Merge branch 'master' of https://github.com/lonkaars/crepe into wouter/button-improvement

10 files changed, 134 insertions, 26 deletions

diff --git a/src/crepe/api/CMakeLists.txt b/src/crepe/api/CMakeLists.txt
index 8f84f06..e8d6f92 100644
--- a/src/crepe/api/CMakeLists.txt
+++ b/src/crepe/api/CMakeLists.txt
@@ -20,6 +20,7 @@ target_sources(crepe PUBLIC
 	Button.cpp
 	UIObject.cpp
 	AI.cpp
+	Text.cpp
 	Scene.cpp
 )
 
@@ -51,4 +52,5 @@ target_sources(crepe PUBLIC FILE_SET HEADERS FILES
 	Button.h
 	UIObject.h
 	AI.h
+	Text.h
 )
diff --git a/src/crepe/api/Config.h b/src/crepe/api/Config.h
index ed1cf38..6b9e3ca 100644
--- a/src/crepe/api/Config.h
+++ b/src/crepe/api/Config.h
@@ -76,6 +76,17 @@ struct Config final {
 		 */
 		std::string root_pattern = ".crepe-root";
 	} asset;
+	//! Default font options
+	struct {
+		/**
+		 * \brief Default font size
+		 *
+		 * Using the SDL_ttf library the font size needs to be set when loading the font. 
+		 * This config option is the font size at which all fonts will be loaded initially.
+		 * 
+		 */
+		unsigned int size = 16;
+	} font;
 	//! Configuration for click tolerance.
 	struct {
 		//! The maximum number of pixels the mouse can move between MouseDown and MouseUp events to be considered a click.
diff --git a/src/crepe/api/LoopManager.cpp b/src/crepe/api/LoopManager.cpp
index b5e5ff7..7a78019 100644
--- a/src/crepe/api/LoopManager.cpp
+++ b/src/crepe/api/LoopManager.cpp
@@ -65,6 +65,7 @@ void LoopManager::fixed_update() {
 	this->get_system<InputSystem>().update();
 	this->event_manager.dispatch_events();
 	this->get_system<ScriptSystem>().update();
+	this->get_system<ParticleSystem>().update();
 	this->get_system<AISystem>().update();
 	this->get_system<PhysicsSystem>().update();
 	this->get_system<CollisionSystem>().update();
diff --git a/src/crepe/api/LoopManager.h b/src/crepe/api/LoopManager.h
index 40e6b38..1d23cbf 100644
--- a/src/crepe/api/LoopManager.h
+++ b/src/crepe/api/LoopManager.h
@@ -72,6 +72,8 @@ private:
 	//! Global context
 	Mediator mediator;
 
+	//! SDLContext instance
+	SDLContext sdl_context{mediator};
 	//! Component manager instance
 	ComponentManager component_manager{mediator};
 	//! Scene manager instance
@@ -84,8 +86,6 @@ private:
 	ResourceManager resource_manager{mediator};
 	//! Save manager instance
 	SaveManager save_manager{mediator};
-	//! SDLContext instance
-	SDLContext sdl_context{mediator};
 
 private:
 	/**
diff --git a/src/crepe/api/ParticleEmitter.cpp b/src/crepe/api/ParticleEmitter.cpp
index 90b77a0..4f54bbd 100644
--- a/src/crepe/api/ParticleEmitter.cpp
+++ b/src/crepe/api/ParticleEmitter.cpp
@@ -1,11 +1,14 @@
 #include "ParticleEmitter.h"
+#include "api/Sprite.h"
 
 using namespace crepe;
 
-ParticleEmitter::ParticleEmitter(game_object_id_t game_object_id, const Data & data)
+ParticleEmitter::ParticleEmitter(game_object_id_t game_object_id, const Sprite & sprite,
+								 const Data & data)
 	: Component(game_object_id),
+	  sprite(sprite),
 	  data(data) {
 	for (size_t i = 0; i < this->data.max_particles; i++) {
-		this->data.particles.emplace_back();
+		this->particles.emplace_back();
 	}
 }
diff --git a/src/crepe/api/ParticleEmitter.h b/src/crepe/api/ParticleEmitter.h
index b83fd61..8ac2e72 100644
--- a/src/crepe/api/ParticleEmitter.h
+++ b/src/crepe/api/ParticleEmitter.h
@@ -1,7 +1,11 @@
 #pragma once
 
+#include <cmath>
 #include <vector>
 
+#include "system/ParticleSystem.h"
+#include "system/RenderSystem.h"
+
 #include "Component.h"
 #include "Particle.h"
 #include "types.h"
@@ -26,15 +30,18 @@ public:
 	 */
 	struct Boundary {
 		//! boundary width (midpoint is emitter location)
-		double width = 0.0;
+		float width = INFINITY;
 		//! boundary height (midpoint is emitter location)
-		double height = 0.0;
+		float height = INFINITY;
 		//! boundary offset from particle emitter location
 		vec2 offset;
 		//! reset on exit or stop velocity and set max postion
 		bool reset_on_exit = false;
 	};
 
