collision_script.cpp

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#include <iostream>
 
#include "collision_script.h"
#include "scenemanager.h"
#include "gameobject.h"
#include "collide.h"
#include "texture.h"
 
CollisionScript::CollisionScript() {
    m_collide = false;
}
 
void CollisionScript::update() {
    auto collide = m_owner->getComponent<Collide>();
    
    auto players = SceneManager::getInstance().getSceneTree()->findGameObjectsByTag("Player");
    if (players.empty()) return;
    auto playerCollide = players[0]->getComponent<Collide>();
 
    m_collide = collide->isColliding(playerCollide);
 
    auto arrows = SceneManager::getInstance().getSceneTree()->findGameObjectsByTag("Arrow");
    for (auto arrow : arrows) {
        auto arrowCollide = arrow->getComponent<Collide>();
        if (arrowCollide == nullptr) continue;
        if (collide->isColliding(arrowCollide)) {
            m_owner->getSceneNode()->setDestroy(true);
            arrow->getSceneNode()->setDestroy(true);
        }
    }
}
 
void CollisionScript::render() {
    auto collide = m_owner->getComponent<Collide>();
    if (collide == nullptr) return;
 
    if (m_collide) {
        // draw a red rectangle around the object this script is attached to equal to its hitbox
        SDL_SetRenderDrawColor(SceneManager::getInstance().getRenderer(), 255, 0, 0, 255);
        SDL_RenderDrawRect(SceneManager::getInstance().getRenderer(), collide->getRect());
    }
}