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Added code to wait until user presses SPACE, before starting the game. Also added code to show points

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master
Aadhavan Srinivasan 11 months ago
parent d6d6456289
commit 2940c61314
1 changed files with 83 additions and 52 deletions
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135
main.cpp
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@ -6,23 +6,25 @@
#include "math-helpers.hpp"
/* Global variables used to instantiate structs */
const int WIDTH = 1000;
const int HEIGHT = 480;
const int WIDTH = 1500;
const int HEIGHT = 600;
const int RECT_H = HEIGHT / 3;
const int RECT_W = 30;
const int PADDLE_SPEED = 8;
const int CIRC_RAD = 10;
const float BASE_BOUNCE_DEG = 30;
const float BASE_BOUNCE_DEG = 45;
const float BASE_BOUNCE_RAD = (BASE_BOUNCE_DEG / 180.0) * M_PI;
const float BASE_SPEED_COMPONENTS = 7;
const float BASE_SPEED_COMPONENTS = 15;
const float BASE_SPEED = sqrt(powf(BASE_SPEED_COMPONENTS, 2) * 2);
raylib::Vector2 changeVelocityAfterCollision(Paddle paddle, Ball ball) {
float paddle_mid_y = (paddle.getRect().y + paddle.getRect().GetHeight()) / 2.0; /* Middle y value of rectangle */
TraceLog(LOG_INFO, "\nMid y-value: %.2f", paddle_mid_y);
float ball_y = ball.pos.y; /* Y co-ordinate of ball */
float offset = paddle_mid_y - ball_y; /* Subtracting the ball coordinate will give us a value between -paddle_mid_y (represents bottom of paddle) and +paddle_mid_y (represents top of paddle) */
offset /= (paddle.getRect().GetHeight() / 2.0); /* Normalize the value, by dividing it by its magnitude. It is now a value between -1 and 1. */
offset /= (paddle.getRect().GetHeight() / 2.0); /* Normalize the value, by dividing it by its maximum magnitude. It is now a value between -1 and 1. */
TraceLog(LOG_INFO, "Offset: %.2f\n",offset);
// offset *= -1; /* Reverse the sign of the offset, so that -1 represents the top, and 1 represents the bottom */
float bounce_angle = offset * BASE_BOUNCE_RAD; /* Calculate the actual bounce angle from the base bounce angle. */
@ -36,7 +38,6 @@ raylib::Vector2 changeVelocityAfterCollision(Paddle paddle, Ball ball) {
return raylib::Vector2(new_x_vel, new_y_vel);
}
int main() {
/* Initialize window */
raylib::Window window = raylib::Window(WIDTH, HEIGHT, "Pong");
@ -44,68 +45,98 @@ int main() {
window.ClearBackground(BLACK);
SetTargetFPS(60);
SetExitKey(KEY_Q);
std::string points_str = std::string("0\t\t0");
bool game_started = false;
/* Instantiate Paddle and Ball objects */
Paddle pad1 = Paddle(10, 10, RECT_W, RECT_H);
Paddle pad2 = Paddle(window.GetWidth() - RECT_W - 10, 10, RECT_W, RECT_H);
Ball ball = Ball(window.GetWidth()/2, window.GetHeight()/2, CIRC_RAD, 5, 5);
Paddle pad1 = Paddle(10, (HEIGHT / 2) - (RECT_H / 2), RECT_W, RECT_H);
Paddle pad2 = Paddle(window.GetWidth() - RECT_W - 10, (HEIGHT / 2) - (RECT_H / 2), RECT_W, RECT_H);
Ball ball = Ball(window.GetWidth()/2, window.GetHeight()/2, CIRC_RAD, BASE_SPEED, 0);
window.BeginDrawing();
pad1.draw();
pad2.draw();
ball.draw();
pad1.draw();
pad2.draw();
ball.draw();
window.EndDrawing();
/* Main loop */
while (!window.ShouldClose()) {
/* Update paddle velocity */
if (IsKeyPressed(KEY_S)) {
pad1.velocity.y = PADDLE_SPEED; /* Set positive (downward) velocity, since (0,0) is top-left */
}
if (IsKeyPressed(KEY_W)) {
pad1.velocity.y = (-1) * PADDLE_SPEED; /* Set negative (upward) velocity */
}
if (IsKeyReleased(KEY_S) || IsKeyReleased(KEY_W)) {
pad1.velocity.y = 0;
}
