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tankExample.py
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tankExample.py
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from tkinter import *
import math
###############################################
## Objects
###############################################
class Tank(object):
def __init__(self, x, y, sizeX, sizeY, color1, color2, angle, rotSpeed,
moveSpeed,canvasWidth, canvasHeight):
self.x = x
self.y = y
self.sizeX = sizeX
self.sizeY = sizeY
self.treadSizeY = 0.15*self.sizeY
self.treadSizeX = 0.1*self.sizeX
self.nozzleSizeY = 0.2*self.sizeY
self.nozzleSizeX = 0.25*self.sizeX
self.diag = ((self.sizeX/2)**2+(self.sizeY/2)**2)**.5
self.tankColor = color1
self.nozzleColor = color2
self.canvasHeight = canvasHeight
self.rotSpeed = rotSpeed
self.moveSpeed = moveSpeed
self.canvasWidth = canvasWidth
self.angle = angle #degree val for angle
self.theta = (self.angle*math.pi)/180 #rad val for angle
def draw(self, canvas):
theta = self.theta #temp var for theta
verts = []
theta += math.atan2(self.sizeY,self.sizeX) #calc theta for 1st point
verts.append(self.x+self.diag*math.cos(theta)) #vert1x
verts.append(self.y-self.diag*math.sin(theta)) #vert1y
theta+=2*(math.atan2(self.sizeX,self.sizeY))#add to theta for 2nd point
verts.append(self.x+self.diag*math.cos(theta)) #vert2x
verts.append(self.y-self.diag*math.sin(theta)) #vert2y
theta+=2*(math.atan2(self.sizeY,self.sizeX))#add to theta for 3rd point
verts.append(self.x+self.diag*math.cos(theta)) #vert3x
verts.append(self.y-self.diag*math.sin(theta)) #vert3y
theta+=2*(math.atan2(self.sizeX,self.sizeY))#add to theta for 4th point
verts.append(self.x+self.diag*math.cos(theta)) #vert4x
verts.append(self.y-self.diag*math.sin(theta)) #vert4y
# canvas.create_rectangle(verts[2]-self.treadSizeX,
# verts[3]-self.treadSizeY,
# verts[0]+self.treadSizeX,
# verts[1]+self.treadSizeY,
# fill = "black") #Tank Left Treads
# canvas.create_rectangle(verts[4]-self.treadSizeX,
# verts[5]-self.treadSizeY,
# verts[6]+self.treadSizeX,
# verts[7]+self.treadSizeY,
# fill = "black") #Tank Right Treads
canvas.create_polygon(verts[0],verts[1],verts[2],verts[3],
verts[4],verts[5],verts[6],verts[7],
fill = self.tankColor) #draw body of tank
cx,cy = (verts[0]+verts[6])//2, (verts[1]+verts[7])//2 #avg of 1,4 verts
r = 10 #random test magic val
canvas.create_oval(cx-r,cy-r,cx+r,cy+r, fill = self.nozzleColor) #temp nozzle
def rotateLeft(self):
self.angle += self.rotSpeed
self.theta = (self.angle*math.pi)/180
def rotateRight(self):
self.angle -= self.rotSpeed
self.theta = (self.angle*math.pi)/180
def moveForward(self):
self.x+=self.moveSpeed*math.cos(self.theta)
self.y-=self.moveSpeed*math.sin(self.theta)
def moveBackward(self):
self.x-=self.moveSpeed*math.cos(self.theta)
self.y+=self.moveSpeed*math.sin(self.theta)
def shoot(self,data):
bullet = Bullet(self.x,self.y,self.nozzleColor,10,5,self.angle,
self.canvasHeight,self.canvasWidth)
data.bullets.append(bullet)
class Bullet(object):
def __init__(self,x,y,color,radius,speed,angle,canvasHeight,canvasWidth):
self.x = x
self.y = y
self.color = color
self.radius = radius
self.speed = speed
self.angle = angle
self.theta = (self.angle*math.pi)/180 #rad val for angle
self.canvasHeight = canvasHeight
self.canvasWidth = canvasWidth
def draw(self,canvas):
x0,y0 = self.x-self.radius, self.y-self.radius
x1,y1 = self.x+self.radius, self.y+self.radius
canvas.create_oval(x0,y0,x1,y1,fill=self.color)
def move(self):
self.x+=self.speed*math.cos(self.theta)
self.y-=self.speed*math.sin(self.theta)
################################################
## Model
################################################
def init(data):
data.x, data.y = data.width//2, data.height//2
data.moveSpeed = 5
data.rotateSpeed = 5
data.tankSizeX,data.tankSizeY = 100,80
data.angle = 0
data.tank = Tank(data.x,data.y,data.tankSizeX,data.tankSizeY,"green","red",
data.angle,data.rotateSpeed,data.moveSpeed,
data.width, data.height)
data.bullets = []
data.gameOver = False
################################################
## Control
################################################
def keyPressed(event, data):
if (event.keysym == "Left"):
data.tank.rotateLeft()
if (event.keysym == "Right"):
data.tank.rotateRight()
if (event.keysym == "Up"):
data.tank.moveForward()
if (event.keysym == "Down"):
data.tank.moveBackward()
if (event.keysym == "space"):
data.tank.shoot(data)
def mousePressed(event, data):
pass
def timerFired(data):
for bullet in data.bullets:
bullet.move()
################################################
## View
################################################
def redrawAll(canvas, data):
if (not data.gameOver):
data.tank.draw(canvas)
for bullet in data.bullets:
bullet.draw(canvas)
##################################################
##Run Function
##################################################
def run(width=300, height=300): #Run function adapted from notes
def redrawAllWrapper(canvas, data):
canvas.delete(ALL)
redrawAll(canvas, data)
canvas.update()
def mousePressedWrapper(event, canvas, data):
mousePressed(event, data)
redrawAllWrapper(canvas, data)
def keyPressedWrapper(event, canvas, data):
keyPressed(event, data)
redrawAllWrapper(canvas, data)
def timerFiredWrapper(canvas, data):
timerFired(data)
redrawAllWrapper(canvas, data)
canvas.after(data.timerDelay, timerFiredWrapper, canvas, data)
# Set up data and call init
class Struct(object): pass
data = Struct()
data.width = width
data.height = height
data.timerDelay = 50 # milliseconds
init(data)
# create the root and the canvas
root = Tk()
canvas = Canvas(root, width=data.width, height=data.height)
canvas.pack()
# set up events
root.bind("<Button-1>", lambda event:
mousePressedWrapper(event, canvas, data))
root.bind("<Key>", lambda event:
keyPressedWrapper(event, canvas, data))
timerFiredWrapper(canvas, data)
# and launch the app
root.mainloop() # blocks until window is closed
print("bye!")
run(800, 800)