summaryrefslogtreecommitdiff
path: root/src/bridge_gui.cpp
blob: e64fcd8ff7a02eec0ab4eff73ef7407596959f57 (plain)
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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
/* $Id$ */

/*
 * 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 bridge_gui.cpp Graphical user interface for bridge construction */

#include "stdafx.h"
#include "gui.h"
#include "window_gui.h"
#include "command_func.h"
#include "economy_func.h"
#include "bridge.h"
#include "strings_func.h"
#include "window_func.h"
#include "sound_func.h"
#include "gfx_func.h"
#include "tunnelbridge.h"
#include "sortlist_type.h"
#include "widgets/dropdown_func.h"

#include "table/strings.h"

/** The type of the last built rail bridge */
static BridgeType _last_railbridge_type = 0;
/** The type of the last built road bridge */
static BridgeType _last_roadbridge_type = 0;

/**
 * Carriage for the data we need if we want to build a bridge
 */
struct BuildBridgeData {
	BridgeType index;
	const BridgeSpec *spec;
	Money cost;
};

typedef GUIList<BuildBridgeData> GUIBridgeList;

/**
 * Callback executed after a build Bridge CMD has been called
 *
 * @param success True if the build succeded
 * @param tile The tile where the command has been executed
 * @param p1 not used
 * @param p2 not used
 */
void CcBuildBridge(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	if (success) SndPlayTileFx(SND_27_BLACKSMITH_ANVIL, tile);
}

/* Names of the build bridge selection window */
enum BuildBridgeSelectionWidgets {
	BBSW_CAPTION,
	BBSW_DROPDOWN_ORDER,
	BBSW_DROPDOWN_CRITERIA,
	BBSW_BRIDGE_LIST,
	BBSW_SCROLLBAR,
};

class BuildBridgeWindow : public Window {
private:
	/* Runtime saved values */
	static uint16 last_size;
	static Listing last_sorting;

	/* Constants for sorting the bridges */
	static const StringID sorter_names[];
	static GUIBridgeList::SortFunction * const sorter_funcs[];

	/* Internal variables */
	TileIndex start_tile;
	TileIndex end_tile;
	uint32 type;
	GUIBridgeList *bridges;
	int bridgetext_offset; ///< Horizontal offset of the text describing the bridge properties in #BBSW_BRIDGE_LIST relative to the left edge.

	/** Sort the bridges by their index */
	static int CDECL BridgeIndexSorter(const BuildBridgeData *a, const BuildBridgeData *b)
	{
		return a->index - b->index;
	}

	/** Sort the bridges by their price */
	static int CDECL BridgePriceSorter(const BuildBridgeData *a, const BuildBridgeData *b)
	{
		return a->cost - b->cost;
	}

	/** Sort the bridges by their maximum speed */
	static int CDECL BridgeSpeedSorter(const BuildBridgeData *a, const BuildBridgeData *b)
	{
		return a->spec->speed - b->spec->speed;
	}

	void BuildBridge(uint8 i)
	{
		switch ((TransportType)(this->type >> 15)) {
			case TRANSPORT_RAIL: _last_railbridge_type = this->bridges->Get(i)->index; break;
			case TRANSPORT_ROAD: _last_roadbridge_type = this->bridges->Get(i)->index; break;
			default: break;
		}
		DoCommandP(this->end_tile, this->start_tile, this->type | this->bridges->Get(i)->index,
					CMD_BUILD_BRIDGE | CMD_MSG(STR_ERROR_CAN_T_BUILD_BRIDGE_HERE), CcBuildBridge);
	}

	/** Sort the builable bridges */
	void SortBridgeList()
	{
		this->bridges->Sort();

		/* Display the current sort variant */
		this->GetWidget<NWidgetCore>(BBSW_DROPDOWN_CRITERIA)->widget_data = this->sorter_names[this->bridges->SortType()];

		/* Set the modified widgets dirty */
		this->SetWidgetDirty(BBSW_DROPDOWN_CRITERIA);
		this->SetWidgetDirty(BBSW_BRIDGE_LIST);
	}

public:
	BuildBridgeWindow(const WindowDesc *desc, TileIndex start, TileIndex end, uint32 br_type, GUIBridgeList *bl) : Window(),
		start_tile(start),
		end_tile(end),
		type(br_type),
		bridges(bl)
	{
		this->CreateNestedTree(desc);
		/* Change the data, or the caption of the gui. Set it to road or rail, accordingly. */
		this->GetWidget<NWidgetCore>(BBSW_CAPTION)->widget_data = (GB(this->type, 15, 2) == TRANSPORT_ROAD) ? STR_SELECT_ROAD_BRIDGE_CAPTION : STR_SELECT_RAIL_BRIDGE_CAPTION;
		this->FinishInitNested(desc, GB(br_type, 15, 2)); // Initializes 'this->bridgetext_offset'.

