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Make m_index uint16 again and replace magic -1 number.

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This commit is contained in:
King_DuckZ 2016-10-30 23:41:14 +01:00
parent 5da4cef4a5
commit 458ec6bcce
2 changed files with 11 additions and 10 deletions
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17
src/tileiterator.cpp
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@ -7,6 +7,7 @@
namespace curry {
namespace {
const uint16_t g_invalid_index = 0xFFFF;
vec2i first_col_starting_pixel (const vec2i& parViewportPos, const vec2i& parTileSize) a_pure;
vec2i first_col_starting_pixel (const vec2i& parViewportPos, const vec2i& parTileSize) {
@ -22,25 +23,25 @@ namespace curry {
TileIterator::TileIterator (WorldViewport* parViewport, bool parEnd) :
m_viewport(parViewport),
m_index(parEnd ? -1 : 0)
m_index(parEnd ? g_invalid_index : 0)
{
assert(m_viewport);
m_pixel_pos = first_col_starting_pixel(
static_cast<vec2i>(m_viewport->position()),
vector_cast<vec2i>(m_viewport->position()),
m_viewport->world()->tile_size()
);
}
void TileIterator::increment() {
assert(m_index != vec2i(-1));
assert(m_index != vec2i(g_invalid_index));
const WorldGrid& world = *m_viewport->world();
vec2i tile_size(world.tile_size());
auto first_tile_pos = first_col_starting_pixel(
static_cast<vec2i>(m_viewport->position()),
vector_cast<vec2i>(m_viewport->position()),
m_viewport->world()->tile_size()
);
vec2i pos(tile_size * m_index + first_tile_pos);
vec2i pos(tile_size * vector_cast<vec2i>(m_index) + first_tile_pos);
assert(pos.x() > -tile_size.x() and pos.x() < m_viewport->size().x());
assert(pos.y() > -tile_size.y() and pos.y() < m_viewport->size().y());
@ -55,15 +56,15 @@ namespace curry {
m_pixel_pos.y() += tile_size.y();
}
else {
m_index = vec2i(-1);
m_index = vec2us(g_invalid_index);
}
//std::cout << "got index " << m_index << " pixel " <<
//m_index * tile_size - m_viewport->position() << '\n';
m_pixel_pos = tile_size * m_index + first_tile_pos;
m_pixel_pos = tile_size * vector_cast<vec2i>(m_index) + first_tile_pos;
}
ScreenTile TileIterator::dereference() const {
auto index = static_cast<vec2us>(m_index);
auto index = vector_cast<vec2us>(m_index);
return ScreenTile {
m_viewport->world()->tile(index),
m_pixel_pos

4
src/tileiterator.hpp
View file

@ -24,8 +24,8 @@ namespace curry {
void increment();
bool equal (const TileIterator& parOther) const;
WorldViewport* m_viewport;
vec2i m_index;
vec2i m_pixel_pos;
WorldViewport* m_viewport;
vec2us m_index;
};
} //namespace curry