1 files changed, 358 insertions, 96 deletions

diff --git a/src/crepe/facade/SDLContext.cpp b/src/crepe/facade/SDLContext.cpp
index 8da93e9..fffbe34 100644
--- a/src/crepe/facade/SDLContext.cpp
+++ b/src/crepe/facade/SDLContext.cpp
@@ -1,157 +1,419 @@
 #include <SDL2/SDL.h>
+#include <SDL2/SDL_blendmode.h>
 #include <SDL2/SDL_image.h>
+#include <SDL2/SDL_keycode.h>
+#include <SDL2/SDL_pixels.h>
+#include <SDL2/SDL_rect.h>
 #include <SDL2/SDL_render.h>
 #include <SDL2/SDL_surface.h>
+#include <SDL2/SDL_ttf.h>
 #include <SDL2/SDL_video.h>
+#include <array>
 #include <cmath>
 #include <cstddef>
-#include <iostream>
+#include <cstdint>
+#include <functional>
+#include <memory>
+#include <stdexcept>
 
+#include "../api/Camera.h"
+#include "../api/Color.h"
+#include "../api/Config.h"
 #include "../api/Sprite.h"
-#include "../api/Texture.h"
-#include "../api/Transform.h"
-#include "../util/log.h"
+#include "../util/Log.h"
+#include "manager/Mediator.h"
 
 #include "SDLContext.h"
+#include "Texture.h"
+#include "types.h"
 
 using namespace crepe;
+using namespace std;
 
-SDLContext & SDLContext::get_instance() {
-	static SDLContext instance;
-	return instance;
-}
+SDLContext::SDLContext(Mediator & mediator) {
+	dbg_trace();
+	if (TTF_Init() == -1) {
+		throw runtime_error(format("SDL_ttf initialization failed: {}", TTF_GetError()));
+	}
+	if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+		throw runtime_error(format("SDLContext: SDL_Init error: {}", SDL_GetError()));
+	}
 
-void SDLContext::handle_events(bool & running) {
-	SDL_Event event;
-	while (SDL_PollEvent(&event)) {
-		if (event.type == SDL_QUIT) {
-			running = false;
-		}
+	auto & cfg = Config::get_instance().window_settings;
+	SDL_Window * tmp_window
+		= SDL_CreateWindow(cfg.window_title.c_str(), SDL_WINDOWPOS_CENTERED,
+						   SDL_WINDOWPOS_CENTERED, cfg.default_size.x, cfg.default_size.y, 0);
+	if (!tmp_window) {
+		throw runtime_error(format("SDLContext: SDL_Window error: {}", SDL_GetError()));
+	}
+	this->game_window = {tmp_window, [](SDL_Window * window) { SDL_DestroyWindow(window); }};
+
+	SDL_Renderer * tmp_renderer
+		= SDL_CreateRenderer(this->game_window.get(), -1, SDL_RENDERER_ACCELERATED);
+	if (!tmp_renderer) {
+		throw runtime_error(
+			format("SDLContext: SDL_CreateRenderer error: {}", SDL_GetError()));
 	}
+
+	this->game_renderer
+		= {tmp_renderer, [](SDL_Renderer * renderer) { SDL_DestroyRenderer(renderer); }};
+
+	int img_flags = IMG_INIT_PNG;
+	if (!(IMG_Init(img_flags) & img_flags)) {
+		throw runtime_error("SDLContext: SDL_image could not initialize!");
+	}
+
+	mediator.sdl_context = *this;
 }
 
 SDLContext::~SDLContext() {
 	dbg_trace();
 
-	if (this->game_renderer != nullptr)
-		SDL_DestroyRenderer(this->game_renderer);
-
-	if (this->game_window != nullptr) {
-		SDL_DestroyWindow(this->game_window);
-	}
+	this->game_renderer.reset();
+	this->game_window.reset();
 
 	// TODO: how are we going to ensure that these are called from the same
 	// thread that SDL_Init() was called on? This has caused problems for me
 	// before.
 	IMG_Quit();
+	TTF_Quit();
 	SDL_Quit();
 }
 
-void SDLContext::clear_screen() { SDL_RenderClear(this->game_renderer); }
+Keycode SDLContext::sdl_to_keycode(SDL_Scancode sdl_key) {
+	if (!lookup_table.contains(sdl_key)) return Keycode::NONE;
+	return lookup_table.at(sdl_key);
+}
 
