Basic camera added

1 files changed, 51 insertions, 0 deletions

diff --git a/camera.lua b/camera.lua
new file mode 100644
index 0000000..793b0d1
--- /dev/null
+++ b/camera.lua
@@ -0,0 +1,51 @@
+-- `Camera`
+-- Used in drawing.
+
+-- Metatable of `Camera`
+Camera = {
+	x = 0,
+	y = 0,
+	follow = nil
+}
+
+-- Constructor of `Camera`
+function Camera:new ()
+	local o = {}
+	setmetatable(o, self)
+	self.__index = self
+	o.follow = {}
+	return o
+end
+
+-- Drawing offsets
+function Camera:getOffsets ()
+	return -self.x,-self.y
+end
+
+-- Position
+function Camera:setPosition (x, y)
+	local x = x or 0
+	local y = y or 0
+	self.x, self.y = x, y
+end
+
+-- Add follow position
+function Camera:addFollow (x, y, w)
+	local w = 1
+	if x ~= nil and y ~= nil then
+		table.insert(self.follow, {["x"] = x, ["y"] = y, ["w"] = w})
+	end
+end
+
+-- Move follow
+function Camera:moveFollow ()
+	local x,y,i = 145, 90, 1
+	for k,point in pairs(Nauts) do
+		i = i + 1
+		x = math.max(math.min(point.body:getX(),290),0) + x
+		y = math.max(math.min(point.body:getY(),180),0) + y
+	end
+	x = x / i - 145
+	y = y / i - 90
+	self:setPosition(x,y)
+end
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