class game():
    def __init__(self):
        self.osmodule = __import__("os")
        self.size = self.osmodule.get_terminal_size()
        self.map = {}
        for i in range(self.size.lines):
            for f in range(self.size.columns):
                self.map["{}:{}".format(i, f)] = " "
        
        self.objects = []
    
    def update(self):
        for i in self.objects:
            self.map["{}:{}".format(round(i.y), round(i.x))] = " "

        for i in self.objects:
            i.x -= i.xvelocity
            i.y -= i.yvelocity



            if round(i.y) == self.size.lines or i.y > self.size.lines:
                i.y += i.yvelocity
                i.yvelocity = 0
            elif round(i.y) <= 0:
                i.y += i.yvelocity
                i.yvelocity = 0
            else:
                if "{}:{}".format(round(i.y+1), round(i.x)) in self.map:
                    if self.map["{}:{}".format(round(i.y+1), round(i.x))] != " ":
                        i.y += i.yvelocity
                        i.yvelocity = 0
                    else:
                        i.yvelocity -= i.gravity

            if round(i.x) == self.size.columns or i.x > self.size.columns:
                i.x += i.xvelocity
                i.xvelocity = 0
            elif round(i.x) <= 0:
                i.x += i.xvelocity
                i.xvelocity = 0

            if i.xvelocity != 0:
                if i.xvelocity >= i.antixforce:
                    if i.xvelocity > 0:
                        i.xvelocity -= i.antixforce
                    elif i.xvelocity < 0:
                        i.xvelocity += i.antixforce
                else:
                    i.xvelocity = 0

        for i in self.objects:
            self.map["{}:{}".format(round(i.y), round(i.x))] = i.character
        self.osmodule.system('cls' if self.osmodule.name == 'nt' else 'clear')
        for i in range(self.size.lines):
            self.temp = ""
            for f in range(self.size.columns):
                self.temp = self.temp + self.map["{}:{}".format(i, f)]
            print(self.temp)
    
    def addobj(self, obj):
        try:
            obj.checkifobj
        except AttributeError:
            raise TypeError("given object is not an object")
    
        if not 0 <= obj.x <= self.size.columns:
            raise ValueError("given object is out of bounds")
        if not 0 <= obj.y <= self.size.lines:
            raise ValueError("given object is out of bounds")
        
        self.objects.append(obj)
        
class object():
    def __init__(self, character, gravity=0.1, x=0, y=0, antixforce=0.1):
        self.character = character
        self.gravity = gravity
        self.x = x
        self.y = y
        self.antixforce = antixforce
        self.xvelocity = 0
        self.yvelocity = 0
        self.checkifobj = None
        

if __name__ == "__main__":
    print("this is a demo program for the hashengine")
    print("use w, a, s, d to control the hashtag. the 2 is an ai that follows you. q will exit the demo")
    input("enter to continue")
    import time
    import ctypes
    import os

    def isAdmin():
        try:
            is_admin = (os.getuid() == 0)
        except AttributeError:
            is_admin = ctypes.windll.shell32.IsUserAnAdmin() != 0
        return is_admin
    if not isAdmin():
        print("error: must run as administrator to run demo")
        exit()
    import keyboard
    gameclass = game()
    box = object("#", y=10, gravity=0.1, antixforce=1)
    ai = object("2", y=10, x=10, gravity=0)
    gameclass.addobj(box)
    gameclass.addobj(ai)    
    while True:
        if box.x > ai.x:
            ai.xvelocity = -0.3
        elif box.x < ai.x:
            ai.xvelocity = 0.3

        if box.y > ai.y:
            ai.yvelocity = -0.3
        elif box.y < ai.y:
            ai.yvelocity = 0.3
            
        if keyboard.is_pressed("d"):
            box.xvelocity -= 1
        elif keyboard.is_pressed("a"):
            box.xvelocity += 1
        elif keyboard.is_pressed("w"):
            box.yvelocity += 1
        elif keyboard.is_pressed("s"):
            box.yvelocity -= 1
        elif keyboard.is_pressed("q"):
            exit()
        gameclass.update()
        print(box.yvelocity)
        print(box.xvelocity)
        time.sleep(0.05)