From 2c3c1f15273835923d9bd4950a19ee88a95ee0f4 Mon Sep 17 00:00:00 2001
From: Mattes D <github@xoft.cz>
Date: Thu, 11 May 2017 14:34:36 +0200
Subject: Tracer replacement (#3704)

* Replaced cTracer usage with cLineBlockTracer.

* Exported new cLineBlockTracer utility functions to Lua API.
---
 Server/Plugins/Debuggers/Debuggers.lua | 72 ++++++++++++++++++++++++++++++++++
 Server/Plugins/Debuggers/Info.lua      | 12 ++++++
 2 files changed, 84 insertions(+)

(limited to 'Server/Plugins/Debuggers')

diff --git a/Server/Plugins/Debuggers/Debuggers.lua b/Server/Plugins/Debuggers/Debuggers.lua
index 7d7246484..fb18a0c19 100644
--- a/Server/Plugins/Debuggers/Debuggers.lua
+++ b/Server/Plugins/Debuggers/Debuggers.lua
@@ -1838,6 +1838,44 @@ end
 
 
 
+function HandleConsoleHitTrace(a_Split)
+	local world = cRoot:Get():GetDefaultWorld()
+	local s = Vector3d(0, 70, 0)
+	local e = Vector3d(100, 75, 100)
+	if (tonumber(a_Split[2])) then
+		s.x = tonumber(a_Split[2])
+	end
+	if (tonumber(a_Split[3])) then
+		s.y = tonumber(a_Split[3])
+	end
+	if (tonumber(a_Split[4])) then
+		s.z = tonumber(a_Split[4])
+	end
+	if (tonumber(a_Split[5])) then
+		e.x = tonumber(a_Split[5])
+	end
+	if (tonumber(a_Split[6])) then
+		e.y = tonumber(a_Split[6])
+	end
+	if (tonumber(a_Split[7])) then
+		e.z = tonumber(a_Split[7])
+	end
+	local res, hitCoords, hitBlockCoords, hitBlockFace = cLineBlockTracer:FirstSolidHitTrace(world, s, e)
+	if (res) then
+		return true, string.format("The line hits block {%d, %d, %d} at point {%f, %f, %f}, face %s",
+			hitBlockCoords.x, hitBlockCoords.y, hitBlockCoords.z,
+			hitCoords.x, hitCoords.y, hitCoords.z,
+			BlockFaceToString(hitBlockFace)
+		)
+	else
+		return true, "The two points specified don't have a solid block between them."
+	end
+end
+
+
+
+
+
 --- Monitors the state of the "inh" entity-spawning hook
 -- if false, the hook is installed before the "inh" command processing
 local isInhHookInstalled = false
@@ -1954,6 +1992,40 @@ end
 
 
 
+function HandleConsoleLosTrace(a_Split)
+	local world = cRoot:Get():GetDefaultWorld()
+	local s = Vector3d(0, 70, 0)
+	local e = Vector3d(100, 75, 100)
+	if (tonumber(a_Split[2])) then
+		s.x = tonumber(a_Split[2])
+	end
+	if (tonumber(a_Split[3])) then
+		s.y = tonumber(a_Split[3])
+	end
+	if (tonumber(a_Split[4])) then
+		s.z = tonumber(a_Split[4])
+	end
+	if (tonumber(a_Split[5])) then
+		e.x = tonumber(a_Split[5])
+	end
+	if (tonumber(a_Split[6])) then
+		e.y = tonumber(a_Split[6])
+	end
+	if (tonumber(a_Split[7])) then
+		e.z = tonumber(a_Split[7])
+	end
+	local res = cLineBlockTracer:LineOfSightTrace(world, s, e, cLineBlockTracer.losAir)
+	if (res) then
+		return true, "The two points can see each other."
+	else
+		return true, "The two points cannot see each other"
+	end
+end
+
+
+
+
+
 function HandleConsolePluginStats(a_Split)
 	cPluginManager:ForEachPlugin(
 		function (a_CBPlugin)
diff --git a/Server/Plugins/Debuggers/Info.lua b/Server/Plugins/Debuggers/Info.lua
index 8b2e7017b..dea656837 100644
--- a/Server/Plugins/Debuggers/Info.lua
+++ b/Server/Plugins/Debuggers/Info.lua
@@ -290,6 +290,12 @@ g_PluginInfo =
 			HelpString = "Tests the crypto hashing functions",
 		},
 
+		["hittrace"] =
+		{
+			Handler = HandleConsoleHitTrace,
+			HelpString = "Tests the FirstSolidHit trace",
+		},
+
 		["inh"] =
 		{
 			Handler = HandleConsoleInh,
@@ -302,6 +308,12 @@ g_PluginInfo =
 			HelpString = "Loads the specified chunk into memory",
 		},
 
+		["lostrace"] =
+		{
+			Handler = HandleConsoleLosTrace,
+			HelpString = "Tests a LineOfSight trace",
+		},
+
 		["pluginstats"] =
 		{
 			Handler = HandleConsolePluginStats,
-- 
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