Zombieeeeeees

fullH = display.viewableContentHeight



system.activate( "multitouch" )
local physics = require "physics"
physics.start()
physics.setGravity( 0, 0 )
physics.setDrawMode( "hybrid" )
--[[
if system.getInfo("environment") == "simulator" then
        local rcorona = require("rcorona")
        rcorona.startServer(8181)
end
 --]]


halfW = display.viewableContentWidth * 0.5
halfH = display.viewableContentHeight * 0.5
--local background = display.newImage( "Background Placeholder.png" )
--background:setReferencePoint ( display.TopCenterReferencePoint )
--background.x = halfW
local stage = display.getCurrentStage()
local zombies = display.newGroup()

for i = 1, fullH do
    zombies:insert( display.newGroup() )
end

zombieCollisionFilter = { categoryBits = 1, maskBits = 2 }
zombieCollisionFilter3 = { categoryBits = 4, maskBits = 4 }


-- Spawner
local speedScalar = 5
local sSpawn = function(event)
  --      local sheetInfo = require("Zombie Placeholder")
 --       local zombieSheet = graphics.newImageSheet( "Zombie Placeholder.png", sheetInfo:getSheet() )
--        local sequenceData = { name = zombieWalk, start = 1, count = 8, time = 1500 }
--        local s = display.newSprite( zombieSheet, sequenceData )
        local s = display.newRect( 0, 0, 112, 187 )
        s:setReferencePoint ( display.BottomCenterReferencePoint )
        s.box = display.newRect( s.x, s.y, 50, 5 )
        s.box:setReferencePoint ( display.BottomCenterReferencePoint )
        s.box.isVisible = false
        s.xScale = .07
        s.yScale = .07
        s.box:translate( halfW + math.random( -80, 80 ), halfH - 260 )
--        physics.addBody( s, "dynamic", { density = 0, friction = 0, bounce = 0, --[[ filter = zombieCollisionFilter --]] }  )
        physics.addBody( s.box, "dynamic", { density = 0, friction = 0, bounce = 0.0, filter = zombieCollisionFilter3} )
        s.box.isFixedRotation = true
        s.box:setLinearVelocity( 0 , 7 * speedScalar )
--        s:play()
        s.count = event.count
        s.name = "zombie"
        function s.box:resume ( event )
                timer.performWithDelay( 1000, function() s.box:setLinearVelocity( 0, 7 * speedScalar ) end )
        end
        function s:touch ( event )
                if event.phase == "ended" then
                        timer.performWithDelay( 50, function() s.box:applyLinearImpulse( 0, -0.005, s.box.x, s.box.y ) end )
                        timer.performWithDelay( 2000, function() s.box:setLinearVelocity( 0, 7 * speedScalar ) print ("stopping", s.box ) end )
                end
--                return true
        end
        function s:enterFrame ( event )
                local object = s
--              print (object, object.box, object.box.y)
                s.x = s.box.x
                s.y = s.box.y
                if object.box.y >= 1 and object.box.y <= fullH then
                        zombies[ math.floor( (object.box.y) ) ]:insert( object )
--                        print "sorted"
                end
                ScalePercent = ( s.y ) / 8 + 4
                s.xScale = 0.015 * ScalePercent
                s.yScale = 0.015 * ScalePercent

                local col = 255 * math.min( s.y, fullH ) / fullH
                s:setFillColor( col )
        end
        lower = {}
        upper = {}
        function s.box:collision ( event )
                if event.target.y >= event.other.y then
                        lower = event.target
                        upper = event.other
                elseif event.target.y < event.other.y then
                        lower = event.other
                        upper = event.target
                end
                lowerXV, lowerYV = lower:getLinearVelocity()
                event.target:resume()
                event.other:resume()
                if event.phase == "began" then
                        upper:setLinearVelocity( 0, lowerYV * math.random( 0.8, 1.1 ) )
                        lower:setLinearVelocity( 0, lowerYV * 0.5 )
                end
                return true
        end
        s.box:addEventListener( "collision", s.box )
        Runtime:addEventListener( "enterFrame", s )
        s:addEventListener( "touch" )
        return s
end

function spawn ( event )
        zombies:insert( 1, sSpawn( event ) )
end

timer.performWithDelay( 150, spawn, 0 )