implement component system

1 files changed, 28 insertions, 0 deletions

diff --git a/Transform.lua b/Transform.lua
new file mode 100644
index 0000000..0038cce
--- /dev/null
+++ b/Transform.lua
@@ -0,0 +1,28 @@
+local component = require 'component'
+
+-- component for objects that have a position in the world
+local Transform = component()
+function Transform:init(inst)
+	inst.pos = inst.pos or {0, 0}
+	inst.angle = inst.angle or 0
+	inst.scale = inst.scale or {1, 1}
+	if type(inst.scale) == 'number' then
+		inst.scale = {inst.scale, inst.scale}
+	end
+end
+
+function Transform:love(trans)
+	local trans = trans or love.math.newTransform()
+	local x, y = unpack(self.i.pos)
+	local sx, sy = unpack(self.i.scale)
+	trans:setTransformation(x, y, self.i.angle, sx, sy)
+	return trans
+end
+
+local trans = love.math.newTransform()
+function Transform:use()
+	self:love(trans) -- this is literally me
+	love.graphics.applyTransform(trans)
+end
+
+return Transform