-SDLContext::SDLContext() {
-	dbg_trace();
-	// FIXME: read window defaults from config manager
+const keyboard_state_t & SDLContext::get_keyboard_state() {
+	SDL_PumpEvents();
+	const Uint8 * current_state = SDL_GetKeyboardState(nullptr);
 
-	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
-		// FIXME: throw exception
-		std::cerr << "SDL could not initialize! SDL_Error: " << SDL_GetError()
-				  << std::endl;
-		return;
-	}
+	for (int i = 0; i < SDL_NUM_SCANCODES; ++i) {
 
-	this->game_window = SDL_CreateWindow(
-		"Crepe Game Engine", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
-		1920, 1080, SDL_WINDOW_SHOWN);
-	if (!this->game_window) {
-		// FIXME: throw exception
-		std::cerr << "Window could not be created! SDL_Error: "
-				  << SDL_GetError() << std::endl;
+		Keycode key = sdl_to_keycode(static_cast<SDL_Scancode>(i));
+		if (key != Keycode::NONE) {
+			this->keyboard_state[key] = current_state[i] != 0;
+		}
 	}
+	return this->keyboard_state;
+}
 
-	this->game_renderer
-		= SDL_CreateRenderer(this->game_window, -1, SDL_RENDERER_ACCELERATED);
-	if (!this->game_renderer) {
-		// FIXME: throw exception
-		std::cerr << "Renderer could not be created! SDL_Error: "
-				  << SDL_GetError() << std::endl;
-		SDL_DestroyWindow(this->game_window);
-		return;
+MouseButton SDLContext::sdl_to_mousebutton(Uint8 sdl_button) {
+	static const std::array<MouseButton, 5> MOUSE_BUTTON_LOOKUP_TABLE = [] {
+		std::array<MouseButton, 5> table{};
+		table.fill(MouseButton::NONE);
+
+		table[SDL_BUTTON_LEFT] = MouseButton::LEFT_MOUSE;
+		table[SDL_BUTTON_RIGHT] = MouseButton::RIGHT_MOUSE;
+		table[SDL_BUTTON_MIDDLE] = MouseButton::MIDDLE_MOUSE;
+		table[SDL_BUTTON_X1] = MouseButton::X1_MOUSE;
+		table[SDL_BUTTON_X2] = MouseButton::X2_MOUSE;
+
+		return table;
+	}();
+
+	if (sdl_button >= MOUSE_BUTTON_LOOKUP_TABLE.size()) {
+		// Return NONE for invalid or unmapped button
+		return MouseButton::NONE;
 	}
 
-	int img_flags = IMG_INIT_PNG;
-	if (!(IMG_Init(img_flags) & img_flags)) {
-		// FIXME: throw exception
-		std::cout << "SDL_image could not initialize! SDL_image Error: "
-				  << IMG_GetError() << std::endl;
+	return MOUSE_BUTTON_LOOKUP_TABLE[sdl_button];
+}
+
+void SDLContext::clear_screen() { SDL_RenderClear(this->game_renderer.get()); }
+void SDLContext::present_screen() {
+	SDL_SetRenderDrawColor(this->game_renderer.get(), 0, 0, 0, 255);
+	SDL_RenderFillRectF(this->game_renderer.get(), &black_bars[0]);
+	SDL_RenderFillRectF(this->game_renderer.get(), &black_bars[1]);
+	SDL_RenderPresent(this->game_renderer.get());
+}
+
+SDL_FRect SDLContext::get_dst_rect(const DestinationRectangleData & ctx) const {
+
+	const Sprite::Data & data = ctx.sprite.data;
+
+	float aspect_ratio
+		= (ctx.sprite.aspect_ratio == 0) ? ctx.texture.get_ratio() : ctx.sprite.aspect_ratio;
+
+	vec2 size = data.size;
+	if (data.size.x == 0 && data.size.y != 0) {
+		size.x = data.size.y * aspect_ratio;
 	}
+	if (data.size.y == 0 && data.size.x != 0) {
+		size.y = data.size.x / aspect_ratio;
+	}
+	size *= cam_aux_data.render_scale * ctx.img_scale * data.scale_offset;
+
+	vec2 screen_pos = (ctx.pos + data.position_offset - cam_aux_data.cam_pos
+					   + (cam_aux_data.zoomed_viewport) / 2)
+						  * cam_aux_data.render_scale
+					  - size / 2 + cam_aux_data.bar_size;
+
+	return SDL_FRect{
+		.x = screen_pos.x,
+		.y = screen_pos.y,
+		.w = size.x,
+		.h = size.y,
+	};
 }
 
