particles

assets.lua

@@ -7,7 +7,8 @@ multilily = lily.loadMulti({
 	{lily.newImage, "assets/captains/john-danger.png"},
 	{lily.newImage, "assets/ships/blackstar-5.png"},
 	{lily.newImage, "assets/ships/excalibur-iv.png"},
-	{lily.newImage, "assets/ships/decorator.png"}
+	{lily.newImage, "assets/ships/decorator.png"},
+	{lily.newImage, "assets/ships/particle.png"}
 })
 multilily:onComplete(function(_, lilies)
 	gameLogo = lilies[1][1]
@@ -19,6 +20,7 @@ multilily:onComplete(function(_, lilies)
 	CaptainSteve.ship.image = lilies[7][1]
 	CaptainRobert.ship.image = lilies[8][1]
 	CaptainJohn.ship.image = lilies[9][1]
+	boosterParticle = lilies[10][1]
 
 	windowWidth = love.graphics.getWidth()
 	windowHeight = love.graphics.getHeight()

scene/game.lua

@@ -6,15 +6,39 @@ 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,
@@ -58,7 +82,7 @@ function GameScene:playerChanged(to)
 	currentPlayer.py = windowHeight/2
 	currentPlayer.rot = 0
 	currentPlayer.acc = 0
-	currentPlayer.bounds = { x1= 20, y1= 20, x2= windowWidth-30, y2= windowHeight - 86}
+	currentPlayer.bounds = { x1= 20, y1= 20, x2= windowWidth-20, y2= windowHeight - 86}
 end
 
 function GameScene:updateInput(dt)
@@ -70,7 +94,6 @@ function GameScene:updateInput(dt)
 		local isLeft = false
 		local isDown = false
 		local isRight = false
-		local rotation = 0
 
 		--local hAxis, vAxis, hAxis2, vAxis2 = love.joystick.getAxes(1)
 		--local axisMargin = 0.5
@@ -81,25 +104,31 @@ function GameScene:updateInput(dt)
 		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
-			rotation = 315
+			currentPlayer.rot = 315
+			particleRot = 45
 		elseif isUp and isRight then
-			rotation = 45
+			currentPlayer.rot = 45
+			particleRot = 135
 		elseif isUp then
-			rotation = 0
+			currentPlayer.rot = 0
+			particleRot = 90
 		elseif isDown and isLeft then
-			rotation = 225
+			currentPlayer.rot = 225
+			particleRot = 315
 		elseif isDown and isRight then
-			rotation = 135
+			currentPlayer.rot = 135
+			particleRot = 225
 		elseif isDown then
-			rotation = 180
+			currentPlayer.rot = 180
+			particleRot = 270
 		elseif isLeft then
-			rotation = 270
+			currentPlayer.rot = 270
+			particleRot = 0
 		elseif isRight then
-			rotation = 90
+			currentPlayer.rot = 90
+			particleRot = 180
 		end
 
-		currentPlayer.rot = rotation
-
 		if isUp or isDown or isLeft or isRight then
 			currentPlayer.acc = currentPlayer.acc + currentPlayer.accIncr
 		elseif currentPlayer.acc > 0 then
@@ -108,6 +137,11 @@ function GameScene:updateInput(dt)
 
 		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