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#include "games/pong/Pong.hpp"
#include "games/Game.hpp"
#include "common/shapes.hpp"
#include "renderer/Renderer.hpp"
void
Pong::Start()
{
m_paddles[0].dir = NONE;
m_paddles[0].y = 1.5f;
m_paddles[1].dir = NONE;
m_paddles[1].y = 1.5f;
m_ball.circle.x = 2.0f;
m_ball.circle.y = 1.5f;
m_ball.circle.r = 0.1f;
m_ball.velocity.x = 1.0f;
m_ball.velocity.y = 0.0f;
m_game_status = game_resume;
}
void
Pong::ProcessEvent(SDL_Event& event)
{
switch (event.type) {
case SDL_EVENT_KEY_DOWN: {
auto key = event.key.key;
if (key == SDLK_ESCAPE) {
m_game_status = game_pause;
}
else if (key == SDLK_W) {
m_paddles[0].dir = UP;
}
else if (key == SDLK_S) {
m_paddles[0].dir = DOWN;
}
else if (key == SDLK_UP) {
m_paddles[1].dir = UP;
}
else if (key == SDLK_DOWN) {
m_paddles[1].dir = DOWN;
}
} break;
case SDL_EVENT_KEY_UP: {
auto key = event.key.key;
if (key == SDLK_W && m_paddles[0].dir == UP) {
m_paddles[0].dir = NONE;
}
else if (key == SDLK_S && m_paddles[0].dir == DOWN) {
m_paddles[0].dir = NONE;
}
else if (key == SDLK_UP && m_paddles[1].dir == UP) {
m_paddles[1].dir = NONE;
}
else if (key == SDLK_DOWN && m_paddles[1].dir == DOWN) {
m_paddles[1].dir = NONE;
}
} break;
default:;
}
}
void
Pong::FinishUpdate(float dt)
{
MoveBall(dt);
MovePaddle(m_paddles[0], dt);
MovePaddle(m_paddles[1], dt);
}
void
Pong::MovePaddle(Paddle& paddle, float dt)
{
if (paddle.dir) {
paddle.y += (float)paddle.dir * (PADDLE_SPEED * dt);
}
if (paddle.y <= 0.0f) {
paddle.y = 0.0f;
}
if (paddle.y + PADDLE_HEIGHT > 3.0f) {
paddle.y = 3.0f - PADDLE_HEIGHT;
}
}
void
Pong::MoveBall(float dt)
{
// Todo: do physics! find trajectories, find intersection, bounce off properly
m_ball.circle.x += m_ball.velocity.x * dt;
m_ball.circle.y += m_ball.velocity.y * dt;
if (m_ball.circle.x - m_ball.circle.r <= PADDLE_WIDTH) {
m_ball.circle.x = PADDLE_WIDTH + m_ball.circle.r;
m_ball.velocity.x *= -1.0f;
m_ball.velocity.y *= -1.0f;
}
if (m_ball.circle.x + m_ball.circle.r > 4.0f - PADDLE_WIDTH) {
m_ball.circle.x = 4.0f - PADDLE_WIDTH - m_ball.circle.r;
m_ball.velocity.x *= -1.0f;
m_ball.velocity.y *= -1.0f;
}
}
void
Pong::Draw()
{
Color paddle_color = {0.6f, 0.3f, 0.3f, 1.0f};
Rectangle paddle1_rect = {
0.0f,
m_paddles[0].y,
0.0f + PADDLE_WIDTH,
m_paddles[0].y + PADDLE_HEIGHT
};
Rectangle paddle2_rect = {
4.0f - PADDLE_WIDTH,
m_paddles[1].y,
4.0f,
m_paddles[1].y + PADDLE_HEIGHT
};
g_renderer.PushRectangle(paddle1_rect, paddle_color, z_layer1);
g_renderer.PushRectangle(paddle2_rect, paddle_color, z_layer1);
// Todo: draw a circle
Rectangle ball_rectangle = {
m_ball.circle.x - m_ball.circle.r,
m_ball.circle.y - m_ball.circle.r,
m_ball.circle.x + m_ball.circle.r,
m_ball.circle.y + m_ball.circle.r
};
Color ball_color = {0.3f, 0.5f, 0.3f, 1.0f};
g_renderer.PushRectangle(ball_rectangle, ball_color, z_layer1);
}
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