chapter 2 exercise 5

chapter02/Exercise5/include/Resources.h

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+#pragma once
+#include "cinder/CinderResources.h"
+#include "Resources.h"
+
+//#define RES_MY_RES			CINDER_RESOURCE( ../resources/, image_name.png, 128, IMAGE )

chapter02/Exercise5/src/Exercise5App.cpp

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+#include "cinder/app/AppBasic.h"
+#include "cinder/gl/gl.h"
+#include "cinder/Rand.h"
+#include "Mover.h"
+#include "Liquid.h"
+
+using namespace ci;
+using namespace ci::app;
+using namespace std;
+
+class Exercise5App : public AppBasic {
+  public:
+	void setup();
+	void update();
+	void draw();
+    void prepareSettings(Settings *settings);
+
+    vector<Mover*> mMovers;
+    int mNumMovers;
+
+    Liquid *liquid;
+};
+
+void Exercise5App::prepareSettings(Settings *settings) {
+    settings->setFullScreen();
+}
+
+void Exercise5App::setup()
+{
+    mNumMovers = 20;
+    int i = 0;
+    while (i < mNumMovers) {
+        mMovers.push_back(new Mover(randFloat(1.0, 5.0), randFloat(getWindowWidth()), randFloat(getWindowHeight()/2)));
+        i++;
+    }
+    liquid = new Liquid();
+}
+
+void Exercise5App::update()
+{
+    Vec2f wind = Vec2f(0.05, 0);
+    for (auto mover : mMovers) {
+        if (liquid->contains(mover->mLocation)) {
+            mover->drag(liquid);
+        }
+
+        mover->applyForce(wind);
+
+        float c = 0.01;
+        Vec2f friction = mover->mVelocity;
+        friction *= -1;
+        friction.safeNormalize();
+        friction *= c;
+        mover->applyForce(friction);
+
+        float m = (0.1 * mover->mMass);
+        Vec2f gravity = Vec2f(0, m);
+        mover->applyForce(gravity);
+
+        mover->update();
+        mover->checkEdges();
+    }
+}
+
+void Exercise5App::draw()
+{
+	gl::clear( Color( 1, 1, 1 ) );
+    liquid->draw();
+    for (auto mover : mMovers) {
+        mover->draw();
+    }
+}
+
+CINDER_APP_BASIC( Exercise5App, RendererGl )