merge `master` into `loek/design`

6 files changed, 644 insertions, 233 deletions

diff --git a/design.tex b/design.tex
index 75e9ec6..4a8208d 100644
--- a/design.tex
+++ b/design.tex
@@ -24,9 +24,94 @@ workflows.
 
 \section{Overview}
 
-% TODO: high-level design introduction
-% - which parts of the design are prerequisites (and therefore not designed by us)
-% - why are all parts in the following section arranged in the way they are
+As described above, the cr\^epe game engine's goal is to offer a Unity-like
+experience tailored for developing 2D games similar to Jetpack Joyride. That is why
+Jetpack Joyride and Unity provided the main inputs for this game engine design.
+Firstly, a quick overview will be given of the Unity game engine, in particular the
+\gls{ecs}. Secondly, this Overview will quickly talk you through some of the most
+important parts of the game engine, and why these parts are needed to create the
+Jetpack Joyride game.
+
+\subsection{ECS}
+
+The Unity game engine is structured using the Entity Component System (\gls{ecs}) (as
+shown in \cref{fig:ecs-block-diagram}). The \gls{ecs} is made out of three main
+subsystems, namely entities, components and systems. Entities are just IDs. An entity
+is also called a GameObject in Unity and it is made out of one (or more) components.
+Components are the classes that hold the data. The components determine what kind of
+entity it is (e.g. an enemy, audio, and so on). Systems take care of the behavior of
+the entities. Systems mainly read and write the enity's components data. The
+\gls{ecs} clearly distinguishes the data (components) from the functionality
+(systems).
+
+\begin{figure}
+	\centering
+	\includegraphics[width=0.5\textwidth]{img/ECSBlockDiagram.png}
+	\caption{ECS design pattern}
+	Source: \autocite{img:ecs-block-diag}
+	\label{fig:ecs-block-diagram}
+\end{figure}
+
+The \gls{ecs} will also be used at the cr\^epe game engine. Everything (from the
+protagonist and bullets to the walls and enemies) in the cr\^epe game engine will be
+a GameObject (i.e.~entity). The game programmer must program his game by creating all
+kind of GameObjects and placing them in one (or multiple) scenes, just like Unity.
+
+\subsection{Jetpack Joyride}
+
+Firstly, some background information about Jetpack Joyride. Jetpack Joyride is a
+side-scrolling endless runner action video game created by Halfbrick Studios. The
+protagonist is called Barry Steakfries, who the player controls as he steals a
+bullet-powered jet pack from a top-secret laboratory
+\autocite{wikipedia:jetpack-joyride}. A screenshot from the game can be seen in
+\cref{fig:jetpack-joyride} (pleae be aware that the goal of this project is not to
+create an exact replica of Jetpack Joyride, it is only used as a source of
+inspiration).
+
+\begin{figure}
+	\centering
+	\includegraphics[width=0.5\textwidth]{img/JetpackJoyride.jpg}
+	\caption{Jetpack Joyride}
+	Source: \autocite{img:jetpack-joyride}
+	\label{fig:jetpack-joyride}
+\end{figure}
+
+The protagonist wears a jetpack with which he can float in the air. The player must
+avoid obstacles (such as lasers, missiles and zappers) by floating at the right
+height. The player can control the protagonist's jetpack, thereby also controlling
+the protagonist's height. The protagonist experiences gravity and other forces (like
+the force from his jetpack pushing him upwards). These forces should be easily
+programmable by the game programmer. That is why a physics system is needed in the
+cr\^epe game engine. Only very limited/easy physics are needed for Jetpack Joyride,
+that is why this is only supported by the cr\^epe game engine.
+
+The protagonist must avoid obstacles. That is why the cr\^epe game engine should also
+support a collision system. Again, only very limited/easy collision is needed for
+Jetpack Joyride, that is why only very limited/easy collision is supported by the
+cr\^epe game engine.
+
+The game must, of course, also be visible to and playable by the user. A rendering
+system will take care of rendering (displaying) the game and its GameObjects. An
+input system will take care of all the inputs (mouse and keyboard).
+
+Jetpack Joyride also offers audio. A system will take care of the audio in the
+cr\^epe game engine.
+
+Particles are very common in Jetpack Joyride, e.g. underneath the jetpack and behind
+the rockets. Particles will be supported by the particle system.
+
+The start of a scene is described in a scene. However, the game programmer might also
+want to write game logic code which is running during the game (e.g. to switch to a
+new scene or to perform a custom action at a collision). For these purposes, Unity
+uses scripts. These scripts will also be supported by the cr\^epe game engine.
+
+Finally, as an extra, replay functionality will be supported by the cr\^epe game
+engine. A dedicated replay system will be used to support replay.
+
+It turns out that a physics, collision, rendering, input, audio, particle, script,
+and replay system are needed to create the Jetpack Joyride game. These systems form
+the main part of the \gls{ecs}. The design of these eight systems in combination with
+\gls{ecs}, will be briefly discussed in the next parts of this design document.
 
