From 004604d036c2e0c311cdfd124a63f14631faae63 Mon Sep 17 00:00:00 2001
From: rubenwardy <rw@rubenwardy.com>
Date: Tue, 23 Jul 2019 19:29:27 +0100
Subject: [PATCH] Add property tax calculation

---
 docs/crafting.mermaid        |  1 -
 mods/capitalism/land/api.lua | 24 ++++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/docs/crafting.mermaid b/docs/crafting.mermaid
index 9ed872f..e267508 100644
--- a/docs/crafting.mermaid
+++ b/docs/crafting.mermaid
@@ -7,7 +7,6 @@ graph LR
     CementChunk[Cement chunk]
     ConcreteBlock[Concrete block]
 
-
     Sand -- Furnace --> Glass
     Sand -- Furnace --> Silicon
 
diff --git a/mods/capitalism/land/api.lua b/mods/capitalism/land/api.lua
index 97c9cbc..132467b 100644
--- a/mods/capitalism/land/api.lua
+++ b/mods/capitalism/land/api.lua
@@ -306,6 +306,30 @@ function land.calc_value(area)
 end
 
 
+--- Gets plot value, calcs it if needed.
+--
+-- @tparam table area
+-- @treturn number value
+function land.get_value(area)
+	if area.land_value then
+		return area.land_value
+	else
+		return land.calc_value()
+	end
+end
+
+
+--- Work out the amount of tax that should be paid monthly
+--
+-- @tparam table area
+-- @treturn number value
+function land.get_tax(area)
+	local value = land.get_value(area)
+	local zone = land.get_zone(area)
+	return value * (zone.property_tax_rate or 0.1)
+end
+
+
 --- Whether a user can buy a plot
 --
 -- @tparam table area