Update

Paul V Craven · Paul V Craven · commit 2431f76656f3 · 2023-02-23T17:04:30.000-06:00
diff --git a/camera/camera_view.py b/camera/camera_view.py
@@ -35,9 +35,10 @@ def load_texture_pair(filename):
     """
     Load a texture pair, with the second being a mirror image.
     """
+    texture = arcade.load_texture(filename)
     return [
-        arcade.load_texture(filename),
-        arcade.load_texture(filename, flipped_horizontally=True),
+        texture,
+        texture.flip_vertically(),
     ]
 
 class PlayerCharacter(arcade.Sprite):
diff --git a/main.py b/main.py
@@ -33,6 +33,10 @@ def create_views(self):
         view = StartView(3.0)
         self.view_list.append(view)
 
+        from spatial_hash.spatial_hash import SpatialHashDemo
+        view = SpatialHashDemo(4.0)
+        self.view_list.append(view)
+
         from draw_sprites.draw_sprites import DrawSprites
         view = DrawSprites(3.0)
         self.view_list.append(view)
diff --git a/minimap/minimap.py b/minimap/minimap.py
@@ -42,9 +42,10 @@ def load_texture_pair(filename):
     """
     Load a texture pair, with the second being a mirror image.
     """
+    texture = arcade.load_texture(filename)
     return [
-        arcade.load_texture(filename),
-        arcade.load_texture(filename, flipped_horizontally=True),
+        texture,
+        texture.flip_vertically(),
     ]
 
 class PlayerCharacter(arcade.Sprite):
diff --git a/platformer_engine/platformer_engine.py b/platformer_engine/platformer_engine.py
@@ -29,9 +29,10 @@ def load_texture_pair(filename):
     """
     Load a texture pair, with the second being a mirror image.
     """
+    texture = arcade.load_texture(filename)
     return [
-        arcade.load_texture(filename),
-        arcade.load_texture(filename, flipped_horizontally=True),
+        texture,
+        texture.flip_vertically(),
     ]
 
 
diff --git a/spatial_hash/spatial_hash.py b/spatial_hash/spatial_hash.py
@@ -0,0 +1,62 @@
+import random
+import arcade
+from base_view import BaseView
+
+SCREEN_WIDTH = 800
+SCREEN_HEIGHT = 600
+COIN_COUNT = 500
+RECT_WIDTH = 100
+RECT_HEIGHT = 100
+
+
+class SpatialHashDemo(BaseView):
+    """ Main application class. """
+
+    def __init__(self, time_on_screen):
+        super().__init__(time_on_screen)
+        self.rect = (0, RECT_WIDTH, RECT_HEIGHT, 0)
+        self.coin_list = arcade.SpriteList(use_spatial_hash=True)
+        for i in range(COIN_COUNT):
+            coin = arcade.SpriteCircle(7, arcade.color_from_hex_string("#E96479"))
+            coin.position = (
+                random.randrange(SCREEN_WIDTH),
+                random.randrange(SCREEN_HEIGHT),
+            )
+            self.coin_list.append(coin)
+        arcade.set_background_color(arcade.color_from_hex_string("#F5E9CF"))
+        self.change_x = 2
+        self.change_y = 1
+
+    def on_draw(self):
+        self.clear()
+        self.coin_list.draw()
+
+        arcade.draw_lrtb_rectangle_outline(*self.rect, arcade.color_from_hex_string("#4D455D"), border_width=4)
+        for y in range(0, SCREEN_HEIGHT, self.coin_list.spatial_hash.cell_size):
+            for x in range(0, SCREEN_WIDTH, self.coin_list.spatial_hash.cell_size):
+                arcade.draw_rectangle_outline(
+                    x + self.coin_list.spatial_hash.cell_size // 2,
+                    y + self.coin_list.spatial_hash.cell_size // 2,
+                    self.coin_list.spatial_hash.cell_size,
+                    self.coin_list.spatial_hash.cell_size,
+                    color=arcade.color_from_hex_string("#4D455D"),
+                )
+
+    def on_update(self, delta_time):
+        """ Movement and game logic """
+        """ Handle Mouse Motion """
+        l, r, t, b = self.rect
+        l += self.change_x
+        r += self.change_x
+        t += self.change_y
+        b += self.change_y
+        self.rect = (l, r, t, b)
+
+        for sprite in self.coin_list:
+            sprite.color = arcade.color_from_hex_string("#7DB9B6")
+
+        l, r, t, b = self.rect
+        sprites = self.coin_list.spatial_hash.get_sprites_near_rect((l, r, b, t))
+        for sprite in sprites:
+            sprite.color = arcade.color_from_hex_string("#E96479")
+