 \section{Design}
 
diff --git a/figs.drawio b/figs.drawio
index e385c5e..3dec3aa 100644
--- a/figs.drawio
+++ b/figs.drawio
@@ -1,6 +1,6 @@
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+<mxfile host="Electron" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/24.7.17 Chrome/128.0.6613.36 Electron/32.0.1 Safari/537.36" version="24.7.17" pages="10">
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@@ -135,22 +135,22 @@
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+        <mxCell id="5-8bWhzpOWirDYeo3-Cj-79" value="+x : &lt;T&gt;" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="5-8bWhzpOWirDYeo3-Cj-78" vertex="1">
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+        <mxCell id="ZHgyX9xX1EySbdOx-EKd-69" value="+y : &lt;T&gt;" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="5-8bWhzpOWirDYeo3-Cj-78" vertex="1">
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@@ -206,10 +206,10 @@
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@@ -223,13 +223,13 @@
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@@ -475,25 +472,6 @@
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@@ -647,68 +625,74 @@
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+        <mxCell id="YKgVrhEJGfdfAljirImL-1" value="+forceOvertime : Vector2" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-1" vertex="1">
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-        <mxCell id="QpFLp5RZX1MbUHJJD-iN-22" value="+endLifespan" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-1" vertex="1">
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+        <mxCell id="iLlbnCJIxoT-n0g-ZMnA-8" value="+Boundary : Vector2" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" vertex="1" parent="V-ZVI1K5bxIVrfWjpJuH-1">
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-          <mxGeometry y="170" width="160" height="17" as="geometry" />
+          <mxGeometry y="204" width="390" height="17" as="geometry" />
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+          <mxGeometry x="2420" y="290" width="330" height="153" as="geometry">
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         </mxCell>
-        <mxCell id="V-ZVI1K5bxIVrfWjpJuH-14" value="+position" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
-          <mxGeometry y="26" width="220" height="17" as="geometry" />
+        <mxCell id="V-ZVI1K5bxIVrfWjpJuH-14" value="+position : Vector2" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
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-        <mxCell id="QpFLp5RZX1MbUHJJD-iN-25" value="+velocity" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
-          <mxGeometry y="43" width="220" height="17" as="geometry" />
+        <mxCell id="QpFLp5RZX1MbUHJJD-iN-25" value="+velocity : Vector2" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
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-        <mxCell id="QpFLp5RZX1MbUHJJD-iN-24" value="+endLifespan" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
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+        <mxCell id="QpFLp5RZX1MbUHJJD-iN-24" value="+endLifespan : double" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
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-        <mxCell id="QpFLp5RZX1MbUHJJD-iN-23" value="+active" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
-          <mxGeometry y="77" width="220" height="17" as="geometry" />
+        <mxCell id="QpFLp5RZX1MbUHJJD-iN-23" value="+active : bool" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
+          <mxGeometry y="77" width="330" height="17" as="geometry" />
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-        <mxCell id="QpFLp5RZX1MbUHJJD-iN-29" value="+lifespan" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
-          <mxGeometry y="94" width="220" height="17" as="geometry" />
+        <mxCell id="QpFLp5RZX1MbUHJJD-iN-29" value="+lifespan : double" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
+          <mxGeometry y="94" width="330" height="17" as="geometry" />
