My first game in Kotlin

Introduction

are you bored at work?

what give you this presenation?

Kotlin

Why Kotlin?

LLVM is future

compilation to js

 

Język dla przemysłu

 

Title Text

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7 best features

Syntax

Function extenions

Receivers

Property delegate

Nullsafe

Highorder functions

Java compability

Libgdx

 

LWJGL

JNI

  • The library accesses native C code through the Java Native Interface (JNI). Bindings to each of the native libraries exist as different modules so developers can make custom builds with only the things they need in a certain program
  • Kotlin external fun

org_lwjgl_opengl_GL11C.c

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GL11C.java

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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_GL11C_glClearColor(
        JNIEnv *__env, 
        jclass clazz, 
        jfloat red, 
        jfloat green, 
        jfloat blue, 
        jfloat alpha
) {
    glClearColorPROC glClearColor = (glClearColorPROC)tlsGetFunction(279);
    UNUSED_PARAM(clazz)
    glClearColor(red, green, blue, alpha);
}
    /**
     * Sets the clear value for fixed-point and floating-point color buffers in RGBA mode. The specified components are stored as floating-point values.
     *
     * @param red   the value to which to clear the R channel of the color buffer
     * @param green the value to which to clear the G channel of the color buffer
     * @param blue  the value to which to clear the B channel of the color buffer
     * @param alpha the value to which to clear the A channel of the color buffer
     * 
     * @see <a target="_blank" href="http://docs.gl/gl4/glClearColor">Reference Page</a>
     */
    public static native void glClearColor(@NativeType("GLfloat") float red, @NativeType("GLfloat") float green, @NativeType("GLfloat") float blue, @NativeType("GLfloat") float alpha);

libgdx

Framework do tworzenia gier 2D/3D

LWJGL is a Java library that enables cross-platform access to popular native APIs useful in the development of graphics (OpenGL), audio (OpenAL) and parallel computing (OpenCL) applications. This access is direct and high-performance, yet also wrapped in a type-safe and user-friendly layer, appropriate for the Java ecosystem.

 

Libgdx is a Java game development framework that provides a unified API that works across all supported platforms.

The framework provides an environment for rapid prototyping and fast iterations. Instead of deploying to Android/iOS/Javascript after each code change, you can run and debug your game on the desktop, natively. Desktop JVM features like code hotswapping reduce your iteration times considerably.

Wieloplatformowość

  • Windows
  • Linux
  • Mac OS X
  • Android (2.2+)
  • BlackBerry
  • iOS
  • Java Applet (requires JVM to be installed)
  • Javascript/WebGL (Chrome, Safari, Opera, Firefox, IE via Google Chrome Frame)

Audio/Input/IO

Grafika

TMX tile map support

https://doc.mapeditor.org/en/stable/manual/layers/

2D Particle Editor

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TexturePacker

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Architektura gry

main loop

entity

Actor

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physics

Box2D support

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light

particles

events

Quo vadis?

Problems

Grafika

Nie musi być skomplikowana, 

można użyć światła, cząsteczek

IoC

How it looks like?

Ending

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By Kamil Lolo

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