From 4f8a7dcf0b9912df20cebc01b4e364845471aed7 Mon Sep 17 00:00:00 2001
From: Ricardo Cruz <rick2@aeiou.pt>
Date: Sat, 17 Apr 2004 15:21:50 +0000
Subject: [PATCH] Added inverse functions for speed. Might be usefull for
 someone that wants to make enemies to change directions when colliding with
 each other.

SVN-Revision: 545
---
 src/physic.cpp | 10 ++++++++++
 src/physic.h   |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/src/physic.cpp b/src/physic.cpp
index 232475d69..243e8cf1b 100644
--- a/src/physic.cpp
+++ b/src/physic.cpp
@@ -41,6 +41,16 @@ Physic::set_velocity(float nvx, float nvy)
     vy = -nvy;
 }
 
+void Physic::inverse_velocity_x()
+{
+vx = -vx;
+}
+
+void Physic::inverse_velocity_y()
+{
+vy = -vy;
+}
+
 float
 Physic::get_velocity_x()
 {
diff --git a/src/physic.h b/src/physic.h
index 37b6302ff..81e44518f 100644
--- a/src/physic.h
+++ b/src/physic.h
@@ -28,6 +28,10 @@ public:
     /** sets velocity to a fixed value */
     void set_velocity(float vx, float vy);
 
+    /** velocities invertion */
+    void inverse_velocity_x();
+    void inverse_velocity_y();
+
     float get_velocity_x();
     float get_velocity_y();
     
-- 
2.11.0