RMS.LoadLibrary("rmgen");

TILE_CENTERED_HEIGHT_MAP = true;
//random terrain textures
var random_terrain = randomizeBiome();

const tMainTerrain = rBiomeT1();
const tForestFloor1 = rBiomeT2();
const tForestFloor2 = rBiomeT3();
const tCliff = rBiomeT4();
const tTier1Terrain = rBiomeT5();
const tTier2Terrain = rBiomeT6();
const tTier3Terrain = rBiomeT7();
const tHill = rBiomeT8();
const tDirt = rBiomeT9();
const tRoad = rBiomeT10();
const tRoadWild = rBiomeT11();
const tTier4Terrain = rBiomeT12();
const tShoreBlend = rBiomeT13();
const tShore = rBiomeT14();
const tWater = rBiomeT15();

// gaia entities
const oTree1 = rBiomeE1();
const oTree2 = rBiomeE2();
const oTree3 = rBiomeE3();
const oTree4 = rBiomeE4();
const oTree5 = rBiomeE5();
const oFruitBush = rBiomeE6();
const oChicken = rBiomeE7();
const oMainHuntableAnimal = rBiomeE8();
const oFish = rBiomeE9();
const oSecondaryHuntableAnimal = rBiomeE10();
const oStoneLarge = rBiomeE11();
const oStoneSmall = rBiomeE12();
const oMetalLarge = rBiomeE13();
const oWood = "gaia/special_treasure_wood";

// decorative props
const aGrass = rBiomeA1();
const aGrassShort = rBiomeA2();
const aReeds = rBiomeA3();
const aLillies = rBiomeA4();
const aRockLarge = rBiomeA5();
const aRockMedium = rBiomeA6();
const aBushMedium = rBiomeA7();
const aBushSmall = rBiomeA8();

const pForest1 = [tForestFloor2 + TERRAIN_SEPARATOR + oTree1, tForestFloor2 + TERRAIN_SEPARATOR + oTree2, tForestFloor2];
const pForest2 = [tForestFloor1 + TERRAIN_SEPARATOR + oTree4, tForestFloor1 + TERRAIN_SEPARATOR + oTree5, tForestFloor1];
const BUILDING_ANGlE = -PI/4;

// initialize map

log("Initializing map...");

InitMap();

const numPlayers = getNumPlayers();
const mapSize = getMapSize();
const mapArea = mapSize*mapSize;

// create tile classes
var clPlayer = createTileClass();
var clHill = createTileClass();
var clForest = createTileClass();
var clWater = createTileClass();
var clDirt = createTileClass();
var clRock = createTileClass();
var clMetal = createTileClass();
var clFood = createTileClass();
var clBaseResource = createTileClass();
var clSettlement = createTileClass();
var clLand = createTileClass();

// randomize player order
var playerIDs = [];
for (var i = 0; i < numPlayers; i++)
{
	playerIDs.push(i+1);
}
playerIDs = sortPlayers(playerIDs);

// place players
var playerX = new Array(numPlayers);
var playerZ = new Array(numPlayers);
var playerAngle = new Array(numPlayers);

var startAngle = randFloat(0, TWO_PI);
for (var i = 0; i < numPlayers; i++)
{
	playerAngle[i] = startAngle + i*TWO_PI/numPlayers;
	playerX[i] = 0.5 + 0.35*cos(playerAngle[i]);
	playerZ[i] = 0.5 + 0.35*sin(playerAngle[i]);
}

for (var i = 0; i < numPlayers; i++)
{
	var id = playerIDs[i];
	log("Creating base for player " + id + "...");
	
	// some constants
	var radius = scaleByMapSize(20,29);
	var shoreRadius = 6;
	var elevation = 3;

	var hillSize = PI * radius * radius;
	// get the x and z in tiles
	var fx = fractionToTiles(playerX[i]);
	var fz = fractionToTiles(playerZ[i]);
	var ix = round(fx);
	var iz = round(fz);
	// create the hill
	var placer = new ClumpPlacer(hillSize, 0.80, 0.1, 10, ix, iz);
	var terrainPainter = new LayeredPainter(
		[tMainTerrain , tMainTerrain, tMainTerrain],		// terrains
		[1, shoreRadius]		// widths
	);
	var elevationPainter = new SmoothElevationPainter(
		ELEVATION_SET,			// type
		elevation,				// elevation
		shoreRadius				// blend radius
	);
	createArea(placer, [terrainPainter, elevationPainter, paintClass(clPlayer)], null);
	
	// create starting units
	placeCivDefaultEntities(fx, fz, id, BUILDING_ANGlE, {'iberWall' : 'towers'});
	
