Делаем игру с Gideros

-- application:getDeviceHeight() - высота экрана -- application:getDeviceWidth() - ширина экрана -- textfield:getWidth() - ширина спрайта, т.е. текста -- textfield:getHeight() - высота спрайта, т.е. текста  local half_height = application:getDeviceHeight() / 2 local half_width = application:getDeviceWidth() / 2  local textfield = TextField.new(nil, "Hello, world!")  textfield:setX(half_width - textfield:getWidth() / 2) textfield:setY(half_height - textfield:getHeight() / 2)  stage:addChild(textfield) 

application:setOrientation(application.LANDSCAPE_LEFT)  sceneManager = SceneManager.new({ 	["level"] = level })  stage:addChild(sceneManager)  --start level scene sceneManager:changeScene("level", 1, SceneManager.flipWithFade, easing.outBack) 

-- Add box2d physics library require "box2d"  level = Core.class(Sprite)  function level:init() 	 	application:setOrientation(Application.LANDSCAPE_LEFT)  	local spritesheet = Texture.new("spritesheet.png") 	local props = Texture.new("props.png") 	local buttons = Texture.new("buttons.png") 	 	self.world = b2.World.new(0, 10, true) 	 	-- Globals for followed camera 	self.screenW = application:getContentWidth()*2 	self.screenH = application:getContentHeight() 	 	-- Add sprites 	self.catapult_l = Bitmap.new(TextureRegion.new(spritesheet, 834, 1, 43, 124)) 	self.catapult_r = Bitmap.new(TextureRegion.new(spritesheet, 3, 1, 37, 199)) 	self.bird_idle = Bitmap.new(TextureRegion.new(spritesheet, 903, 798, 46, 44)) 	self.bg_image = Texture.new("bg.png", true, {wrap = Texture.REPEAT}) 	self.square_prop = Bitmap.new(TextureRegion.new(props, 0, 1, 84, 84)) 	self.triangle_prop = Bitmap.new(TextureRegion.new(props, 85, 1, 85, 83)) 	self.restart = Bitmap.new(TextureRegion.new(buttons, 580, 295, 108, 108)) 	 	-- Change scale of sprites 	self.bird_idle:setScale(0.6, 0.6, 0.6) 	setHalf({self.catapult_r,  		self.catapult_l, 		self.square_prop, 		self.triangle_prop, 		self.restart}) 	 	-- Create background 	local bg = Bitmap.new(self.bg_image) 	bg:setPosition(0, 0); 	local bg1 = Bitmap.new(self.bg_image) 	bg1:setPosition(bg:getWidth(), 0); 	 	-- Add ground collision 	self:wall(application:getContentWidth(), application:getContentHeight() - 20, application:getContentWidth()*2, 40) 	 	-- Add props physics 	local square_body = self.world:createBody{type = b2.DYNAMIC_BODY} 	local square_shape = b2.PolygonShape.new() 	square_shape:set(0, 0, 		self.square_prop:getWidth(), 0, 		self.square_prop:getWidth(), self.square_prop:getHeight(), 		0, self.square_prop:getHeight()) 	local square_fixture = square_body:createFixture{shape = square_shape, density = 1.0, friction = 0.1, restitution = 0.2} 	self.square_prop.body = square_body 	 	local triangle_body = self.world:createBody{type = b2.DYNAMIC_BODY} 	local triangle_shape = b2.PolygonShape.new() 	triangle_shape:set(self.triangle_prop:getWidth() / 2, 0, 		self.triangle_prop:getWidth(), self.triangle_prop:getHeight(), 		0, self.triangle_prop:getHeight()) 	local triangle_fixture = triangle_body:createFixture{shape = triangle_shape, density = 1.0, friction = 0.1, restitution = 0.2} 	self.triangle_prop.body = triangle_body 	 	-- Place catapult 	self.catapult_r:setPosition(100, 178) 	self.catapult_l:setPosition(85, 174) 	 	-- Place bird 	self.bird_idle:setAnchorPoint(.5, .5) 	self.bird_idle:setPosition(100, 190) 	self.start_x, self.start_y = self.bird_idle:getPosition() 	 	-- Place props 	