2D Graphics¶

Doriax has full support for 2D game development with sprites, tilemaps, and primitive shapes, backed by the same ECS used for 3D.

Polygons¶

The Polygon object lets you build arbitrary 2D shapes from vertices. This is the simplest way to draw something on screen.

scene = Scene()
triangle = Polygon(scene)

triangle:addVertex(0, -100)
triangle:addVertex(-50, 50)
triangle:addVertex(50, 50)

triangle.position = Vector3(300, 300, 0)
triangle:setColor(0.6, 0.2, 0.6, 1)

Engine.setCanvasSize(1000, 480)
Engine.setScene(scene)

#include "Doriax.h"
using namespace doriax;
#include "Polygon.h"

Scene scene;
Polygon triangle(&scene);

DORIAX_INIT void init() {
    triangle.addVertex(0, -100);
    triangle.addVertex(-50, 50);
    triangle.addVertex(50, 50);

    triangle.setPosition(Vector3(300, 300, 0));
    triangle.setColor(0.6, 0.2, 0.6, 1);

    Engine::setCanvasSize(1000, 480);
    Engine::setScene(&scene);
}

Sprites¶

Sprites display images on screen and are the building blocks of most 2D games. In the editor, the sprite slicer tool cuts a sprite sheet into individual frames you can use for animation.

Common sprite operations include:

Tilemaps¶

Tilemaps let you compose large 2D worlds from reusable tiles. Use the tileset slicer in the editor to cut a tileset image into tiles, then paint them into a tilemap in the scene view.

Tilemaps are designed for large grids of repeated texture regions. Keep individual tiles consistent in size, place collision on separate bodies when possible, and split very large worlds into scenes or chunks so editing and export remain fast.

Screen scaling¶

For 2D games it is important to decide how the canvas scales to different screen sizes and aspect ratios. Doriax provides scaling modes so your game looks correct across devices and window sizes — configure the canvas size and scaling behavior through the Engine API.

Engine.setCanvasSize(1000, 480)
Engine.setScalingMode(Scaling.FITWIDTH)

Next steps¶

For 3D rendering, see 3D Graphics. To add interactions, see Physics.