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Add ModifyTile16 function to handle composition of Tile16 graphics and update tile information management

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scawful
2024-11-10 15:08:00 -05:00
parent f3555b49ba
commit 3a2b2e8c37
2 changed files with 37 additions and 7 deletions
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24
src/app/gfx/tilesheet.cc
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@@ -84,6 +84,30 @@ void Tilesheet::ComposeTile16(const std::vector<uint8_t>& graphics_buffer,
num_tiles_++;
}
void Tilesheet::ModifyTile16(const std::vector<uint8_t>& graphics_buffer,
const TileInfo& top_left,
const TileInfo& top_right,
const TileInfo& bottom_left,
const TileInfo& bottom_right, int tile_id,
int sheet_offset) {
sheet_offset_ = sheet_offset;
// Calculate the base position for this Tile16 in the full-size bitmap
int tiles_per_row = bitmap_->width() / tile_width_;
int tile16_row = tile_id / tiles_per_row;
int tile16_column = tile_id % tiles_per_row;
int base_x = tile16_column * tile_width_;
int base_y = tile16_row * tile_height_;
// Compose and place each part of the Tile16
ComposeAndPlaceTilePart(graphics_buffer, top_left, base_x, base_y);
ComposeAndPlaceTilePart(graphics_buffer, top_right, base_x + 8, base_y);
ComposeAndPlaceTilePart(graphics_buffer, bottom_left, base_x, base_y + 8);
ComposeAndPlaceTilePart(graphics_buffer, bottom_right, base_x + 8,
base_y + 8);
tile_info_[tile_id] = {top_left, top_right, bottom_left, bottom_right};
}
void Tilesheet::ComposeAndPlaceTilePart(
const std::vector<uint8_t>& graphics_buffer, const TileInfo& tile_info,
int base_x, int base_y) {