570 lines
18 KiB
C++
570 lines
18 KiB
C++
#ifndef SDLPP_HPP
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#define SDLPP_HPP
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_image.h>
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#include <iostream>
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#include <limits>
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#include <memory>
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#include <vector>
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namespace SDLPP {
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int hex2num(char c);
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std::tuple<int, int, int> getColorsHEX(const std::string &color);
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class Window {
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public:
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Window() : Window("SDL Window", 640, 480, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED) {
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}
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Window(const std::string &window_name) : Window(window_name, 640, 480, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED) {
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}
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Window(const std::string &window_name, uint32_t width, uint32_t height) : Window(window_name, width, height, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED) {}
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Window(const std::string &window_name, uint32_t width, uint32_t height,
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uint32_t posx, uint32_t posy) {
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window = SDL_CreateWindow(window_name.c_str(), posx, posy, width, height, SDL_WINDOW_SHOWN);
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if( window == NULL ) {
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std::cerr << "SDL could not create a window! SDL_Error: " << SDL_GetError() << std::endl;
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throw "Couldn't create window";
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}
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}
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~Window() {
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SDL_DestroyWindow(window);
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}
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SDL_Window *getWindowPtr() {
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return window;
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}
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private:
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SDL_Window *window = NULL;
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};
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class Renderer {
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public:
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Renderer() = delete;
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Renderer(Window &window) {
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renderer = SDL_CreateRenderer(window.getWindowPtr(), -1, SDL_RENDERER_ACCELERATED);
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if(renderer == NULL ) {
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std::cerr << "SDL could not create a renderer! SDL_Error: " << SDL_GetError();
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throw "Couldn't create renderer";
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}
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SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
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}
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~Renderer() {
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SDL_DestroyRenderer(renderer);
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}
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SDL_Renderer *getRendererPtr() {
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return renderer;
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}
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std::pair<int, int> getDimensions() const {
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int width = 0, height = 0;
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SDL_GetRendererOutputSize(renderer, &width, &height);
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return {width, height};
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}
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int getWidth() const {
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return getDimensions().first;
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}
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int getHeight() const {
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return getDimensions().second;
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}
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int getSmallerSide() const {
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auto dimensions = getDimensions();
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return dimensions.first < dimensions.second ? dimensions.first : dimensions.second;
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}
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int getLargerSide() const {
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auto dimensions = getDimensions();
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return dimensions.first > dimensions.second ? dimensions.first : dimensions.second;
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}
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void setBlendMode(SDL_BlendMode blendMode) {
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SDL_SetRenderDrawBlendMode(renderer, blendMode);
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}
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void setRenderColiders(bool render) {
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render_coliders = render;
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}
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bool getRenderColiders() {
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return render_coliders;
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}
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private:
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SDL_Renderer *renderer = NULL;
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bool render_coliders = false;
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};
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class Texture {
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public:
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Texture() = delete;
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Texture(std::shared_ptr<Renderer> &renderer, const std::string &img_path) : Texture(renderer, img_path, "") {}
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Texture(std::shared_ptr<Renderer> &renderer, const std::string &img_path, const std::string &color_key) {
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SDL_Surface *surface = IMG_Load(img_path.c_str());
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if( surface == NULL ) {
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std::cerr << "Unable to load image '" << img_path << "': IMG Error: " << IMG_GetError() << std::endl;
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throw "IMG_Load error";
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}
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if( !color_key.empty() ) {
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auto colors = getColorsHEX(color_key);
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SDL_SetColorKey(surface, SDL_TRUE, SDL_MapRGB(surface->format, std::get<0>(colors), std::get<1>(colors), std::get<2>(colors)));
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}
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texture = SDL_CreateTextureFromSurface(renderer->getRendererPtr(), surface);
