Game-Engine/platform/linux/examples/function_plotter.cpp at master · unpwnabl/Game-Engine · GitHub

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// Thirdparty
#include <SDL2/SDL.h>
#include <SDL2/SDL_ttf.h>
#include <SDL2/SDL_image.h>
// C++
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <cstdlib>
#include <unistd.h>
// Game Engine
#include "vars.hpp"
#include "../../core/misc/include/log.hpp"
#include "../../core/misc/include/colors.h"
#include "../../core/misc/include/fps.h"
#include "../../core/misc/include/mouse.h"
#include "../../core/misc/include/keyboard.h"
#include "../../core/misc/include/events.h"
#include "../../core/misc/include/matrix.hpp"
#include "../../core/ui/include/window.h"
#include "../../core/ui/include/renderer.h"
#include "../../core/ui/include/text.h"
#include "../../core/ui/include/font_paths.hpp"
#include "../../src/2d/include/image.h"
#include "../../src/2d/include/polygons.h"
#include "../../src/2d/include/spritesheet.h"
#include "../../src/2d/include/vector2d.hpp"
#include "../../src/3d/include/vector3d.hpp"
#include "../../src/3d/include/solids.h"
#include "../../src/misc/include/gameobj.h"
#include "../../src/misc/include/rigidbody.h"

bool gameloop = true;

int main() {
	system("clear");
	debug_b();
	success("Application started");

	if (SDL_Init(SDL_INIT_VIDEO) < 0) {
		error("game.cpp > Couldn't initialize SDL: ");
	}
	// Create the window
	SDL_Window *window = NULL;
	create_window(window, "Test", 0, 0, W_W, W_H, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI);
	// Create the renderer
	SDL_Renderer *renderer;
	create_renderer(window, renderer);
	// Initialize text manager
	init_ttf();
	TTF_Font *roboto = TTF_OpenFont(roboto_path, 10);
	// Initialize image manager for PNG format
	init_img(IMG_INIT_PNG);


	// TODO: implement expression parsing for custom functions
	// for now only points
	int points[] = {-42, -59, 98, -24, -52, -22, -42, 8, 8, 89, -83, 83, -29, -71, 20, -73, -27, -88, 87, -37, -33, 33, 57, 10};

	int n_points = 24;

	float pos = 0;
	float step = W_W / n_points;

	Vector2D vertices[n_points];

	for (int i = 0; i < n_points; i++) {
		vertices[i] = Vector2D(pos, points[i] + W_H / 2);
		pos += step;
	}

	while (gameloop) {
		// Start counting ticks
		Uint64 start = SDL_GetTicks();
		// Event handler
		event_handler(window, gameloop);
		// Clear previous frame
		renderer_clear(renderer);

		// X axis
		line(renderer, Vector2D(0, W_H / 2), Vector2D(W_W, W_H / 2));
		// Y axis
		line(renderer, Vector2D(W_W / 2, 0), Vector2D(W_W / 2, W_H));

		// Draw points and connect them
		for (int i = 0; i < n_points; i++) {
			if (i + 1 != n_points) {
				connect(renderer, vertices[i], vertices[i + 1], C_BLUE);
			}
			point(renderer, vertices[i]);
		}

		// Cap FPS
		cap(start, MAX_FPS, true, renderer, roboto);
		// Update renderer
		renderer_update(renderer);
	}

	// End program and clean memory
	TTF_CloseFont(roboto);
	close_ttf();
	close_img();
	destroy_renderer(renderer);
	destroy_window(window);

	SDL_Quit();
	success("Application terminated");
}