From 3a18697242f6cce5b140e1f59239947a4648ef51 Mon Sep 17 00:00:00 2001
From: ennucore <ennucore@gmail.com>
Date: Mon, 20 Sep 2021 10:30:23 +0300
Subject: [PATCH] jumping + turtle gas

---
 turtle_2/jumping.py    | 21 +++++++++++++++++++++
 turtle_2/turtle_gas.py | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 turtle_2/jumping.py
 create mode 100644 turtle_2/turtle_gas.py

diff --git a/turtle_2/jumping.py b/turtle_2/jumping.py
new file mode 100644
index 0000000..fbdab39
--- /dev/null
+++ b/turtle_2/jumping.py
@@ -0,0 +1,21 @@
+import turtle
+
+
+turtle.shape('turtle')
+Vx, Vy = 5, 50
+t = 0
+dt = 0.2
+ay = -3
+x, y = 0, 0
+turtle.up()
+dx0, dy0 = 250, 100
+turtle.goto(-dx0, -dy0)
+turtle.down()
+while True:
+    t += dt
+    x += Vx * dt
+    y += Vy * dt + ay * dt**2/2
+    Vy += ay * dt
+    turtle.goto(x - dx0, y - dy0)
+    if y <= 0:
+        Vy = -Vy * 0.8
diff --git a/turtle_2/turtle_gas.py b/turtle_2/turtle_gas.py
new file mode 100644
index 0000000..3032689
--- /dev/null
+++ b/turtle_2/turtle_gas.py
@@ -0,0 +1,35 @@
+from random import randint
+import turtle
+import math
+
+
+number_of_turtles = 20
+steps_of_time_number = 300
+
+
+pool = [turtle.Turtle(shape='turtle') for i in range(number_of_turtles)]
+for unit in pool:
+    unit.penup()
+    unit.speed(350)
+    unit.goto(randint(-200, 200), randint(-150, 150))
+    unit.left(randint(-180, 180))
+
+
+for i in range(steps_of_time_number):
+    for unit in pool:
+        x, y = unit.xcor() + turtle.screensize()[0] / 2, unit.ycor() + turtle.screensize()[1] / 2
+        if x <= 0 or x >= turtle.screensize()[0]:
+            unit.seth(90 - unit.heading())
+        if y <= 0 or y >= turtle.screensize()[1]:
+            unit.seth(-unit.heading())
+        unit.forward(7)
+        for another_unit in pool:
+            if another_unit == unit:
+                continue
+            if math.hypot(another_unit.xcor() - unit.xcor(), another_unit.ycor() - unit.ycor()) < 6:
+                angle = randint(-180, 180)
+                unit.left(angle)
+                another_unit.right(angle)
+                unit.forward(2)
+                another_unit.forward(2)
+