1 files changed, 109 insertions, 0 deletions
diff --git a/MCServer/Plugins/ProtectionAreas/PlayerAreas.lua b/MCServer/Plugins/ProtectionAreas/PlayerAreas.lua
new file mode 100644
index 000000000..f6106ee77
--- /dev/null
+++ b/MCServer/Plugins/ProtectionAreas/PlayerAreas.lua
@@ -0,0 +1,109 @@
+
+-- PlayerAreas.lua
+-- Implements the cPlayerAreas class representing the per-player area storage object
+
+--[[
+Each player instance is expected to have a separate object of type cPlayerAreas.
+Each object has an array of {cuboid, IsAllowed} tables, one for each area that is "within reach"
+The code can then ask each object, whether the player can interact with a certain block or not.
+A player can interact with a block if either one of these is true:
+1, There are no areas covering the block
+2, There is at least one area covering the block with IsAllowed set to true
+The object also has a m_SafeCuboid object that specified the area within which the player may move
+without the PlayerAreas needing a re-query.
+
+Also, a global table g_PlayerAreas is the actual map of PlayerID -> cPlayerAreas
+--]]
+
+
+
+
+cPlayerAreas = {};
+
+g_PlayerAreas = {};
+
+
+
+
+
+function cPlayerAreas:new(a_SafeMinX, a_SafeMinZ, a_SafeMaxX, a_SafeMaxZ)
+	assert(a_SafeMinX);
+	assert(a_SafeMinZ);
+	assert(a_SafeMaxX);
+	assert(a_SafeMaxZ);
+	
+	local obj = {};
+	setmetatable(obj, self);
+	self.__index = self;
+	self.m_SafeCuboid = cCuboid(a_SafeMinX, 0, a_SafeMinZ, a_SafeMaxX, 255, a_SafeMaxZ);
+	return obj;
+end
+
+
+
+
+-- Adds a new cuboid to the area list, where the player is either allowed or not, depending on the IsAllowed param
+function cPlayerAreas:AddArea(a_Cuboid, a_IsAllowed)
+	table.insert(self, {m_Cuboid = a_Cuboid, m_IsAllowed = a_IsAllowed});
+end
+
+
+
+
+
+--- returns true if the player owning this object can interact with the specified block
+function cPlayerAreas:CanInteractWithBlock(a_BlockX, a_BlockZ)
+	assert(self);
+	
+	-- iterate through all the stored areas:
+	local IsInsideAnyArea = false;
+	for idx, Area in ipairs(self) do
+		if (Area.m_Cuboid:IsInside(a_BlockX, 1, a_BlockZ)) then  -- We don't care about Y coords, so use a dummy value
+			if (Area.m_IsAllowed) then
+				return true;
+			end
+			-- The coords are inside a cuboid for which the player doesn't have access, take a note of it
+			IsInsideAnyArea = true;
+		end
+	end
+	
+	if (IsInsideAnyArea) then
+		-- The specified coords are inside at least one area, but none of them allow the player to interact
+		return false;
+	end
+	
+	-- The coords are not inside any area
+	return cConfig.m_AllowInteractNoArea;
+end
+
+
+
+
+
+--- Calls the specified callback for each area contained within
+-- a_Callback has a signature: function(a_Cuboid, a_IsAllowed)
+-- Returns true if all areas have been enumerated, false if the callback has aborted by returning true
+function cPlayerAreas:ForEachArea(a_Callback)
+	assert(self);
+	
+	for idx, Area in ipairs(self) do
+		if (a_Callback(Area.m_Cuboid, Area.m_IsAllowed)) then
+			return false;
+		end
+	end
+	return true;
+end
+
+
+
+
+
+--- Returns true if the player is withing the safe cuboid (no need to re-query the areas)
+function cPlayerAreas:IsInSafe(a_BlockX, a_BlockZ)
+	assert(self);
+	return self.m_SafeCuboid:IsInside(a_BlockX, 0, a_BlockZ);
+end
+
+
+
+