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@ r24755:9b2ef076754d
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Location: cpp/openttd-patchpack/source/src/aircraft_gui.cpp
r24755:9b2ef076754d
3.9 KiB
text/x-c
Codechange: Don't use cpp_offsetof in the save/load code.
Many of the member variables that are used in save/load are inside types
that are not standard layout types. Using pointer arithmetics to determine
addresses of members inside types that are not standard layout is generally
undefined behaviour. If we'd use C++17, it is conditionally supported, which means
each compiler may or may not support it. And even then using it for individual
array elements is syntactically not supported the the standard offsetof function.
Unfortunately, the trickery employed for saving linkgraph settings causes quite some
clutter in the settings ini files.
Many of the member variables that are used in save/load are inside types
that are not standard layout types. Using pointer arithmetics to determine
addresses of members inside types that are not standard layout is generally
undefined behaviour. If we'd use C++17, it is conditionally supported, which means
each compiler may or may not support it. And even then using it for individual
array elements is syntactically not supported the the standard offsetof function.
Unfortunately, the trickery employed for saving linkgraph settings causes quite some
clutter in the settings ini files.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | /*
* 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 aircraft_gui.cpp The GUI of aircraft. */
#include "stdafx.h"
#include "aircraft.h"
#include "vehicle_gui.h"
#include "newgrf_engine.h"
#include "strings_func.h"
#include "vehicle_func.h"
#include "window_gui.h"
#include "spritecache.h"
#include "zoom_func.h"
#include "table/strings.h"
#include "safeguards.h"
/**
* 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 DrawAircraftDetails(const Aircraft *v, int left, int right, int y)
{
int y_offset = (v->Next()->cargo_cap != 0) ? -(FONT_HEIGHT_NORMAL + 1): 0;
Money feeder_share = 0;
for (const Aircraft *u = v; u != nullptr; u = u->Next()) {
if (u->IsNormalAircraft()) {
SetDParam(0, u->engine_type);
SetDParam(1, u->build_year);
SetDParam(2, u->value);
DrawString(left, right, y, STR_VEHICLE_INFO_BUILT_VALUE);
SetDParam(0, u->cargo_type);
SetDParam(1, u->cargo_cap);
SetDParam(2, u->Next()->cargo_type);
SetDParam(3, u->Next()->cargo_cap);
SetDParam(4, GetCargoSubtypeText(u));
DrawString(left, right, y + FONT_HEIGHT_NORMAL, (u->Next()->cargo_cap != 0) ? STR_VEHICLE_INFO_CAPACITY_CAPACITY : STR_VEHICLE_INFO_CAPACITY);
}
if (u->cargo_cap != 0) {
uint cargo_count = u->cargo.StoredCount();
y_offset += FONT_HEIGHT_NORMAL + 1;
if (cargo_count != 0) {
/* Cargo names (fix pluralness) */
SetDParam(0, u->cargo_type);
SetDParam(1, cargo_count);
SetDParam(2, u->cargo.Source());
DrawString(left, right, y + 2 * FONT_HEIGHT_NORMAL + 1 + y_offset, STR_VEHICLE_DETAILS_CARGO_FROM);
feeder_share += u->cargo.FeederShare();
}
}
}
SetDParam(0, feeder_share);
DrawString(left, right, y + 3 * FONT_HEIGHT_NORMAL + 3 + y_offset, STR_VEHICLE_INFO_FEEDER_CARGO_VALUE);
}
/**
* Draws an image of an aircraft
* @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 DrawAircraftImage(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;
bool helicopter = v->subtype == AIR_HELICOPTER;
int y_offs = ScaleGUITrad(10);
int heli_offs = 0;
PaletteID pal = (v->vehstatus & VS_CRASHED) ? PALETTE_CRASH : GetVehiclePalette(v);
seq.Draw(x, y + y_offs, pal, (v->vehstatus & VS_CRASHED) != 0);
if (helicopter) {
const Aircraft *a = Aircraft::From(v);
VehicleSpriteSeq rotor_seq;
GetCustomRotorSprite(a, true, image_type, &rotor_seq);
if (!rotor_seq.IsValid()) rotor_seq.Set(SPR_ROTOR_STOPPED);
heli_offs = ScaleGUITrad(5);
rotor_seq.Draw(x, y + y_offs - heli_offs, PAL_NONE, false);
}
if (v->index == selection) {
x += x_offs;
y += UnScaleGUI(rect.top) + y_offs - heli_offs;
DrawFrameRect(x - 1, y - 1, x + width + 1, y + UnScaleGUI(rect.bottom - rect.top + 1) + heli_offs + 1, COLOUR_WHITE, FR_BORDERONLY);
}
}
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