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#include "api/Asset.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/manager/ComponentManager.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 {
Mediator m;
public:
ComponentManager component_manager{m};
ParticleSystem particle_system{m};
void SetUp() override {
ComponentManager & mgr = this->component_manager;
std::vector<std::reference_wrapper<Transform>> transforms
= mgr.get_components_by_id<Transform>(0);
if (transforms.empty()) {
GameObject game_object = mgr.new_object("", "", vec2{0, 0}, 0, 0);
Color color(0, 0, 0, 0);
auto s1 = Asset("asset/texture/img.png");
Sprite & test_sprite = game_object.add_component<Sprite>(
s1, Sprite::Data{
.color = color,
.flip = Sprite::FlipSettings{true, true},
.size = {10, 10},
});
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 = vec2{0, 0},
.boundary{
.width = 0,
.height = 0,
.offset = vec2{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 = vec2{0, 0};
emitter.data.boundary = {0, 0, vec2{0, 0}, false};
for (auto & particle : emitter.data.particles) {
particle.active = false;
}
}
};
TEST_F(ParticlesTest, spawnParticle) {
Config::get_instance().physics.gravity = 1;
ComponentManager & mgr = this->component_manager;
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 = this->component_manager;
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 = this->component_manager;
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 = this->component_manager;
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 = this->component_manager;
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);
}
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