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if( texture == NULL ) {
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std::cerr << "Unable to create texture from '" << img_path << "'! SDL Error: " << SDL_GetError() << std::endl;
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throw "Texture error";
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}
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SDL_FreeSurface(surface);
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}
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~Texture() {
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SDL_DestroyTexture(texture);
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}
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SDL_Texture *getTexturePtr() {
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return texture;
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}
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private:
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SDL_Texture *texture = NULL;
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};
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class CollisionPolygon {
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public:
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CollisionPolygon(double x, double y) {
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original_x = x;
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original_y = y;
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position_x = 0;
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position_y = 0;
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}
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virtual ~CollisionPolygon() {}
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virtual bool colidesWith(const CollisionPolygon &other) const = 0;
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virtual bool isCircle() const = 0;
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virtual bool isInfinite() const { return infinite; }
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virtual void setInfinite() { infinite = true; }
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virtual int topmost() const = 0;
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virtual int bottommost() const = 0;
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virtual int leftmost() const = 0;
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virtual int rightmost() const = 0;
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virtual void updateCollision(int x, int y, int w, int h) {
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position_x = original_x * w + x;
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position_y = original_y * h + y;
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}
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virtual void render(Renderer &renderer, const std::tuple<int,int,int> &color) = 0;
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int getX() const {
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return position_x;
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}
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int getY() const {
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return position_y;
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}
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protected:
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double original_x;
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double original_y;
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int position_x;
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int position_y;
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bool infinite = false;
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};
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class RenderObject {
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public:
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RenderObject(std::shared_ptr<Renderer> &r) : renderer(r) {}
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virtual ~RenderObject() {}
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virtual void render() = 0;
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virtual int leftmost() = 0;
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virtual int topmost() = 0;
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virtual int rightmost() = 0;
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virtual int bottommost() = 0;
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virtual int collisionPushX() = 0;
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virtual int collisionPushY() = 0;
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virtual int collisionWidth() = 0;
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virtual int collisionHeight() = 0;
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virtual std::pair<std::pair<double,double>,std::pair<double,double>> getDoubleRect() = 0;
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virtual void setPos(double x, double y) = 0;
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bool colidesWith(const RenderObject &other) const {
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if(!hasCollisions() || !other.hasCollisions()) {
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return false;
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}
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for( const auto &x : collisions ) {
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for( const auto &y : other.getCollisions() ) {
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if(x->colidesWith(*y))
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return true;
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}
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}
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return false;
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}
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template<class T>
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void addCollision(const T &p) {
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collisions.push_back(std::make_shared<T>(p));
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collisions.back()->updateCollision(collisionPushX(), collisionPushY(), collisionWidth(), collisionHeight());
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}
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bool hasCollisions() const {
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return !collisions.empty();
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}
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const std::vector<std::shared_ptr<CollisionPolygon>> &getCollisions() const {
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return collisions;
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}
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void setTexture(std::shared_ptr<Texture> &t) {
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texture = t;
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}
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void setTexture(const std::string &img_path) {
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texture = std::make_shared<Texture>(renderer, img_path);
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}
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// per second, relative to window width
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void setMovementSpeed(double speed) {
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movementSpeed = speed;
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}
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void addMovement(int x, int y) {
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movementDirection.first += x;
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movementDirection.second += y;
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}
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void clearColided() {
