Examples/BreakOut.cpp at master · defGameEngine/Examples · GitHub

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#defineDEF_GEOMETRY2D_IMPL
#include"../defGeometry2D/defGeometry2D.hpp"

#include"../Include/defGameEngine.hpp"

template <classT>
structDynamic
{
	T model;
	def::Vector2f velocity;
};

structBall : Dynamic<def::circle<float>> {};

structTile : Dynamic<def::rect<float>>
{
bool isRedundant = false;
};

classBreakOut : publicdef::GameEngine
{
public:
BreakOut()
	{
Window().SetTitle("Break Out");
	}

private:
	Ball ball;

	std::list<Tile> tiles;
	std::list<Tile>::iterator bat;

protected:
boolOnUserCreate() override
	{
 ball.model.pos = Window().GetScreenSize() / 2;
 ball.velocity = { 0.5f, 0.8f };
 ball.model.radius = 5.0f;

 Tile b;
 b.model.pos = Window().GetScreenSize() * def::Vector2f(0.5f, 0.75f);
 b.model.size = { 20.0f, 5.0f };

 tiles.push_back(b);
 bat = tiles.begin();

 def::Vector2f origin = Window().GetScreenSize() * 0.25f;
 def::Vector2f tileSize = { 20.0f, 10.0f };

 def::Vector2i count = Window().GetScreenSize() * def::Vector2f(0.5f, 0.2f) / tileSize;

// Add tiles
for (int i = 0; i < count.x; i++)
for (int j = 0; j < count.y; j++)
 {
 Tile tile;

 tile.model.pos = origin + (tileSize + 1) * def::Vector2f(i, j);
 tile.model.size = tileSize;

 tiles.push_back(tile);
 }

returntrue;
	}

boolOnUserUpdate(float deltaTime) override
	{
if (Input().GetKeyState(def::Key::LEFT).held) bat->model.pos.x -= 150.0f * deltaTime;
if (Input().GetKeyState(def::Key::RIGHT).held) bat->model.pos.x += 150.0f * deltaTime;

 def::Vector2f potentialPos = ball.model.pos + ball.velocity * deltaTime * 200.0f;

if (potentialPos.x < ball.model.radius)
 ball.velocity.x *= -1.0f;

if (potentialPos.x >= (float)Window().GetScreenWidth() - ball.model.radius)
 ball.velocity.x *= -1.0f;

if (potentialPos.y < ball.model.radius)
 ball.velocity.y *= -1.0f;

if (potentialPos.y >= (float)Window().GetScreenHeight() - ball.model.radius)
 ball.velocity.y *= -1.0f;

for (auto it = tiles.begin(); it != tiles.end(); it++)
 {
uint32_t i = 0;

while (i < def::rect<float>::SIDES)
 {
if (def::intersects(ball.model, it->model.side(i)).size() > 0)
 {
if (it != bat)
 it->isRedundant = true;

break;
 }

 i++;
 }

switch (i)
 {
case def::rect<float>::side::LEFT: ball.velocity.x *= -1.0f; break;
case def::rect<float>::side::TOP: ball.velocity.y *= -1.0f; break;
case def::rect<float>::side::RIGHT: ball.velocity.x *= -1.0f; break;
case def::rect<float>::side::BOTTOM: ball.velocity.y *= -1.0f; break;
 }
 }

 ball.model.pos += ball.velocity * deltaTime * 150.0f;

 tiles.remove_if([](const Tile& t) { return t.isRedundant; });

Clear(def::BLACK);

FillCircle(ball.model.pos, ball.model.radius, def::YELLOW);
FillRectangle(bat->model.pos, bat->model.size, def::BLUE);

for (auto it = std::next(tiles.begin()); it != tiles.end(); it++)
FillRectangle(it->model.pos, it->model.size, def::GREEN);

returntrue;
	}
};

intmain()
{
	BreakOut app;

	app.Construct(512, 480, 2, 2);
	app.Run();

return0;
}