added the crates and the crate object plus making them joint

main.lua

@@ -3,6 +3,9 @@ Boipus = require('deps.boipushy')
 Physics = require('deps.physics')
 assets = require('deps.cargo').init('data')
 
+-- my own libs
+crates = require('crate')
+
 local CONST_GRAVITY = 512
 local CONST_SIDES = {
   LEFT = {
@@ -22,8 +25,6 @@ local player = {
 }
 
 local magnet = {
-  x = 50,
-  y = 50,
   w = 50,
   h = 50,
   collider = nil,
@@ -44,9 +45,10 @@ function love.load()
   world = Physics(0, 0)
   world:addClass('Player')
   world:addClass('Side')
+  world:addClass('Crate')
   side.left = world:addChain(true, CONST_SIDES.LEFT):setClass('Side')
   side.right = world:addChain(true, CONST_SIDES.RIGHT):setClass('Side')
-  magnet.collider = world:addRectangle(magnet.x, magnet.y, magnet.w, magnet.h):setClass('Player')
+  magnet.collider = world:addRectangle(50, 50, magnet.w, magnet.h):setClass('Player')
   magnet.collider:setRestitution(0)
 
   input = Boipus()
@@ -58,6 +60,10 @@ function love.load()
   input:bind(love.keyboard.getKeyFromScancode('s'), 'moveDown')
   input:bind(love.keyboard.getKeyFromScancode('space'), 'switch')
 
+  crates:init(world, magnet)
+  crates:spawn(120, 400)
+  crates:spawn(150, 400)
+
   -- Gamepad
   --[[input:bind('dpup', 'moveUp')
   input:bind('dpleft', 'moveLeft')
@@ -67,6 +73,7 @@ end
 
 function love.update(dt)
   world:update(dt)
+  crates:update(dt)
 
   --[[ if input:down('moveUp') then magnet.collider:applyLinearImpulse(0, -player.maxSpeed.y) end
   if input:down('moveLeft') then magnet.collider:applyLinearImpulse(-player.maxSpeed.x, 0) end