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-          <mxGeometry y="111" width="220" height="8" as="geometry" />
+          <mxGeometry y="111" width="330" height="8" as="geometry" />
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-        <mxCell id="V-ZVI1K5bxIVrfWjpJuH-12" value="+reset(lifespan, position, velocity) : void" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
-          <mxGeometry y="119" width="220" height="17" as="geometry" />
+        <mxCell id="V-ZVI1K5bxIVrfWjpJuH-12" value="+reset(lifespan, position, velocity, forceOverTime) : void" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="V-ZVI1K5bxIVrfWjpJuH-7" vertex="1">
+          <mxGeometry y="119" width="330" height="17" as="geometry" />
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-          <mxGeometry y="136" width="220" height="17" as="geometry" />
+          <mxGeometry y="136" width="330" height="17" as="geometry" />
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@@ -723,6 +707,10 @@
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             <mxPoint x="2510" y="826" as="sourcePoint" />
             <mxPoint x="2420" y="749" as="targetPoint" />
+            <Array as="points">
+              <mxPoint x="2600" y="510" />
+              <mxPoint x="2600" y="510" />
+            </Array>
           </mxGeometry>
         </mxCell>
         <mxCell id="V-ZVI1K5bxIVrfWjpJuH-23" value="0..*" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#000000;" parent="V-ZVI1K5bxIVrfWjpJuH-21" connectable="0" vertex="1">
@@ -745,7 +733,7 @@
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-          <mxGeometry x="600" y="577" width="160" height="153" as="geometry">
+          <mxGeometry x="600" y="577" width="160" height="143" as="geometry">
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@@ -788,7 +776,7 @@
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-        <mxCell id="ZHgyX9xX1EySbdOx-EKd-9" value="0..1" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-8" vertex="1" connectable="0">
+        <mxCell id="ZHgyX9xX1EySbdOx-EKd-9" value="0..1" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-8" connectable="0" vertex="1">
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@@ -891,7 +879,7 @@
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-        <mxCell id="ZHgyX9xX1EySbdOx-EKd-32" value="0..1" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-31" vertex="1" connectable="0">
+        <mxCell id="ZHgyX9xX1EySbdOx-EKd-32" value="0..1" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-31" connectable="0" vertex="1">
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@@ -905,13 +893,13 @@
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+        <mxCell id="ZHgyX9xX1EySbdOx-EKd-34" value="0..1" style="edgeLabel;html=1;align=center;verticalAlign=middle;resizable=0;points=[];fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-33" connectable="0" vertex="1">
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@@ -921,20 +909,17 @@
         <mxCell id="ZHgyX9xX1EySbdOx-EKd-37" value="+tag : string" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-35" vertex="1">
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-        <mxCell id="ZHgyX9xX1EySbdOx-EKd-39" value="+layer : int" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#FF0000;" parent="ZHgyX9xX1EySbdOx-EKd-35" vertex="1">
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-        </mxCell>
         <mxCell id="ZHgyX9xX1EySbdOx-EKd-55" value="+parent : uint32_t" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="ZHgyX9xX1EySbdOx-EKd-35" vertex="1">
-          <mxGeometry y="77" width="160" height="17" as="geometry" />
+          <mxGeometry y="60" width="160" height="17" as="geometry" />
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         <mxCell id="ZHgyX9xX1EySbdOx-EKd-56" value="+childs : vector&lt;uint32_t&gt;" style="text;align=left;verticalAlign=bottom;spacingLeft=4;spacingRight=4;overflow=hidden;rotatable=1;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;rounded=0;shadow=0;html=0;strokeWidth=1;horizontal=1;movable=1;resizable=1;deletable=1;editable=1;locked=0;connectable=1;fontColor=#0000FF;" parent="ZHgyX9xX1EySbdOx-EKd-35" vertex="1">
