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Diffstat (limited to 'src/crepe/facade/SDLContext.cpp')
-rw-r--r--src/crepe/facade/SDLContext.cpp99
1 files changed, 59 insertions, 40 deletions
diff --git a/src/crepe/facade/SDLContext.cpp b/src/crepe/facade/SDLContext.cpp
index 0cb7be9..74af25f 100644
--- a/src/crepe/facade/SDLContext.cpp
+++ b/src/crepe/facade/SDLContext.cpp
@@ -1,5 +1,6 @@
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_keycode.h>
#include <SDL2/SDL_rect.h>
#include <SDL2/SDL_render.h>
#include <SDL2/SDL_surface.h>
@@ -7,13 +8,15 @@
#include <cmath>
#include <cstddef>
#include <functional>
-#include <iostream>
#include <memory>
+#include <stdexcept>
#include <string>
+#include "../api/Camera.h"
#include "../api/Sprite.h"
#include "../api/Texture.h"
#include "../api/Transform.h"
+#include "../api/Vector2.h"
#include "../util/Log.h"
#include "api/Vector2.h"
@@ -31,29 +34,22 @@ SDLContext::SDLContext() {
dbg_trace();
// FIXME: read window defaults from config manager
- if (SDL_Init(SDL_INIT_VIDEO) < 0) {
- // FIXME: throw exception
- std::cerr << "SDL could not initialize! SDL_Error: " << SDL_GetError() << std::endl;
- return;
+ if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+ throw runtime_error(format("SDLContext: SDL_Init error: {}", SDL_GetError()));
}
SDL_Window * tmp_window
= SDL_CreateWindow("Crepe Game Engine", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
this->viewport.w, this->viewport.h, 0);
if (!tmp_window) {
- // FIXME: throw exception
- std::cerr << "Window could not be created! SDL_Error: " << SDL_GetError() << std::endl;
- return;
+ 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) {
- // FIXME: throw exception
- std::cerr << "Renderer could not be created! SDL_Error: " << SDL_GetError()
- << std::endl;
- SDL_DestroyWindow(this->game_window.get());
- return;
+ throw runtime_error(
+ format("SDLContext: SDL_CreateRenderer error: {}", SDL_GetError()));
}
this->game_renderer
@@ -61,9 +57,7 @@ SDLContext::SDLContext() {
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;
+ throw runtime_error("SDLContext: SDL_image could not initialize!");
}
}
@@ -79,7 +73,6 @@ SDLContext::~SDLContext() {
IMG_Quit();
SDL_Quit();
}
-
void SDLContext::handle_events(bool & running) {
//TODO: wouter i need events
/*
@@ -104,37 +97,64 @@ void SDLContext::handle_events(bool & running) {
void SDLContext::clear_screen() { SDL_RenderClear(this->game_renderer.get()); }
void SDLContext::present_screen() { SDL_RenderPresent(this->game_renderer.get()); }
-void SDLContext::draw(const Sprite & sprite, const Transform & transform, const Camera & cam) {
-
- SDL_RendererFlip render_flip
- = (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * sprite.flip.flip_x)
- | (SDL_FLIP_VERTICAL * sprite.flip.flip_y));
-
- Vector2 pixel_coord = (transform.position - cam.pos) * cam.scale;
- double pixel_w = sprite.sprite_rect.w * transform.scale * cam.scale.x;
- double pixel_h = sprite.sprite_rect.h * transform.scale * cam.scale.y;
-
- // decides which part of the sprite will be drawn
- SDL_Rect srcrect = {
+SDL_Rect SDLContext::get_src_rect(const Sprite & sprite) const {
+ return SDL_Rect{
.x = sprite.sprite_rect.x,
.y = sprite.sprite_rect.y,
.w = sprite.sprite_rect.w,
