GameScene = Object.extend(Object)

function GameScene:new()
end

function GameScene:init()
	GameScene:playerChanged(currentPlayer)
	movementDelta = 0

	pSystem = love.graphics.newParticleSystem(boosterParticle,128)
	pSystem:setParticleLifetime(0,0.6)
	pSystem:setLinearAcceleration(0,20,0,25)
	pSystem:setSpeed(40,50)
	pSystem:setRotation(10,20)
	pSystem:setSpin(10,20)
	pSystem:setRadialAcceleration(10,20)
	pSystem:setTangentialAcceleration(10,20)
	pSystem:setSizeVariation(0.3)
	pSystem:setSizes(1,0.9,0.8,0.7,0.5,0.3,0.1,0.05)
	pSystem:setColors(
		1,1,1,1,
		1,1,1,1,
		1,1,1,1,
		1,1,1,0.8,
		1,1,1,0.6,
		1,1,1,0.5,
		1,1,1,0.4,
		1,1,1,0.3
	)
end

function GameScene:update(dt)
	pSystem:update(dt)
	GameScene:updateInput(dt)
	GameScene:updateBounds(dt)
end

function GameScene:draw()
	love.graphics.setColor(255,255,255, 1)
	love.graphics.draw(pSystem, currentPlayer.px-2, currentPlayer.py)
	love.graphics.draw(pSystem, currentPlayer.px+2, currentPlayer.py)
	love.graphics.draw(
		currentPlayer.ship.image,
		currentPlayer.px,
		currentPlayer.py,
		currentPlayer.rot*(math.pi/180),
		1, 1,
		currentPlayer.ship.image:getWidth()/2,
		currentPlayer.ship.image:getHeight()/2
	 )

	love.graphics.print(currentPlayer.px..","..currentPlayer.py.." s: " .. currentPlayer.speed .. " a: " ..currentPlayer.acc,10,10)
end

function GameScene:drawHud()

	love.graphics.setColor(255,255,255, 1)
	love.graphics.draw( gameHud, 0, 600-66 )

	love.graphics.setColor(255,255,255, 0.75)
	love.graphics.draw( currentPlayer.image, 14, 550, 0, 0.5, 0.5 )

	love.graphics.setColor( text.r, text.g, text.b, text.alpha )
	love.graphics.print( currentPlayer.name, 48, 550 )
	love.graphics.print( currentPlayer:getShipname(), 48, 566 )

end

function GameScene:keypressed(key,unicode)
	if key == "1" then
		GameScene:playerChanged(CaptainSteve)
	elseif key == "2" then
		GameScene:playerChanged(CaptainRobert)
	elseif key == "3" then
		GameScene:playerChanged(CaptainJohn)
	end
end

function GameScene:playerChanged(to)
	currentPlayer = to
	currentPlayer.px = windowWidth/2
	currentPlayer.py = windowHeight/2
	currentPlayer.rot = 0
	currentPlayer.acc = 0
	currentPlayer.bounds = { x1= 20, y1= 20, x2= windowWidth-20, y2= windowHeight - 86}
end

function GameScene:updateInput(dt)
	movementDelta = movementDelta + dt
	if (movementDelta > 0.02) then
		movementDelta = 0

		local isUp = false
		local isLeft = false
		local isDown = false
		local isRight = false

		--local hAxis, vAxis, hAxis2, vAxis2 = love.joystick.getAxes(1)
		--local axisMargin = 0.5

		isUp = love.keyboard.isDown( "w" )-- or (not (vAxis == nil) and vAxis < -(1-axisMargin)) or (not (vAxis2 == nil) and vAxis2 < -(1-axisMargin)) or love.joystick.isDown(1, 1)
		isDown = love.keyboard.isDown( "s" )-- or (not (vAxis == nil) and vAxis > (1-axisMargin)) or (not (vAxis2 == nil) and vAxis2 > (1-axisMargin)) or love.joystick.isDown(1, 2)
		isLeft = love.keyboard.isDown( "a" )-- or (not (hAxis == nil) and hAxis < -(1-axisMargin)) or (not (hAxis2 == nil) and hAxis2 < -(1-axisMargin)) or love.joystick.isDown(1, 3)
		isRight = love.keyboard.isDown( "d" )-- or (not (hAxis == nil) and hAxis > (1-axisMargin)) or (not (hAxis2 == nil) and hAxis2 > (1-axisMargin)) or love.joystick.isDown(1, 4)

		if isUp and isLeft then
			currentPlayer.rot = 315
			particleRot = 45
		elseif isUp and isRight then
			currentPlayer.rot = 45
			particleRot = 135
		elseif isUp then
			currentPlayer.rot = 0
			particleRot = 90
		elseif isDown and isLeft then
			currentPlayer.rot = 225
			particleRot = 315
		elseif isDown and isRight then
			currentPlayer.rot = 135
			particleRot = 225
		elseif isDown then
			currentPlayer.rot = 180
			particleRot = 270
		elseif isLeft then
			currentPlayer.rot = 270
			particleRot = 0
		elseif isRight then
			currentPlayer.rot = 90
			particleRot = 180
		end

		if isUp or isDown or isLeft or isRight then
			currentPlayer.acc = currentPlayer.acc + currentPlayer.accIncr
		elseif currentPlayer.acc > 0 then
			currentPlayer.acc = currentPlayer.acc - currentPlayer.accIncr
		end

		currentPlayer.acc = math.clamp(0, currentPlayer.acc, 1)

		if currentPlayer.acc > 0 then
			pSystem:setDirection(particleRot*(math.pi/180))
			pSystem:emit( 64 * currentPlayer.acc )
		end

		if isUp then
			currentPlayer.py = currentPlayer.py - (currentPlayer.speed*currentPlayer.acc)
		end

		if isDown then
			currentPlayer.py = currentPlayer.py + (currentPlayer.speed*currentPlayer.acc)
		end

		if isLeft then
			currentPlayer.px = currentPlayer.px - (currentPlayer.speed*currentPlayer.acc)
		end

		if isRight then
			currentPlayer.px = currentPlayer.px + (currentPlayer.speed*currentPlayer.acc)
		end
	end
end

function GameScene:updateBounds(dt)
	currentPlayer.px = math.clamp( currentPlayer.bounds.x1,  currentPlayer.px, currentPlayer.bounds.x2 )
	currentPlayer.py = math.clamp( currentPlayer.bounds.y1,  currentPlayer.py, currentPlayer.bounds.y2 )
end