feat: added paddle, point and ball (collision and movement)

src/elements.cpp

@@ -0,0 +1,68 @@
+#include "elements.hpp"
+#include "globals.hpp"
+#include <iostream>
+
+Point::Point() {
+	m_row = 0;
+	m_col = 0;
+}
+
+void Point::assign(int row, int col) {
+	m_row = row;
+	m_col = col;
+}
+
+void Point::to_string() {
+	std::cout << "(" << m_row << ", " << m_col << ")";
+}
+
+Paddle::Paddle() {
+	_size = 3;
+	m_nodes[0].m_col = 6;
+	for(int i = 0; i < _size; i++) {
+		m_nodes[i].m_row = 8;
+
+	}
+}
+
+void Paddle::get_new_pos() {
+	for(int i = 1; i < _size; i++) {
+		m_nodes[i].m_col = m_nodes[0].m_col + i;	
+	}
+}
+
+Ball::Ball() {
+	m_origin.assign(ROW - 3, (COL / 2));
+	vx = 1;
+	vy = -1;
+}
+
+void Ball::change_velocity(char d) {
+	if(d == 'x') {
+		if(vx == -1) vx = 1;
+		else if (vx == 1) vx = -1;
+	} else if(d == 'y') {
+		if(vy == -1) vy = 1;
+		else if (vy == 1) vy = -1;
+	}
+}
+
+void Ball::check_collision() {
+	if(m_origin.m_row <= 0 || m_origin.m_row >= ROW -1) {
+		change_velocity('y');
+	} if(m_origin.m_col <= 0 || m_origin.m_col >= COL -1) {
+		change_velocity('x');
+	}
+}
+
+void Ball::get_new_pos() {
+	if(vx == -1) {
+		m_origin.m_col--;
+	} else if(vx == 1) {
+		m_origin.m_col++;
+	} if(vy == -1) {
+		m_origin.m_row--;
+	} else if(vy == 1) {
+		m_origin.m_row++;
+	}
+}