cube-game-plus-plus/client/Game.cpp

#include <sstream>

#include "client/Game.h"

Game::Game() : lengthAngle(0.0f), widthAngle(0.0f), texture("resources/textures.png")
{
    for(int x = -6; x <= 6; x++)
    {
        for(int y = -6; y <= 6; y++)
        {
            for(int z = -6; z <= 6; z++)
            {
                if(x * x + y * y + z * z < 16)
                {
                    addCube(x - 3, y - 5, z - 10);
                }
            }
        }
    }
    addCube(-3, -1, -10);
    m.build();
}

void Game::addCube(float x, float y, float z)
{
    const float ERROR = 1.0f / 1024.0f;
    // bottom
    m.add({x - ERROR, y - ERROR, z - ERROR, 0.125f, 0.0f, 0, -1, 0});
    m.add({x + 1 + ERROR, y - ERROR, z - ERROR, 0.1875f, 0.0f, 0, -1, 0});
    m.add({x - ERROR, y - ERROR, z + 1 + ERROR, 0.125f, 0.0625f, 0, -1, 0});
    
    m.add({x + 1 + ERROR, y - ERROR, z - ERROR, 0.1875f, 0.0f, 0, -1, 0});
    m.add({x + 1 + ERROR, y - ERROR, z + 1 + ERROR, 0.1875f, 0.0625f, 0, -1, 0});
    m.add({x - ERROR, y - ERROR, z + 1 + ERROR, 0.125f, 0.0625f, 0, -1, 0});
    
    // top
    m.add({x - ERROR, y + 1 + ERROR, z - ERROR, 0.25f, 0.0f, 0, 1, 0});
    m.add({x - ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.25f, 0.0625f, 0, 1, 0});
    m.add({x + 1 + ERROR, y + 1 + ERROR, z - ERROR, 0.3125f, 0.0f, 0, 1, 0});
    
    m.add({x + 1 + ERROR, y + 1 + ERROR, z - ERROR, 0.3125f, 0.0f, 0, 1, 0});
    m.add({x - ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.25f, 0.0625f, 0, 1, 0});
    m.add({x + 1 + ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.3125f, 0.0625f, 0, 1, 0});
    
    // left
    m.add({x - ERROR, y - ERROR, z - ERROR, 0.1875f, 0.0625f, -1, 0, 0});
    m.add({x - ERROR, y - ERROR, z + 1 + ERROR, 0.25f, 0.0625f, -1, 0, 0});
    m.add({x - ERROR, y + 1 + ERROR, z - ERROR, 0.1875f, 0.0f, -1, 0, 0});
    
    m.add({x - ERROR, y - ERROR, z + 1 + ERROR, 0.25f, 0.0625f, -1, 0, 0});
    m.add({x - ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.25f, 0.0f, -1, 0, 0});
    m.add({x - ERROR, y + 1 + ERROR, z - ERROR, 0.1875f, 0.0f, -1, 0, 0});
    
    // right
    m.add({x + 1 + ERROR, y - ERROR, z - ERROR, 0.25f, 0.0625f, 1, 0, 0});
    m.add({x + 1 + ERROR, y + 1 + ERROR, z - ERROR, 0.25f, 0.0f, 1, 0, 0});
    m.add({x + 1 + ERROR, y - ERROR, z + 1 + ERROR, 0.1875f, 0.0625f, 1, 0, 0});
    
    m.add({x + 1 + ERROR, y - ERROR, z + 1 + ERROR, 0.1875f, 0.0625f, 1, 0, 0});
    m.add({x + 1 + ERROR, y + 1 + ERROR, z - ERROR, 0.25f, 0.0f, 1, 0, 0});
    m.add({x + 1 + ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.1875f, 0.0f, 1, 0, 0});
    
    // front
    m.add({x - ERROR, y - ERROR, z + 1 + ERROR, 0.1875f, 0.0625f, 0, 0, 1});
    m.add({x + 1 + ERROR, y - ERROR, z + 1 + ERROR, 0.25f, 0.0625f, 0, 0, 1});
    m.add({x - ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.1875f, 0.0f, 0, 0, 1});
    
    m.add({x + 1 + ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.25f, 0.0f, 0, 0, 1});
    m.add({x - ERROR, y + 1 + ERROR, z + 1 + ERROR, 0.1875f, 0.0f, 0, 0, 1});
    m.add({x + 1 + ERROR, y - ERROR, z + 1 + ERROR, 0.25f, 0.0625f, 0, 0, 1});
    
    // back
    m.add({x - ERROR, y - ERROR, z - ERROR, 0.25f, 0.0625f, 0, 0, -1});
    m.add({x - ERROR, y + 1 + ERROR, z - ERROR, 0.25f, 0.0f, 0, 0, -1});
    m.add({x + 1 + ERROR, y - ERROR, z - ERROR, 0.1875f, 0.0625f, 0, 0, -1});
    
    m.add({x + 1 + ERROR, y + 1 + ERROR, z - ERROR, 0.1875f, 0.0f, 0, 0, -1});
    m.add({x + 1 + ERROR, y - ERROR, z - ERROR, 0.1875f, 0.0625f, 0, 0, -1}); 
    m.add({x - ERROR, y + 1 + ERROR, z - ERROR, 0.25f, 0.0f, 0, 0, -1});
}

void Game::tick(const Keys& keys, const MouseButtons& mButtons, Camera& cam)
{
    (void) mButtons;
    
    const float speed = 0.5f;
    if(keys.down.isDown())
    {
        pos.addMul(cam.getFlatBack(), speed);
    }
    if(keys.up.isDown())
    {
        pos.addMul(cam.getFlatFront(), speed);
    }
    if(keys.left.isDown())
    {
        pos.addMul(cam.getFlatLeft(), speed);
    }
    if(keys.right.isDown())
    {
        pos.addMul(cam.getFlatRight(), speed);
    }
    if(keys.jump.isDown())
    {
        pos.addMul(cam.getFlatUp(), speed);
    }
    if(keys.sneak.isDown())
    {
        pos.addMul(cam.getFlatDown(), speed);
    }
    
    const float rotation = 5.0f;
    if(keys.camLeft.isDown())
    {
        lengthAngle += rotation;
    }
    if(keys.camRight.isDown())
    {
        lengthAngle -= rotation;
    }
    if(keys.camUp.isDown() && widthAngle - rotation > -90.0f)
    {
        widthAngle -= rotation;
    }
    if(keys.camDown.isDown() && widthAngle + rotation < 90.0f)
    {
        widthAngle += rotation;
    }
    
    cam.storePosition();
    cam.setPosition(pos, lengthAngle, widthAngle);
}

void Game::renderWorld(float lag, MatrixStack& stack, Shader& sh)
{
    (void) lag;
    (void) stack;
    (void) sh;
    texture.bind(0);
    m.draw();
}

void Game::renderTextOverlay(float lag, MatrixStack& stack, Shader& sh, FontRenderer& fr)
{
    (void) lag;
    stack.get().scale(2.0f, 2.0f, 2.0f);
    sh.setMatrix("model", stack.get().getValues());
    fr.drawString(0, 0, "Das ist ein Test");
}