diff options
| -rw-r--r-- | main/draw.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/main/draw.cpp b/main/draw.cpp index 2c766d31..391d3526 100644 --- a/main/draw.cpp +++ b/main/draw.cpp @@ -96,6 +96,8 @@ auto main_impl::get_draw_bounds() const noexcept -> draw_bounds pixel_to_tile(Vector2d{win[0]-1, win[1]-1}).chunk(), }; + auto center = pixel_to_tile(Vector2d{win[0]/2, win[1]/2}).chunk(); + for (auto p : list) { x0 = std::min(x0, p.x); @@ -104,8 +106,10 @@ auto main_impl::get_draw_bounds() const noexcept -> draw_bounds y1 = std::max(y1, p.y); } - const int16_t maxx = tile_shader::max_screen_tiles.x()/2 - 1, minx = -maxx, - maxy = tile_shader::max_screen_tiles.y()/2 - 1, miny = -maxy; + constexpr int16_t mx = tile_shader::max_screen_tiles.x()/(int16_t)2, + my = tile_shader::max_screen_tiles.y()/(int16_t)2; + int16_t minx = center.x - mx + 1, maxx = center.x + mx, + miny = center.y - my + 1, maxy = center.y + my; x0 = std::clamp(x0, minx, maxx); x1 = std::clamp(x1, minx, maxx); @@ -165,6 +169,9 @@ void main_impl::draw_world() noexcept const auto [minx, maxx, miny, maxy] = get_draw_bounds(); const auto sz = window_size(); + fm_debug_assert(1 + maxx - minx <= 8); + fm_debug_assert(1 + maxy - miny <= 8); + _clickable_scenery.clear(); #ifdef FM_USE_DEPTH32 framebuffer.fb.clearDepth(0); |