adding shapes_following_eyes example

examples/shapes/shapes_following_eyes.py

@@ -0,0 +1,96 @@
+"""
+
+raylib [shapes] example - Following Eyes
+
+"""
+
+from pyray import *
+from raylib.colors import (
+    RAYWHITE,
+    BROWN,
+    BLACK,
+    LIGHTGRAY,
+    DARKGREEN,
+)
+from math import (
+    atan2,
+    cos,
+    sin
+)
+
+# Initialization
+# ----------------------------------------------------------------------------------
+screenWidth = 800
+screenHeight = 450
+
+init_window(screenWidth, screenHeight, "raylib [shapes] example - following eyes")
+
+scleraLeftPosition = Vector2(screenWidth / 2.0 - 100.0, screenHeight / 2.0)
+scleraRightPosition = Vector2(screenWidth / 2.0 + 100.0, screenHeight / 2.0)
+scleraRadius = 80.0
+
+irisLeftPosition = Vector2(screenWidth / 2.0 - 100.0, screenHeight / 2.0)
+irisRightPosition = Vector2(screenWidth / 2.0 - 100.0, screenHeight / 2.0)
+irisRadius = 24.0
+
+angle = 0.0
+dx, dy, dxx, dyy = 0.0, 0.0, 0.0, 0.0
+
+set_target_fps(60)
+# ----------------------------------------------------------------------------------
+
+# Main game loop
+while not window_should_close():  # Detect window close button or ESC key
+    # Update
+    # ----------------------------------------------------------------------------------
+    irisLeftPosition = get_mouse_position()
+    irisRightPosition = get_mouse_position()
+
+    # Check not inside the left eye sclera
+    if not check_collision_point_circle(irisLeftPosition, scleraLeftPosition, scleraRadius - 20):
+        dx = irisLeftPosition.x - scleraLeftPosition.x
+        dy = irisLeftPosition.y - scleraLeftPosition.y
+
+        angle = atan2(dy, dx)
+
+        dxx = (scleraRadius - irisRadius)*cos(angle)
+        dyy = (scleraRadius - irisRadius)*sin(angle)
+
+        irisLeftPosition.x = scleraLeftPosition.x + dxx
+        irisLeftPosition.y = scleraLeftPosition.y + dyy
+
+    # Check not inside the right eye sclera
+    if not check_collision_point_circle(irisRightPosition, scleraRightPosition, scleraRadius - 20):
+        dx = irisRightPosition.x - scleraRightPosition.x
+        dy = irisRightPosition.y - scleraRightPosition.y
+
+        angle = atan2(dy, dx)
+
+        dxx = (scleraRadius - irisRadius)*cos(angle)
+        dyy = (scleraRadius - irisRadius)*sin(angle)
+
+        irisRightPosition.x = scleraRightPosition.x + dxx
+        irisRightPosition.y = scleraRightPosition.y + dyy
+
+    # ----------------------------------------------------------------------------------
+
+    # draw
+    # ----------------------------------------------------------------------------------
+    begin_drawing()
+
+    clear_background(RAYWHITE)
+
+    draw_circle_v(scleraLeftPosition, scleraRadius, LIGHTGRAY)
+    draw_circle_v(irisLeftPosition, irisRadius, BROWN)
+    draw_circle_v(irisLeftPosition, 10, BLACK)
+
+    draw_circle_v(scleraRightPosition, scleraRadius, LIGHTGRAY)
+    draw_circle_v(irisRightPosition, irisRadius, DARKGREEN)
+    draw_circle_v(irisRightPosition, 10, BLACK)
+
+    draw_fps(10, 10)
+
+    end_drawing()
+
+# De-Initialization
+close_window()  # Close window and OpenGL context