Pygame controls

_sources/lectures/TWP60/TWP60_6_en.rst

@@ -0,0 +1,85 @@
+Keyboard Events
+================
+
+Event in pygame are handled through the pygame.event module.
+The pygame.event.get() method gets all the events from the event queue. 
+The event queue is a list of event objects that are sent to the program by the window manager 
+or by the pygame program itself.
+The pygame.event.get() method returns a list of pygame.event.Event objects.
+Each Event object has an event type stored in the type attribute. 
+The type attribute can be compared to the constants defined in the pygame.locals module.
+The pygame.locals module defines constants for the event types.
+The event types are used to determine what type of event has occurred. 
+The event types are listed below:
+
++ KEYDOWN
++ KEYUP
++ MOUSEMOTION
++ MOUSEBUTTONDOWN
++ MOUSEBUTTONUP
+
+KEYDOWN is an event type that is fired when a key is pressed down. like when you press a key on the keyboard.
+
+KEYUP is an event type that is fired when a key is released. like when you lift your finger off a key.
+
+.. activecode:: ac_l60_6_en
+    :language: python3
+    :python3_interpreter: brython
+
+    from browser import load, timer
+    load('../../_static/game.js')
+    load('../../_static/pygame.brython.js')
+
+    ^^^^
+    import pygame
+    from pygame.locals import *
+
+    # Pygame to show keyevents
+    # green box moves with arrow keys
+
+    # set up the colors
+    BLACK = pygame.color.Color('black')
+    WHITE = pygame.color.Color('white')
+    GREEN = pygame.color.Color('green')
+
+    screen = pygame.display.set_mode((250, 250))
+    screen.fill(WHITE)
+
+    def main():
+        # set up the block
+        block = pygame.Rect(100, 100, 50, 50)
+
+        # draw the white background onto the surface
+
+
+        # draw a green box onto the surface
+        pygame.draw.rect(screen, GREEN, block)
+
+        # keyboard event loop
+        for event in pygame.event.get():
+            if event.type == pygame.KEYDOWN:
+                print('key down')
+                if event.key == pygame.K_LEFT:
+                    print('left arrow pressed')
+                    block.left -= 10
+                if event.key == pygame.K_RIGHT:
+                    print('right arrow pressed')
+                    block.left += 10
+                if event.key == pygame.K_UP:
+                    print('up arrow pressed')
+                    block.top -= 10
+                if event.key == pygame.K_DOWN:
+                    print('down arrow pressed')
+                    block.top += 10
+
+
+
+            # draw the window onto the screen
+            pygame.display.update()
+
+    pygame.init()
+
+    timer1 = timer.set_interval(main,80)
+
+
+

_sources/lectures/TWP60/toctree_en.rst

@@ -20,3 +20,4 @@ Pygame
    TWP60_3_en.rst
    TWP60_4_en.rst
    TWP60_5_en.rst
+   TWP60_6_en.rst