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colidedWith.clear();
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}
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void addColided(std::shared_ptr<RenderObject> &obj) {
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colidedWith.push_back(obj);
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}
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std::vector<std::shared_ptr<RenderObject>> &getColidedWith() {
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return colidedWith;
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}
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void setId(uint64_t input_id) {
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id = input_id;
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}
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uint64_t getId() {
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return id;
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}
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void setHidden(bool hid) {
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hidden = hid;
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}
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bool getHidden() {
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return hidden;
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}
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void setColiderColor(const std::string &color) {
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colider_color = getColorsHEX(color);
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}
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virtual void move(int ticks) = 0;
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virtual void updateSizeAndPosition() = 0;
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virtual SDL_Rect getRect() = 0;
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protected:
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std::vector<std::shared_ptr<CollisionPolygon>> collisions;
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std::shared_ptr<Texture> texture;
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std::shared_ptr<Renderer> renderer;
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double movementSpeed;
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std::pair<int,int> movementDirection;
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std::vector<std::shared_ptr<RenderObject>> colidedWith;
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uint64_t id;
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bool hidden = false;
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std::tuple<int,int,int> colider_color = {0x00, 0xFF, 0xFF};
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};
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class Scene {
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public:
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Scene(std::shared_ptr<Renderer> &r) : renderer(r) {
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SDL_SetRenderDrawColor(renderer->getRendererPtr(), 0xFF, 0xFF, 0xFF, 0xFF);
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prev_ticks = SDL_GetTicks();
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}
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void addObject(const std::shared_ptr<RenderObject> &obj) {
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renderObjects.push_back(obj);
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if(obj->hasCollisions()) {
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collisionObjects.push_back(obj);
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}
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if(renderObjects.size() == 1) {
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leftmost_obj = obj;
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rightmost_obj = obj;
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} else {
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auto rect = obj->getDoubleRect();
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auto leftmost_rect = leftmost_obj->getDoubleRect();
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if(rect.first.first < leftmost_rect.first.first)
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leftmost_obj = obj;
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auto rightmost_rect = rightmost_obj->getDoubleRect();
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if(rect.first.first + rect.second.first > rightmost_rect.first.first + rightmost_rect.second.first)
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rightmost_obj = obj;
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}
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}
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std::shared_ptr<RenderObject> getObject(int index) {
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return renderObjects[index];
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}
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void movement() {
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int now_ticks = SDL_GetTicks();
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for( const auto &x : renderObjects ) {
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x->move(now_ticks - prev_ticks);
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}
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prev_ticks = now_ticks;
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}
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std::vector<std::shared_ptr<RenderObject>> getCollisions(RenderObject &r) {
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std::vector<std::shared_ptr<RenderObject>> ret{};
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for(const auto &x : collisionObjects) {
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if(x->colidesWith(r)) {
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ret.push_back(x);
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}
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}
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return ret;
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}
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void renderScene() {
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SDL_RenderClear(renderer->getRendererPtr());
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SDL_RenderCopy(renderer->getRendererPtr(), background->getTexturePtr(), NULL, NULL);
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for( const auto &x : renderObjects ) {
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x->render();
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}
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}
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void presentScene() {
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SDL_RenderPresent(renderer->getRendererPtr());
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}
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void setBackground(std::shared_ptr<Texture> bg) {
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background = bg;
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}
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void setBackground(const std::string &img_path) {
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background = std::make_shared<Texture>(renderer, img_path);
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}
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void updateSizeAndPosition() {
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for( auto &x : renderObjects ) {
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x->updateSizeAndPosition();
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}
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}
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void moveEverything(double x, double y) {
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for( auto &obj : renderObjects ) {
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auto curPos = obj->getDoubleRect();
