Player.java

package game.entity;

import org.lwjgl.glfw.GLFW;

import game.Options;
import game.graphics.Shader;
import game.graphics.Texture;
import game.graphics.VertexArray;
import game.input.Input;
import game.math.Matrix4f;
import game.math.Vector3f;

public class Player {
	
	private float SIZE = 1.0f;
	private VertexArray mesh;
	private Texture texture;
	
	private Vector3f position = new Vector3f();
	
	private int playerKeyUp, playerKeyDown, playerKeyLeft, playerKeyRight;	
	
	public Player() {
		float[] vertices = new float[] {
			-SIZE / 2.0f, -SIZE / 2.0f, 0.2f,
			-SIZE / 2.0f,  SIZE / 2.0f, 0.2f,
			 SIZE / 2.0f,  SIZE / 2.0f, 0.2f,
			 SIZE / 2.0f, -SIZE / 2.0f, 0.2f,
		};
		
		byte[] indices = new byte[] {
			0, 1, 2,
			2, 3, 0
		};
		
		float[] tcs = new float[] {
			0, 1,
			0, 0,
			1, 0,
			1, 1
		};
		
		mesh = new VertexArray(vertices, indices, tcs);

		setColor();
		
		if (Options.isWASD) {
			playerKeyUp = GLFW.GLFW_KEY_W;
			playerKeyDown = GLFW.GLFW_KEY_S;
			playerKeyLeft = GLFW.GLFW_KEY_A;
			playerKeyRight = GLFW.GLFW_KEY_D;
		} else {
			playerKeyUp = GLFW.GLFW_KEY_UP;
			playerKeyDown = GLFW.GLFW_KEY_DOWN;
			playerKeyLeft = GLFW.GLFW_KEY_LEFT;
			playerKeyRight = GLFW.GLFW_KEY_RIGHT;
		}
	}
	
	public void update() {
		if (Input.keys[playerKeyUp]) {
			position.y += 0.1f;
		}
		if (Input.keys[playerKeyDown]) {
			position.y -= 0.1f;
		}
		if (Input.keys[playerKeyLeft]) {
			position.x -= 0.1f;
		}
		if (Input.keys[playerKeyRight]) {
			position.x += 0.1f;
		}
		
//		System.out.println("At (" + position.x + ", " + position.y + ")");
		
		// Just for testing, change color by pressing corresponding number buttons
		if (Input.keys[GLFW.GLFW_KEY_0]) {
			Options.setBallColor(0);
			setColor();
		} else if (Input.keys[GLFW.GLFW_KEY_1]) {
			Options.setBallColor(1);
			setColor();
		} else if (Input.keys[GLFW.GLFW_KEY_2]) {
			Options.setBallColor(2);
			setColor();
		}
	}
	
	public void render() {
		Shader.PLAYER.enable();
		Shader.PLAYER.setUniformMat4f("ml_matrix", Matrix4f.translate(position));
		texture.bind();
		mesh.render();
		Shader.PLAYER.disable();
	}
	
	public float getY() {
		return position.y;
	}
	
	private void setColor() {
		texture = Options.getBallTexture();
	}
}