1 files changed, 70 insertions, 0 deletions
diff --git a/physics.lua b/physics.lua
new file mode 100644
index 0000000..336a7c2
--- /dev/null
+++ b/physics.lua
@@ -0,0 +1,70 @@
+local game = require 'game'
+
+local M = {}
+
+love.physics.setMeter(300)
+M.world = love.physics.newWorld(0, 2000)
+M.Object = game.Object:extend()
+
+local bodies = {}
+setmetatable(bodies, {__mode = 'kv'})
+function M.body_object(body)
+	return bodies[body]
+end
+
+function M.Object:new(pos, rotation, scale, type)
+	game.Object.new(self, pos, rotation, scale)
+	local x, y = unpack(self.pos)
+	self.body = love.physics.newBody(M.world, x, y, type)
+	self.body:setAngle(self.rot)
+	bodies[self.body] = self
+end
+
+function M.Object:enable()
+	game.Object.enable(self)
+	if body then
+		self.body:setActive(true)
+	end
+end
+
+function M.Object:disable()
+	game.Object.disable(self)
+	self.body:setActive(false)
+end
+
+function M.Object:update()
+	local x, y = self.body:getWorldPoint(0, 0)
+	self.pos[1], self.pos[2] = x, y
+	self.rot = self.body:getAngle()
+end
+
+local sprites = {}
+setmetatable(sprites, {__mode = 'v'})
+
+function M.simple(sprite, shape, body_type, restitution)
+	local class = M.Object:extend()
+	if type(sprite) == 'string' then
+		sprite = sprites[sprite] or love.graphics.newImage(sprite, {dpiscale = 2})
+	end
+	class.sprite = sprite
+
+	local w, h = sprite:getDimensions()
+	function class:new(pos, rotation, scale)
+		M.Object.new(self, pos, rotation, scale, body_type or 'dynamic')
+
+		if not shape or shape == 'rect' then
+			self.shape = love.physics.newRectangleShape(w, h)
+		elseif shape == 'circle' then
+			self.shape = love.physics.newCircleShape(w / 2)
+		else
+			self.shape = love.physics.newPolygonShape(unpack(shape))
+		end
+		self.fixture = love.physics.newFixture(self.body, self.shape)
+		if restitution then
+			self.fixture:setRestitution(restitution)
+		end
+	end
+	return class
+end
+
+return M