improve the proof-of-concept demo(pyv + ECS), name "survival_c"

examples/survival_c/game.py

@@ -12,13 +12,14 @@
 
 def init_game():
     # here only to ensure that pyv is able to dynamically load Add-ons
-    print('Test the hub:')
-    for _ in range(3):
-        obj = pyv.tabletop.StandardCard.at_random()
-        print('    ', obj)
+    # print('Test the hub:')
+    # for _ in range(3):
+    #     obj = pyv.tabletop.StandardCard.at_random()
+    #     print('    ', obj)
     # --- done testing!
 
-    gl_vars.screen = pyv.create_screen(SCR_SIZE)
+    pyv.vars.screen = pyv.create_screen(SCR_SIZE)
+    pyv.vars.clock = pyv.create_clock()
 
     # Define archetype
     pyv.define_archetype("Zombie", ["Position2d", "Health", "Color"])
@@ -69,7 +70,7 @@ def run_zombie_demo():
 
         # Render game graphics
         pyv.flip()
-        gl_vars.clock.tick(MAX_FPS)
+        pyv.vars.clock.tick(MAX_FPS)
 
 
 if __name__ == '__main__':

examples/survival_c/gl_vars.py

@@ -1,6 +1,6 @@
-from pyved_engine.api import *
 
 
-clock = create_clock()
-screen = surface_create((0, 0))
-running = True
+NB_STYLES = 4  # styles for the avatar
+
+space_pressed = False  # used by the input system
+running = True  # used in game.py | game loop

examples/survival_c/systems.py

@@ -6,7 +6,8 @@
 import random
 
 import gl_vars
-from pyved_engine.api import *
+import pyved_engine as pyv
+from pyved_engine import *  # need to import all constants for keys etc.
 
 
 __all__ = [  # Careful: the order specified below... It really matters!
@@ -17,11 +18,6 @@
 ]
 
 
-# -------- internal stuff -----------
-_pressed_space = False
-NB_STYLES = 4
-
-
 def _blitRotateCenter(surf, image, topleft, angle):
     rotated_image = surface_rotate(image, angle)
     new_rect = rotated_image.get_rect(center=image.get_rect(topleft=topleft).center)
@@ -51,13 +47,13 @@ def update_positions(entities, components):
 
 
 def render_graphics(entities, components):
-    gl_vars.screen.fill((0, 0, 0))  # Clear screen before rendering
+    pyv.vars.screen.fill((0, 0, 0))  # Clear screen before rendering
 
     for entity in entities:
         if archetype_of(entity) == "Zombie":
             x, y = entity["Position2d"]
             color = entity["Color"]
-            draw_polygon(gl_vars.screen, color, [(x, y), (x + 20, y), (x + 10, y + 20)])
+            draw_polygon(pyv.vars.screen, color, [(x, y), (x + 20, y), (x + 10, y + 20)])
 
         if "Gun" in entity:
             # - old way to draw the player
@@ -70,21 +66,19 @@ def render_graphics(entities, components):
             #               (x + 10 + 20 * math.cos(angle), y + 10 + 20 * math.sin(angle)), 2)
 
             # - new way to draw the player
-            _draw_player(gl_vars.screen)
+            _draw_player(pyv.vars.screen)
 
 
 def handle_player_input(entities, components):
-    global _pressed_space
-
     keys = get_pressed_keys()
     player = find_by_archetype("Player")
     if keys[K_SPACE]:
         _pressed_space = True
     else:
-        if _pressed_space:
+        if gl_vars.space_pressed:
             _pressed_space = False
             x = player["Gfx"]["Style"]
-            player["Gfx"]["Style"] = (x + 1) % NB_STYLES
+            player["Gfx"]["Style"] = (x + 1) % gl_vars.NB_STYLES
     if keys[K_UP]:
         player["Position2d"][1] -= 2
     elif keys[K_DOWN]: