From d3e8495212f9008f0c2650fb5ee628b464ca5ac0 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Mon, 12 Feb 2018 00:13:39 +0100
Subject: Handle WindowResize event and add zoom

---
 src/main/cpp/WorldScene.cpp | 37 ++++++++++++++++++++++++++++++++-----
 1 file changed, 32 insertions(+), 5 deletions(-)

(limited to 'src/main/cpp/WorldScene.cpp')

diff --git a/src/main/cpp/WorldScene.cpp b/src/main/cpp/WorldScene.cpp
index ab1c4d0..973c6e6 100644
--- a/src/main/cpp/WorldScene.cpp
+++ b/src/main/cpp/WorldScene.cpp
@@ -1,11 +1,11 @@
 #include "WorldScene.hpp"
 
-WorldScene::WorldScene()
+WorldScene::WorldScene(sf::RenderWindow &window) : Scene(window)
 {
     _tileSize = DEFAULT_TILE_SIZE_PX;
 }
 
-void WorldScene::render(sf::RenderWindow &window)
+void WorldScene::render()
 {
     sf::RectangleShape rect;
 
@@ -17,12 +17,39 @@ void WorldScene::render(sf::RenderWindow &window)
 
     for (const Tile &tile : map.tiles()) {
         rect.setPosition(tile.x * _tileSize, tile.y * _tileSize);
-        window.draw(rect);
+        _window.draw(rect);
     }
 }
 
-void WorldScene::zoom(int value)
-{}
+void WorldScene::resize(const sf::Event::SizeEvent &size)
+{
+    auto oldView = _window.getView();
+    sf::View resizedView(oldView.getCenter(), sf::Vector2f(size.width, size.height));
+
+    _window.setView(resizedView);
+}
+
+void WorldScene::zoom(float factor)
+{
+    _zoom += factor;
+
+    if (_zoom < MIN_ZOOM) {
+        _zoom = MIN_ZOOM;
+    }
+
+    if (_zoom > MAX_ZOOM) {
+        _zoom = MAX_ZOOM;
+    }
+
+    sf::View view = _window.getView();
+
+    view.setSize(
+        _window.getSize().x * 1 / _zoom,
+        _window.getSize().y * 1 / _zoom
+    );
+
+    _window.setView(view);
+}
 
 void WorldScene::pan(int dx, int dy)
 {}
-- 
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