gist_blast.lua

require("vector")

local physics = require("physics")
physics.setDrawMode("normal")
physics.start()

local ground = display.newRect(0,470,320,10)
ground.anchorX, ground.anchorY = 0,0
ground:setFillColor(0,1,0)
physics.addBody(ground,"static")

for i=0,9 do
	for k=1,6 do
		local box = display.newRect(200+(k*12),440 - (i*30),10,30)
		box.anchorX, box.anchorY = 0,0
		box:setFillColor(1/i+ 0.3,0,1)
		physics.addBody(box,{friction=0.3})
	end
end

local circleBig = display.newCircle(80,440, 30)
circleBig:setFillColor(1,0.2,0)
physics.addBody(circleBig, {radius=30,friction=0.1, density=0.1})

local bomb = display.newCircle(160,0,10)
bomb.name = "bomb"
physics.addBody(bomb,{radius=10, bounce=0.4})

local particles = {}
function drawParticles()
	local distance = 20
	local bv = vector:new(bomb.x, bomb.y)

	for i=0,360, 20 do

		if i ~= 0 then
			local angle = (2*math.pi)/360*i
			local px = bomb.x + distance*math.cos(angle)
			local py = bomb.y + distance*math.sin(angle)

			local p = display.newCircle(px,py,10)
			p.alpha = 0
			p.name = "bomb_particle"
			p.gravityScale = 0
			p.isBullet = true
			physics.addBody(p)


			local pv = vector:new(p.x, p.y)
			p.forceVector = bv:sub(pv):normalize()

			local asd = p.forceVector:imul(10)
			p:applyForce(asd.x, asd.y, p.x, p.y)

			table.insert(particles, p)
		end

	end
end

function makeBlast()

end

local function onCollision( e )
	if e.object1.name=="bomb" and e.object2.name=="bomb" then
		return
	end

    if ( e.phase == "ended" ) then

    	if e.object1.name ~= nil and e.object1.name == "bomb_particle" then
    		physics.removeBody(e.object1)
    		e.object1:removeSelf()
    		elseif e.object2.name ~= nil and e.object2.name == "bomb_particle" then
    		physics.removeBody(e.object2)
    		e.object2:removeSelf()
    	end

    end

end

local function onTouch( event )
	if event.phase ~= "began" then
		return true
	end

	physics.removeBody(bomb)
	--bomb:removeSelf()
    drawParticles()
    --makeBlast()

    


    return true
end

Runtime:addEventListener( "collision", onCollision )
Runtime:addEventListener( "touch", onTouch )