digraph YsagoonGame
{
	// ressources
	node [shape=ellipse];
	// ressources found in the water
	water [label="Water", color=cyan];
	seaweed [label="Seaweed", color=green];
	fish [label="Fish", color=red];
	// ressources found on the ground
	corn [label="Corn", color="#C0A000"];
	tree [label="Tree", color=brown];
	stone [label="Stone", color=grey];
	ostrichEgg [label="Ostrich Egg", color=violet];

	// buildings
	node [shape=house];
	// food & health related
	house [label="House\nOut : Units"];
	hospital [label="Hospital"];
	// defense related
	woodenFence [label="Wooden Fence"];
	woodenTower [label="Wooden tower"];
	stoneFence [label="Stone Fence"];
	stoneTower [label="Stone tower"];
	// ressource related
	stock [label="Stock\nIn : All\nOut : All"];
	cornField [label="Corn Field\nOut : Corn", color="#C0A000"];
	oilFactory [label="Oil factory\nOut : Oil", color="#E06060"];
	bakery [label="Bakery\nOut : Bread", color=orange];
	foundry [label="Foundry\nOut : Metal", color="#4040A0"];
	// advanced
	ostrichFarm [label="Ostrich Farm"];
	transportFactory [label="Transport Tool Factory"];
	shieldFactory [label="Shield Factory"];
	leadershipSchool [label="Leadership School"];

	// ressources needed once to create building
	edge [style=dotted];
	tree ->
	{
		house hospital
		woodenFence woodenTower
		stock cornField oilFactory bakery foundry
		ostrichFarm transportFactory shieldFactory leadershipSchool
	} [color=brown];
	stone ->
	{
		hospital
		stoneFence stoneTower
		bakery foundry
		transportFactory shieldFactory leadershipSchool
	} [color=grey];
	corn ->
	{
		cornField
	} [color="#C0A000"];

	// ressources needed regularly to use building
	edge [style=solid];
	// food & health related
	fish -> house [color=red];
	bakery -> house [color=orange];
	water -> hospital [color=cyan];
	fish -> hospital [color=red];
	bakery -> hospital [color=orange];
	oilFactory -> hospital [color="#E06060"];
	// ressource related
	water -> cornField [color=cyan];
	seaweed -> oilFactory [color=green];
	water -> bakery [color=cyan];
	corn -> bakery [color="#C0A000"];
	cornField -> bakery [color="#C0A000"];
	oilFactory -> bakery [color="#E06060"];
	stone -> foundry [color=grey];
	oilFactory -> foundry [color="#E06060"];
	// advanced
	water -> ostrichFarm [color=cyan];
	corn -> ostrichFarm [color="#C0A000"];
	cornField -> ostrichFarm [color="#C0A000"];
	ostrichEgg -> ostrichFarm [color=violet];
	tree -> transportFactory [color=brown];
	foundry -> shieldFactory [color="#4040A0"];
	water -> leadershipSchool [color=cyan];
	oilFactory -> leadershipSchool [color="#E06060"];

	// upgrade relationship
	edge [style=dashed];
	// defense related
	woodenFence -> woodenTower;
	woodenFence -> stoneFence;
	woodenTower -> stoneTower;
	stoneFence -> stoneTower;
}