From 63b2d506ba37350f65e7ae74d2325182012d9f1f Mon Sep 17 00:00:00 2001
From: SeanOMik <seanomik@gmail.com>
Date: Tue, 7 Jul 2020 00:52:03 -0500
Subject: [PATCH] Start work on the HitboxComponent.

---
 examples/animation/src/main.cpp               | 10 ++++-
 .../components/hitbox_component.h             | 33 ++++++++++++++++
 src/components/hitbox_component.cpp           | 39 +++++++++++++++++++
 3 files changed, 80 insertions(+), 2 deletions(-)
 create mode 100644 include/simpleengine/components/hitbox_component.h
 create mode 100644 src/components/hitbox_component.cpp

diff --git a/examples/animation/src/main.cpp b/examples/animation/src/main.cpp
index af6b203..2aaeea8 100644
--- a/examples/animation/src/main.cpp
+++ b/examples/animation/src/main.cpp
@@ -10,6 +10,7 @@
 #include <simpleengine/components/movement/movement_component.h>
 #include <simpleengine/components/ssma_component.h>
 #include <simpleengine/events/entity_event.h>
+#include <simpleengine/components/hitbox_component.h>
 #include <simpleengine/animation.h>
 
 #include <chrono>
@@ -22,7 +23,6 @@ private:
     float movement_speed = 130;
     sf::Vector2u window_size;
 
-    std::unique_ptr<simpleengine::SideScrollerMovementAnimationComponent> move_anim_component;
 public:
     explicit PlayerEntity(sf::Vector2u window_size) : window_size(window_size) {
         texture.loadFromFile("player_sheet.png");
@@ -30,13 +30,17 @@ public:
         sprite.setTexture(texture);
         sprite.setScale(.7, .7);
 
-        move_anim_component = std::make_unique<simpleengine::SideScrollerMovementAnimationComponent>(*this, sprite,
+        auto move_anim_component = std::make_unique<simpleengine::SideScrollerMovementAnimationComponent>(*this, sprite,
                 texture, movement_speed, 5, 1.1);
         move_anim_component->SetAnimation(simpleengine::MovementAnimationType::WALK_LEFT, 8, 0, 8,
                 9, 8, 128, 128);
         move_anim_component->SetAnimation(simpleengine::MovementAnimationType::IDLE_LEFT, 20, 0, 0,
                 6, 0, 128, 128);
         AddComponent(std::move(move_anim_component));
+
+        AddComponent(std::make_unique<simpleengine::HitboxComponent>(*this, sprite,
+                0, 0,
+                sprite.getGlobalBounds().width, sprite.getGlobalBounds().height));
     }
 
     ~PlayerEntity() override {
@@ -62,6 +66,8 @@ public:
     }
 
     void Render(sf::RenderTarget* target) override {
+        Entity::Render(target);
+
         target->draw(sprite);
     }
 };
diff --git a/include/simpleengine/components/hitbox_component.h b/include/simpleengine/components/hitbox_component.h
new file mode 100644
index 0000000..4745c95
--- /dev/null
+++ b/include/simpleengine/components/hitbox_component.h
@@ -0,0 +1,33 @@
+//
+// Created by SeanOMik on 7/6/2020.
+// Github: https://github.com/SeanOMik
+// Email: seanomik@gmail.com
+//
+
+#ifndef SIMPLEENGINE_HITBOX_COMPONENT_H
+#define SIMPLEENGINE_HITBOX_COMPONENT_H
+
+#include "../component.h"
+
+#include <SFML/Graphics.hpp>
+
+namespace simpleengine {
+    class HitboxComponent : public Component {
+    private:
+        sf::Sprite& sprite;
+        sf::RectangleShape hitbox;
+
+        float offset_x;
+        float offset_y;
+    public:
+        HitboxComponent(Entity& owning_entity, sf::Sprite& sprite, float sprite_offset_x, float sprite_offset_y,
+                float width, float height);
+
+        bool DoesIntersect(const sf::FloatRect& rect);
+
+        void Update(const float &delta_time) override;
+        void Render(sf::RenderTarget *target) override;
+    };
+}
+
+#endif //SIMPLEENGINE_HITBOX_COMPONENT_H
diff --git a/src/components/hitbox_component.cpp b/src/components/hitbox_component.cpp
new file mode 100644
index 0000000..d541637
--- /dev/null
+++ b/src/components/hitbox_component.cpp
@@ -0,0 +1,39 @@
+//
+// Created by SeanOMik on 7/6/2020.
+// Github: https://github.com/SeanOMik
+// Email: seanomik@gmail.com
+//
+
+#include "components/hitbox_component.h"
+#include "components/ssma_component.h"
+#include "entity.h"
+
+#include <iostream>
+
+simpleengine::HitboxComponent::HitboxComponent(Entity& owning_entity, sf::Sprite &sprite, float sprite_offset_x, float sprite_offset_y,
+        float width, float height) : Component(owning_entity), sprite(sprite), offset_x(sprite_offset_x), offset_y(sprite_offset_y) {
+
+    hitbox.setPosition(sprite.getPosition().x + sprite_offset_x, sprite.getPosition().y + sprite_offset_y);
+    hitbox.setSize(sf::Vector2f(width, height));
+    hitbox.setFillColor(sf::Color::Transparent);
+    hitbox.setOutlineThickness(1);
+    hitbox.setOutlineColor(sf::Color::Red);
+
+    // SSMA Component set's the sprites texture offset so we need to set
+    // the offset to the origin if the entity has the SSMA component.
+    if (owning_entity.HasComponent<simpleengine::SideScrollerMovementAnimationComponent>()) {
+        offset_x += sprite.getGlobalBounds().width * -0.5f;
+    }
+}
+
+bool simpleengine::HitboxComponent::DoesIntersect(const sf::FloatRect &rect) {
+    return hitbox.getGlobalBounds().intersects(rect);
+}
+
+void simpleengine::HitboxComponent::Update(const float &delta_time) {
+    hitbox.setPosition(sprite.getPosition().x + offset_x, sprite.getPosition().y + offset_y);
+}
+
+void simpleengine::HitboxComponent::Render(sf::RenderTarget *target) {
+    target->draw(hitbox);
+}