-void SDLContext::present_screen() { SDL_RenderPresent(this->game_renderer); }
+void SDLContext::draw(const RenderContext & ctx) {
+	const Sprite::Data & data = ctx.sprite.data;
+	SDL_RendererFlip render_flip
+		= (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * data.flip.flip_x)
+							  | (SDL_FLIP_VERTICAL * data.flip.flip_y));
 
-void SDLContext::draw(const Sprite & sprite, const Transform & transform) {
+	SDL_Rect srcrect;
+	SDL_Rect * srcrect_ptr = NULL;
+	if (ctx.sprite.mask.w != 0 || ctx.sprite.mask.h != 0) {
+		srcrect.w = ctx.sprite.mask.w;
+		srcrect.h = ctx.sprite.mask.h;
+		srcrect.x = ctx.sprite.mask.x;
+		srcrect.y = ctx.sprite.mask.y;
+		srcrect_ptr = &srcrect;
+	}
+
+	SDL_FRect dstrect = this->get_dst_rect(SDLContext::DestinationRectangleData{
+		.sprite = ctx.sprite,
+		.texture = ctx.texture,
+		.pos = ctx.pos,
+		.img_scale = ctx.scale,
+	});
+
+	double angle = ctx.angle + data.angle_offset;
+
+	this->set_color_texture(ctx.texture, ctx.sprite.data.color);
+	SDL_RenderCopyExF(this->game_renderer.get(), ctx.texture.get_img(), srcrect_ptr, &dstrect,
+					  angle, NULL, render_flip);
+}
 
-	static SDL_RendererFlip render_flip
-		= (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * sprite.flip.flip_x)
-							  | (SDL_FLIP_VERTICAL * sprite.flip.flip_y));
+void SDLContext::update_camera_view(const Camera & cam, const vec2 & new_pos) {
 
+	const Camera::Data & cam_data = cam.data;
+	// resize window
 	int w, h;
-	SDL_QueryTexture(sprite.sprite_image->texture, NULL, NULL, &w, &h);
-	// needs maybe camera for position
-	SDL_Rect dstrect = {
-		.x = static_cast<int>(transform.position.x),
-		.y = static_cast<int>(transform.position.y),
-		.w = static_cast<int>(w * transform.scale),
-		.h = static_cast<int>(h * transform.scale),
+	SDL_GetWindowSize(this->game_window.get(), &w, &h);
+	if (w != cam.screen.x || h != cam.screen.y) {
+		SDL_SetWindowSize(this->game_window.get(), cam.screen.x, cam.screen.y);
+	}
+
+	vec2 & zoomed_viewport = this->cam_aux_data.zoomed_viewport;
+	vec2 & bar_size = this->cam_aux_data.bar_size;
+	vec2 & render_scale = this->cam_aux_data.render_scale;
+	this->cam_aux_data.cam_pos = new_pos;
+
+	zoomed_viewport = cam.viewport_size * cam_data.zoom;
+	float screen_aspect = static_cast<float>(cam.screen.x) / cam.screen.y;
+	float viewport_aspect = zoomed_viewport.x / zoomed_viewport.y;
+
+	// calculate black bars
+	if (screen_aspect > viewport_aspect) {
+		// pillarboxing
+		float scale = cam.screen.y / zoomed_viewport.y;
+		float adj_width = zoomed_viewport.x * scale;
+		float bar_width = (cam.screen.x - adj_width) / 2;
+		this->black_bars[0] = {0, 0, bar_width, (float) cam.screen.y};
+		this->black_bars[1] = {(cam.screen.x - bar_width), 0, bar_width, (float) cam.screen.y};
+
+		bar_size = {bar_width, 0};
+		render_scale.x = render_scale.y = scale;
+	} else {
+		// letterboxing
+		float scale = cam.screen.x / (cam.viewport_size.x * cam_data.zoom);
+		float adj_height = cam.viewport_size.y * scale;
+		float bar_height = (cam.screen.y - adj_height) / 2;
+		this->black_bars[0] = {0, 0, (float) cam.screen.x, bar_height};
+		this->black_bars[1]
+			= {0, (cam.screen.y - bar_height), (float) cam.screen.x, bar_height};
+
+		bar_size = {0, bar_height};
+		render_scale.x = render_scale.y = scale;
+	}
+
+	SDL_SetRenderDrawColor(this->game_renderer.get(), cam_data.bg_color.r, cam_data.bg_color.g,
+						   cam_data.bg_color.b, cam_data.bg_color.a);
+
+	SDL_Rect bg = {
+		.x = 0,
+		.y = 0,
+		.w = cam.screen.x,
+		.h = cam.screen.y,
 	};
 
