From 3522593087c5e9037b56b5214099c466cbe9ee61 Mon Sep 17 00:00:00 2001
From: Jon Bergli Heier <snakebite@jvnv.net>
Date: Sun, 8 May 2011 19:32:07 +0200
Subject: Fixed Terrain::raise().

---
 terrain.cpp | 72 ++++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 48 insertions(+), 24 deletions(-)

diff --git a/terrain.cpp b/terrain.cpp
index a6f1e66..b9927b4 100644
--- a/terrain.cpp
+++ b/terrain.cpp
@@ -5,6 +5,7 @@
 
 #include <noise/noise.h>
 #include "noiseutils/noiseutils.h"
+#include <boost/format.hpp>
 
 #include <iostream>
 #include <cmath>
@@ -475,57 +476,80 @@ bool Terrain::has_chunk(int x, int y) {
 }
 
 void Terrain::raise(float x, float z, float radius, float focus, float strength, bool up) {
-	// TODO: fix this
-/*	if(x < 0 || x >= width-1 || z < 0 || z >= height-1)
-		return;
+	// TODO: check nodes
 
 	/* adjust heights */
-	/*for(int i = x-radius; i < x+radius; i++) {
-		if(i < 0 || i >= width-1)
-			continue;
+	for(int i = x-radius; i < x+radius; i++) {
 		for(int j = z-radius; j < z+radius; j++) {
-			if(j < 0 || j >= height-1)
-				continue;
 			float v = powf((radius - min((Vector2(x, z) - Vector2(i, j)).length(), radius)) * strength, 1+focus);
 
 			if(focus > 0)
 				/* Scale v with radius based on focus.
 				 * Not 100% accurate, but close enough.
 				 */
-				/*v /= radius * (focus/2);
+				v /= radius * (focus/2);
 
+			Node *node = find(i, j);
+			int index = (i-node->chunk->x)*(node->chunk->height+1) + j-node->chunk->y;
 			if(up)
-				heights[i*height + j] += v;
+				node->chunk->heights[index] += v;
 			else
-				heights[i*height + j] -= v;
+				node->chunk->heights[index] -= v;
+
+			/* fill the "outer border" */
+			if(i % chunk_size == 0) {
+				node = find(i-chunk_size, j);
+				if(node) {
+					index = (chunk_size)*(node->chunk->height+1) + j-node->chunk->y;
+					if(up)
+						node->chunk->heights[index] += v;
+					else
+						node->chunk->heights[index] -= v;
+				}
+			}
+			if(j % chunk_size == 0) {
+				node = find(i, j-chunk_size);
+				if(node) {
+					index = (i-node->chunk->x)*(node->chunk->height+1) + chunk_size;
+					if(up)
+						node->chunk->heights[index] += v;
+					else
+						node->chunk->heights[index] -= v;
+				}
+			}
+			if(i % chunk_size == 0 && j % chunk_size == 0) {
+				node = find(i-chunk_size, j-chunk_size);
+				if(node) {
+					index = (chunk_size)*(node->chunk->height+1) + chunk_size;
+					if(up)
+						node->chunk->heights[index] += v;
+					else
+						node->chunk->heights[index] -= v;
+				}
+			}
 		}
 	}
 
 	/* recalculate normals */
-	/*for(int i = x-radius-1; i < x+radius; i++) {
-		if(i < 0 || i >= width-1)
-			continue;
-		for(int j = z-radius-1; j < z+radius; j++) {
-			if(j < 0 || j >= height-1)
-				continue;
-			calc_normal(i, j);
+	for(int i = x-radius-1; i < x+radius; i+=chunk_size) {
+		for(int j = z-radius-1; j < z+radius; j+=chunk_size) {
+			find(i, j)->chunk->calc_normals();
 		}
 	}
 
 	/* refill nodes and remake VBOs */
-	/*for(int nx = x-radius-1; nx < x+radius+chunk_size; nx+=chunk_size) {
-		if(nx < 0 || nx >= width-1)
-			continue;
+	for(int nx = x-radius-1; nx < x+radius+chunk_size; nx+=chunk_size) {
 		for(int nz = z-radius-1; nz < z+radius+chunk_size; nz+=chunk_size) {
-			if(nz < 0 || nz >= height-1)
-				continue;
 			Node *node = find(nx, nz);
+			if(!node) {
+				continue;
+			}
 			for(unsigned int i = 0; i < node->chunk->node_count; i++) {
 				node->chunk->nodes[i]->fill();
 			}
 			node->chunk->make_vbo();
 		}
-	}*/
+	}
 }
 
 void Terrain::update(float x, float z) {
-- 
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