From 7ed124593ebda443fc4d0f1439d1fd8dc602ce72 Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Sun, 1 Aug 2021 11:56:12 +0000
Subject: =?UTF-8?q?began=20building=20a=20universe=20for=20every=20party.?=
 =?UTF-8?q?=20get=20rid=20of=20the=20notes=20file.=20i=20already=20keep=20?=
 =?UTF-8?q?them=20on=20paper.=20adapted=20the=20client=20to=20use=20an=20r?=
 =?UTF-8?q?frame=20for=20drawing.=20implemented=20some=20VModel=20methods?=
 =?UTF-8?q?=20for=20testing.=20FPS2MS=20=E2=86=92=20HZ2MS.=20it=20makes=20?=
 =?UTF-8?q?more=20sense=20and=20is=20shorter.?=
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---
 physics.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'physics.c')

diff --git a/physics.c b/physics.c
index 945ff8c..a1edf54 100644
--- a/physics.c
+++ b/physics.c
@@ -18,6 +18,25 @@ accel(GameState *s, double)
 	return Vec2(0, -k*s->p.y - b*s->v.y);
 }
 
+/*
+ * XXX: remember to take thrust into account, based on user input.
+ */
+static Point2
+accelship(Universe *u, Ship *s, double)
+{
+	double g, d;
+
+	d = vec2len(subpt2(u->star.p, s->p));
+	g = G*u->star.mass/(d*d);
+	return mulpt2(normvec2(subpt2(u->star.p, s->p)), g);
+}
+
+static Point2
+accelbullet(Universe *, Bullet *, double)
+{
+	return Vec2(0,0);
+}
+
 static Derivative
 eval(GameState *s0, double t, double Δt, Derivative *d)
 {
-- 
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