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-----------------------------------------------------------------------------------------

--

-- Sample code for "How to use game physics with Solar2D"

-- https://www.codeandweb.com/physicseditor/tutorials/how-to-use-game-physics-in-solar2d

--

-----------------------------------------------------------------------------------------

-- init display

display.setStatusBar( display.HiddenStatusBar )

-- background image

local background = display.newImage( "sprites/background.png" )

background.x = display.contentCenterX

background.y = display.contentCenterY

-- init physics

local physics = require("physics")

physics.start()

-- load the physics data, scale factor is set to 1.0

local physicsData = (require "shapedefs").physicsData(1.0)

-- create physical ground shape

local ground = display.newImage("sprites/ground.png")

ground.x = display.contentCenterX;

ground.y = display.contentHeight-ground.height/2

ground.myName = "ground"

physics.addBody( ground, "static", physicsData:get("ground") )

-- uncomment to debug your physics shapes

-- physics.setDrawMode( "hybrid" )

-- local collision handler

-- called for each contact point of collidin objects

local function onLocalCollision( self, event )

-- retrieve fixture names from physics data

local selfFixtureId = physicsData:getFixtureId(self.myName, event.selfElement)

local otherFixtureId = physicsData:getFixtureId(event.other.myName, event.otherElement)

-- print collision information

print(

self.myName .. ":" .. selfFixtureId ..

" collision "..event.phase.." with " ..

event.other.myName .. ":" .. otherFixtureId

)

end

-- create a random new object

local function newItem()

-- all items

local names = {"banana", "crate", "cherries", "orange"};

-- just pick a random one

local name = names[math.random(#names)];

-- set the graphics

obj = display.newImage("sprites/"..name..".png");

-- remember object's name for collision output

obj.myName = name

-- set the shape

physics.addBody( obj, physicsData:get(name))

-- random start location

obj.x = math.random( display.contentWidth/2 ) + display.contentWidth/4

obj.y = -obj.contentHeight

-- add collision handler

obj.collision = onLocalCollision

obj:addEventListener( "collision", obj )

end

-- call newItem 20 times with a delay of 1s

timer.performWithDelay( 1000, newItem, 20 )