From 383583733b2f4cd8c5e632c160afdb987b8615af Mon Sep 17 00:00:00 2001
From: Wolfgang Aigner <wolfgang.aigner@yahoo.de>
Date: Thu, 6 Apr 2023 17:10:13 +0200
Subject: Basic loading of goods defined in goods.json

---
 extension/src/openvic2/LoadGoods.cpp | 87 ++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 extension/src/openvic2/LoadGoods.cpp

(limited to 'extension/src/openvic2/LoadGoods.cpp')

diff --git a/extension/src/openvic2/LoadGoods.cpp b/extension/src/openvic2/LoadGoods.cpp
new file mode 100644
index 0000000..a47f03f
--- /dev/null
+++ b/extension/src/openvic2/LoadGoods.cpp
@@ -0,0 +1,87 @@
+#include "LoadGoods.hpp"
+
+#include <godot_cpp/variant/utility_functions.hpp>
+#include <godot_cpp/classes/file_access.hpp>
+#include <godot_cpp/classes/json.hpp>
+
+using namespace OpenVic2;
+using namespace godot;
+
+#define JSON_PROPERTY_NAME(x) godot::StringName(x)
+
+std::vector<Good> LoadGoods::load_goods_from_disk(godot::String const& file_path) {
+	std::vector<Good> goods;
+	Ref<FileAccess> file = FileAccess::open(file_path, FileAccess::ModeFlags::READ);
+	Error err = FileAccess::get_open_error();
+	if (err != OK || file.is_null()) {
+		UtilityFunctions::push_error("Failed to open good configuration file: ", file_path);
+		return std::vector<Good>();
+	}
+	godot::String file_content = file->get_as_text();
+	JSON parsed_goods;
+	err = parsed_goods.parse(file_content);
+	if (err != OK) {
+		UtilityFunctions::push_error("Failed to parse goods.json");
+		return std::vector<Good>();
+	}
+	Variant v_goods = parsed_goods.get_data().get("goods", nullptr);
+	if (v_goods.get_type() != Variant::ARRAY) {
+		UtilityFunctions::push_error("Failed to parse goods.json: Top level property is not an array");
+		return std::vector<Good>();
+	}
+	godot::Array v_goods_array = (godot::Array)v_goods;
+	int32_t count = v_goods_array.size();
+	goods.resize(count);
+	for (size_t i = 0; i < count; i++) {
+		if(!extract_property_from_json(v_goods_array[i], goods, i)) {
+			return std::vector<Good>();
+		}
+	}
+	return goods;
+}
+
+bool LoadGoods::extract_property_from_json(const godot::Variant& variant, std::vector<Good>& goods, int32_t index) {
+	bool valid;
+	String id = variant.get_named(JSON_PROPERTY_NAME("id"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property id of type string from goods.json");
+		return false;
+	}
+	String category = variant.get_named(JSON_PROPERTY_NAME("category"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property category of type string from goods.json");
+		return false;
+	}
+	float_t cost = (float_t)variant.get_named(JSON_PROPERTY_NAME("cost"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property cost of type float from goods.json");
+		return false;
+	}
+	String colour = variant.get_named(JSON_PROPERTY_NAME("colour"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property colour of type string from goods.json");
+		return false;
+	}
+	bool isAvailableAtStart = (bool)variant.get_named(JSON_PROPERTY_NAME("isAvailableAtStart"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property isAvailableAtStart of type bool from goods.json");
+		return false;
+	}
+	bool isTradable = (bool)variant.get_named(JSON_PROPERTY_NAME("isTradeable"), valid); 
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property isTradable of type bool from goods.json");
+		return false;
+	}
+	bool isMoney = (bool)variant.get_named(JSON_PROPERTY_NAME("isMoney"), valid); 
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property isMoney of type bool from goods.json");
+		return false; 
+	}
+	bool hasOverseasPenalty = (bool)variant.get_named(JSON_PROPERTY_NAME("hasOverseasPenalty"), valid);
+	if(!valid) {
+		UtilityFunctions::push_error("Could not extract property hasOverseaPenalty of type bool from goods.json");
+		return false;
+	}
+	goods.at(index) = Good(id, category, cost, colour, isAvailableAtStart, isTradable, isMoney, hasOverseasPenalty);
+	return true;
+}
\ No newline at end of file
-- 
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