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first draft collision handler get any

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Benedikt Galbavy 2024-01-31 02:32:21 +01:00
parent 11a206fe0a
commit b2a001e24d
3 changed files with 83 additions and 2835 deletions
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22
include/CollisionHandler.h
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@ -55,6 +55,28 @@ public:
std::initializer_list<TeamLabel> const& teamLabels = {}, std::initializer_list<TeamLabel> const& teamLabels = {},
bool negateTeam = false); bool negateTeam = false);
/*!
*
* \brief Tests entity against all entities with the specified labels for a collision
* \details Tests the given entity against every other entity with the specified labels for intersections between their collison boxes.
* If the primary entity has no ColliderComponent, the equivalent of no collision is returned immediately, other entities are skipped
* if they don't have a ColliderComponent
* \param entity The primary entity to check against. Return values will be relative to this entity
* \param posMod Modifier to apply toposition before checking collisions. Example: (TODO: link player collision)
* \param groupLabels Entities need to have at least one listed GroupLabels to get checked against
* \param teamLabels Entities need to have one of the specified TeamLabels to get checked against
* \param negateTeam If set to true, entities will only be checked against if they **don't** have one of the specified TeamLabels
* \return `bool` true if any collision was found, otherwise false
* \return `Entity*` returns first entity with collision found
* \return `IntersectionBitSet` bitset of intersection, position `Direction` true if any part in direction collides
* \see GroupLabel
* \see TeamLabel
* \see Entity
* \see ColliderComponent
* \see IntersectionBitSet
* \see Direction
* \see Entity::getTeam()
*/
template<typename T> template<typename T>
T getAnyIntersection( T getAnyIntersection(
Entity* entity, Entity* entity,

20
src/CollisionHandler.cpp
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@ -123,6 +123,7 @@ IntersectionBitSet CollisionHandler::getAnyIntersection<IntersectionBitSet>(
std::initializer_list<TeamLabel> const& teamLabels, std::initializer_list<TeamLabel> const& teamLabels,
bool negateTeam) bool negateTeam)
{ {
if (!entity->hasComponent<ColliderComponent>()) return std::bitset<DIRECTION_C>();
IntersectionBitSet intersections; IntersectionBitSet intersections;
for (auto& collider : getColliders(groupLabels, teamLabels)) { for (auto& collider : getColliders(groupLabels, teamLabels)) {
intersections |= getIntersection(entity, collider->entity, posMod); intersections |= getIntersection(entity, collider->entity, posMod);
@ -138,6 +139,7 @@ Entity* CollisionHandler::getAnyIntersection<Entity*>(
std::initializer_list<TeamLabel> const& teamLabels, std::initializer_list<TeamLabel> const& teamLabels,
bool negateTeam) bool negateTeam)
{ {
if (!entity->hasComponent<ColliderComponent>()) return nullptr;
for (auto& collider : getColliders(groupLabels, teamLabels)) { for (auto& collider : getColliders(groupLabels, teamLabels)) {
SDL_Rect rect = entity->getComponent<ColliderComponent>().collider + posMod; SDL_Rect rect = entity->getComponent<ColliderComponent>().collider + posMod;
if (SDL_HasIntersection(&rect, &collider->collider)) { if (SDL_HasIntersection(&rect, &collider->collider)) {
@ -146,3 +148,21 @@ Entity* CollisionHandler::getAnyIntersection<Entity*>(
} }
return nullptr; return nullptr;
}; };
template<>
bool CollisionHandler::getAnyIntersection<bool>(
Entity* entity,
Vector2D posMod,
std::initializer_list<GroupLabel> const& groupLabels,
std::initializer_list<TeamLabel> const& teamLabels,
bool negateTeam)
{
if (!entity->hasComponent<ColliderComponent>()) return false;
for (auto& collider : getColliders(groupLabels, teamLabels)) {
SDL_Rect rect = entity->getComponent<ColliderComponent>().collider + posMod;
if (SDL_HasIntersection(&rect, &collider->collider)) {
return true;
}
}
return false;
};