	// create animals
	for (var j = 0; j < 2; ++j)
	{
		var aAngle = randFloat(0, TWO_PI);
		var aDist = 7;
		var aX = round(fx + aDist * cos(aAngle));
		var aZ = round(fz + aDist * sin(aAngle));
		var group = new SimpleGroup(
			[new SimpleObject(oChicken, 5,5, 0,2)],
			true, clBaseResource, aX, aZ
		);
		createObjectGroup(group, 0);
	}
	
	// create berry bushes
	var bbAngle = randFloat(0, TWO_PI);
	var bbDist = 12;
	var bbX = round(fx + bbDist * cos(bbAngle));
	var bbZ = round(fz + bbDist * sin(bbAngle));
	group = new SimpleGroup(
		[new SimpleObject(oFruitBush, 5,5, 0,3)],
		true, clBaseResource, bbX, bbZ
	);
	createObjectGroup(group, 0);
	
	// create woods
	var bbAngle = randFloat(0, TWO_PI);
	var bbDist = 13;
	var bbX = round(fx + bbDist * cos(bbAngle));
	var bbZ = round(fz + bbDist * sin(bbAngle));
	group = new SimpleGroup(
		[new SimpleObject(oWood, 14,14, 0,3)],
		true, clBaseResource, bbX, bbZ
	);
	createObjectGroup(group, 0);
	
	// create metal mine
	var mAngle = bbAngle;
	while(abs(mAngle - bbAngle) < PI/3)
	{
		mAngle = randFloat(0, TWO_PI);
	}
	var mDist = 12;
	var mX = round(fx + mDist * cos(mAngle));
	var mZ = round(fz + mDist * sin(mAngle));
	group = new SimpleGroup(
		[new SimpleObject(oMetalLarge, 1,1, 0,0)],
		true, clBaseResource, mX, mZ
	);
	createObjectGroup(group, 0);
	
	// create stone mines
	mAngle += randFloat(PI/8, PI/4);
	mX = round(fx + mDist * cos(mAngle));
	mZ = round(fz + mDist * sin(mAngle));
	group = new SimpleGroup(
		[new SimpleObject(oStoneLarge, 1,1, 0,2)],
		true, clBaseResource, mX, mZ
	);
	createObjectGroup(group, 0);
	var hillSize = PI * radius * radius;
	// create starting trees
	var num = 5;
	var tAngle = randFloat(-PI/3, 4*PI/3);
	var tDist = randFloat(12, 13);
	var tX = round(fx + tDist * cos(tAngle));
	var tZ = round(fz + tDist * sin(tAngle));
	group = new SimpleGroup(
		[new SimpleObject(oTree1, num, num, 0,3)],
		false, clBaseResource, tX, tZ
	);
	createObjectGroup(group, 0, avoidClasses(clBaseResource,2));
	
	// create grass tufts
	var num = hillSize / 250;
	for (var j = 0; j < num; j++)
	{
		var gAngle = randFloat(0, TWO_PI);
		var gDist = radius - (5 + randInt(7));
		var gX = round(fx + gDist * cos(gAngle));
		var gZ = round(fz + gDist * sin(gAngle));
		group = new SimpleGroup(
			[new SimpleObject(aGrassShort, 2,5, 0,1, -PI/8,PI/8)],
			false, clBaseResource, gX, gZ
		);
		createObjectGroup(group, 0);
	}
	
	//create docks
	var dockLocation = getTIPIADBON([ix, iz], [mapSize / 2, mapSize / 2], [-3 , 2.6], 0.5, 3);
	if (dockLocation !== undefined)
		placeObject(dockLocation[0], dockLocation[1], "structures/" + g_MapSettings.PlayerData[id-1].Civ + "_dock", id, playerAngle[i] + PI);
}

var landAreas = [];
var playerConstraint = new AvoidTileClassConstraint(clPlayer, floor(scaleByMapSize(12,16)));
var landConstraint = new AvoidTileClassConstraint(clLand, floor(scaleByMapSize(12,16)));

for (var x = 0; x < mapSize; ++x)
	for (var z = 0; z < mapSize; ++z)
		if (playerConstraint.allows(x, z) && landConstraint.allows(x, z))
			landAreas.unshift([x, z]);

var chosenPoint;
var landAreLen;

log("Creating big islands...");
var numIslands = scaleByMapSize(4, 14)
for (var i = 0; i < numIslands; ++i)
{
	landAreLen = landAreas.length;
	if (!landAreLen)
		break;
	
	chosenPoint = landAreas[randInt(0, landAreLen)];
	