-          <mxGeometry y="94" width="160" height="17" as="geometry" />
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+            <mxPoint x="600" y="320" as="sourcePoint" />
+            <mxPoint x="650" y="270" as="targetPoint" />
+            <Array as="points">
+              <mxPoint x="600" y="290" />
+              <mxPoint x="600" y="510" />
+            </Array>
+          </mxGeometry>
         </mxCell>
       </root>
     </mxGraphModel>
@@ -1493,7 +1741,7 @@
     </mxGraphModel>
   </diagram>
   <diagram id="C5RBs43oDa-KdzZeNtuy" name="Old">
-    <mxGraphModel dx="2195" dy="715" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
+    <mxGraphModel dx="2062" dy="731" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="827" pageHeight="1169" math="0" shadow="0">
       <root>
         <mxCell id="WIyWlLk6GJQsqaUBKTNV-0" />
         <mxCell id="WIyWlLk6GJQsqaUBKTNV-1" parent="WIyWlLk6GJQsqaUBKTNV-0" />
@@ -2214,7 +2462,7 @@
             </Array>
           </mxGeometry>
         </mxCell>
-        <mxCell id="R9gNofyh4d_rq5U6zAVz-0" value="" style="endArrow=block;html=1;rounded=0;movable=1;resizable=1;rotatable=1;deletable=1;editable=1;locked=0;connectable=1;endFill=0;strokeWidth=1;endSize=14;" parent="WIyWlLk6GJQsqaUBKTNV-1" source="PVU13nk45NJB4w4DQgDw-185" target="PVU13nk45NJB4w4DQgDw-165" edge="1">
+        <mxCell id="R9gNofyh4d_rq5U6zAVz-0" value="" style="endArrow=block;html=1;rounded=0;movable=1;resizable=1;rotatable=1;deletable=1;editable=1;locked=0;connectable=1;endFill=0;strokeWidth=1;endSize=14;" edge="1" parent="WIyWlLk6GJQsqaUBKTNV-1" source="PVU13nk45NJB4w4DQgDw-185" target="PVU13nk45NJB4w4DQgDw-165">
           <mxGeometry width="50" height="50" relative="1" as="geometry">
             <mxPoint x="970" y="175" as="sourcePoint" />
             <mxPoint x="620" y="130" as="targetPoint" />
diff --git a/img/JetpackJoyride.jpg b/img/JetpackJoyride.jpg
new file mode 100644
index 0000000..d1c0e9e
--- /dev/null
+++ b/img/JetpackJoyride.jpg
diff --git a/notulen/wk9-1.txt b/notulen/wk9-1.txt
new file mode 100644
index 0000000..f897d96
--- /dev/null
+++ b/notulen/wk9-1.txt
@@ -0,0 +1,54 @@
+	Documents
+		Research Document
+			Continue adding research information
+		Project plan
+			-
+		Document standard
+			Add updates when needed
+		Requirement
+			physics sub-requirements -> Jaro write document
+			eventmanager sub-requirements -> Wouter write document
+			gameloop sub-requirements -> Wouter write document
+			ecs sub-requirements
+			particles sub-requirement -> Jaro write document
+			resourceManager sub-requirement -> Niels write document
+			rendering sub-requirement
+			script requirements added.
+		design document
+			API in design document
+		Game design
+			-
+	Git
+		Code standard -> LOEK update
+			Show updates
+			Code standard with examples not in main? -> niels
+ 	Environments
+		-
+	Research (POC)
+		[closed] research eventmanager -> Wouter POC is af
+		start research ui -> wouter POC uit
+		start research ai
+		start research playback -> Max
+		start research scenes -> Max
+		star research camera -> Niels POC
+		start research savedata -> loek
+		start research renderer -> niels (sprite & color & transform) POC simple (SDL_GPU voor efficiency verbetering)
+		[closed] start research physics Starting POC -> Jaro
+			More research about physics
+		[closed] start reasearch collision detection -> Jaro
+		[closed] start research particles Starting research -> Jaro (start lifetime. spawning area)
+		start poc animatie -> niels
+	Design
+		Adding design asset class -> niels
+		Adding design resource holder -> niels
+		How does a game designer make a scene?
+	Product
+		-
+	Test
+		-
+	Question Bob
+		mag de API gewoon een interface worden voor wat onderliggend een ECS is.
+	Overig
+		Timers voor systems (profiler van systems)
+
+
diff --git a/sources.bib b/sources.bib
index 7d7b6f7..0ff00a1 100644
--- a/sources.bib
+++ b/sources.bib
@@ -164,7 +164,7 @@
 	date = {2016}
 }
 