if (IsKeyPressed(KEY_UP)) {
pad2.velocity.y = (-1) * PADDLE_SPEED;
}
if (IsKeyPressed(KEY_DOWN)) {
pad2.velocity.y = PADDLE_SPEED;
}
if (IsKeyReleased(KEY_UP) || IsKeyReleased(KEY_DOWN)) {
pad2.velocity.y = 0;
if (!game_started) {
if (IsKeyDown(KEY_SPACE)) {
game_started = true;
}
}
/* Update ball velocity based on collision detection */
if (pad1.getRect().CheckCollision(ball.pos, ball.radius)) { /* Collision with paddle 1 */
ball.pos.x = pad1.getRect().x + pad1.getRect().GetWidth() + ball.radius + 1; /* Ensuring that the ball doesn't get stuck inside the paddle */
ball.vel = changeVelocityAfterCollision(pad1, ball);
if (game_started) {
/* Update paddle velocity */
if (IsKeyPressed(KEY_S)) {
pad1.velocity.y = PADDLE_SPEED; /* Set positive (downward) velocity, since (0,0) is top-left */
}
if (IsKeyPressed(KEY_W)) {
pad1.velocity.y = (-1) * PADDLE_SPEED; /* Set negative (upward) velocity */
}
if (IsKeyReleased(KEY_S) || IsKeyReleased(KEY_W)) {
pad1.velocity.y = 0;
}
if (IsKeyPressed(KEY_UP)) {
pad2.velocity.y = (-1) * PADDLE_SPEED;
}
if (IsKeyPressed(KEY_DOWN)) {
pad2.velocity.y = PADDLE_SPEED;
}
if (IsKeyReleased(KEY_UP) || IsKeyReleased(KEY_DOWN)) {
pad2.velocity.y = 0;
}
/* Update ball velocity based on collision detection */
if (pad1.getRect().CheckCollision(ball.pos, ball.radius)) { /* Collision with paddle 1 */
ball.pos.x = pad1.getRect().x + pad1.getRect().GetWidth() + ball.radius + 1; /* Ensuring that the ball doesn't get stuck inside the paddle */
ball.vel = changeVelocityAfterCollision(pad1, ball);
}
if (pad2.getRect().CheckCollision(ball.pos, ball.radius)) { /* Collision with paddle 2 */
ball.pos.x = pad2.getRect().x - ball.radius - 1;
ball.vel = changeVelocityAfterCollision(pad2, ball);
}
if (ball.pos.x + ball.radius >= window.GetWidth()) { /* Collision with right wall */
pad1.incrementPoints();
game_started = false;
ball.reset();
pad1.reset();
pad2.reset();
}
if (ball.pos.x - ball.radius <= 0) { /* Collision with left wall */
pad2.incrementPoints();
game_started = false;
ball.reset();
pad1.reset();
pad2.reset();
}
if (ball.pos.y - ball.radius <= 0) { /* Collision with top wall */
ball.pos.y = ball.radius + 1;
ball.vel.y = ball.vel.y * -1;
}
if (ball.pos.y + ball.radius >= window.GetHeight()) { /* Collision with bottom wall */
ball.pos.y = HEIGHT - ball.radius - 1;
ball.vel.y = ball.vel.y * -1;
}
/* Update positions based on velocities */
pad1.updatePosition();
pad2.updatePosition();
ball.updatePosition();
}
if (pad2.getRect().CheckCollision(ball.pos, ball.radius)) { /* Collision with paddle 2 */
ball.pos.x = pad2.getRect().x - ball.radius - 1;
ball.vel = changeVelocityAfterCollision(pad2, ball);
}
if (ball.pos.x + ball.radius >= window.GetWidth()) { /* Collision with right wall */
pad1.incrementPoints();
ball.pos = raylib::Vector2(window.GetWidth() / 2, window.GetHeight() / 2);
}
if (ball.pos.x - ball.radius <= 0) { /* Collision with left wall */
pad2.incrementPoints();
ball.pos = raylib::Vector2(window.GetWidth() / 2, window.GetHeight() / 2);
}
if (ball.pos.y - ball.radius <= 0 || ball.pos.y + ball.radius >= window.GetHeight()) { /* Collision with top and bottom wals */
ball.vel.y = ball.vel.y * -1;
}
/* Draw objects */
window.BeginDrawing();
window.ClearBackground(BLACK);
points_str = std::to_string(pad1.getPoints()) + "\t\t" + std::to_string(pad2.getPoints());
raylib::Text::Draw( points_str, (WIDTH / 2) - 30, HEIGHT / 10, 30, raylib::Color::White() );
pad1.draw();
pad2.draw();
ball.draw();

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