-	double degrees = transform.rotation * 180 / M_PI;
-	SDL_RenderCopyEx(this->game_renderer, sprite.sprite_image->texture, NULL,
-					 &dstrect, degrees, NULL, render_flip);
+	// fill bg color
+	SDL_RenderFillRect(this->game_renderer.get(), &bg);
 }
 
-/*
-SDL_Texture * SDLContext::setTextureFromPath(const char * path, SDL_Rect & clip,
-											 const int row, const int col) {
-	dbg_trace();
+std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>>
+SDLContext::texture_from_path(const std::string & path) {
 
-	SDL_Surface * tmp = IMG_Load(path);
-	if (!tmp) {
-		std::cerr << "Error surface " << IMG_GetError << std::endl;
-	}
+	SDL_Surface * tmp = IMG_Load(path.c_str());
+	if (tmp == nullptr)
+		throw runtime_error(format("SDLContext: IMG_Load error: {}", SDL_GetError()));
 
-	clip.
-		w = tmp->w / col;
-	clip.h = tmp->h / row;
+	std::unique_ptr<SDL_Surface, std::function<void(SDL_Surface *)>> img_surface;
+	img_surface = {tmp, [](SDL_Surface * surface) { SDL_FreeSurface(surface); }};
 
-	SDL_Texture * CreatedTexture
-		= SDL_CreateTextureFromSurface(this->game_renderer, tmp);
+	SDL_Texture * tmp_texture
+		= SDL_CreateTextureFromSurface(this->game_renderer.get(), img_surface.get());
 
-	if (!CreatedTexture) {
-		std::cerr << "Error could not create texture " << IMG_GetError
-				  << std::endl;
+	if (tmp_texture == nullptr) {
+		throw runtime_error(format("SDLContext: Texture cannot be load from {}", path));
 	}
-	SDL_FreeSurface(tmp);
 
-	return CreatedTexture;
+	std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> img_texture;
+	img_texture = {tmp_texture, [](SDL_Texture * texture) { SDL_DestroyTexture(texture); }};
+
+	SDL_SetTextureBlendMode(img_texture.get(), SDL_BLENDMODE_BLEND);
+	return img_texture;
 }
-*/
 
-SDL_Texture * SDLContext::texture_from_path(const char * path) {
-	dbg_trace();
+ivec2 SDLContext::get_size(const Texture & ctx) {
+	ivec2 size;
+	SDL_QueryTexture(ctx.get_img(), NULL, NULL, &size.x, &size.y);
+	return size;
+}
+
+std::vector<EventData> SDLContext::get_events() {
+	std::vector<EventData> event_list;
+	SDL_Event event;
+	const CameraAuxiliaryData & cam = this->cam_aux_data;
+	while (SDL_PollEvent(&event)) {
+		ivec2 mouse_pos;
+		mouse_pos.x = (event.button.x - cam.bar_size.x) / cam.render_scale.x;
+		mouse_pos.y = (event.button.y - cam.bar_size.y) / cam.render_scale.y;
+		switch (event.type) {
+			case SDL_QUIT:
+				event_list.push_back({.event_type = EventType::SHUTDOWN});
+				break;
+			case SDL_KEYDOWN:
+				event_list.push_back(EventData{
+					.event_type = EventType::KEY_DOWN,
+					.data = {
+						.key_data = {
+							.key = this->sdl_to_keycode(event.key.keysym.scancode),
+							.key_repeat = event.key.repeat != 0,
+						},
+					},
+				});
+				break;
+
+			case SDL_KEYUP:
+				event_list.push_back(EventData{
+					.event_type = EventType::KEY_UP,
+					.data = {
+						.key_data = {
+							.key = this->sdl_to_keycode(event.key.keysym.scancode),
+							.key_repeat = event.key.repeat != 0,
+						},
+					},
+				});
+				break;
 