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obj->setPos( curPos.first.first + x, curPos.first.second + y );
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}
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}
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const std::shared_ptr<RenderObject> &leftmost() {
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return leftmost_obj;
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}
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const std::shared_ptr<RenderObject> &rightmost() {
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return rightmost_obj;
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}
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std::pair<int, int> getDimensions() const {
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return renderer->getDimensions();
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}
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int getWidth() const {
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return renderer->getWidth();
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}
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int getHeight() const {
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return renderer->getHeight();
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}
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Renderer &getRenderer() {
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return *renderer;
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}
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private:
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std::vector<std::shared_ptr<RenderObject>> renderObjects;
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std::vector<std::shared_ptr<RenderObject>> collisionObjects;
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std::shared_ptr<Renderer> renderer;
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std::shared_ptr<Texture> background;
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int prev_ticks = 0;
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std::shared_ptr<RenderObject> leftmost_obj;
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std::shared_ptr<RenderObject> rightmost_obj;
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};
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class RectangleRender : public RenderObject {
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public:
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RectangleRender() = delete;
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virtual ~RectangleRender() {};
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RectangleRender(double x, double y, double w, double h, std::shared_ptr<Renderer> &r) : RenderObject(r) {
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auto dimension = renderer->getSmallerSide();
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rect.x = x * dimension;
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rect.y = y * dimension;
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rect.w = w * dimension;
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rect.h = h * dimension;
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x_ = x;
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y_ = y;
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w_ = w;
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h_ = h;
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}
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RectangleRender(int x, int y, int w, int h, std::shared_ptr<Renderer> &r, std::shared_ptr<Texture> &t) : RectangleRender(x, y, w, h, r) {
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setTexture(t);
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}
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RectangleRender(int x, int y, int w, int h, std::shared_ptr<Renderer> &r, const std::string &img_path) : RectangleRender(x,y,w,h,r) {
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auto texture = std::make_shared<Texture>(r, img_path);
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setTexture(texture);
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}
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virtual void render() {
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if(texture != NULL)
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SDL_RenderCopy(renderer->getRendererPtr(), texture->getTexturePtr(), NULL, &rect);
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if(hasCollisions() && renderer->getRenderColiders()) {
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for(const auto &col : getCollisions())
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col->render(*renderer, colider_color);
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}
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}
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virtual void move(int ticks) {
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auto dimension = renderer->getSmallerSide();
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auto addx = static_cast<double>(movementSpeed * movementDirection.first)*(static_cast<double>(ticks)/1000);
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auto addy = static_cast<double>(movementSpeed * movementDirection.second)*(static_cast<double>(ticks)/1000);
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x_ += addx;
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y_ += addy;
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rect.x = x_ * dimension;
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rect.y = y_ * dimension;
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for( auto &x : collisions ) {
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x->updateCollision(collisionPushX(), collisionPushY(), collisionWidth(), collisionHeight());
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}
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}
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virtual std::pair<std::pair<double,double>,std::pair<double,double>> getDoubleRect() {
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return {{x_,y_}, {w_,h_}};
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}
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virtual void setPos(double x, double y) {
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auto dimension = renderer->getSmallerSide();
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x_ = x;
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y_ = y;
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rect.x = x_ * dimension;
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rect.y = y_ * dimension;
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}
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virtual int leftmost() {
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return rect.x;
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}
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virtual int topmost() {
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return rect.y;
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}
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virtual int rightmost() {
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return rect.x + rect.w;
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}
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virtual int bottommost() {
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return rect.y + rect.h;
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}
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virtual int collisionPushX() {
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return rect.x;
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}
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virtual int collisionPushY() {
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return rect.y;
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}
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virtual int collisionWidth() {
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return rect.w;