	// create big islands
	placer = new ChainPlacer(floor(scaleByMapSize(4, 8)), floor(scaleByMapSize(8, 14)), floor(scaleByMapSize(25, 60)), 0.07, chosenPoint[0], chosenPoint[1], scaleByMapSize(30,70));
	//placer = new ClumpPlacer(floor(hillSize*randFloat(0.9,2.1)), 0.80, 0.1, 0.07, chosenPoint[0], chosenPoint[1]);
	terrainPainter = new LayeredPainter(
		[tMainTerrain, tMainTerrain],		// terrains
		[2]								// widths
	);
	elevationPainter = new SmoothElevationPainter(ELEVATION_SET, 3, 6);
	var newIsland = createAreas(
		placer,
		[terrainPainter, elevationPainter, paintClass(clLand)], 
		avoidClasses(clLand, 3, clPlayer, 3),
		1, 1
	);
	if (newIsland !== undefined)
	{
		var temp = []
		for (var j = 0; j < landAreLen; ++j)
		{
			var x = landAreas[j][0], z = landAreas[j][1];
			if (playerConstraint.allows(x, z) && landConstraint.allows(x, z))
					temp.push([x, z]);
		}
		landAreas = temp;
	}
}

playerConstraint = new AvoidTileClassConstraint(clPlayer, floor(scaleByMapSize(9,12)));
landConstraint = new AvoidTileClassConstraint(clLand, floor(scaleByMapSize(9,12)));

log("Creating small islands...");
numIslands = scaleByMapSize(6, 18)*scaleByMapSize(1,3)
for (var i = 0; i < numIslands; ++i)
{
	landAreLen = landAreas.length;
	if (!landAreLen)
		break;
	
	chosenPoint = landAreas[randInt(0, landAreLen)];
	
	placer = new ChainPlacer(floor(scaleByMapSize(4, 7)), floor(scaleByMapSize(7, 10)), floor(scaleByMapSize(16, 40)), 0.07, chosenPoint[0], chosenPoint[1], scaleByMapSize(22,40));
	terrainPainter = new LayeredPainter(
		[tMainTerrain, tMainTerrain],		// terrains
		[2]								// widths
	);
	elevationPainter = new SmoothElevationPainter(ELEVATION_SET, 3, 6);
	createAreas(
		placer,
		[terrainPainter, elevationPainter, paintClass(clLand)], 
		avoidClasses(clLand, 3, clPlayer, 3),
		1, 1
	);
	if (newIsland !== undefined)
	{
		var temp = []
		for (var j = 0; j < landAreLen; ++j)
		{
			var x = landAreas[j][0], z = landAreas[j][1];
			if (playerConstraint.allows(x, z) && landConstraint.allows(x, z))
					temp.push([x, z]);
		}
		landAreas = temp;
	}
}
paintTerrainBasedOnHeight(1, 3, 0, tShore);
paintTerrainBasedOnHeight(-8, 1, 2, tWater);

for (var i = 0; i < numPlayers; i++)
{
	var fx = fractionToTiles(playerX[i]);
	var fz = fractionToTiles(playerZ[i]);
	var ix = round(fx);
	var iz = round(fz);
	// create the city patch
	var cityRadius = radius/3;
	placer = new ClumpPlacer(PI*cityRadius*cityRadius, 0.6, 0.3, 10, ix, iz);
	var painter = new LayeredPainter([tRoadWild, tRoad], [1]);
	createArea(placer, painter, null);
}

// create bumps
log("Creating bumps...");
placer = new ClumpPlacer(scaleByMapSize(20, 50), 0.3, 0.06, 1);
painter = new SmoothElevationPainter(ELEVATION_MODIFY, 2, 2);
createAreas(
	placer,
	painter, 
	[avoidClasses(clWater, 2, clPlayer, 0), stayClasses(clLand, 3)],
	scaleByMapSize(20, 100)
);

// create hills
log("Creating hills...");
placer = new ChainPlacer(1, floor(scaleByMapSize(4, 6)), floor(scaleByMapSize(16, 40)), 1);
terrainPainter = new LayeredPainter(
	[tCliff, tHill],		// terrains
	[2]								// widths
);
elevationPainter = new SmoothElevationPainter(ELEVATION_SET, 18, 2);
createAreas(
	placer,
	[terrainPainter, elevationPainter, paintClass(clHill)], 
	[avoidClasses(clPlayer, 2, clHill, 15), stayClasses(clLand, 0)],
	scaleByMapSize(4, 13)
);


