from livewires import * begin_graphics() #### Vehicle Components #### def tyre(x,y,r): circle(x,y,r, colour=Colour.black, filled=1) circle(x,y,r/3, colour=Colour.white, filled=1) def mudguard(x,y,r): circle(x,y, endpoints=((x+r+3,y),(x-r-3,y)), colour=Colour.white, filled=1) circle(x,y, endpoints=((x+r+3,y),(x-r-3,y)), colour=Colour.blue) def wheel(x,y,r): mudguard(x,y,r) tyre(x,y,r) def double_wheel(x,y,r): wheel(x,y,r) wheel(x-(2*r+10),y,r) def sedan_front(x,y): box((x,y),(x-60,y+20), filled=1) move(x-20,y+20) draw(x-40,y+40) draw(x-60,y+40) draw(x-60,y+20) def sedan_rear(x,y): box((x-60,y),(x-120,y+20), filled=1) move(x-60,y+40) draw(x-100,y+40) draw(x-105,y+20) move(x-100,y+40) draw(x-100,y+20) def sedan(x,y): sedan_front(x,y) r = 7 wheel(x-20,y,r) sedan_rear(x,y) wheel(x-90,y,r) def taxi(x,y): set_colour(Colour.yellow) sedan(x,y) polygon(((x-50,y+40),(x-52,y+47),(x-55,y+47),(x-57,y+40)), filled=1) def wagon_rear(x,y): box((x-60,y),(x-130,y+20), filled=1) move(x-60,y+40) draw(x-128,y+40) draw(x-130,y+20) move(x-100,y+40) draw(x-100,y+20) def wagon(x,y): sedan_front(x,y) r = 7 wheel(x-20,y,r) wagon_rear(x,y) wheel(x-100,y,r) def convertible_body(x,y,scale,stretch): box((x,y),(x-100*scale-stretch,y+20*scale), filled=1) move(x-20*scale,y+20*scale) draw(x-40*scale,y+40*scale) def convertible(x,y): scale = random_between(7,10) / 10.0 stretch = random_between(0,20) r = 7 convertible_body(x,y,scale,stretch) wheel(x-20*scale,y,r*scale) wheel(x-80*scale-stretch,y,r*scale) def beetle_body(x,y): circle(x-40,y+10, endpoints=((x-16,y+20),(x-64,y+20))) move(x-40,y+20) draw(x-40,y+35) circle(x-20,y, endpoints=((x,y),(x-20,y+20)), filled=1) box((x-20,y),(x-63,y+20), filled=1 ) circle(x-50,y, endpoints=((x-63,y+22),(x-75,y)), filled=1) def beetle(x,y): beetle_body(x,y) r = 6 wheel(x-15,y,r) wheel(x-60,y,r) def ute_rear(x,y): box((x-60,y+5),(x-130,y+20), filled=1) move(x-65,y+40) draw(x-65,y+20) def ute(x,y): sedan_front(x,y) r = 7 mudguard(x-20,y,r) tyre(x-20,y-2,r) ute_rear(x,y) mudguard(x-100,y,r) tyre(x-100,y-2,r) def truck_front(x,y): box((x,y),(x-50,y+35), filled=1) box((x-40,y+35),(x-50,y+60), filled=1) move(x-20,y+35) draw(x-25,y+60) draw(x-40,y+60) def pantech_rear(x,y): box((x-55,y+5),(x-170,y+80), filled=1) box((x-50,y+5),(x-55,y+8), filled=1) def pantech(x,y): truck_front(x,y) r = 10 wheel(x-35,y,r) pantech_rear(x,y) mudguard(x-120,y,r) double_wheel(x-120,y,r) def semi_rear(x,y): box((x-65,y+5),(x-250,y+80), filled=1) box((x-50,y+5),(x-65,y+8), filled=1) def semi(x,y): truck_front(x,y) r = 10 wheel(x-35,y,r) semi_rear(x,y) double_wheel(x-80,y,r) double_wheel(x-200,y,r) #### Get Input from Human #### # def grid: Draw a grid. def grid(g): set_colour(Colour.red) for b in range(4): move(0 + g, b * 100 + g) draw(300 + g, b * 100 + g) move(b * 100 + g, 0 + g) draw(b * 100 + g, 300 + g) # def vehicle_text: Write the choices. def vehicle_text(t): set_colour(Colour.blue) choices = ["sedan", "taxi", "wagon", "convertible", "none", "beetle", "ute", "pantech", "semi"] n = 0 for b in choices[:3]: # For items from the start of the list, stop at 3. # That is, items 0, 1, 2. move(n + t, 200 + t) text(b) n = n + 100 n = 0 for b in choices[3:6]: # For items 3 onwards, stop at 6. # That is, items 3, 4, 5. move(n + t, 100 + t) text(b) n = n + 100 n = 0 for b in choices[6:]: # For items 6 onwards, to the end of the list. # That is, items 6, 7, 8. move(n + t, 0 + t) text(b) n = n + 100 # def ask: Layout a screen that invites a human to click on a type of vehicle. def