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}
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virtual int collisionHeight() {
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return rect.h;
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}
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virtual void updateSizeAndPosition() {
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auto dimension = renderer->getSmallerSide();
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rect.x = x_ * dimension;
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rect.y = y_ * dimension;
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rect.w = w_ * dimension;
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rect.h = h_ * dimension;
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}
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virtual SDL_Rect getRect() {
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return rect;
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}
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protected:
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double x_;
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double y_;
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double w_;
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double h_;
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SDL_Rect rect;
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};
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class CircleRender : public RenderObject {
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public:
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CircleRender() = delete;
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virtual ~CircleRender() {};
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CircleRender(int x, int y, int rad, std::shared_ptr<Renderer> &r) : RenderObject(r) {
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x_ = x;
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y_ = y;
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rad_ = rad;
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}
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CircleRender(int x, int y, int rad, std::shared_ptr<Renderer> &r, std::shared_ptr<Texture> &t) : CircleRender(x,y,rad,r) {
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setTexture(t);
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}
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CircleRender(int x, int y, int rad, std::shared_ptr<Renderer> &r, const std::string &img_path) : CircleRender(x,y,rad,r) {
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auto texture = std::make_shared<Texture>(r, img_path);
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setTexture(texture);
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}
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virtual void render();
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virtual int leftmost() {
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return x_-rad_;
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}
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virtual int topmost() {
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return y_-rad_;
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}
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virtual int collisionPushX() {
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return x_;
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}
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virtual int collisionPushY() {
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return y_;
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}
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private:
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int x_;
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int y_;
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int rad_;
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};
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class Rect : public CollisionPolygon {
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public:
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Rect(int x, int y, int w, int h) : CollisionPolygon(x, y) {
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w_ = w;
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h_ = h;
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}
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virtual ~Rect() {}
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virtual bool colidesWith(const CollisionPolygon &other) const override;
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virtual bool isCircle() const override { return false; }
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virtual int topmost() const override {
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return (!isInfinite() || original_y != -1) * getY() + isInfinite() * -1;
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}
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virtual int bottommost() const override {
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return (!isInfinite() || h_ != -1) * (getY() + pixel_h) + isInfinite() * -1;
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};
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virtual int leftmost() const override {
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return (!isInfinite() || original_x != -1) * getX() + isInfinite() * -1;
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}
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virtual int rightmost() const override {
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return (!isInfinite() || w_ != -1) * (getX() + pixel_w) + isInfinite() * -1;
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}
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virtual void updateCollision(int x, int y, int w, int h) override {
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position_x = original_x * w + x;
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position_y = original_y * h + y;
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pixel_w = w_ * w;
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pixel_h = h_ * h;
|
|
}
|
|
virtual void render(Renderer &renderer, const std::tuple<int,int,int> &color) override {
|
|
auto rect = getRect();
|
|
// outline with desired color at 50% opacity
|
|
SDL_SetRenderDrawColor(renderer.getRendererPtr(), std::get<0>(color), std::get<1>(color), std::get<2>(color), 0x80);
|
|
SDL_RenderDrawRect(renderer.getRendererPtr(), &rect);
|
|
// fill with desired color at 25% opacity
|
|
SDL_SetRenderDrawColor(renderer.getRendererPtr(), std::get<0>(color), std::get<1>(color), std::get<2>(color), 0x40);
|
|
SDL_RenderFillRect(renderer.getRendererPtr(), &rect);
|
|
}
|
|
private:
|
|
SDL_Rect getRect() {
|
|
if( !isInfinite() )
|
|
return {leftmost(), topmost(), pixel_w, pixel_h};
|
|
|
|
SDL_Rect r = {0,0,0,0};
|
|
if((r.x = leftmost()) == -1)
|
|
r.x = 0;
|
|
if((r.y = topmost()) == -1)
|
|
r.y = 0;
|
|
if(rightmost() == -1)
|
|
r.w = std::numeric_limits<int>::max();
|
|
else
|
|
r.w = pixel_w;
|
|
if(bottommost() == -1)
|
|
r.h = std::numeric_limits<int>::max();
|
|
else
|
|
r.h = pixel_h;
|
|
return r;
|
|
}
|
|
|
|
double w_;
|
|
double h_;
|
|
int pixel_w;
|
|
int pixel_h;
|
|
};
|
|
|
|
class Circle : public CollisionPolygon {
|
|
public:
|
|
Circle(int x, int y, int rad) : CollisionPolygon(x, y) {
|
|
rad_ = rad;
|
|
}
|
|
virtual ~Circle() {}
|
|
virtual bool colidesWith(const CollisionPolygon &other) const;
|
|
virtual bool isCircle() const { return true; }
|
|
virtual int topmost() const { return getY() - rad_; }
|
|
virtual int bottommost() const { return getY() + rad_; };
|
|
virtual int leftmost() const { return getX() - rad_; }
|
|
virtual int rightmost() const { return getX() + rad_; }
|
|
private:
|
|
int getRadius() const {
|
|
return rad_;
|
|
}
|
|
int rad_;
|
|
};
|
|
|
|
bool init();
|
|
bool init(uint32_t SDL_OPTIONS);
|
|
bool init(uint32_t SDL_OPTIONS, int IMAGE_OPTIONS);
|
|
|
|
template<class T>
|
|
void testPolymorphism(T &obj);
|
|
|
|
} // end of namespace SDLPP
|
|
|
|
#endif
|