Files @ r23483:3733e6b8ff17
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Location: cpp/openttd-patchpack/source/src/sprite.cpp

Patric Stout
Remove: ENABLE_NETWORK switch

This switch has been a pain for years. Often disabling broke
compilation, as no developer compiles OpenTTD without, neither do
any of our official binaries.

Additionaly, it has grown so hugely in our codebase, that it
clearly shows that the current solution was a poor one. 350+
instances of "#ifdef ENABLE_NETWORK" were in the code, of which
only ~30 in the networking code itself. The rest were all around
the code to do the right thing, from GUI to NewGRF.

A more proper solution would be to stub all the functions, and
make sure the rest of the code can simply assume network is
available. This was also partially done, and most variables were
correct if networking was disabled. Despite that, often the #ifdefs
were still used.

With the recent removal of DOS, there is also no platform anymore
which we support where networking isn't working out-of-the-box.

All in all, it is time to remove the ENABLE_NETWORK switch. No
replacement is planned, but if you feel we really need this option,
we welcome any Pull Request which implements this in a way that
doesn't crawl through the code like this diff shows we used to.
/* $Id$ */

/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file sprite.cpp Handling of sprites */

#include "stdafx.h"
#include "sprite.h"
#include "viewport_func.h"
#include "landscape.h"
#include "spritecache.h"
#include "zoom_func.h"

#include "safeguards.h"


/**
 * Draws a tile sprite sequence.
 * @param ti The tile to draw on
 * @param dts Sprite and subsprites to draw
 * @param to The transparency bit that toggles drawing of these sprites
 * @param orig_offset Sprite-Offset for original sprites
 * @param newgrf_offset Sprite-Offset for NewGRF defined sprites
 * @param default_palette The default recolour sprite to use (typically company colour)
 * @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
 */
void DrawCommonTileSeq(const TileInfo *ti, const DrawTileSprites *dts, TransparencyOption to, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
{
	bool parent_sprite_encountered = false;
	const DrawTileSeqStruct *dtss;
	bool skip_childs = false;
	foreach_draw_tile_seq(dtss, dts->seq) {
		SpriteID image = dtss->image.sprite;
		PaletteID pal = dtss->image.pal;

		if (skip_childs) {
			if (!dtss->IsParentSprite()) continue;
			skip_childs = false;
		}

		/* TTD sprite 0 means no sprite */
		if ((GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) ||
				(IsInvisibilitySet(to) && !HasBit(image, SPRITE_MODIFIER_OPAQUE))) {
			skip_childs = dtss->IsParentSprite();
			continue;
		}

		image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
		if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;

		pal = SpriteLayoutPaletteTransform(image, pal, default_palette);

		if (dtss->IsParentSprite()) {
			parent_sprite_encountered = true;
			AddSortableSpriteToDraw(
				image, pal,
				ti->x + dtss->delta_x, ti->y + dtss->delta_y,
				dtss->size_x, dtss->size_y,
				dtss->size_z, ti->z + dtss->delta_z,
				!HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to)
			);
		} else {
			int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
			int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
			bool transparent = !HasBit(image, SPRITE_MODIFIER_OPAQUE) && IsTransparencySet(to);
			if (parent_sprite_encountered) {
				AddChildSpriteScreen(image, pal, offs_x, offs_y, transparent);
			} else {
				if (transparent) {
					SetBit(image, PALETTE_MODIFIER_TRANSPARENT);
					pal = PALETTE_TO_TRANSPARENT;
				}
				DrawGroundSprite(image, pal, NULL, offs_x, offs_y);
			}
		}
	}
}

/**
 * Draws a tile sprite sequence in the GUI
 * @param x X position to draw to
 * @param y Y position to draw to
 * @param dts Sprite and subsprites to draw
 * @param orig_offset Sprite-Offset for original sprites
 * @param newgrf_offset Sprite-Offset for NewGRF defined sprites
 * @param default_palette The default recolour sprite to use (typically company colour)
 * @param child_offset_is_unsigned Whether child sprite offsets are interpreted signed or unsigned
 */
void DrawCommonTileSeqInGUI(int x, int y, const DrawTileSprites *dts, int32 orig_offset, uint32 newgrf_offset, PaletteID default_palette, bool child_offset_is_unsigned)
{
	const DrawTileSeqStruct *dtss;
	Point child_offset = {0, 0};

	bool skip_childs = false;
	foreach_draw_tile_seq(dtss, dts->seq) {
		SpriteID image = dtss->image.sprite;
		PaletteID pal = dtss->image.pal;

		if (skip_childs) {
			if (!dtss->IsParentSprite()) continue;
			skip_childs = false;
		}

		/* TTD sprite 0 means no sprite */
		if (GB(image, 0, SPRITE_WIDTH) == 0 && !HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE)) {
			skip_childs = dtss->IsParentSprite();
			continue;
		}

		image += (HasBit(image, SPRITE_MODIFIER_CUSTOM_SPRITE) ? newgrf_offset : orig_offset);
		if (HasBit(pal, SPRITE_MODIFIER_CUSTOM_SPRITE)) pal += newgrf_offset;

		pal = SpriteLayoutPaletteTransform(image, pal, default_palette);

		if (dtss->IsParentSprite()) {
			Point pt = RemapCoords(dtss->delta_x, dtss->delta_y, dtss->delta_z);
			DrawSprite(image, pal, x + UnScaleGUI(pt.x), y + UnScaleGUI(pt.y));

			const Sprite *spr = GetSprite(image & SPRITE_MASK, ST_NORMAL);
			child_offset.x = UnScaleGUI(pt.x + spr->x_offs);
			child_offset.y = UnScaleGUI(pt.y + spr->y_offs);
		} else {
			int offs_x = child_offset_is_unsigned ? (uint8)dtss->delta_x : dtss->delta_x;
			int offs_y = child_offset_is_unsigned ? (uint8)dtss->delta_y : dtss->delta_y;
			DrawSprite(image, pal, x + child_offset.x + ScaleGUITrad(offs_x), y + child_offset.y + ScaleGUITrad(offs_y));
		}
	}
}