[Cocos 2D] 1. Basic Application

Basic application

Basic Components
director - scene을 관리, 조정
scene - 하나의 장면으로 여러개의 layer로 구성
sprite - 2d image, animation (ex. game object in Unity)
layer - scene안에 여러개의 층들

import cocos

**#기존 cocos에 있는 layer를 상속 받아 layer를 생성**
class MainLayer(cocos.layer.Layer):
    is_event_handler = True

    def __init__(self):
        super(MainLayer, self).__init__()
        self.player = cocos.sprite.Sprite('ball.png')
        self.player.position = (320, 240)
        self.player.color = (0, 0, 255)
        self.add(self.player) #layer에 player 추가


if __name__ == '__main__':
    cocos.director.director.init(caption='Hello, Cocos')
    layer = MainLayer()
    scene = cocos.scene.Scene(layer) #씬에 layer 추가
    cocos.director.director.run(scene)

Scene, Layer, Sprite : inherit from CocosNode

[ 상속 관계 : Scene > Layer > Sprite ]

add(child, z = 0, name= None)

• Scene 안에 Layer을 넣을 때
• Layer 안에 Sprite를 넣을 때

kill()

• 자기자신을 지우기

import cocos


class MainLayer(cocos.layer.Layer):
    is_event_handler = True

    def __init__(self, color, x, y):
        super(MainLayer, self).__init__()
        self.player = cocos.sprite.Sprite('ball.png')
        self.player.position = (x, y)
        self.player.color = color
        self.add(self.player)


if __name__ == '__main__':
    cocos.director.director.init(caption='Hello, Cocos')
    layer1 = MainLayer((255,0,0), 320, 240)
    layer2 = MainLayer((255,255,0), 350, 240)
    layer3 = MainLayer((0,255,0), 370, 240)
    scene = cocos.scene.Scene(layer1)
    scene.add(layer2, 5)
    scene.add(layer3, 2)
    cocos.director.director.run(scene)

director

[ cocos.director.director.init ]

➢Creates the main window
➢Pygletwindow

• fullscreen : bool, Window is created in fullscreen. Default is False
• resizable : bool, Window is resizable. Default is False
• vsync : bool, Sync with the vertical retrace. Default is True
• width : int, Window width size. Default is 640
• height : int, Window height size. Default is 480
• caption : string, Window title.
• visible : bool, Window is visible or not. Default is True.

Sprite

• image : string or image name of the image resource or a pygletimage.
• position : tuple position of the anchor. Defaults to (0,0)
• rotation : float the rotation (degrees). Defaults to 0.
• scale : float the zoom factor. Defaults to 1.
• opacity : intthe opacity (0=transparent, 255=opaque). Defaults to 255.
• color : tuple the color to colorize the child (RGB 3-tuple). Defaults to (255,255,255).
• anchor : (float, float) (x,y)-point from where the image will be positions, rotated and scaled in pixels. For example (image.width/2, image.height/2) is the center (default).

Layer

➢is_event_handler= True
➢By Pyglet

• on_key_press(key, modifiers)
• on_key_release(key, modifiers)
• on_mouse_motion(x, y, dx, dy)
• on_mouse_press(x, y, buttons, modifiers)
• on_mouse_drag(x, y, dx, dy, buttons, modifiers)
• modifiers: bitwise or of several constants indicating which modifiers are active at the time of the press (ctrl, shift, capslock, etc.)