-	SDL_Surface * tmp = IMG_Load(path);
-	if (!tmp) {
-		std::cerr << "Error surface " << IMG_GetError << std::endl;
+			case SDL_MOUSEBUTTONDOWN:
+				event_list.push_back(EventData{
+					.event_type = EventType::MOUSE_DOWN,
+					.data = {
+						.mouse_data = {
+							.mouse_button = this->sdl_to_mousebutton(event.button.button),
+							.mouse_position = mouse_pos,
+						},
+					},
+				});
+				break;
+			case SDL_MOUSEBUTTONUP:
+				event_list.push_back(EventData{
+					.event_type = EventType::MOUSE_UP,
+					.data = {
+						.mouse_data = {
+							.mouse_button = this->sdl_to_mousebutton(event.button.button),
+							.mouse_position = mouse_pos,
+						},
+					},
+				});
+				break;
+
+			case SDL_MOUSEMOTION:
+				event_list.push_back(EventData{
+					.event_type = EventType::MOUSE_MOVE,
+					.data = {
+						.mouse_data = {
+							.mouse_position = mouse_pos,
+							.rel_mouse_move = {event.motion.xrel, event.motion.yrel},
+						},
+					},
+				});
+				break;
+
+			case SDL_MOUSEWHEEL:
+				event_list.push_back(EventData{
+					.event_type = EventType::MOUSE_WHEEL,
+					.data = {
+						.mouse_data = {
+							.mouse_position = mouse_pos,
+							.scroll_direction = event.wheel.y < 0 ? -1 : 1,
+							.scroll_delta = event.wheel.preciseY,
+						},
+					},
+				});
+				break;
+			case SDL_WINDOWEVENT:
+				this->handle_window_event(event.window, event_list);
+				break;
+		}
 	}
-	SDL_Texture * created_texture
-		= SDL_CreateTextureFromSurface(this->game_renderer, tmp);
 
-	if (!created_texture) {
-		std::cerr << "Error could not create texture " << IMG_GetError
-				  << std::endl;
+	return event_list;
+}
+
+void SDLContext::handle_window_event(const SDL_WindowEvent & window_event,
+									 std::vector<EventData> & event_list) {
+	switch (window_event.event) {
+		case SDL_WINDOWEVENT_EXPOSED:
+			event_list.push_back(EventData{EventType::WINDOW_EXPOSE});
+			break;
+		case SDL_WINDOWEVENT_RESIZED:
+			event_list.push_back(EventData{
+					.event_type = EventType::WINDOW_RESIZE,
+					.data = {
+						.window_data = {
+							.resize_dimension = {window_event.data1, window_event.data2}
+						},
+					},
+				});
+			break;
+		case SDL_WINDOWEVENT_MOVED:
+			event_list.push_back(EventData{
+					.event_type = EventType::WINDOW_MOVE,
+					.data = {
+						.window_data = {
+							.move_delta = {window_event.data1, window_event.data2}
+						},
+					},
+				});
+			break;
+
+		case SDL_WINDOWEVENT_MINIMIZED:
+			event_list.push_back(EventData{EventType::WINDOW_MINIMIZE});
+			break;
+		case SDL_WINDOWEVENT_MAXIMIZED:
+			event_list.push_back(EventData{EventType::WINDOW_MAXIMIZE});
+			break;
+		case SDL_WINDOWEVENT_FOCUS_GAINED:
+			event_list.push_back(EventData{EventType::WINDOW_FOCUS_GAIN});
+			break;
+		case SDL_WINDOWEVENT_FOCUS_LOST:
+			event_list.push_back(EventData{EventType::WINDOW_FOCUS_LOST});
+			break;
 	}
-	SDL_FreeSurface(tmp);
+}
+
+void SDLContext::set_color_texture(const Texture & texture, const Color & color) {
+	SDL_SetTextureColorMod(texture.get_img(), color.r, color.g, color.b);
+	SDL_SetTextureAlphaMod(texture.get_img(), color.a);
+}
 
-	return created_texture;
+Asset SDLContext::get_font_from_name(const std::string & font_family) {
+	return this->font_facade.get_font_asset(font_family);
 }