From d8edd3d0c87aeb5fcff4859a151e478f6f93932e Mon Sep 17 00:00:00 2001
From: Perttu Ahola <celeron55@gmail.com>
Date: Sun, 8 Apr 2012 04:01:12 +0300
Subject: [PATCH] Make lava brighter by showing light sources at their full
 emitted light level

---
 src/content_mapblock.cpp | 10 +++++++++-
 src/mapblock_mesh.cpp    | 17 +++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/src/content_mapblock.cpp b/src/content_mapblock.cpp
index 8f102cd91..3184925a4 100644
--- a/src/content_mapblock.cpp
+++ b/src/content_mapblock.cpp
@@ -210,8 +210,16 @@ void mapblock_mesh_generate_special(MeshMakeData *data,
 				top_is_same_liquid = true;
 			
 			u16 l = 0;
+			// If this liquid emits light and doesn't contain light, draw
+			// it at what it emits, for an increased effect
+			u8 light_source = nodedef->get(n).light_source;
+			if(light_source != 0){
+				//l = decode_light(undiminish_light(light_source));
+				l = decode_light(light_source);
+				l = l | (l<<8);
+			}
 			// Use the light of the node on top if possible
-			if(nodedef->get(ntop).param_type == CPT_LIGHT)
+			else if(nodedef->get(ntop).param_type == CPT_LIGHT)
 				l = getInteriorLight(ntop, 0, data);
 			// Otherwise use the light of this node (the liquid)
 			else
diff --git a/src/mapblock_mesh.cpp b/src/mapblock_mesh.cpp
index abe23855f..0e26161e2 100644
--- a/src/mapblock_mesh.cpp
+++ b/src/mapblock_mesh.cpp
@@ -183,6 +183,15 @@ static u8 getFaceLight(enum LightBank bank, MapNode n, MapNode n2,
 	else
 		light = l2;
 
+	// Boost light level for light sources
+	u8 light_source = MYMAX(ndef->get(n).light_source,
+			ndef->get(n2).light_source);
+	//if(light_source >= light)
+		//return decode_light(undiminish_light(light_source));
+	if(light_source > light)
+		//return decode_light(light_source);
+		light = light_source;
+
 	// Make some nice difference to different sides
 
 	// This makes light come from a corner
@@ -233,10 +242,13 @@ static u8 getSmoothLight(enum LightBank bank, v3s16 p, MeshMakeData *data)
 	u16 ambient_occlusion = 0;
 	u16 light = 0;
 	u16 light_count = 0;
+	u8 light_source_max = 0;
 	for(u32 i=0; i<8; i++)
 	{
 		MapNode n = data->m_vmanip.getNodeNoEx(p - dirs8[i]);
 		const ContentFeatures &f = ndef->get(n);
+		if(f.light_source > light_source_max)
+			light_source_max = f.light_source;
 		// Check f.solidness because fast-style leaves look
 		// better this way
 		if(f.param_type == CPT_LIGHT && f.solidness != 2)
@@ -255,6 +267,11 @@ static u8 getSmoothLight(enum LightBank bank, v3s16 p, MeshMakeData *data)
 	
 	light /= light_count;
 
+	// Boost brightness around light sources
+	if(decode_light(light_source_max) >= light)
+		//return decode_light(undiminish_light(light_source_max));
+		return decode_light(light_source_max);
+
 	if(ambient_occlusion > 4)
 	{
 		ambient_occlusion -= 4;