+	//! sprite reference of displayed sprite
+	const Sprite & sprite;
+
 	/**
 	 * \brief Holds parameters that control particle emission.
 	 *
@@ -42,32 +49,28 @@ public:
 	 * and the sprite used for rendering particles.
 	 */
 	struct Data {
-		//! position of the emitter
-		vec2 position;
+		//! offset of the emitter relative to transform
+		vec2 offset;
 		//! maximum number of particles
-		const unsigned int max_particles = 0;
-		//! rate of particle emission per update (Lowest value = 0.001 any lower is ignored)
-		double emission_rate = 0;
+		const unsigned int max_particles = 256;
+		//! rate of particle emission per second
+		float emission_rate = 50;
 		//! min speed of the particles
-		double min_speed = 0;
+		float min_speed = 100;
 		//! min speed of the particles
-		double max_speed = 0;
+		float max_speed = 100;
 		//! min angle of particle emission
-		double min_angle = 0;
+		float min_angle = 0;
 		//! max angle of particle emission
-		double max_angle = 0;
-		//! begin Lifespan of particle (only visual)
-		double begin_lifespan = 0.0;
-		//! end Lifespan of particle
-		double end_lifespan = 0.0;
+		float max_angle = 0;
+		//! begin Lifespan of particle in seconds (only visual)
+		float begin_lifespan = 0.0;
+		//! end Lifespan of particle in seconds
+		float end_lifespan = 10.0;
 		//! force over time (physics)
 		vec2 force_over_time;
 		//! particle boundary
 		Boundary boundary;
-		//! collection of particles
-		std::vector<Particle> particles;
-		//! sprite reference
-		const Sprite & sprite;
 	};
 
 public:
@@ -75,11 +78,21 @@ public:
 	 * \param game_object_id  Identifier for the game object using this emitter.
 	 * \param data            Configuration data defining particle properties.
 	 */
-	ParticleEmitter(game_object_id_t game_object_id, const Data & data);
+	ParticleEmitter(game_object_id_t game_object_id, const Sprite & sprite, const Data & data);
 
 public:
 	//! Configuration data for particle emission settings.
 	Data data;
+
+private:
+	//! Only ParticleSystem can move and read particles
+	friend ParticleSystem;
+	//! Only RenderSystem can read particles
+	friend RenderSystem;
+	//! Saves time left over from last update event.
+	float spawn_accumulator = 0;
+	//! collection of particles
+	std::vector<Particle> particles;
 };
 
 } // namespace crepe
diff --git a/src/crepe/api/Script.cpp b/src/crepe/api/Script.cpp
index d4eaae9..583c04f 100644
--- a/src/crepe/api/Script.cpp
+++ b/src/crepe/api/Script.cpp
@@ -31,7 +31,7 @@ const keyboard_state_t & Script::get_keyboard_state() const {
 	return sdl_context.get_keyboard_state();
 }
 
-bool Script::get_key_state(Keycode key) const {
+bool Script::get_key_state(Keycode key) const noexcept {
 	try {
 		return this->get_keyboard_state().at(key);
 	} catch (...) {
diff --git a/src/crepe/api/Script.h b/src/crepe/api/Script.h
index b5d3dd2..65306cd 100644
--- a/src/crepe/api/Script.h
+++ b/src/crepe/api/Script.h
@@ -150,7 +150,7 @@ protected:
 	 * \return Keycode state (true if pressed, false if not pressed).
 	 * 
 	 */
-	bool get_key_state(Keycode key) const;
+	bool get_key_state(Keycode key) const noexcept;
 	//! \}
 
 private:
diff --git a/src/crepe/api/Text.cpp b/src/crepe/api/Text.cpp
new file mode 100644
index 0000000..54a4370
--- /dev/null
+++ b/src/crepe/api/Text.cpp
@@ -0,0 +1,12 @@
+#include "../facade/FontFacade.h"
+
+#include "Text.h"
+
+using namespace crepe;
+
+Text::Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset,
+		   const std::string & font_family, const Data & data, const std::string & text)
+	: UIObject(id, dimensions, offset),
+	  text(text),
+	  data(data),
+	  font_family(font_family) {}
diff --git a/src/crepe/api/Text.h b/src/crepe/api/Text.h
new file mode 100644
index 0000000..c30dc80
--- /dev/null
+++ b/src/crepe/api/Text.h
@@ -0,0 +1,66 @@
+#pragma once
+
+#include <optional>
+#include <string>
+
+#include "../Component.h"
+
+#include "Asset.h"
+#include "Color.h"
+#include "UIObject.h"
+
+namespace crepe {
+/**
+ * \brief Text UIObject component for displaying text
+ * 
+ * This class can be used to display text on screen. By setting the font_family to a font already stored on the current device it will automatically be loaded in.
+ */
+class Text : public UIObject {
+public:
+	//! Text data that does not have to be set in the constructor
+	struct Data {
+		/**
+		 *  \brief fontsize for text rendering
+		 * 
+		 * \note this is not the actual font size that is loaded in.
+		 * 
+		 * Since SDL_TTF requires the font size when loading in the font it is not possible to switch the font size.
+		 * The default font size that is loaded is set in the Config.
+		 * Instead this value is used to upscale the font texture which can cause blurring or distorted text when upscaling or downscaling too much.
+		 */
+		unsigned int font_size = 16;
+
+		//! Layer sorting level of the text
+		const int sorting_in_layer = 0;
+
+		//! Order within the sorting text
+		const int order_in_layer = 0;
+
+		//! Label text color.
+		Color text_color = Color::BLACK;
+	};
+
+public:
+	/**
+	 * 
+	 * \param dimensions Width and height of the UIObject.
+	 * \param offset Offset of the UIObject relative to its transform
+	 * \param text The text to be displayed.
+	 * \param font_family The font style name to be displayed.
+	 * \param data Data struct containing extra text parameters.
+	 * \param font Optional font asset that can be passed or left empty.
+	 */
+	Text(game_object_id_t id, const vec2 & dimensions, const vec2 & offset,
+		 const std::string & font_family, const Data & data, const std::string & text = "");
+
+	//! Label text.
+	std::string text = "";
+	//! font family name
+	std::string font_family = "";
+	//! Font asset variable if this is not set, it will use the font_family to create an asset.
+	std::optional<Asset> font;
+	//! Data instance
+	Data data;
+};
+
+} // namespace crepe