From 4aa801b6b17e1c34c05d94850b9450c05f6c60d1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Edvard=20Th=C3=B6rnros?= <edvard.thornros@gmail.com>
Date: Sun, 31 Jan 2021 10:16:53 +0100
Subject: roof and floor

---
 pong/pong.tdy | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/pong/pong.tdy b/pong/pong.tdy
index 5d9b277..fc54e36 100644
--- a/pong/pong.tdy
+++ b/pong/pong.tdy
@@ -100,6 +100,14 @@ update := fn state: State {
     state.ball.x = state.ball.x + delta * state.ball.vx
     state.ball.y = state.ball.y + delta * state.ball.vy
 
+    if state.ball.y < 0. {
+        state.ball.vy = abs(state.ball.vy)
+    }
+
+    if state.ball.y > 20. - 0.2 {
+        state.ball.vy = -abs(state.ball.vy)
+    }
+
 
     ball_and_paddle_check(state.p1.paddle, state.ball)
     ball_and_paddle_check(state.p2.paddle, state.ball)
@@ -121,8 +129,8 @@ init := fn {
     state.ball = Ball()
     state.ball.x = 10.0
     state.ball.y = 10.0
-    state.ball.vx = 3.0
-    state.ball.vy = 0.0
+    state.ball.vx = 1.0
+    state.ball.vy = 2.0
 
     state.p1 = Player()
     state.p1.paddle = Paddle()
-- 
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