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Tipos de primitivas

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Motores gráficos en videojuegos: game engine

Université autonome de Barcelone

3.9 (88 notes) | 5K étudiants inscrits

Cours 4 de 6 dans Diseño y Creación de videojuegos Spécialisation

Visualiser le programme de cours

VERSIÓN EN ESPAÑOL Para todas aquellas personas que han querido saber cómo se creaba un videojuego, en este curso vamos a explicar cómo crear un pequeño motor, uno de los elementos nucleares de cualquier videojuego. El curso persigue comprender su concepto, entender qué es ese núcleo que en terminología inglesa se conoce como 'game engine', Analizaremos no solo su papel, sino qué utilidades debe proporcionar para ser utilizado en un videojuego. Y todo ello, explicando cómo crear un pequeño motor desde cero, que nos permitirá crear un videojuego en DirectX11. Un curso donde cualquier persona podrá entender los conocimientos básicos sobre el funcionamiento de un motor, y donde las personas con formación en programación aprenderán a crear su propio motor. El curso está estructurado de tal forma que desde el primer día tengamos resultados en pantalla y cualquier persona pueda seguir el propio curso. El resultado será un pequeño motor de videojuegos 3D sobre DirectX11, donde crearemos un pequeño videojuego de tipo FPS. IMPORTANTE Subtítulos en inglés disponibles. _________________ ENGLISH VERSION For those who ever wanted to know how to create a video game, in this course we will explain how to create a small engine, one of the main elements in any video game. This course wants to understand their concept, understand what is this nucleus called 'game engine'. We will analyze their role and which utility it has to provide in aim to be used in a video game. We will do all this by explaining how to create a small engine which will allow us to create a DirectX11 video game. A course in which anyone will be able to understand the basic knowledges on an engine's functioning, and where people who have studied programming will be able to create their own engine. This course is structured so that from the first day we have results on screen and anyone can follow them. IMPORTANT English subtitles are available for this course.

Avis

3.9 (88 notes)

5 stars
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4 stars
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AJ

Feb 25, 2016

Muy buen curso, lleva el avance muy rápido, pero explica lo elemental.

JM

Sep 27, 2017

Fue el mejor curso en internet que he visto... no esperaba menos

À partir de la leçon

Mallas 3D y Física

En este módulo aprenderemos los conocimientos para poder renderizar modelos 3D exportados de una herramienta 3D Studio MAX en formato ASE. Por otra parte aprenderemos a cargar texturas en nuestro motor que podremos utilizar en nuestros modelos. Por último conoceremos los fundamentos de una librería de física como nVidia Physx que nos permitirá controlar la física y colisiones de nuestro videojuego.

Tipos de primitivas5:08

Renderable Vertex11:21

Ficheros Ase (Parte I)17:47

Ficheros ASE (Parte II)9:21

Bounding Box y Bounding Sphere. Texturas12:29

Enseigné par

Enric Martí Gòdia
Associate Professor
Jordi Arnal Montoya
CEO en Kaneda Games y Colaborador docente

Here begins

the second module inside the "Creation of Video games: Art and technology" course.

Video games technology.

This module's contents are:

Kinds of primitives,

Renderable Vertexes,

ASE Files,

Bounding Box and bounding spheres,

Textures,

Scenario,

Physics and Items.

In Ignite11 we will be able to paint different primitive types,

that is, different formats and how we are going to paint geometry in our video game.

The two kinds of primitives we are going to use are lines and triangles,

which are the most used, especially triangles.

Inside each of those kinds of primitives we can find

the stripified lines and the lines list.

And on another side the list of triangles and stripified triangles.

How does this work?

The triangles list is defined this way:

first we define 2 vertexes and we paint a line.

This would be the first list, the first line in a list of lines.

The second line would be defined by the next two vertexes.

They will define this second line.

The next couple of vertexes is the third line.

So we will need as many vertexes

as vertexes are found in the lines.

So in this case we've got 3 lines, 2 vertexes per line.

That makes 6 vertexes.

For the stripified lines, the creation process is different.

If we have the same 6 vertexes we saw in the previous case,

stripified lines work this way:

with the two first vertexes we create a line.

With the last and the new vertex, we create another line.

With the last vertex and a new one we create another line.

With the last and a new vertex we create another line

and with the last one and the new vertex we create another line.

This would be the case of stripified lines.

For the triangles it will be something similar.

In this case we are going to create 3 vertexes in our space.

Now we are going to paint the triangle composed by those 3 vertexes.

The next 3 vertexes will define the next triangle.

This would be a linear list of triangles.

So we will have

3 vertexes per triangle, so if we have 2 triangles as in this case

we will need 6 vertexes to paint two primitives in the triangles list.

In the case of the stripified triangles, it is similar to the stripified lines.

A beautiful aspect.

We will paint a triangle in three vertexes.

A fourth vertex, a fifth vertex,

and a sixth and a seventh vertex.

In the case of stripified triangles,

the first 3 vertexes define our first triangle.

The last 2 vertexes plus the new one define another triangle.

The last 2 vertexes plus the new one define another triangle.

The last 2 vertexes plus the new one define another triangle.

And the last 2 vertexes plus the new one define another triangle.

So in this case we have used 7 vertexes to paint 5 triangles.

Those would be stripified triangles.

stripified triangles are more efficient when painting

than lists of triangles.

However, we will use triangle lists as they are more comfortable

and easier to create.

It's true that stripified triangles have a very common use

in a kind of rendering or effect that is very used in video games.

In this case the effect used for stripified triangles

is the light beams.

In example, let's imagine we have a sword.

Sorry for my bad drawing skills.

We've got a sword.

We can give it a light beam,

a sword with an aura.

So we will have this sword in different moments.

This will be the time 0.

This will be the time 1, this will be the time 2.

For each of those moments we will choose the same points of the sword.

And we are going to take the two vertexes of this sword.

So through stripified triangles we will paint the two first

vertexes and the third one of the ones we have created, we will paint a triangle.

With the last two ones and the new vertex, we will paint another triangle.

With the last two ones and the new vertex, we will paint another triangle.

With the last two ones and the new vertex, we will paint another triangle.

This means through striped triangles we can create

the halo left by a sword on the air in a video game.

So this would be done through stripified triangles.

As I show you here.

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