nes: added road, tint demo; extra tools; embed.html fetch remote url

tools/nes/Makefile

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+
+nametable.dat: road.png
+	makechr -e error.png $< #-b 0000ff
+
+road.png: road.py
+	python road.py

tools/nes/road.py

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+#!/usr/bin/python
+
+# Import a library of functions called 'pygame'
+import pygame
+import random
+from math import pi
+ 
+# Initialize the game engine
+pygame.init()
+ 
+# Define the colors we will use in RGB format
+BLACK = (  0,   0,   0)
+WHITE = (255, 255, 255)
+BLUE =  (  0,   0, 255)
+GREEN = (  0, 184,   0)
+
+CURBING = [
+    (136,20,0),
+    (168,16,0),
+]
+
+CENLINE = [
+    (124,124,124),
+    (188,188,188),
+]
+
+MOUNTAINS = [
+    (80,48,0),
+    (172,124,0)
+]
+ 
+# Set the height and width of the screen
+size = [512, 240]
+y0 = 112
+x0 = 256
+screen = pygame.display.set_mode(size)
+ 
+pygame.display.set_caption("Example code for the draw module")
+ 
+#Loop until the user clicks the close button.
+done = False
+clock = pygame.time.Clock()
+ 
+while not done:
+ 
+    # This limits the while loop to a max of 10 times per second.
+    # Leave this out and we will use all CPU we can.
+    clock.tick(10)
+     
+    for event in pygame.event.get(): # User did something
+        if event.type == pygame.QUIT: # If user clicked close
+            done=True # Flag that we are done so we exit this loop
+
+    # All drawing code happens after the for loop and but
+    # inside the main while done==False loop.
+     
+    # Clear the screen and set the screen background
+    screen.fill(BLUE)
+    pygame.draw.rect(screen, GREEN, [0, y0, 512, 240-y0])
+    
+    # draw the road
+    for y in range(y0,240):
+        i = y-y0
+        rw = i*2
+        cw = rw/4
+        lw = rw/32
+        z = 500.0/(i+1)
+        curbcol = CURBING[int(z) % 2]
+        cencol = CENLINE[int(z) % 2]
+        if i < 16:
+            cencol = BLACK #CENLINE[0]
+        if i < 0:
+            curbcol = BLACK #CURBING[0]
+        pygame.draw.line(screen, BLACK, [x0-rw, y], [x0+rw, y], 1)
+        pygame.draw.line(screen, curbcol, [x0-rw-cw, y], [x0-rw, y], 1)
+        pygame.draw.line(screen, curbcol, [x0+rw, y], [x0+rw+cw, y], 1)
+        pygame.draw.line(screen, cencol, [x0-rw/3-lw, y], [x0-rw/3+lw, y], 1)
+        pygame.draw.line(screen, cencol, [x0+rw/3-lw, y], [x0+rw/3+lw, y], 1)
+        
+    # draw mountains
+    h1 = 1
+    h2 = 2
+    for x in range(0,512):
+        pygame.draw.line(screen, MOUNTAINS[0], [x, y0-1], [x, y0-h1], 1)
+        pygame.draw.line(screen, MOUNTAINS[1], [x, y0-1], [x, y0-h2], 1)
+        if random.randint(0,8) > h1:
+            h1 += 1
+        elif h1 > 1:
+            h1 -= 1
+        if random.randint(0,6) > h2:
+            h2 += 1
+        elif h2 > 1:
+            h2 -= 1
+    
+    # Go ahead and update the screen with what we've drawn.
+    # This MUST happen after all the other drawing commands.
+    pygame.display.flip()
+
+pygame.image.save(screen, 'road.png')
+ 
+# Be IDLE friendly
+pygame.quit()