-- Metatable.
local Room = {
	x = 0,
	y = 0,
	width = 64,
	height = 32,
	discovered = false,
	style = "planet",
	seed = 0,
	opacity = 255,
	outside = 1,
}
Room.__index = Room

-- Create new empty Room with given dimensions.
local function newRoom()
	return setmetatable({seed = math.random(1,65535)}, Room)
end

-- Sets style of a Room.
function Room:setStyle(style)
	self.style = style
	return self
end
function Room:setOutside(outside)
	self.outside = outside
	return self
end

-- Dimensions related functions.
function Room:getDimensions()
	return self.width, self.height
end
function Room:setDimensions(width, height)
	self.width, self.height = width, height
	return self
end

-- Position related functions.
function Room:getPosition()
	return self.x, self.y
end
function Room:setPosition(x, y)
	self.x, self.y = x, y
	return self
end
function Room:randomX(w)
	local x = self:getPosition()
	local width = self:getDimensions()
	return x+math.random(3, width-3-w)
end

-- Discovers room.
function Room:discover(animate)
	self.discovered = true
	if animate then
		self.opacity = 0
	end
	return self
end

-- Drawing functions
function Room:drawOutside(scale, offset_x, offset_y)
	local x, y = self:getPosition()
	local width, height = self:getDimensions()
	love.graphics.push()
	love.graphics.origin()
	love.graphics.setScissor((x+1)*scale + offset_x, (y+1)*scale + offset_y, (width-2)*scale, (height-2)*scale)
	love.graphics.setColor(self.opacity,self.opacity,self.opacity)
	love.graphics.draw(Game.sprites.outside, Game.quads.outside[self.outside][1], 0, Game.getHeight()/2, 0, scale, scale, 0, 75/2)
	love.graphics.setScissor()
	love.graphics.pop()
end
function Room:drawInside(scale)
	local x, y = self:getPosition()
	local width, height = self:getDimensions()
	local sprite = Game.sprites.room
	local quad = Game.quads.room[self.style]
	love.graphics.setColor(self.opacity,self.opacity,self.opacity)
	love.graphics.draw(sprite, quad[1], (x)*scale, (y)*scale, 0, scale, scale)
end

-- LÖVE2D callbacks.
function Room:update()
	if self.opacity < 255 then
		self.opacity = math.min(255, self.opacity + 64)
	end
end
function Room:draw(scale, offset_x, offset_y)
	if self.discovered then
		if self.style == "planet" then
			self:drawOutside(scale, offset_x, offset_y)
		end
		self:drawInside(scale)
	end
end

return newRoom