cpp/openttd-patchpack/source Files · src/ship_gui.cpp

Files @ r25014:e1f1bf3a062e

Branch filter:

Location: cpp/openttd-patchpack/source/src/ship_gui.cpp

r25014:e1f1bf3a062e 2.9 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Add: [Video] move GameLoop into its own thread

This allows drawing to happen while the GameLoop is doing an
iteration too.

Sadly, not much drawing currently can be done while the GameLoop
is running, as for example PollEvent() or UpdateWindows() can
influence the game-state. As such, they first need to acquire a
lock on the game-state before they can be called.

Currently, the main advantage is the time spend in Paint(), which
for non-OpenGL drivers can be a few milliseconds. For OpenGL this
is more like 0.05 milliseconds; in these instances this change
doesn't add any benefits for now.

This is an alternative to the former "draw-thread", which moved
the drawing in a thread for some OSes. It has similar performance
gain as this does, although this implementation allows for more
finer control over what suffers when the GameLoop takes too
long: drawing or the next GameLoop. For now they both suffer
equally.

/*
 * 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 ship_gui.cpp GUI for ships. */

#include "stdafx.h"
#include "vehicle_base.h"
#include "window_gui.h"
#include "gfx_func.h"
#include "vehicle_gui.h"
#include "strings_func.h"
#include "vehicle_func.h"
#include "spritecache.h"
#include "zoom_func.h"

#include "table/strings.h"

#include "safeguards.h"

/**
 * Draws an image of a ship
 * @param v         Front vehicle
 * @param left      The minimum horizontal position
 * @param right     The maximum horizontal position
 * @param y         Vertical position to draw at
 * @param selection Selected vehicle to draw a frame around
 */
void DrawShipImage(const Vehicle *v, int left, int right, int y, VehicleID selection, EngineImageType image_type)
{
	bool rtl = _current_text_dir == TD_RTL;

	VehicleSpriteSeq seq;
	v->GetImage(rtl ? DIR_E : DIR_W, image_type, &seq);

	Rect rect;
	seq.GetBounds(&rect);

	int width = UnScaleGUI(rect.right - rect.left + 1);
	int x_offs = UnScaleGUI(rect.left);
	int x = rtl ? right - width - x_offs : left - x_offs;

	y += ScaleGUITrad(10);
	seq.Draw(x, y, GetVehiclePalette(v), false);

	if (v->index == selection) {
		x += x_offs;
		y += UnScaleGUI(rect.top);
		DrawFrameRect(x - 1, y - 1, x + width + 1, y + UnScaleGUI(rect.bottom - rect.top + 1) + 1, COLOUR_WHITE, FR_BORDERONLY);
	}
}

/**
 * Draw the details for the given vehicle at the given position
 *
 * @param v     current vehicle
 * @param left  The left most coordinate to draw
 * @param right The right most coordinate to draw
 * @param y     The y coordinate
 */
void DrawShipDetails(const Vehicle *v, int left, int right, int y)
{
	SetDParam(0, v->engine_type);
	SetDParam(1, v->build_year);
	SetDParam(2, v->value);
	DrawString(left, right, y, STR_VEHICLE_INFO_BUILT_VALUE);

	SetDParam(0, v->cargo_type);
	SetDParam(1, v->cargo_cap);
	SetDParam(4, GetCargoSubtypeText(v));
	DrawString(left, right, y + FONT_HEIGHT_NORMAL, STR_VEHICLE_INFO_CAPACITY);

	StringID str = STR_VEHICLE_DETAILS_CARGO_EMPTY;
	if (v->cargo.StoredCount() > 0) {
		SetDParam(0, v->cargo_type);
		SetDParam(1, v->cargo.StoredCount());
		SetDParam(2, v->cargo.Source());
		str = STR_VEHICLE_DETAILS_CARGO_FROM;
	}
	DrawString(left, right, y + 2 * FONT_HEIGHT_NORMAL + 1, str);

	/* Draw Transfer credits text */
	SetDParam(0, v->cargo.FeederShare());
	DrawString(left, right, y + 3 * FONT_HEIGHT_NORMAL + 3, STR_VEHICLE_INFO_FEEDER_CARGO_VALUE);
}