Primer commit

source/main.cpp

@@ -0,0 +1,168 @@
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+#include "texture.h"
+#include "ball.h"
+#include "defines.h"
+#include <iostream>
+
+SDL_Window *window = NULL;
+SDL_Renderer *renderer = NULL;
+SDL_Event *event;
+Texture *texture = nullptr;
+Ball *ball[NUM_BALLS];
+
+bool shouldExit = false;
+Uint32 ticks = 0;
+
+bool init()
+{
+	// Initialization flag
+	bool success = true;
+
+	// Initialize SDL
+	if (SDL_Init(SDL_INIT_VIDEO) < 0)
+	{
+		printf("SDL could not initialize! SDL Error: %s\n", SDL_GetError());
+		success = false;
+	}
+	else
+	{
+		// Set texture filtering to linear
+		if (!SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1"))
+		{
+			printf("Warning: Linear texture filtering not enabled!");
+		}
+
+		// Create window
+		window = SDL_CreateWindow("SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH * 2, SCREEN_HEIGHT * 2, SDL_WINDOW_SHOWN);
+		if (window == NULL)
+		{
+			printf("Window could not be created! SDL Error: %s\n", SDL_GetError());
+			success = false;
+		}
+		else
+		{
+			// Create renderer for window
+			renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+			if (renderer == NULL)
+			{
+				printf("Renderer could not be created! SDL Error: %s\n", SDL_GetError());
+				success = false;
+			}
+			else
+			{
+				// Initialize renderer color
+				SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
+
+				// Initialize PNG loading
+				int imgFlags = IMG_INIT_PNG;
+				if (!(IMG_Init(imgFlags) & imgFlags))
+				{
+					printf("SDL_image could not initialize! SDL_image Error: %s\n", IMG_GetError());
+					success = false;
+				}
+
+				SDL_RenderSetLogicalSize(renderer, SCREEN_WIDTH, SCREEN_HEIGHT);
+			}
+		}
+	}
+
+	event = new SDL_Event();
+
+	texture = new Texture(renderer, "resources/pelota.png");
+	for (int i = 0; i < NUM_BALLS; ++i)
+	{
+		ball[i] = new Ball(rand() % SCREEN_WIDTH, rand() % SCREEN_HEIGHT, 24, 24, 1, 1, texture);
+	}
+
+	ticks = SDL_GetTicks();
+
+	return success;
+}
+
+void close()
+{
+	// Destroy window
+	SDL_DestroyRenderer(renderer);
+	SDL_DestroyWindow(window);
+	window = NULL;
+	renderer = NULL;
+
+	if (event)
+	{
+		delete event;
+	}
+
+	if (texture)
+	{
+		delete texture;
+	}
+
+	for (int i = 0; i < NUM_BALLS; ++i)
+	{
+		if (ball[i])
+		{
+			delete ball[i];
+		}
+	}
+
+	// Quit SDL subsystems
+	IMG_Quit();
+	SDL_Quit();
+}
+
+void checkEvents()
+{
+	// Comprueba los eventos que hay en la cola
+	while (SDL_PollEvent(event) != 0)
+	{
+		// Evento de salida de la aplicación
+		if (event->type == SDL_QUIT)
+		{
+			shouldExit = true;
+			break;
+		}
+	}
+}
+
+void update()
+{
+	if (SDL_GetTicks() - ticks > 15)
+	{
+		ticks = SDL_GetTicks();
+
+		for (int i = 0; i < NUM_BALLS; ++i)
+		{
+			ball[i]->update();
+		}
+	}
+}
+
+void render()
+{
+	SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+	SDL_RenderClear(renderer);
+
+	for (int i = 0; i < NUM_BALLS; ++i)
+	{
+		ball[i]->render();
+	}
+
+	SDL_RenderPresent(renderer);
+}
+
+int main(int argc, char *args[])
+{
+	init();
+
+	while (!shouldExit)
+	{
+		update();
+		checkEvents();
+		render();
+	}
+
+	close();
+
+	return 0;
+}