JavaBase API

A lightweight, turtle-graphics based game engine for Java.

JavaBase API

Eine leichtgewichtige, Turtle-Grafik basierte Spiele-Engine für Java.

Getting Started

Erste Schritte

JavaBase is a minimal framework that provides a 60 FPS game loop and a center-oriented coordinate system. It uses Turtle Graphics logic (drawing by moving a pen) alongside modern helper methods for shapes and text.

JavaBase ist ein minimales Framework, das einen 60-FPS-Game-Loop und ein zentriertes Koordinatensystem bietet. Es nutzt die Logik der Turtle-Grafik (Zeichnen durch Bewegen eines Stifts) zusammen mit modernen Hilfsmethoden für Formen und Text.

public class MyGame extends CoreGame {
    public void start() { /* Setup */ }
    public void draw() { /* Render */ }
    public void input(Input in) { /* Logic */ }
}

package engine.core

public abstract class CoreGame

The base class for your game. All drawing coordinates are relative to the center of the screen (0,0).

Die Basisklasse für Ihr Spiel. Alle Zeichenkoordinaten beziehen sich auf die Mitte des Bildschirms (0,0).

Method	Methode	Description	Beschreibung
`start()`	Called once when the window opens.
`draw()`	Called every frame. Use drawing commands here.
`input(Input in)`	Called before draw. Use for logic and movement.
`moveTo(x, y)`	Moves pen to absolute coordinate. Draws if pen is down.
`move(dx, dy)`	Moves pen relative to current position.
`penUp() / penDown()`	Toggle whether movement leaves a trail.
`color(Color c)`	Sets the current drawing color.
`setThickness(float t)`	Sets line width (Stroke).
`drawCircle(r, filled)`	Draws a circle at the current pen position.
`drawRect(w, h, filled)`	Draws a rectangle at current position.
`drawText(str, x, y)`	Draws text at specified coordinates.

package engine.input

public class Input

Polling system for user interaction.

Abfragesystem für Benutzerinteraktionen.

// Inside input(Input in)
if (in.isUp()) { /* W or Arrow Up */ }
if (in.isKey(KeyEvent.VK_E)) { /* Custom key */ }
int mx = in.getMouseX(); // 0 is center

Simple Example: Neon Circle

Einfaches Beispiel: Neon-Kreis

This simple script draws a glowing circle that follows the mouse.

Dieses einfache Skript zeichnet einen leuchtenden Kreis, der der Maus folgt.

@Game(name = "Neon Mouse")
public class NeonFollower extends CoreGame {
    double x, y;

    @Override
    public void start() {
        setFontSize(20);
    }

    @Override
    public void input(Input input) {
        // Move towards mouse
        x += (input.getMouseX() - x) * 0.1;
        y += (input.getMouseY() - y) * 0.1;
    }

    @Override
    public void draw() {
        clear();
        
        // Draw Neon Glow
        color(new Color(0, 255, 255, 100));
        setThickness(10);
        moveTo(x, y);
        drawCircle(40, false);
        
        // Draw Core
        color(Color.WHITE);
        setThickness(2);
        drawCircle(40, false);
        
        drawText("FOLLOWING MOUSE", -70, 250);
    }
}