From 5ed96bbb722ab9c48203acc532403c86389f4529 Mon Sep 17 00:00:00 2001
From: tulpenkiste <noctaliavibing@gmail.com>
Date: Sun, 21 May 2023 22:20:09 +0100
Subject: [PATCH] Add logging function callback

---
 engine/source/callback.d      |  5 +++++
 engine/source/core/engine.d   |  7 ++++++-
 engine/source/logging/types.d |  9 +++++++++
 test/source/app.d             | 10 +++++++++-
 4 files changed, 29 insertions(+), 2 deletions(-)
 create mode 100644 engine/source/callback.d
 create mode 100644 engine/source/logging/types.d

diff --git a/engine/source/callback.d b/engine/source/callback.d
new file mode 100644
index 0000000..61ea62f
--- /dev/null
+++ b/engine/source/callback.d
@@ -0,0 +1,5 @@
+module gameengine.callback;
+
+import gameengine.logging.types;
+
+alias LoggerCallback = void function(LoggingSeverity severity, string message);
\ No newline at end of file
diff --git a/engine/source/core/engine.d b/engine/source/core/engine.d
index 4267d22..9815cc2 100644
--- a/engine/source/core/engine.d
+++ b/engine/source/core/engine.d
@@ -2,6 +2,8 @@ module gameengine.core.engine;
 
 import gameengine.graphics.drawable;
 import gameengine.renderer.renderer;
+import gameengine.logging.types;
+import gameengine.callback;
 import gameengine.node.node;
 import std.datetime.stopwatch;
 
@@ -9,12 +11,14 @@ import std.stdio;
 import std.format;
 
 class Engine {
-	this(Renderer renderer) {
+	this(Renderer renderer, LoggerCallback logger) {
 		this.renderer = renderer;
+		this.loggerCallback = logger;
 		previousProcessTick = 0.00001f;
 		previousPhysicsProcessTick = 0.00001f;
 
 		watch.start();
+		this.loggerCallback(LoggingSeverity.Information, "Started ge!");
 	}
 
 	~this() {
@@ -59,4 +63,5 @@ class Engine {
 	private float previousPhysicsProcessTick;
 
 	private Node*[] nodeList;
+	private LoggerCallback loggerCallback;
 }
\ No newline at end of file
diff --git a/engine/source/logging/types.d b/engine/source/logging/types.d
new file mode 100644
index 0000000..75e89be
--- /dev/null
+++ b/engine/source/logging/types.d
@@ -0,0 +1,9 @@
+module gameengine.logging.types;
+
+enum LoggingSeverity {
+	Message = 0,
+	Information,
+	Warning,
+	Error,
+	Fatal
+}
\ No newline at end of file
diff --git a/test/source/app.d b/test/source/app.d
index 70b9787..64dbc10 100644
--- a/test/source/app.d
+++ b/test/source/app.d
@@ -1,15 +1,23 @@
 import std.stdio;
+import std.format;
+import std.conv;
 
 import gameengine.core.engine;
 import gameengine.math.types;
 import gameengine.renderer.renderer;
+import gameengine.logging.types;
+import gameengine.callback;
 import gameengine_rsdl;
 
 import core.thread;
 
+void logger(LoggingSeverity severity, string message) {
+	writeln(format("[%s]: %s", to!string(severity), message));
+}
+
 void main() {
 	Renderer renderer = new RSDL("test", IntVec2(800, 600));
-	Engine engine = new Engine(renderer);
+	Engine engine = new Engine(renderer, &logger);
 
 	ubyte red = 0;
 	bool increase = true;