Method draw_tile

scene/2d/tile_map_layer.cpp:2607–2671

}

void TileMapLayer::draw_tile(RID p_canvas_item, const Vector2 &p_position, const Ref<TileSet> p_tile_set, int p_atlas_source_id, const Vector2i &p_atlas_coords, int p_alternative_tile, int p_frame, const TileData *p_tile_data_override, real_t p_normalized_animation_offset) {
	ERR_FAIL_COND(p_tile_set.is_null());
	ERR_FAIL_COND(!p_tile_set->has_source(p_atlas_source_id));
	ERR_FAIL_COND(!p_tile_set->get_source(p_atlas_source_id)->has_tile(p_atlas_coords));
	ERR_FAIL_COND(!p_tile_set->get_source(p_atlas_source_id)->has_alternative_tile(p_atlas_coords, p_alternative_tile));
	TileSetSource *source = *p_tile_set->get_source(p_atlas_source_id);
	TileSetAtlasSource *atlas_source = Object::cast_to<TileSetAtlasSource>(source);
	if (atlas_source) {
		// Check for the frame.
		if (p_frame >= 0) {
			ERR_FAIL_INDEX(p_frame, atlas_source->get_tile_animation_frames_count(p_atlas_coords));
		}

		// Get the texture.
		Ref<Texture2D> tex = atlas_source->get_runtime_texture();
		if (tex.is_null()) {
			return;
		}

		// Check if we are in the texture, return otherwise.
		Vector2i grid_size = atlas_source->get_atlas_grid_size();
		if (p_atlas_coords.x >= grid_size.x || p_atlas_coords.y >= grid_size.y) {
			return;
		}

		// Get tile data.
		const TileData *tile_data = p_tile_data_override ? p_tile_data_override : atlas_source->get_tile_data(p_atlas_coords, p_alternative_tile);

		// Get the tile modulation.
		Color modulate = tile_data->get_modulate();

		// Compute the dest rect.
		Rect2 dest_rect;
		bool transpose;
		compute_transformed_tile_dest_rect(dest_rect, transpose, p_position, atlas_source->get_runtime_tile_texture_region(p_atlas_coords).size, tile_data, p_alternative_tile);

		// Draw the tile.
		if (p_frame >= 0) {
			Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, p_frame);
			tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());
		} else if (atlas_source->get_tile_animation_frames_count(p_atlas_coords) == 1) {
			Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, 0);
			tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());
		} else {
			real_t speed = atlas_source->get_tile_animation_speed(p_atlas_coords);
			real_t animation_duration = atlas_source->get_tile_animation_total_duration(p_atlas_coords) / speed;
			real_t animation_offset = p_normalized_animation_offset * animation_duration;
			// Accumulate durations unaffected by the speed to avoid accumulating floating point division errors.
			// Aka do `sum(duration[i]) / speed` instead of `sum(duration[i] / speed)`.
			real_t time_unscaled = 0.0;
			for (int frame = 0; frame < atlas_source->get_tile_animation_frames_count(p_atlas_coords); frame++) {
				real_t frame_duration_unscaled = atlas_source->get_tile_animation_frame_duration(p_atlas_coords, frame);
				real_t slice_start = time_unscaled / speed;
				real_t slice_end = (time_unscaled + frame_duration_unscaled) / speed;
				RenderingServer::get_singleton()->canvas_item_add_animation_slice(p_canvas_item, animation_duration, slice_start, slice_end, animation_offset);

				Rect2i source_rect = atlas_source->get_runtime_tile_texture_region(p_atlas_coords, frame);
				tex->draw_rect_region(p_canvas_item, dest_rect, source_rect, modulate, transpose, p_tile_set->is_uv_clipping());