From 1ff1a93866ab81e3868588a256f446a902a1a8c4 Mon Sep 17 00:00:00 2001
From: madmaxoft <github@xoft.cz>
Date: Tue, 10 Jun 2014 22:59:45 +0200
Subject: Initial Mesa Bryce implementation.

---
 src/Generating/HeiGen.cpp | 89 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 89 insertions(+)

(limited to 'src/Generating/HeiGen.cpp')

diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp
index 25ac912fd..dedf3fe3f 100644
--- a/src/Generating/HeiGen.cpp
+++ b/src/Generating/HeiGen.cpp
@@ -47,6 +47,10 @@ cTerrainHeightGen * cTerrainHeightGen::CreateHeightGen(cIniFile &a_IniFile, cBio
 	{
 		res = new cEndGen(a_Seed);
 	}
+	else if (NoCaseCompare(HeightGenName, "MesaBryce") == 0)
+	{
+		res = new cHeiGenMesaBryce(a_Seed);
+	}
 	else if (NoCaseCompare(HeightGenName, "Mountains") == 0)
 	{
 		res = new cHeiGenMountains(a_Seed);
@@ -366,6 +370,91 @@ void cHeiGenMountains::InitializeHeightGen(cIniFile & a_IniFile)
 
 
 
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cHeiGenMesaBryce:
+
+cHeiGenMesaBryce::cHeiGenMesaBryce(int a_Seed) :
+	m_Seed(a_Seed),
+	m_PerlinHFHA(a_Seed),
+	m_PerlinLFLA(a_Seed + 10)
+{
+}
+
+
+
+
+
+void cHeiGenMesaBryce::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
+{
+	NOISE_DATATYPE StartX = (NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width);
+	NOISE_DATATYPE EndX   = (NOISE_DATATYPE)(a_ChunkX * cChunkDef::Width + cChunkDef::Width - 1);
+	NOISE_DATATYPE StartZ = (NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width);
+	NOISE_DATATYPE EndZ   = (NOISE_DATATYPE)(a_ChunkZ * cChunkDef::Width + cChunkDef::Width - 1);
+	NOISE_DATATYPE Workspace[16 * 16];
+	NOISE_DATATYPE Noise1[16 * 16];
+	NOISE_DATATYPE Noise2[16 * 16];
+	NOISE_DATATYPE Noise3[16 * 16];
+	m_PerlinHFHA.Generate2D(Noise1, 16, 16, StartX, EndX, StartZ, EndZ, Workspace);
+	m_PerlinLFLA.Generate2D(Noise2, 16, 16, StartX, EndX, StartZ, EndZ, Workspace);
+	m_PerlinTops.Generate2D(Noise3, 16, 16, StartX, EndX, StartZ, EndZ, Workspace);
+	for (int z = 0; z < cChunkDef::Width; z++)
+	{
+		int IdxZ = z * cChunkDef::Width;
+		for (int x = 0; x < cChunkDef::Width; x++)
+		{
+			int idx = IdxZ + x;
+			// int hei = 70 + (int)(std::min(Noise1[idx], Noise2[idx]) * 15);
+			int hei;
+			if (Noise1[idx] > 1.5f)
+			{
+				hei = 83 + (int)floor(Noise3[idx]);
+			}
+			else
+			{
+				hei = 63 + (int)floor(Noise2[idx]);
+			}
+			/*
+			NOISE_DATATYPE v1 = sqrt(sqrt(std::max(Noise1[idx], (NOISE_DATATYPE)0))) - 50;
+			int hei = 60 + (int)floor(std::max(v1, 5 + Noise2[idx]));
+			*/
+			if (hei < 10)
+			{
+				hei = 10;
+			}
+			if (hei > 250)
+			{
+				hei = 250;
+			}
+			cChunkDef::SetHeight(a_HeightMap, x , z, hei);
+		}  // for x
+	}  // for z
+}
+
+
+
+
+
+void cHeiGenMesaBryce::InitializeHeightGen(cIniFile & a_IniFile)
+{
+	// TODO: Read the params from an INI file
+	// m_PerlinHFHA.AddOctave(0.32f, 0.1);
+	/*
+	m_PerlinHFHA.AddOctave(0.13f, 17800000);
+	m_PerlinHFHA.AddOctave(0.12f, 19000000);
+	*/
+	m_PerlinHFHA.AddOctave(0.13f, 2);
+	m_PerlinHFHA.AddOctave(0.12f, 2);
+
+	m_PerlinLFLA.AddOctave(0.04f, 1);
+	m_PerlinLFLA.AddOctave(0.02f, 2);
+
+	m_PerlinTops.AddOctave(0.1f, 8);
+}
+
+
+
+
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 // cHeiGenBiomal:
 
-- 
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