From 44f5ac32a68a617f93704d44c4339f7db13b323e Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sat, 15 Dec 2018 23:09:32 +0100
Subject: Hacky D2Q9 BGK LBM on GPU using GLSL compute shaders

Improvised on top of computicles's scaffolding.

Works in a world where _works_ is defined as "displays stuff on screen that invokes thoughts of fluid movement".
---
 src/glfw/key_watcher.cc | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/glfw/key_watcher.cc

(limited to 'src/glfw/key_watcher.cc')

diff --git a/src/glfw/key_watcher.cc b/src/glfw/key_watcher.cc
new file mode 100644
index 0000000..21a570a
--- /dev/null
+++ b/src/glfw/key_watcher.cc
@@ -0,0 +1,24 @@
+#include "key_watcher.h"
+
+KeyWatcher::KeyWatcher(GLFWwindow* handle, int key):
+	_handle(handle),
+	_key(key),
+	_last_state(glfwGetKey(_handle, _key))
+{ }
+
+bool KeyWatcher::wasClicked() {
+	switch ( glfwGetKey(_handle, _key) ) {
+		case GLFW_RELEASE:
+			_last_state = GLFW_RELEASE;
+			return false;
+		case GLFW_PRESS:
+			if ( _last_state == GLFW_RELEASE ) {
+				_last_state = GLFW_PRESS;
+				return true;
+			} else {
+				return false;
+			}
+		default:
+			return false;
+	}
+}
-- 
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