BlackMATov/ecs.hpp
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before and after event triggers

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This commit is contained in:
Matvey Cherevko
2019-10-18 19:41:15 +07:00
parent dcb62437ca
commit 7ad769cdfa
2 changed files with 148 additions and 87 deletions
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40
untests/ecs_tests.cpp
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@@ -1536,20 +1536,22 @@ TEST_CASE("registry") {
};
struct physics_evt {
update_evt parent_evt{};
update_evt parent{};
};
class gravity_system : public ecs::system<physics_evt> {
struct clear_velocity_evt {
};
class gravity_system : public ecs::system<ecs::before<physics_evt>> {
public:
gravity_system(int g)
: g_(g) {}
void process(ecs::registry& owner, const physics_evt& evt) override {
owner.for_each_component<
velocity_c
>([this, &evt](ecs::entity, velocity_c& v) {
v.x += g_ * evt.parent_evt.dt;
v.y += g_ * evt.parent_evt.dt;
void process(ecs::registry& owner, const ecs::before<physics_evt>& before) override {
owner.for_each_component<velocity_c>(
[this, &evt = before.event](ecs::entity, velocity_c& v) {
v.x += g_ * evt.parent.dt;
v.y += g_ * evt.parent.dt;
}, !ecs::exists<disabled_c>{});
}
private:
@@ -1559,20 +1561,24 @@ TEST_CASE("registry") {
class movement_system : public ecs::system<physics_evt> {
public:
void process(ecs::registry& owner, const physics_evt& evt) override {
owner.for_joined_components<position_c, velocity_c>([&evt](
ecs::entity, position_c& p, const velocity_c& v)
{
p.x += v.x * evt.parent_evt.dt;
p.y += v.y * evt.parent_evt.dt;
owner.for_joined_components<position_c, velocity_c>(
[&evt](ecs::entity, position_c& p, const velocity_c& v) {
p.x += v.x * evt.parent.dt;
p.y += v.y * evt.parent.dt;
}, !ecs::exists<disabled_c>{});
}
};
class physics_system : public ecs::system<update_evt> {
class physics_system : public ecs::system<update_evt, clear_velocity_evt> {
public:
void process(ecs::registry& owner, const update_evt& evt) override {
owner.process_event(physics_evt{evt});
}
void process(ecs::registry& owner, const clear_velocity_evt& evt) override {
(void)evt;
owner.remove_all_components<velocity_c>();
}
};
ecs::registry w;
@@ -1590,6 +1596,12 @@ TEST_CASE("registry") {
REQUIRE(e.get_component<position_c>().x == 1 + (3 + 9 * 2) * 2);
REQUIRE(e.get_component<position_c>().y == 2 + (4 + 9 * 2) * 2);
REQUIRE(w.component_count<velocity_c>() == 1);
w.process_event(clear_velocity_evt{});
REQUIRE(w.component_count<velocity_c>() == 0);
}
SECTION("fillers") {
struct component_n {