// calculate desired number of trees for map (based on size)
if (random_terrain == 6)
{
	var MIN_TREES = 200;
	var MAX_TREES = 1250;
	var P_FOREST = 0;
}
else if (random_terrain == 7)
{
	var MIN_TREES = 1000;
	var MAX_TREES = 6000;
	var P_FOREST = 0.52;
}
else
{
	var MIN_TREES = 500;
	var MAX_TREES = 3000;
	var P_FOREST = 0.7;
}
var totalTrees = scaleByMapSize(MIN_TREES, MAX_TREES);
var numForest = totalTrees * P_FOREST;
var numStragglers = totalTrees * (1.0 - P_FOREST);

// create forests
log("Creating forests...");
var types = [
	[[tForestFloor2, tMainTerrain, pForest1], [tForestFloor2, pForest1]],
	[[tForestFloor1, tMainTerrain, pForest2], [tForestFloor1, pForest2]]
];	// some variation

if (random_terrain != 6)
{
	var size = numForest / (scaleByMapSize(3,6) * numPlayers);
	var num = floor(size / types.length);
	for (var i = 0; i < types.length; ++i)
	{
		placer = new ChainPlacer(1, floor(scaleByMapSize(3, 5)), numForest / (num * floor(scaleByMapSize(2,5))), 0.5);
		painter = new LayeredPainter(
			types[i],		// terrains
			[2]											// widths
			);
		createAreas(
			placer,
			[painter, paintClass(clForest)], 
			[avoidClasses(clPlayer, 0, clForest, 10, clHill, 0), stayClasses(clLand, 6)],
			num
		);
	}
}

RMS.SetProgress(50);
// create dirt patches
log("Creating dirt patches...");
var sizes = [scaleByMapSize(3, 6), scaleByMapSize(5, 10), scaleByMapSize(8, 21)];
var numb = 1;
if (random_terrain == 6)
	numb = 3
for (var i = 0; i < sizes.length; i++)
{
	placer = new ChainPlacer(1, floor(scaleByMapSize(3, 5)), sizes[i], 0.5);
	painter = new LayeredPainter(
		[[tMainTerrain,tTier1Terrain],[tTier1Terrain,tTier2Terrain], [tTier2Terrain,tTier3Terrain]], 		// terrains
		[1,1]															// widths
	);
	createAreas(
		placer,
		[painter, paintClass(clDirt)],
		[avoidClasses(clForest, 0, clHill, 0, clDirt, 5, clPlayer, 0), stayClasses(clLand, 6)],
		numb*scaleByMapSize(15, 45)
	);
}

// create grass patches
log("Creating grass patches...");
var sizes = [scaleByMapSize(2, 4), scaleByMapSize(3, 7), scaleByMapSize(5, 15)];
for (var i = 0; i < sizes.length; i++)
{
	placer = new ChainPlacer(1, floor(scaleByMapSize(3, 5)), sizes[i], 0.5);
	painter = new TerrainPainter(tTier4Terrain);
	createAreas(
		placer,
		painter,
		[avoidClasses(clForest, 0, clHill, 0, clDirt, 5, clPlayer, 0), stayClasses(clLand, 6)],
		numb*scaleByMapSize(15, 45)
	);
}
RMS.SetProgress(55);


log("Creating stone mines...");
// create large stone quarries
group = new SimpleGroup([new SimpleObject(oStoneSmall, 0,2, 0,4), new SimpleObject(oStoneLarge, 1,1, 0,4)], true, clRock);
createObjectGroups(group, 0,
	[avoidClasses(clForest, 1, clPlayer, 0, clRock, 10, clHill, 1), stayClasses(clLand, 5)],
	scaleByMapSize(4,16), 100
);

// create small stone quarries
group = new SimpleGroup([new SimpleObject(oStoneSmall, 2,5, 1,3)], true, clRock);
createObjectGroups(group, 0,
	[avoidClasses(clForest, 1, clPlayer, 0, clRock, 10, clHill, 1), stayClasses(clLand, 5)],
	scaleByMapSize(4,16), 100
);

log("Creating metal mines...");
// create large metal quarries
group = new SimpleGroup([new SimpleObject(oMetalLarge, 1,1, 0,4)], true, clMetal);
createObjectGroups(group, 0,
	[avoidClasses(clForest, 1, clPlayer, 0, clMetal, 10, clRock, 5, clHill, 1), stayClasses(clLand, 5)],
	scaleByMapSize(4,16), 100
);

RMS.SetProgress(65);

