From b668abb3a0671c1233bb30d038a5a53018aa8620 Mon Sep 17 00:00:00 2001
From: JAROWMR <jarorutjes07@gmail.com>
Date: Sun, 10 Nov 2024 15:25:13 +0100
Subject: added unit test for particles

---
 src/test/CMakeLists.txt   |  3 +-
 src/test/ParticleTest.cpp | 86 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+), 1 deletion(-)
 create mode 100644 src/test/ParticleTest.cpp

(limited to 'src/test')

diff --git a/src/test/CMakeLists.txt b/src/test/CMakeLists.txt
index 0e4eaed..acab388 100644
--- a/src/test/CMakeLists.txt
+++ b/src/test/CMakeLists.txt
@@ -1,6 +1,7 @@
 target_sources(test_main PUBLIC
 	dummy.cpp
 	# audio.cpp
-	PhysicsTest.cpp
+	# PhysicsTest.cpp
+	ParticleTest.cpp
 )
 
diff --git a/src/test/ParticleTest.cpp b/src/test/ParticleTest.cpp
new file mode 100644
index 0000000..aa63ccf
--- /dev/null
+++ b/src/test/ParticleTest.cpp
@@ -0,0 +1,86 @@
+#include <math.h>
+#include <crepe/ComponentManager.h>
+#include <crepe/api/Config.h>
+#include <crepe/api/GameObject.h>
+#include <crepe/api/Rigidbody.h>
+#include <crepe/api/Transform.h>
+#include <crepe/system/ParticleSystem.h>
+#include <gtest/gtest.h>
+
+
+using namespace std;
+using namespace std::chrono_literals;
+using namespace crepe;
+
+class ParticlesTest : public ::testing::Test {
+protected:
+	GameObject * game_object;
+	ParticleSystem particle_system;
+	void SetUp() override {
+		ComponentManager & mgr = ComponentManager::get_instance();
+		std::vector<std::reference_wrapper<Transform>> transforms
+			= mgr.get_components_by_id<Transform>(0);
+		if (transforms.empty()) {
+			game_object = new GameObject(0, "", "", Vector2{0, 0}, 0, 0);
+			game_object->add_component<ParticleEmitter>(ParticleEmitter::Data{
+				.position = {0,0},
+				.max_particles = 1,
+				.emission_rate = 0,
+				.min_speed = 0,
+				.max_speed = 0,
+				.min_angle = 0,
+				.max_angle = 0,
+				.begin_lifespan = 0,
+				.end_lifespan = 0,
+				.force_over_time = Vector2{0,0},
+				.boundary{
+					.width = 0,
+					.height = 0,
+					.offset = Vector2{0,0},
+					.reset_on_exit = false,
+				},
+				.sprite = nullptr,
+			});
+		}
+		transforms = mgr.get_components_by_id<Transform>(0);
+		Transform & transform = transforms.front().get();
+		transform.position.x = 0.0;
+		transform.position.y = 0.0;
+		transform.rotation = 0.0;
+		std::vector<std::reference_wrapper<Rigidbody>> rigidbodies
+			= mgr.get_components_by_id<Rigidbody>(0);
+		Rigidbody & rigidbody = rigidbodies.front().get();
+		rigidbody.data.angular_velocity = 0;
+		rigidbody.data.linear_velocity.x = 0;
+		rigidbody.data.linear_velocity.y = 0;
+	}
+};
+
+TEST_F(ParticlesTest, spawnParticle) {
+	Config::get_instance().physics.gravity = 1;
+	ComponentManager & mgr = ComponentManager::get_instance();
+	ParticleEmitter & emitter = mgr.get_components_by_id<ParticleEmitter>(0).front().get();
+	emitter.data.end_lifespan = 5;
+	emitter.data.boundary.height = 100;
+	emitter.data.boundary.width = 100;
+	emitter.data.max_speed = 1;
+	emitter.data.max_angle = 1;
+	particle_system.update(); 
+	//check if nothing happend
+	EXPECT_EQ(emitter.data.particles.size(), 0);
+	emitter.data.emission_rate = 1;
+	particle_system.update();
+	//check if particle spawned
+	EXPECT_EQ(emitter.data.particles.size(), 1);
+	for (auto& particle : emitter.data.particles) {
+        // Check velocity range
+        EXPECT_GE(particle.velocity.x, emitter.data.min_speed);  // Speed should be greater than or equal to min_speed
+        EXPECT_LE(particle.velocity.x, emitter.data.max_speed);  // Speed should be less than or equal to max_speed
+		EXPECT_GE(particle.velocity.y, emitter.data.min_speed);  // Speed should be greater than or equal to min_speed
+        EXPECT_LE(particle.velocity.y, emitter.data.max_speed);  // Speed should be less than or equal to max_speed
+
+        // Check angle range
+        EXPECT_GE(particle.angle, emitter.data.min_angle);  // Angle should be greater than or equal to min_angle
+        EXPECT_LE(particle.angle, emitter.data.max_angle);  // Angle should be less than or equal to max_angle
+    }
+}
-- 
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