heightFields[8][0] = 0;
   heightFields[8][1] = 0;
   heightFields[8][2] = -100;
   heightFields[8][3] = 0;
   heightFields[8][4] = 0;
   heightFields[8][5] = 0;
   heightFields[8][6] = 0;
   heightFields[8][7] = 0;
   heightFields[8][8] = 0;
   heightFields[8][9] = 0;
   heightFields[9][0] = 0;
   heightFields[9][1] = 0;
   heightFields[9][2] = -100;
   heightFields[9][3] = 0;
   heightFields[9][4] = 0;
   heightFields[9][5] = 0;
   heightFields[9][6] = -100;
   heightFields[9][7] = 0;
   heightFields[9][8] = 0;
   heightFields[9][9] = 0;

}