-@misc{img:ECSBlockDiagram,
+@misc{img:ecs-block-diag,
 	title = {ECS Diagram},
 	author = {{Unity}},
 	url = {https://docs.unity3d.com/Packages/com.unity.entities@0.1/manual/images/ECSBlockDiagram.png},
@@ -194,3 +194,19 @@
   date = {2024}
 }
 
+@online{wikipedia:jetpack-joyride,
+	author = {{Wikipedia contributors}},
+	title = {Jetpack Joyride --- {Wikipedia}{,} The Free Encyclopedia},
+	year = {2024},
+	url = {https://en.wikipedia.org/w/index.php?title=Jetpack_Joyride&oldid=1252734266},
+	urldate = {2024-10-22},
+}
+
+@misc{img:jetpack-joyride,
+	title = {Jetpack Joyride},
+	author = {Halbrick},
+	url = {https://www.halfbrick.com/games/jetpack-joyride-2},
+	date = {2024},
+	urldate = {2024-10-22},
+}
+
diff --git a/time.txt b/time.txt
index 10bef7e..1b4a5b3 100644
--- a/time.txt
+++ b/time.txt
@@ -91,6 +91,7 @@ loek: 2024-10-29 10m tooling :: documentation (fix plantuml theme errors)
 loek: 2024-10-30 30m project meeting (min/max component count constraints)
 loek: 2024-10-24 10m review :: PR review (#40, #41 and #42)
 loek: 2024-10-31 3h45m project meeting
+loek: 2024-10-31 2h50m docs :: design :: POCs
 
 max: 2024-09-02 1h project kickoff
 max: 2024-09-02 45m first project meeting
@@ -153,6 +154,9 @@ max: 2024-10-29 30m discussing paricles/physics/colliders with Jaro
 max: 2024-10-30 4h refacting class diagram
 max: 2024-10-30 1h50m added SceneManager design to class diagram
 max: 2024-10-30 2h added ReplaySystem design to class diagram
+max: 2024-10-31 30m discussing with Jaro
+max: 2024-10-31 3h45m fiftheent project meeting
+max: 2024-10-31 3h30m creating chapter two of design
 
 wouter: 2024-09-02 1h project meeting :: project kickoff
 wouter: 2024-09-02 45m project meeting
@@ -199,7 +203,11 @@ wouter: 2024-10-21 3h working on design document
 wouter: 2024-10-12 30m reviewing pull request logging
 wouter: 2024-10-24 1h20m project meeting
 wouter: 2024-10-25 2h added collision functionality to event manager
-
+wouter: 2024-10-28 2h added iKeyListener and iMouseListener to poc
+wouter: 2024-10-29 20m discusing api change for UI objects
+wouter: 2024-10-30 15m helping out with gameloop question
+wouter: 2024-10-29 4h created diagrams for gameloop/events/inputs system
+wouter: 2024-10-31 3h45m fiftheent project meeting
 
 
 niels: 2024-09-02 1h project meeting :: project kickoff