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#include "games/breakout/Breakout.hpp"
#include "common/math.hpp"
#include "games/Game.hpp"
#include "common/shapes.hpp"
#include "renderer/Renderer.hpp"
void
Breakout::Start()
{
float xmid = (3.0f / 2);
m_paddle.x = xmid - (PADDLE_WIDTH / 2);
m_paddle.dx = 0.0f;
m_ball.circle.x = xmid;
m_ball.circle.y = 2.0f;
m_ball.circle.r = 0.05f;
m_ball.dx = 0.0f;
m_ball.dy = 1.0f;
float brickmap_w = 1.00f * MAP_WIDTH;
float brickmap_h = 0.25f * MAP_HEIGHT;
float brick_w_sum = 0.80f * brickmap_w;
float brick_h_sum = 0.70f * brickmap_h;
float brick_xgap_sum = brickmap_w - brick_w_sum;
float brick_ygap_sum = brickmap_h - brick_h_sum;
float brick_w = brick_w_sum / BRICK_COLS;
float brick_h = brick_h_sum / BRICK_ROWS;
float brick_xgap = brick_xgap_sum / (BRICK_COLS+1);
float brick_ygap = brick_ygap_sum / (BRICK_ROWS+1);
float y = MAP_HEIGHT - brickmap_h;
for (uint32_t row = 0; row < BRICK_ROWS; row++) {
float x = brick_xgap;
for (uint32_t col = 0; col < BRICK_COLS; col++) {
m_bricks[row][col].x0 = x;
m_bricks[row][col].y0 = y;
m_bricks[row][col].x1 = x + brick_w;
m_bricks[row][col].y1 = y + brick_h;
x += brick_w + brick_xgap;
}
y += brick_h + brick_ygap;
}
m_game_status = game_resume;
}
void
Breakout::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_RIGHT || key == SDLK_D) {
m_paddle.dx = 1.0f;
}
else if (key == SDLK_LEFT || key == SDLK_A) {
m_paddle.dx = -1.0f;
}
else {
}
} break;
case SDL_EVENT_KEY_UP: {
auto key = event.key.key;
if (key == SDLK_RIGHT || key == SDLK_D) {
m_paddle.dx = 0.0f;
}
else if (key == SDLK_LEFT || key == SDLK_A) {
m_paddle.dx = 0.0f;
}
} break;
default:;
}
}
void
Breakout::Update(float dt)
{
MoveBall(dt);
MovePaddle(dt);
}
void
Breakout::MovePaddle(float dt)
{
float x = m_paddle.x + m_paddle.dx * dt;
if (x + PADDLE_WIDTH >= MAP_WIDTH) {
x = MAP_WIDTH - PADDLE_WIDTH;
}
if (x <= 0.0f) {
x = 0.0f;
}
m_paddle.x = x;
}
void
Breakout::MoveBall(float dt)
{
float x = m_ball.circle.x + m_ball.dx * dt;
float y = m_ball.circle.y + m_ball.dy * dt;
m_ball.circle.x = x;
m_ball.circle.y = y;
// collision walls
if (m_ball.circle.x <= 0.0f) {
m_ball.dx = std::abs(m_ball.dx);
}
if (m_ball.circle.x + m_ball.circle.r >= MAP_WIDTH) {
m_ball.dx = -std::abs(m_ball.dx);
}
if (m_ball.circle.y <= 0.0f) {
m_game_status = game_over;
}
if (m_ball.circle.y + m_ball.circle.r >= MAP_HEIGHT) {
m_ball.dy = -std::abs(m_ball.dy);
}
// collision paddle
Rectangle paddle_rect = {
m_paddle.x,
0.0f,
m_paddle.x + PADDLE_WIDTH,
PADDLE_HEIGHT
};
if (Intersect_Rectangle_Circle(paddle_rect, m_ball.circle)) {
m_ball.dy = std::abs(m_ball.dy);
}
}
void
Breakout::Draw()
{
// 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_layer2);
Color paddle_color = {0.6f, 0.3f, 0.3f, 1.0f};
Rectangle paddle_rect = {
m_paddle.x,
0.0f,
m_paddle.x + PADDLE_WIDTH,
PADDLE_HEIGHT
};
g_renderer.PushRectangle(paddle_rect, paddle_color, z_layer1);
Color brick_color = {0.5f, 0.3f, 0.3f, 1.0f};
for (uint32_t y = 0; y < BRICK_ROWS; y++) {
for (uint32_t x = 0; x < BRICK_COLS; x++) {
g_renderer.PushRectangle(m_bricks[y][x], brick_color, z_layer1);
}
}
}
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