ask(g, t): move(50, 400) text("Click on the vehicle you would like to see.", size=20, colour=Colour.black) # The " " are important. grid(g) vehicle_text(t) # def get_mouse: Obtain position of mouse when it is clicked. def get_mouse(): begin_mouse() # Look for mouse behaviour. mouse_wait(how="click") # Wait for a mouse click. mp = mouse_position() # Returns mouse's x and y position. # Mouse's x position is mp[0]. # Mouse's y position is mp[1]. end_mouse() # Stop looking for mouse behaviour. return mp # Give back the result. # def which_stripe: Work out which grid column/row was clicked in, # by reverse engineering the placement of the grid lines. def which_stripe(g, m): calculate_stripe = (m - g) / 100 # Since all the inputs to the equation are integers, # dividing using / will give an integer answer. # / will return the quotient and discard the remainder. if 0 <= calculate_stripe <= 2: # If the integer is 0, 1, or 2. stripe = calculate_stripe else: move(50,25) text("You did not click in a square. Please try again.", colour=Colour.pink) stripe = "missed" return stripe # def which_vehicle: Work out which type of vehicle was selected. def which_vehicle(column, row): vehicles = [sedan, taxi, wagon, convertible, 0, beetle, ute, pantech, semi] if row == 0: # Bottom row. vehicle_type = vehicles[column + 6] elif row == 1: # Middle row. vehicle_type = vehicles[column + 3] elif row == 2: # Top row. vehicle_type = vehicles[column + 0] return vehicle_type # def response: Work out which grid square was clicked in, and return corresponding vehicle type. # Input: Mouse position, known location of grid lines. # Output: Chosen vehicle type. def response(g): while True: # do until told to stop. mp = get_mouse() # Get mouse position. column = which_stripe(g, mp[0]) # Determine column. row = which_stripe(g, mp[1]) # Determine row. if column == "missed" or row == "missed": # If click was outside the grid, continue # go back to the beginning of the loop. else: # Otherwise, vehicle_type = which_vehicle(column, row) # determine type of vehicle. break return vehicle_type # def another_picture: Invite human to continue or quit. Obtain answer via keyboard, and return answer. def another_picture(): move(50, 25) text("Do you want another picture? (y,n)", colour=Colour.black) while True: keys = [] # Set the list to be empty. keys = wait_for_keys() # Wait for keyboard activity. # Returns a list of those that were pressed. if "y" in keys: # Check if "y" is in the list. return True elif "n" in keys: return False #### Draw picture as requested #### def draw_vehicle(vehicle_type): Colour.orange = Colour(1.0,0.6,0.0) colours = [Colour.red, Colour.green, Colour.blue, Colour.orange, Colour.pink, Colour.purple] set_colour(colours[random_between(0,5)]) # Randomly choose from the list of colours. vehicle_type(300,200) #### Putting it all together #### # def main_loop: Continue iterations of program until told to stop. def main_loop(): g = 50 # Grid offset from edge of window. t = 60 # Text offset from edge of window. while True: # While True, do the following: clear_screen() ask(g, t) # Request type of vehicle to draw. vehicle_type = response(g) # Work out which type of vehicle was selected. if vehicle_type == 0: # If asked for no vehicle to be drawn, break # then stop. else: clear_screen() draw_vehicle(vehicle_type) # Draw the type of vehicle that was selected. if not another_picture(): # If invitation to continue or quit returns False, break # then stop. main_loop() end_graphics()