self.square_prop.body:setPosition(600, 200) 	self.triangle_prop.body:setPosition(600, 150) 	 	-- Place restart buttons 	self.restart:setAnchorPosition(0, 0) 	self.restart:setPosition(10, 10) 	self.restart:addEventListener(Event.MOUSE_DOWN, restartDown, self) 	self.restart:addEventListener(Event.MOUSE_UP, restartUp, self) 	 	-- Create elastic band for catapult 	local onBirdBandX = self.bird_idle:getX() - self.bird_idle:getWidth() / 2 	local onBirdBandY = self.bird_idle:getHeight() / 2 	self.band_l = Shape.new() 	self.band_l:setFillStyle(Shape.SOLID, 0x382E1C) 	self.band_l:beginPath(Shape.NON_ZERO) 	self.band_l:lineTo(onBirdBandX + 4, self.bird_idle:getY() - onBirdBandY + 5) 	self.band_l:lineTo(onBirdBandX + 4, self.bird_idle:getY() + onBirdBandY - 5) 	self.band_l:lineTo(87, 198) 	self.band_l:lineTo(85, 185) 	self.band_l:closePath() 	self.band_l:endPath()  	self.band_r = Shape.new() 	self.band_r:setFillStyle(Shape.SOLID, 0x382E1C) 	self.band_r:beginPath(Shape.NON_ZERO) 	self.band_r:lineTo(onBirdBandX + 4, self.bird_idle:getY() - onBirdBandY + 5) 	self.band_r:lineTo(onBirdBandX + 4, self.bird_idle:getY() + onBirdBandY - 5) 	self.band_r:lineTo(110, 198) 	self.band_r:lineTo(110, 187) 	self.band_r:closePath() 	self.band_r:endPath()  	-- Add drag events to bird 	self.bird_idle:addEventListener(Event.MOUSE_DOWN, onMouseDown, self) 	self.bird_idle:addEventListener(Event.MOUSE_MOVE, onMouseMove, self) 	self.bird_idle:addEventListener(Event.MOUSE_UP, onMouseUp, self)  	-- Add all elements to scene 	self:addChildAt(bg, 1) 	self:addChildAt(bg1, 2) 	self:addChildAt(self.catapult_r, 3) 	self:addChildAt(self.band_r, 4) 	self:addChildAt(self.bird_idle, 5) 	self:addChildAt(self.catapult_l, 6) 	self:addChildAt(self.band_l, 7) 	self:addChildAt(self.square_prop, 8) 	self:addChildAt(self.triangle_prop, 9) 	self:addChildAt(self.restart, 10) 	 	self:addEventListener(Event.ENTER_FRAME, self.onEnterFrame, self)     self:addEventListener("exitBegin", self.onExitBegin, self) end   function level:wall(x, y, width, height) 	local wall = Shape.new() 	wall:beginPath() 	 	wall:moveTo(-width/2,-height/2) 	wall:lineTo(width/2, -height/2) 	wall:lineTo(width/2, height/2) 	wall:lineTo(-width/2, height/2) 	wall:closePath() 	wall:endPath() 	wall:setPosition(x,y) 	 	local body = self.world:createBody{type = b2.STATIC_BODY} 	body:setPosition(wall:getX(), wall:getY()) 	body:setAngle(wall:getRotation() * math.pi/180) 	local poly = b2.PolygonShape.new() 	poly:setAsBox(wall:getWidth()/2, wall:getHeight()/2) 	local fixture = body:createFixture{shape = poly, density = 1.0,  	friction = 1, restitution = 0} 	wall.body = body 	wall.body.type = "wall" 	 	stage:addChild(wall) end  function setHalf(arr) 	for i = 1, #arr do 		arr[i]:setScale(.5, .5, .5) 	end end  function onMouseDown(self, event) 	local bird = self.bird_idle 	if bird:hitTestPoint(event.x, event.y) and bird.isFly ~= true then 		bird.isFocus = true  		bird.x0, bird.y0 = event.x, event.y  		event:stopPropagation() 	end end  function onMouseMove(self, event) 	-- if sprite touch and move finger, then change position of sprite 	local bird = self.bird_idle 	if bird.isFocus then 		if event.x > 20 and event.x < 140 then 			local dx = event.x - bird.x0 			bird:setX(bird:getX() + dx) 			bird.x0 = event.x 		end 		 		if event.y > 160 and event.y < 265 then 			local dy = event.y - bird.y0 			bird:setY(bird:getY() + dy) 			self.bird_idle.y0 = event.y 		end 		 		local onBirdBandX = self.bird_idle:getX() - self.bird_idle:getWidth() / 2 		local onBirdBandY = self.bird_idle:getHeight() / 2 		self.band_l:clear() 		self.band_l = Shape.new() 		self.band_l:setFillStyle(Shape.SOLID, 0x382E1C) 		self.band_l:beginPath(Shape.NON_ZERO) 		self.band_l:lineTo(onBirdBandX + 4, self.bird_idle:getY() - onBirdBandY + 5) 		self.band_l:lineTo(onBirdBandX + 4, self.bird_idle:getY() + onBirdBandY - 5) 		self.band_l:lineTo(87, 198) 		self.band_l:lineTo(85, 185) 		self.band_l:closePath() 		self.band_l:endPath() 		self:addChild(self.band_l) 	 		self.band_r:clear() 		self.band_r = Shape.new() 		self.band_r:setFillStyle(Shape.SOLID, 0x382E1C) 		self.band_r:beginPath(Shape.NON_ZERO) 		self.band_r:lineTo(onBirdBandX + 4, self.bird_idle:getY() - onBirdBandY + 5) 		self.band_r:lineTo(onBirdBandX + 4, self.bird_idle:getY() + onBirdBandY - 5) 		self.band_r:lineTo(110, 198) 		self.band_r:lineTo(110, 187) 		self.band_r:closePath() 		self.band_r:endPath() 		self:addChildAt(self.band_r, 4) 		 		event:stopPropagation() 	end end  function onMouseUp(self, event) 	if self.bird_idle.isFocus and self.bird_idle.isFly ~= true then 		self.bird_idle.isFocus = false  		local bird_body = self.world:createBody{type = b2.DYNAMIC_BODY} 		local circle_shape = b2.CircleShape.new(0, 0, self.bird_idle:getWidth() / 2) 		local bird_fixture = bird_body:createFixture{shape = circle_shape, density = 1.0, friction = .5, restitution = 0} 		 		self.bird_idle.body = bird_body 		self.bird_idle.body:setPosition(self.bird_idle:getX() + self.bird_idle:getWidth() / 2, self.bird_idle:getY() + self.bird_idle:getHeight() / 2) 		 		self.bird_idle.body:applyForce((self.start_x - self.bird_idle:getX()) * 8, (self.start_y - self.bird_idle:getY()) * 8, self.bird_idle.body:getWorldCenter()) 		 		self.bird_idle.isFly = true 		 		self.band_l:clear() 		self.band_r:clear() 		 		event:stopPropagation() 	end end  function restartDown (self, event) 	if self.restart:hitTestPoint(event.x, event.y) then 		self.touch = true 		event:stopPropagation() 	end	 end  function restartUp (self, event) 	if self.touch then 		sceneManager:changeScene("level", 1, SceneManager.flipWithFade, easing.outBack) 	end end  function level:onEnterFrame()  	self.world:step(1/60, 8, 3) 	 	local screenW = application:getContentWidth() 	local screenH = application:getContentHeight() 	 	local offsetX = 0; 	local offsetY = 0; 	 	if((self.screenW - self.bird_idle:getX()) < screenW/2) then 		offsetX = -self.screenW + screenW  	elseif(self.bird_idle:getX() >= screenW/2) then 		offsetX = -(self.bird_idle:getX() - screenW/2) 	end 	 	self:setX(offsetX) 	 	if((self.screenH - self.bird_idle:getY()) < screenH/2) then 		offsetY = -self.screenH + screenH  	elseif(self.bird_idle:getY()>= screenH/2) then 		offsetY = -(self.bird_idle:getY() - screenH/2) 	end 	 	self:setY(offsetY) 	 	 	for i = 1, self:getNumChildren() do 		local sprite = self:getChildAt(i) 		if sprite.body then 			local body = sprite.body 			local bodyX, bodyY = body:getPosition() 			sprite:setPosition(bodyX, bodyY) 			sprite:setRotation(body:getAngle() * 180 / math.pi) 		end 	end 	 	-- Move intarface with camera 	self.restart:setX(-self:getX()) 	 	if self.bird_idle:getX() < 0 or self.bird_idle:getX() > self.screenW then  		sceneManager:changeScene("level", 1, SceneManager.flipWithFade, easing.outBack) 	end end   function level:onExitBegin()     self:removeEventListener(Event.ENTER_FRAME, self.onEnterFrame, self) end