Merge branch 'jaro/particle-system-master' into niels/RenderingParticle

1 files changed, 206 insertions, 0 deletions

diff --git a/src/test/ParticleTest.cpp b/src/test/ParticleTest.cpp
new file mode 100644
index 0000000..6fe3133
--- /dev/null
+++ b/src/test/ParticleTest.cpp
@@ -0,0 +1,206 @@
+#include "api/Vector2.h"
+#include <crepe/ComponentManager.h>
+#include <crepe/Particle.h>
+#include <crepe/api/Config.h>
+#include <crepe/api/GameObject.h>
+#include <crepe/api/ParticleEmitter.h>
+#include <crepe/api/Rigidbody.h>
+#include <crepe/api/Sprite.h>
+#include <crepe/api/Transform.h>
+#include <crepe/system/ParticleSystem.h>
+#include <gtest/gtest.h>
+#include <math.h>
+
+using namespace std;
+using namespace std::chrono_literals;
+using namespace crepe;
+
+class ParticlesTest : public ::testing::Test {
+protected:
+	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()) {
+
+			GameObject game_object(0, "", "", Vector2{0, 0}, 0, 0);
+
+			Color color(0, 0, 0, 0);
+			Sprite test_sprite = game_object.add_component<Sprite>(
+				make_shared<Texture>("../asset/texture/img.png"), color,
+				FlipSettings{true, true});
+
+			game_object.add_component<ParticleEmitter>(ParticleEmitter::Data{
+				.position = {0, 0},
+				.max_particles = 100,
+				.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 = test_sprite,
+			});
+		}
+		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<ParticleEmitter>> rigidbodies
+			= mgr.get_components_by_id<ParticleEmitter>(0);
+		ParticleEmitter & emitter = rigidbodies.front().get();
+		emitter.data.position = {0, 0};
+		emitter.data.emission_rate = 0;
+		emitter.data.min_speed = 0;
+		emitter.data.max_speed = 0;
+		emitter.data.min_angle = 0;
+		emitter.data.max_angle = 0;
+		emitter.data.begin_lifespan = 0;
+		emitter.data.end_lifespan = 0;
+		emitter.data.force_over_time = Vector2{0, 0};
+		emitter.data.boundary = {0, 0, Vector2{0, 0}, false};
+		for (auto & particle : emitter.data.particles) {
+			particle.active = false;
+		}
+	}
+};
+
+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 = 0.1;
+	emitter.data.max_angle = 0.1;
+	emitter.data.max_speed = 10;
+	emitter.data.max_angle = 10;
+	particle_system.update();
+	//check if nothing happend
+	EXPECT_EQ(emitter.data.particles[0].active, false);
+	emitter.data.emission_rate = 1;
+	//check particle spawnes
+	particle_system.update();
+	EXPECT_EQ(emitter.data.particles[0].active, true);
+	particle_system.update();
+	EXPECT_EQ(emitter.data.particles[1].active, true);
+	particle_system.update();
+	EXPECT_EQ(emitter.data.particles[2].active, true);
+	particle_system.update();
+	EXPECT_EQ(emitter.data.particles[3].active, true);
+
+	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
+	}
+}
+
+TEST_F(ParticlesTest, moveParticleHorizontal) {
+	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 = 100;
+	emitter.data.boundary.height = 100;
+	emitter.data.boundary.width = 100;
+	emitter.data.min_speed = 1;
+	emitter.data.max_speed = 1;
+	emitter.data.max_angle = 0;
+	emitter.data.emission_rate = 1;
+	for (int a = 1; a < emitter.data.boundary.width / 2; a++) {
+		particle_system.update();
+		EXPECT_EQ(emitter.data.particles[0].position.x, a);
+	}
+}
+
+TEST_F(ParticlesTest, moveParticleVertical) {
+	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 = 100;
+	emitter.data.boundary.height = 100;
+	emitter.data.boundary.width = 100;
+	emitter.data.min_speed = 1;
+	emitter.data.max_speed = 1;
+	emitter.data.min_angle = 90;
+	emitter.data.max_angle = 90;
+	emitter.data.emission_rate = 1;
+	for (int a = 1; a < emitter.data.boundary.width / 2; a++) {
+		particle_system.update();
+		EXPECT_EQ(emitter.data.particles[0].position.y, a);
+	}
+}
+
+TEST_F(ParticlesTest, boundaryParticleReset) {
+	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 = 100;
+	emitter.data.boundary.height = 10;
+	emitter.data.boundary.width = 10;
+	emitter.data.boundary.reset_on_exit = true;
+	emitter.data.min_speed = 1;
+	emitter.data.max_speed = 1;
+	emitter.data.min_angle = 90;
+	emitter.data.max_angle = 90;
+	emitter.data.emission_rate = 1;
+	for (int a = 0; a < emitter.data.boundary.width / 2 + 1; a++) {
+		particle_system.update();
+	}
+	EXPECT_EQ(emitter.data.particles[0].active, false);
+}
+
+TEST_F(ParticlesTest, boundaryParticleStop) {
+	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 = 100;
+	emitter.data.boundary.height = 10;
+	emitter.data.boundary.width = 10;
+	emitter.data.boundary.reset_on_exit = false;
+	emitter.data.min_speed = 1;
+	emitter.data.max_speed = 1;
+	emitter.data.min_angle = 90;
+	emitter.data.max_angle = 90;
+	emitter.data.emission_rate = 1;
+	for (int a = 0; a < emitter.data.boundary.width / 2 + 1; a++) {
+		particle_system.update();
+	}
+	const double TOLERANCE = 0.01;
+	EXPECT_NEAR(emitter.data.particles[0].velocity.x, 0, TOLERANCE);
+	EXPECT_NEAR(emitter.data.particles[0].velocity.y, 0, TOLERANCE);
+	if (emitter.data.particles[0].velocity.x != 0)
+		EXPECT_NEAR(std::abs(emitter.data.particles[0].position.x),
+					emitter.data.boundary.height / 2, TOLERANCE);
+	if (emitter.data.particles[0].velocity.y != 0)
+		EXPECT_NEAR(std::abs(emitter.data.particles[0].position.y),
+					emitter.data.boundary.width / 2, TOLERANCE);
+}