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#include "ConstantVelocity.h"
#include <raylib.h>
ConstantVelocitySystem::ConstantVelocitySystem()
{
m_bullets.reserve(RESERVED);
}
void
ConstantVelocitySystem::update(const float dt)
{
const int min_height = 0 - 3 * MARGIN;
const int max_height = GetScreenHeight() + MARGIN;
const int min_width = 0 - MARGIN;
const int max_width = GetScreenWidth() + MARGIN;
auto it = m_bullets.begin();
while (it != m_bullets.end()) {
auto& bullet = *it;
bullet.position.x += bullet.velocity.x * dt;
bullet.position.y += bullet.velocity.y * dt;
const bool y_exceeded = bullet.position.y < min_height || bullet.position.y > max_height;
const bool x_exceeded = bullet.position.x < min_width || bullet.position.x > max_width;
if (y_exceeded || x_exceeded)
it = m_bullets.erase(it);
else
++it;
}
}
void
ConstantVelocitySystem::draw()
{
for (const auto& bullet : m_bullets)
DrawCircle(bullet.position.x, bullet.position.y, bullet.radius, bullet.color);
}
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