First player sprite iterations

src/com/gnarwhal/ld46/engine/model/Circle.java

@@ -0,0 +1,120 @@
+package com.gnarwhal.ld46.engine.model;
+
+import com.gnarwhal.ld46.engine.display.Camera;
+import com.gnarwhal.ld46.engine.shaders.Shader;
+import com.gnarwhal.ld46.engine.shaders.Shader2c;
+import org.joml.Vector3f;
+
+public class Circle {
+
+	private static Vao vao;
+	
+	private Camera camera;
+	private Shader2c shader;
+	private Vector3f position;
+	private float radius;
+	private float r, g, b, a;
+	
+	public Circle(Camera camera, float x, float y, float z, float radius) {
+		this.camera = camera;
+		position = new Vector3f(x, y, z);
+		this.radius = radius;
+		shader = Shader.SHADER2C;
+		r = 1;
+		g = 0;
+		b = 0;
+		a = 1;
+		if(vao == null)
+			initVao();
+	}
+	
+	private void initVao() {
+		final int NUM_POINTS = 30;
+		float[] cVertices = new float[NUM_POINTS * 3];
+		int[] cIndices = new int[(NUM_POINTS - 2) * 3];
+		for (int i = 0; i < cVertices.length; i += 3) {
+			double angle = Math.PI * 2 * i / (NUM_POINTS * 3);
+			cVertices[i    ] = (float) Math.cos(angle);
+			cVertices[i + 1] = (float) Math.sin(angle);
+			cVertices[i + 2] = 0;
+		}
+		for (int i = 0; i < cIndices.length; i += 3) {
+			cIndices[i    ] = 0;
+			cIndices[i + 1] = i / 3 + 1;
+			cIndices[i + 2] = i / 3 + 2;
+		}
+		vao = new Vao(cVertices, cIndices);
+	}
+	
+	public void render() {
+		shader.enable();
+		shader.setMVP(camera.getMatrix().translate(position).scale(radius));
+		shader.setColor(r, g, b, a);
+		vao.render();
+	}
+	
+	public Vector3f getPosition() {
+		return position;
+	}
+	
+	public void setX(float x) {
+		position.x = x;
+	}
+	
+	public void setY(float y) {
+		position.y = y;
+	}
+	
+	public void setZ(float z) {
+		position.z = z;
+	}
+	
+	public void setPosition(float x, float y) {
+		position.x = x;
+		position.y = y;
+	}
+	
+	public void setPosition(float x, float y, float z) {
+		position.x = x;
+		position.y = y;
+		position.z = z;
+	}
+	
+	public void setPosition(Vector3f position) {
+		this.position.set(position);
+	}
+	
+	public void translate(float x, float y) {
+		position.x += x;
+		position.y += y;
+	}
+	
+	public void translate(float x, float y, float z) {
+		position.x += x;
+		position.y += y;
+		position.z += z;
+	}
+	
+	public void translate(Vector3f position) {
+		this.position.add(position);
+	}
+	
+	public void setRadius(float radius) {
+		this.radius = radius;
+	}
+	
+	public void setDiameter(float diameter) {
+		this.radius = diameter / 2;
+	}
+	
+	public void setColor(float r, float g, float b, float a) {
+		this.r = r;
+		this.g = g;
+		this.b = b;
+		this.a = a;
+	}
+	
+	public boolean contains(Vector3f vector) {
+		return (position.sub(vector, new Vector3f()).lengthSquared() < radius * radius);
+	}
+}