// create small decorative rocks
log("Creating small decorative rocks...");
group = new SimpleGroup(
	[new SimpleObject(aRockMedium, 1,3, 0,1)],
	true
);
createObjectGroups(
	group, 0,
	[avoidClasses(clWater, 0, clForest, 0, clPlayer, 0, clHill, 0), stayClasses(clLand, 5)],
	scaleByMapSize(16, 262), 50
);


// create large decorative rocks
log("Creating large decorative rocks...");
group = new SimpleGroup(
	[new SimpleObject(aRockLarge, 1,2, 0,1), new SimpleObject(aRockMedium, 1,3, 0,2)],
	true
);
createObjectGroups(
	group, 0,
	[avoidClasses(clWater, 0, clForest, 0, clPlayer, 0, clHill, 0), stayClasses(clLand, 5)],
	scaleByMapSize(8, 131), 50
);

RMS.SetProgress(70);

// create deer
log("Creating deer...");
group = new SimpleGroup(
	[new SimpleObject(oMainHuntableAnimal, 5,7, 0,4)],
	true, clFood
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 0, clForest, 0, clPlayer, 0, clHill, 1, clFood, 20), stayClasses(clLand, 5)],
	3 * numPlayers, 50
);

RMS.SetProgress(75);

// create sheep
log("Creating sheep...");
group = new SimpleGroup(
	[new SimpleObject(oSecondaryHuntableAnimal, 2,3, 0,2)],
	true, clFood
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 0, clForest, 0, clPlayer, 0, clHill, 1, clFood, 20), stayClasses(clLand, 5)],
	3 * numPlayers, 50
);

// create fruit bush
log("Creating fruit bush...");
group = new SimpleGroup(
	[new SimpleObject(oFruitBush, 5,7, 0,4)],
	true, clFood
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 0, clForest, 0, clPlayer, 8, clHill, 1, clFood, 20), stayClasses(clLand, 5)],
	randInt(1, 4) * numPlayers + 2, 50
);

// create fish
log("Creating fish...");
group = new SimpleGroup(
	[new SimpleObject(oFish, 2,3, 0,2)],
	true, clFood
);
createObjectGroups(group, 0,
	avoidClasses(clLand, 4, clForest, 0, clPlayer, 0, clHill, 0, clFood, 20),
	25 * numPlayers, 60
);

RMS.SetProgress(85);


// create straggler trees
log("Creating straggler trees...");
var types = [oTree1, oTree2, oTree4, oTree3];	// some variation
var num = floor(numStragglers / types.length);
for (var i = 0; i < types.length; ++i)
{
	group = new SimpleGroup(
		[new SimpleObject(types[i], 1,1, 0,3)],
		true, clForest
	);
	createObjectGroups(group, 0,
		[avoidClasses(clWater, 1, clForest, 1, clHill, 1, clPlayer, 0, clMetal, 1, clRock, 1), stayClasses(clLand, 6)],
		num
	);
}

var planetm = 1;
if (random_terrain==7)
{
	planetm = 8;
}
//create small grass tufts
log("Creating small grass tufts...");
group = new SimpleGroup(
	[new SimpleObject(aGrassShort, 1,2, 0,1, -PI/8,PI/8)]
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 2, clHill, 2, clPlayer, 2, clDirt, 0), stayClasses(clLand, 6)],
	planetm * scaleByMapSize(13, 200)
);

RMS.SetProgress(90);

// create large grass tufts
log("Creating large grass tufts...");
group = new SimpleGroup(
	[new SimpleObject(aGrass, 2,4, 0,1.8, -PI/8,PI/8), new SimpleObject(aGrassShort, 3,6, 1.2,2.5, -PI/8,PI/8)]
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 3, clHill, 2, clPlayer, 2, clDirt, 1, clForest, 0), stayClasses(clLand, 5)],
	planetm * scaleByMapSize(13, 200)
);

RMS.SetProgress(95);

// create bushes
log("Creating bushes...");
group = new SimpleGroup(
	[new SimpleObject(aBushMedium, 1,2, 0,2), new SimpleObject(aBushSmall, 2,4, 0,2)]
);
createObjectGroups(group, 0,
	[avoidClasses(clWater, 1, clHill, 1, clPlayer, 1, clDirt, 1), stayClasses(clLand, 6)],
	planetm * scaleByMapSize(13, 200), 50
);

random_terrain = randInt(1,3)
if (random_terrain==1){
	setSkySet("cirrus");
}
else if (random_terrain ==2){
	setSkySet("cumulus");
}
else if (random_terrain ==3){
	setSkySet("sunny");
}
setSunRotation(randFloat(0, TWO_PI));
setSunElevation(randFloat(PI/ 5, PI / 3));

// Export map data
ExportMap();