Merge pull request #86 from lonkaars/niels/UI

Text rendering

2 files changed, 43 insertions, 52 deletions

diff --git a/src/crepe/system/RenderSystem.cpp b/src/crepe/system/RenderSystem.cpp
index 57d180f..e8339c3 100644
--- a/src/crepe/system/RenderSystem.cpp
+++ b/src/crepe/system/RenderSystem.cpp
@@ -16,6 +16,8 @@
 #include "../facade/Texture.h"
 #include "../manager/ComponentManager.h"
 #include "../manager/ResourceManager.h"
+#include "api/Text.h"
+#include "facade/Font.h"
 
 #include "RenderSystem.h"
 #include "types.h"
@@ -70,12 +72,34 @@ RefVector<Sprite> RenderSystem::sort(RefVector<Sprite> & objs) const {
 void RenderSystem::update() {
 	this->clear_screen();
 	this->render();
+	this->render_text();
 	this->present_screen();
 }
 
-bool RenderSystem::render_particle(const Sprite & sprite, const float & transform_angle,
-								   const float & scale) {
+void RenderSystem::render_text() {
+	SDLContext & ctx = this->mediator.sdl_context;
+	ComponentManager & mgr = this->mediator.component_manager;
+	ResourceManager & resource_manager = this->mediator.resource_manager;
 
+	RefVector<Text> texts = mgr.get_components_by_type<Text>();
+
+	for (Text & text : texts) {
+		if (!text.active) continue;
+		if (!text.font.has_value())
+			text.font.emplace(ctx.get_font_from_name(text.font_family));
+
+		const Font & font = resource_manager.get<Font>(text.font.value());
+		const auto & transform
+			= mgr.get_components_by_id<Transform>(text.game_object_id).front().get();
+		ctx.draw_text(SDLContext::RenderText{
+			.text = text,
+			.font = font,
+			.transform = transform,
+		});
+	}
+}
+
+bool RenderSystem::render_particle(const Sprite & sprite, const Transform & transform) {
 	ComponentManager & mgr = this->mediator.component_manager;
 	SDLContext & ctx = this->mediator.sdl_context;
 	ResourceManager & resource_manager = this->mediator.resource_manager;
@@ -99,14 +123,14 @@ bool RenderSystem::render_particle(const Sprite & sprite, const float & transfor
 				.sprite = sprite,
 				.texture = res,
 				.pos = p.position,
-				.angle = p.angle + transform_angle,
-				.scale = scale,
+				.angle = p.angle + transform.rotation,
+				.scale = transform.scale,
 			});
 		}
 	}
 	return rendering_particles;
 }
-void RenderSystem::render_normal(const Sprite & sprite, const Transform & tm) {
+void RenderSystem::render_normal(const Sprite & sprite, const Transform & transform) {
 	SDLContext & ctx = this->mediator.sdl_context;
 	ResourceManager & resource_manager = this->mediator.resource_manager;
 	const Texture & res = resource_manager.get<Texture>(sprite.source);
@@ -114,9 +138,9 @@ void RenderSystem::render_normal(const Sprite & sprite, const Transform & tm) {
 	ctx.draw(SDLContext::RenderContext{
 		.sprite = sprite,
 		.texture = res,
-		.pos = tm.position,
-		.angle = tm.rotation,
-		.scale = tm.scale,
+		.pos = transform.position,
+		.angle = transform.rotation,
+		.scale = transform.scale,
 	});
 }
 
@@ -128,36 +152,16 @@ void RenderSystem::render() {
 	ResourceManager & resource_manager = this->mediator.resource_manager;
 	RefVector<Sprite> sorted_sprites = this->sort(sprites);
 	RefVector<Text> text_components = mgr.get_components_by_type<Text>();
-	for (Text & text : text_components) {
-		const Transform & transform
-			= mgr.get_components_by_id<Transform>(text.game_object_id).front().get();
-		this->render_text(text, transform);
-	}
+
 	for (const Sprite & sprite : sorted_sprites) {
 		if (!sprite.active) continue;
 		const Transform & transform
 			= mgr.get_components_by_id<Transform>(sprite.game_object_id).front().get();
 
-		bool rendered_particles
-			= this->render_particle(sprite, transform.rotation, transform.scale);
+		bool rendered_particles = this->render_particle(sprite, transform);
 
 		if (rendered_particles) continue;
 
 		this->render_normal(sprite, transform);
 	}
 }
-void RenderSystem::render_text(Text & text, const Transform & tm) {
-	SDLContext & ctx = this->mediator.sdl_context;
-
-	if (!text.font.has_value()) {
-		text.font.emplace(ctx.get_font_from_name(text.font_family));
-	}
-
-	ResourceManager & resource_manager = this->mediator.resource_manager;
-
-	if (!text.font.has_value()) {
-		return;
-	}
-	const Asset & font_asset = text.font.value();
-	const Font & res = resource_manager.get<Font>(font_asset);
-}
diff --git a/src/crepe/system/RenderSystem.h b/src/crepe/system/RenderSystem.h
index 76df0e0..14e5c2d 100644
--- a/src/crepe/system/RenderSystem.h
+++ b/src/crepe/system/RenderSystem.h
@@ -36,35 +36,28 @@ private:
 	//! Updates the active camera used for rendering.
 	void update_camera();
 
-	//! Renders the whole screen
+	//! Renders all the sprites and particles
 	void render();
 
+	//! Renders all Text components
+	void render_text();
+
+private:
 	/**
 	 * \brief Renders all the particles on the screen from a given sprite.
 	 *
 	 * \param sprite renders the particles with given texture
-	 * \param tm the Transform component for scale. This is not a const reference because each
-	 *  particle has a position and rotation that needs to overwrite the transform position and
-	 *  rotation without overwriting the current transform. and because the transform
-	 *  constructor is now protected i cannot make tmp inside
+	 * \param transform the component that holds the position, rotation, and scale.
 	 * \return true if particles have been rendered
 	 */
-	bool render_particle(const Sprite & sprite, const float & transform_angle,
-						 const float & scale);
-	/**
-	 * \brief Renders all Text components
-	 *
-	 * \param text The text component to be rendered.
-	 * \param tm the Transform component that holds the position,rotation and scale
-	 */
-	void render_text(Text & text, const Transform & tm);
+	bool render_particle(const Sprite & sprite, const Transform & transform);
 	/**
 	 * \brief renders a sprite with a Transform component on the screen
 	 *
 	 * \param sprite  the sprite component that holds all the data
-	 * \param tm the Transform component that holds the position,rotation and scale
+	 * \param transform the Transform component that holds the position,rotation and scale
 	 */
-	void render_normal(const Sprite & sprite, const Transform & tm);
+	void render_normal(const Sprite & sprite, const Transform & transform);
 
 	/**
 	 * \brief sort a vector sprite objects with
@@ -73,12 +66,6 @@ private:
 	 * \return returns a sorted reference vector
 	 */
 	RefVector<Sprite> sort(RefVector<Sprite> & objs) const;
-
-	/**
-	 * \todo Add text rendering using SDL_ttf for text components.
-	 * \todo Implement a text component and a button component.
-	 * \todo Consider adding text input functionality.
-	 */
 };
 
 } // namespace crepe