TryHard_Engine

We are a pair of students on UPC Barcelona, developing a 3D Engine in C++ with OpenGL. TryHard Engine. In this website all of our work will be explained and detailed. Development cycle took 5 months. The Engine prototype contains just the basics for now, Gameobjects can be created and destroyed with its components.

What we did?

Roger Tello

• Component-based structure.
• GameObjects implementation.
• Loading Geometry & Textures.
• Hierarchy panel & Gameobject parenting.
• Inspector panel to see object properties.
• Created Base Components: Transform, Mesh, Material, Camera…
• Octree for space partitioning.
• Created All of the Engine UI using ImGui.
• Basic Resources Saved to binary.
• Load & Save for gameobjects & components.
• Load & Save for scenes.
• Resource Manager & browser.
• Basic structure for UI system.
• Multicamera & Cam interpolation.
• Prefab System.
• Skybox.
• UI Elements: Canvas, Label, Image, Text, Checkbox…
• Callback System for Buttons & Checkbox.
• Event System.
• Scene Interpolation.

Pol Ferrando

• Display information about hardware
• UI docking
• Performance Panel with stats of each module
• Custom window title bar with manual drag
• Custom textures for the engine
• Basic save to json engine attributes
• Transform component hierarchy based
• Camera based on a frustum as a component and it’s features
• Mousepicking for 3d objects as well as UI
• Time managment
• Implemented Guizmos
• Implemented game mode
• Adapted UI rect transform to work with a relative pos and anchors
• Implemented Screen mode where ui elements are rescaled based on screen size
• Draggable ui items

Subsystem

• Importer: this system will take care of importing the resources when the user drops it into the folder.
• Resource Manager: it will handle all .meta files and binarys.
• User Interface: it will handle the creation of UI for the game.

UI Subsystem

For the last assigment we were asked to create our own system for user interface. We followed the structure of Unity Engine for that. The main pieces that form the High Level System are the following:

• Rect Transform Component: Component similar to the Transform Component, holding position, rotation and scale. Moreover this component contains a rectangle where the UI is going to lay. The component also manages the anchor points and the relative position.

• Component Canvas: A component that will contain all the gameobjects.

• Label: ui element to print text. Text can be changed in size and color, the clipping mode can also be modified as well as the horizontal and vertical overflow (when text overcomes the limits of the rect transform).

• Image: ui element to print images. Materials can be displayed in the plane of the UI image. The image can be tinted.

• Text Input: ui element to write text. It will hold 2 texts. One is the placeholder and the other one is the text showed when the input box is selected.

• Button: UI element that can be clicked. Some functions can be assigned to the button, when the button is pressed, those functions will be executed sequentially. The button will contain a child GameObject with a label.

• CheckBox: UI element that will toggle a boolean of the function attached to it.

New innovations:

• Arguments can be sent to button functions.
• Text Fits to the parent rect transform.
• Change Scene When pressing a button.
• Callbacks readed from simulated script + simulated module scripting.

How to use:

Basics:

• Any gameobject can be picked with the mouse, and it’s transform can be edited with the guizmo or in the inspector.
• To change the guizmo mode, select a mode in the inspector of a transform component.
• After loading models, the current scene can be saved and loaded later.
• Pressing the play button will inter game mode. When exiting this mode, objects will return to the state they were when entering the mode.

Tools:

• Console: Shows and hides the console panel, the console LOGS the start LOGS and when you import geometry it shows the details of it.
• RandomNum: Shows and hides a random generator tool panel.
• Configuration: Shows the configuration panel where we can find a Menu Items with functionalities that apply to the scene or the engine workflow, it also shows the system information.
• Performance: Shows the init and Start-up performance of the modules and the run time graphs of the modules with preupdate, update and post-update, as well as panels.
• Inspector: Shows information about the selected game object and offers some options like changing the texture.
• Hierarchy: Displays the game objects in the scene.
• Explorer: Select and load models
• Tags: Manage the tags of the gameobjects
• Clocks: See the real time and the game time, and accelerate or slow down game time with a slider

Demonstrations

Test scene setup

Help:

• DEMO GUI: shows the original demo panel from ImGui.
• Documentation:opens the github repository page.
• Report a bug:brings you to github issues.
• License:brings you to the MIT license about the github repository

Camera movement:

• WASD: movement (forward,left,backwards,right.
• F: camera focuses the last mesh.
• R & F: move up and down the camera.
• Alt + left mouse click: camera orbits around selected game object with mouse movement.
• Supr: deletes the selected gameobject.
• Mouse wheel: zoom in and out.
• Right Click: look in de direction of mouse movement.
• Import .FBX files: Drag and drop into the scene.

Warning

This Release has a big size due to the size of the textures of the skybox and the t-rex.

Contacts

Github repository link: https://github.com/rogerta97/TryHard_Engine Pol Ferrando: https://github.com/polferrando98 Roger Tello: https://github.com/rogerta97

License

MIT License

Copyright (c) [year] [fullname]

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.