- Rebuilt TinyPy

- Non-working trash is cleaned.
- Updated from latest git version. 
- Fixed modules pygame math and others. 
- Removed old modules added new ones.
- All samples work except "net"

git-svn-id: svn://kolibrios.org@8535 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/tinypy/examples/asteroid.py

@@ -0,0 +1,119 @@
+"""
+a simple diversing asteroids simulation
+"""
+
+import sys
+import math
+import random
+import pygame
+if "tinypy" not in sys.version:         # not tinypy
+    import pygame.locals
+
+SCR_WIDTH   = 600
+SCR_HEIGHT  = 600
+NASTEROIDS  = 320       # number of asteroids
+INIT_NASTEROIDS = 80    # initial number of asteroids
+OFFSET      = 20        # max initial offset
+DIV_FACTOR  = 1.1       # diverse factor
+
+class Center(object):
+    x = SCR_WIDTH / 2
+    y = SCR_HEIGHT / 2
+
+class Graphics(object):
+    x = 0
+    y = 0
+    w = SCR_WIDTH
+    h = SCR_HEIGHT    
+    center = Center()
+    BACKGROUND = (0, 0, 0)  # black background
+    
+    def __init__(self):
+        pygame.init()
+        self.screen = pygame.display.set_mode((SCR_WIDTH, SCR_HEIGHT))
+        self.clearScreen()
+    def drawRect(self, sx, sy, w, h, color):
+        sx = int(sx)
+        sy = int(sy)
+        dx = int(sx + w)
+        dy = int(sy + h)
+        for x in range(sx, dx):
+            for y in range(sy, dy):
+                self.screen.set_at((x, y), color)
+    def clearScreen(self):
+        for x in range(SCR_WIDTH):
+            for y in range(SCR_HEIGHT):
+                self.screen.set_at((x, y), self.BACKGROUND)
+    def flipDisplay(self):
+        pygame.display.flip()
+
+class Asteroid(object):
+    graphics = Graphics()
+    def __init__(self):
+        self.x          = 0    # x and y, set to invalid position
+        self.y          = 0
+        self.size       = 1
+        self.color      = [0, 0, 0]
+    def show(self):
+        self.graphics.drawRect(self.x, self.y, self.size, self.size, self.color)
+    def hide(self):
+        self.graphics.drawRect(self.x, self.y, self.size, self.size, self.graphics.BACKGROUND)
+    def update(self):
+        # update asteroids[i]'s position
+        if (self.x <= self.graphics.x or self.x >= self.graphics.w or
+            self.y <= self.graphics.y or self.y >= self.graphics.h):
+            self.x = self.graphics.center.x - OFFSET + OFFSET * 2 * random.random()
+            self.y = self.graphics.center.y - OFFSET + OFFSET * 2 * random.random()
+            self.color[0] = random.randint(20, 255)
+            self.color[1] = random.randint(20, 255)
+            self.color[2] = random.randint(20, 255)
+        else:
+            gx = self.graphics.center.x + (self.x - self.graphics.center.x) * DIV_FACTOR
+            if (math.fabs(self.x - self.graphics.center.x) < 1e-6):
+                gy = self.graphics.center.y + (self.y - self.graphics.center.y) * DIV_FACTOR
+            else:
+                k  = (gx - self.graphics.center.x) / (self.x - self.graphics.center.x)
+                gy = self.graphics.center.y + (self.y - self.graphics.center.y) * k
+            self.x = gx
+            self.y = gy
+            
+        # update self's size
+        self.size = int(5 * ((math.fabs(self.x - self.graphics.center.x) * 2) / self.graphics.w))
+        if self.size <= 1:
+            self.size = 1
+        
+def main():
+    asteroids = []
+    for i in range(INIT_NASTEROIDS):
+        asteroid = Asteroid()
+        asteroid.update()
+        asteroids.append(asteroid)
+    
+    _quit = False
+    while not _quit:
+        for e in pygame.event.get():
+            if e.type in (pygame.locals.QUIT, pygame.locals.KEYDOWN):
+                _quit = True        
+        
+        if (len(asteroids) < NASTEROIDS):
+            asteroid = Asteroid()
+            asteroid.update()
+            asteroids.append(asteroid)
+        
+        for i in range(len(asteroids)):
+            # hide asteroids[i]
+            asteroids[i].hide()
+            
+            # update asteroids[i]
+            asteroids[i].update()
+            
+            # show asteroids[i]
+            asteroids[i].show()
+        
+        # swap display content actually
+        Asteroid.graphics.flipDisplay()
+        
+if __name__ == '__main__':
+    main()
+    print("#OK")
+