tanchiki: tk_ui.py annotate

tanchiki

annotate tk_ui.py @ 47:3f2ae407ae0c

Handle keypress & keyrelease properly

author	Daniil Alexeyevsky <me.dendik@gmail.com>
date	Mon, 20 Dec 2010 20:56:34 +0300
parents	dba440ba9a00
children	0598557ca61b

rev	line source
me@43	1 #!/usr/bin/python
me@34	2 import math
me@34	3 import Tkinter as tk
me@38	4 import body
me@34	5 from game import Game
me@40	6 from user import User
me@46	7 from vector import Vector
me@38	8
me@38	9 game_size = 100, 100
me@38	10 keys = {
me@38	11 'a': 'base_left',
me@38	12 'd': 'base_right',
me@38	13 'q': 'turret_left',
me@38	14 'e': 'turret_right',
me@38	15 'w': 'accelerate',
me@38	16 's': 'decelerate',
me@38	17 'x': 'fire',
me@38	18 }
me@38	19
me@44	20 welcome = """Press F5 to start
me@44	21
me@44	22 Keys are:
me@44	23 a, d -- turn tank
me@44	24 q, e -- turn muzzle
me@44	25 w, s -- change speed
me@44	26 x -- fire"""
me@44	27
me@38	28 class Tank(body.Tank):
me@38	29
me@38	30 def on_tick(self, tanks, bullets):
me@38	31 if self.user.base_left:
me@46	32 self.rotate_base(body.base_angle)
me@38	33 if self.user.base_right:
me@46	34 self.rotate_base(-body.base_angle)
me@38	35 if self.user.turret_left:
me@46	36 self.rotate_turret(body.turret_angle)
me@38	37 if self.user.turret_right:
me@46	38 self.rotate_turret(-body.turret_angle)
me@38	39 if self.user.accelerate:
me@46	40 self.accelerate(body.speed_delta)
me@38	41 if self.user.decelerate:
me@46	42 self.accelerate(-body.speed_delta)
me@38	43 if self.user.fire:
me@38	44 self.fire()
me@34	45
me@34	46 class UI(object):
me@38	47
me@34	48 def __init__(self):
me@34	49 self.init_game()
me@34	50 self.init_ui()
me@45	51 self.display_welcome()
me@34	52
me@38	53 def init_game(self):
me@38	54 self.user = User(keys)
me@40	55 w, h = game_size
me@46	56 game = self.game = Game([], [self.user], w, h)
me@46	57 tank = Tank(Vector(50, 50), self.user, self.game)
me@46	58 game.bodies.append(tank)
me@38	59
me@34	60 def init_ui(self):
me@34	61 root = self.root = tk.Tk()
me@47	62 root.bind("<KeyPress>", self.on_keypress)
me@47	63 root.bind("<KeyRelease>", self.on_keyrelease)
me@34	64 canvas = self.canvas = tk.Canvas(root, background="black")
me@34	65 canvas.pack(fill="both", expand="yes")
me@34	66
me@44	67 def display_welcome(self):
me@45	68 root, canvas = self.root, self.canvas
me@41	69 root.update()
me@41	70 w, h = canvas.winfo_width(), canvas.winfo_height()
me@44	71 canvas.create_rectangle(0, 0, w, h, fill="#211")
me@44	72 canvas.create_text(w/2, h/2, text=welcome,
me@44	73 fill="red", justify="center", font="bold 15")
me@41	74
me@47	75 def on_keypress(self, ev):
me@41	76 if ev.keysym == "F5":
me@41	77 self.step()
me@47	78 self.user.on_key(ev.keysym, True)
me@47	79
me@47	80 def on_keyrelease(self, ev):
me@47	81 self.user.on_key(ev.keysym, False)
me@34	82
me@34	83 def step(self):
me@34	84 self.root.after(100, self.step)
me@40	85 self.game.step()
me@34	86 self.redraw()
me@34	87
me@34	88 def redraw(self):
me@34	89 self.canvas.delete("all")
me@34	90 for body in self.game.bodies:
me@34	91 p = body.position
me@34	92 lt = p + Vector(-1,-1) * body.radius
me@34	93 rb = p + Vector(1,1) * body.radius
me@47	94
me@34	95 if isinstance(body, Tank):
me@34	96 t = body.turret * body.radius + p
me@34	97 self.canvas.create_oval(lt.x, lt.y, rb.x, rb.y, fill="green")
me@34	98 self.canvas.create_line(p.x, p.y, t.x, t.y, fill="yellow", width=2)
me@34	99 elif isinstance(body, Bullet):
me@34	100 self.canvas.create_oval(lt.x, lt.y, rb.x, rb.y, fill="red")
me@34	101
me@34	102 if __name__ == "__main__":
me@34	103 UI().root.mainloop()