Merge pull request #710 from sheenarbw/mouse_sprites

Added sprite that uses mouse as a target

ppb/features/default_sprites.py

@@ -11,6 +11,7 @@ import math
 from ppb import keycodes
 from ppb.events import KeyPressed, KeyReleased
 from dataclasses import dataclass
+import ppb.events as events
 
 
 class TargetSprite(ppb.Sprite):
@@ -131,3 +132,15 @@ class KeyBoardMovementSprite(ppb.Sprite):
             self.direction += ppb.Vector(0, -1)
         if key_event.key == self.key_bindings.down:
             self.direction += ppb.Vector(0, 1)
+
+
+class MouseTargetSprite(TargetSprite):
+    """Sprite that treats your mouse as a moving target.
+
+    :param speed: Distance per second that the sprite travels with linear motion. 
+    If you set the speed to a high number (eg 100) then the sprite can act as a cursor. And if you set it to a lower number then it will chase the mouse menacingly 
+    """
+    def on_mouse_motion(self, event: events.MouseMotion, signal):
+        self.target = event.position
+
+

tests/test_default_sprites.py

@@ -4,7 +4,9 @@ from ppb.features.default_sprites import (
     TargetSprite,
     wasd_direction_key_bindings,
     KeyBoardMovementSprite,
+    MouseTargetSprite
 )
+import ppb.events as events
 
 
 def test_target_sprite_linear():
@@ -134,3 +136,13 @@ def test_keyboard_movement_sprite_move_down_left_wasd():
 
     assert keyboard_sprite.direction.isclose((-1, -1))
     assert keyboard_sprite.position.isclose((-1, -1))
+
+
+def test_mouse_target_sprite():
+    sprite = MouseTargetSprite()
+
+    mouse_position = Vector(123,456)
+    sprite.on_mouse_motion(events.MouseMotion(mouse_position,Vector(0,0),buttons=[]), lambda x:None)
+    assert sprite.target == mouse_position
+
+