renamed particel to particle and example uses ecs for poc

1 files changed, 97 insertions, 0 deletions

diff --git a/src/example/particle.cpp b/src/example/particle.cpp
new file mode 100644
index 0000000..fc56230
--- /dev/null
+++ b/src/example/particle.cpp
@@ -0,0 +1,97 @@
+#include <iostream>
+#include <thread>
+#include <chrono>
+#include "SDLApp.h"
+#include "ParticleEmitter.h"
+#include "ParticleSystem.h"
+#include "Particle.h"
+#include <crepe/Component.h>
+#include <crepe/ComponentManager.h>
+#include <crepe/GameObject.h>
+#include <chrono>
+
+using namespace crepe;
+using namespace std;
+
+const int WINDOW_WIDTH = 800;
+const int WINDOW_HEIGHT = 600;
+
+int main(int argc, char* argv[]) {
+    SDLApp app(WINDOW_WIDTH, WINDOW_HEIGHT);
+
+    if (!app.initialize()) {
+        cerr << "Failed to initialize SDLApp." << endl;
+        return 1;
+    }
+
+	auto & mgr = ComponentManager::get_instance();
+	GameObject * game_object[1];
+	game_object[0] = new GameObject(0, "Name", "Tag", 0);
+	
+
+    ParticleSystem particleSystem;
+
+    unsigned int maxParticles = 100;         // maximum number of particles
+    unsigned int emissionRate = 1;          // particles created per second
+    unsigned int speed = 50;                 // base speed of particles
+    unsigned int speedOffset = 10;           // random offset for particle speed
+    unsigned int angle = 90;                 // base angle of particle emission
+    unsigned int angleOffset = 30;           // random offset for particle angle
+    float beginLifespan = 0.0f;             // beginning lifespan of particles
+    float endLifespan = 2.0f;               // ending lifespan of particles
+
+    // Vector to hold all the emitters
+    // vector<ParticleEmitter> emitters;
+	game_object[0]->add_component<ParticleEmitter>(maxParticles, emissionRate, speed, speedOffset, angle, angleOffset, beginLifespan, endLifespan);
+
+	std::vector<std::reference_wrapper<ParticleEmitter>> emitters = mgr.get_components_by_type<ParticleEmitter>();
+	
+
+    // Loop to create 1000 emitters
+    // for (unsigned int i = 0; i < 1000; ++i) {
+    //     ParticleEmitter emitter(maxParticles, emissionRate, speed, speedOffset, angle, angleOffset, beginLifespan, endLifespan);
+        
+    //     // Set a position for each emitter, modifying the position for demonstration
+    //     emitter.m_position = {static_cast<float>(200 + (i % 100)), static_cast<float>(200 + (i / 100) * 10)}; // Adjust position for each emitter
+        
+    //     emitters.push_back(emitter); // Add the emitter to the vector
+    // }
+    float deltaTime = 0.1f;
+    bool running = true;
+    cout << "start loop " << endl;
+    while (running) {
+        app.handleEvents(running);
+
+        // Start timing
+        auto start = chrono::high_resolution_clock::now();
+
+        particleSystem.update(deltaTime, emitters); // update particle system with delta time and emitters
+
+        // End timing
+        auto end = chrono::high_resolution_clock::now();
+        chrono::duration<float, milli> duration = end - start; // get duration in milliseconds
+
+        cout << "Update took " << duration.count() << " ms" << endl;
+        app.clearScreen();
+
+        start = chrono::high_resolution_clock::now();
+        // render particles using the drawSquare method from SDLApp
+        for (const ParticleEmitter& emitter : emitters) {
+            for (const Particle& particle : emitter.particles) {
+                if(particle.active)app.drawSquare(particle.position.x, particle.position.y, 5); // draw each particle
+            }
+        }
+        
+
+        app.presentScreen();
+        end = chrono::high_resolution_clock::now();
+         duration = end - start; // get duration in milliseconds
+
+        cout << "screen took " << duration.count() << " ms" << endl;
+
+        this_thread::sleep_for(chrono::milliseconds(20)); // simulate ~50 FPS
+    }
+
+    app.cleanUp();
+    return 0;
+}