From 78097b5496209b56cef9d7fc8d6c13e4c87e0eb1 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Mon, 18 Apr 2022 23:50:31 +0200
Subject: Added simple behaviours for enemies

I don't quite like FallingAndOscillating approach. Perhaps it will be
better to just make it a list/vector in the enemy to allow for
composition.
---
 Oscillating.cpp | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Oscillating.cpp

(limited to 'Oscillating.cpp')

diff --git a/Oscillating.cpp b/Oscillating.cpp
new file mode 100644
index 0000000..4839282
--- /dev/null
+++ b/Oscillating.cpp
@@ -0,0 +1,33 @@
+#include "Oscillating.h"
+
+#include <cmath>
+
+#include <raylib.h>
+
+#include "Generator.h"
+
+
+Oscillating::Oscillating() :
+    m_phase {0},
+    m_shift {1.6f}
+{
+}
+
+
+void
+Oscillating::update(const float dt, Vector2& position, Generator& generator)
+{
+    (void) generator;
+    m_phase += dt * 0.8f;
+    if (m_phase > 2.f)
+        m_phase -= 2.f;
+    const float cos = std::cos(m_phase * M_PI);
+    position.x += cos * m_shift;
+}
+
+
+void
+Oscillating::set_phase(const float phase)
+{
+    m_phase = phase;
+}
-- 
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