.h = sprite.sprite_rect.h,
};
+}
+SDL_Rect SDLContext::get_dst_rect(const Sprite & sprite, const Vector2 & pos,
+ const double & scale, const Camera & cam) const {
- // decides where the clipped image is drawn
- SDL_Rect dstrect = {
- .x = static_cast<int>(pixel_coord.x),
- .y = static_cast<int>(pixel_coord.y),
- .w = static_cast<int>(pixel_w),
- .h = static_cast<int>(pixel_h),
+ Vector2 pixel_coord = (transform.position - cam.pos) * cam.scale;
+ double pixel_w = sprite.sprite_rect.w * transform.scale * cam.scale.x;
+ double pixel_h = sprite.sprite_rect.h * transform.scale * cam.scale.y;
+
+ double adjusted_x = (pos.x - cam.x) * cam.zoom;
+ double adjusted_y = (pos.y - cam.y) * cam.zoom;
+ double adjusted_w = sprite.sprite_rect.w * scale * cam.zoom;
+ double adjusted_h = sprite.sprite_rect.h * scale * cam.zoom;
+
+ return SDL_Rect{
+ .x = static_cast<int>(adjusted_x),
+ .y = static_cast<int>(adjusted_y),
+ .w = static_cast<int>(adjusted_w),
+ .h = static_cast<int>(adjusted_h),
};
+}
+
+void SDLContext::draw_particle(const Sprite & sprite, const Vector2 & pos,
+ const double & angle, const double & scale,
+ const Camera & camera) {
+
+ SDL_RendererFlip render_flip
+ = (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * sprite.flip.flip_x)
+ | (SDL_FLIP_VERTICAL * sprite.flip.flip_y));
+
+ SDL_Rect srcrect = this->get_src_rect(sprite);
+ SDL_Rect dstrect = this->get_dst_rect(sprite, pos, scale, camera);
+
+ SDL_RenderCopyEx(this->game_renderer.get(), sprite.sprite_image->texture.get(), &srcrect,
+ &dstrect, angle, NULL, render_flip);
+}
+
+void SDLContext::draw(const Sprite & sprite, const Transform & transform, const Camera & cam) {
+
+ SDL_RendererFlip render_flip
+ = (SDL_RendererFlip) ((SDL_FLIP_HORIZONTAL * sprite.flip.flip_x)
+ | (SDL_FLIP_VERTICAL * sprite.flip.flip_y));
+
+ SDL_Rect srcrect = this->get_src_rect(sprite);
+ SDL_Rect dstrect = this->get_dst_rect(sprite, transform.position, transform.scale, cam);
SDL_RenderCopyEx(this->game_renderer.get(), sprite.sprite_image->texture.get(), &srcrect,
&dstrect, transform.rotation, NULL, render_flip);
}
-void SDLContext::camera(Camera & cam) {
+void SDLContext::set_camera(const Camera & cam) {
+
double screen_aspect = cam.screen.x / cam.screen.y;
double viewport_aspect = cam.viewport.x / cam.viewport.y;
@@ -162,9 +182,8 @@ std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>>
SDLContext::texture_from_path(const std::string & path) {
SDL_Surface * tmp = IMG_Load(path.c_str());
- if (tmp == nullptr) {
- tmp = IMG_Load("../asset/texture/ERROR.png");
- }
+ if (tmp == nullptr)
+ throw runtime_error(format("SDLContext: IMG_Load error: {}", SDL_GetError()));
std::unique_ptr<SDL_Surface, std::function<void(SDL_Surface *)>> img_surface;
img_surface = {tmp, [](SDL_Surface * surface) { SDL_FreeSurface(surface); }};
@@ -173,7 +192,7 @@ SDLContext::texture_from_path(const std::string & path) {
= SDL_CreateTextureFromSurface(this->game_renderer.get(), img_surface.get());
if (tmp_texture == nullptr) {
- throw runtime_error(format("Texture cannot be load from {}", path));
+ throw runtime_error(format("SDLContext: Texture cannot be load from {}", path));
}
std::unique_ptr<SDL_Texture, std::function<void(SDL_Texture *)>> img_texture;