		this->parent = FindWindowById(WC_BUILD_TOOLBAR, GB(this->type, 15, 2));
		this->bridges->SetListing(this->last_sorting);
		this->bridges->SetSortFuncs(this->sorter_funcs);
		this->bridges->NeedResort();
		this->SortBridgeList();

		this->vscroll.SetCount(bl->Length());
		if (this->last_size < this->vscroll.GetCapacity()) this->last_size = this->vscroll.GetCapacity();
		if (this->last_size > this->vscroll.GetCount()) this->last_size = this->vscroll.GetCount();
		/* Resize the bridge selection window if we used a bigger one the last time. */
		if (this->last_size > this->vscroll.GetCapacity()) {
			ResizeWindow(this, 0, (this->last_size - this->vscroll.GetCapacity()) * this->resize.step_height);
		}
		this->GetWidget<NWidgetCore>(BBSW_BRIDGE_LIST)->widget_data = (this->vscroll.GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);
	}

	~BuildBridgeWindow()
	{
		this->last_sorting = this->bridges->GetListing();

		delete bridges;
	}

	virtual void OnPaint()
	{
		this->DrawWidgets();
	}

	virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
	{
		switch (widget) {
			case BBSW_DROPDOWN_ORDER: {
				Dimension d = GetStringBoundingBox(this->GetWidget<NWidgetCore>(widget)->widget_data);
				d.width += padding.width + WD_SORTBUTTON_ARROW_WIDTH * 2; // Doubled since the word is centered, also looks nice.
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}
			case BBSW_DROPDOWN_CRITERIA: {
				Dimension d = {0, 0};
				for (const StringID *str = this->sorter_names; *str != INVALID_STRING_ID; str++) {
					d = maxdim(d, GetStringBoundingBox(*str));
				}
				d.width += padding.width;
				d.height += padding.height;
				*size = maxdim(*size, d);
				break;
			}
			case BBSW_BRIDGE_LIST: {
				Dimension sprite_dim = {0, 0}; // Biggest bridge sprite dimension
				Dimension text_dim   = {0, 0}; // Biggest text dimension
				for (int i = 0; i < (int)this->bridges->Length(); i++) {
					const BridgeSpec *b = this->bridges->Get(i)->spec;
					sprite_dim = maxdim(sprite_dim, GetSpriteSize(b->sprite));

					SetDParam(2, this->bridges->Get(i)->cost);
					SetDParam(1, b->speed);
					SetDParam(0, b->material);
					text_dim = maxdim(text_dim, GetStringBoundingBox(STR_SELECT_BRIDGE_INFO));
				}
				sprite_dim.height++; // Sprite is rendered one pixel down in the matrix field.
				text_dim.height++; // Allowing the bottom row pixels to be rendered on the edge of the matrix field.
				resize->height = max(sprite_dim.height, text_dim.height) + 2; // Max of both sizes + account for matrix edges.

				this->bridgetext_offset = WD_MATRIX_LEFT + sprite_dim.width + 1; // Left edge of text, 1 pixel distance from the sprite.
				size->width = this->bridgetext_offset + text_dim.width + WD_MATRIX_RIGHT;
				size->height = 4 * resize->height; // Smallest bridge gui is 4 entries high in the matrix.
				break;
			}
		}
	}

	virtual void DrawWidget(const Rect &r, int widget) const
	{
		switch (widget) {
			case BBSW_DROPDOWN_ORDER:
				this->DrawSortButtonState(widget, this->bridges->IsDescSortOrder() ? SBS_DOWN : SBS_UP);
				break;

			case BBSW_BRIDGE_LIST: {
				uint y = r.top;
				for (int i = this->vscroll.GetPosition(); this->vscroll.IsVisible(i) && i < (int)this->bridges->Length(); i++) {
					const BridgeSpec *b = this->bridges->Get(i)->spec;

					SetDParam(2, this->bridges->Get(i)->cost);
					SetDParam(1, b->speed);
					SetDParam(0, b->material);

					DrawSprite(b->sprite, b->pal, r.left + WD_MATRIX_LEFT, y + this->resize.step_height - 1 - GetSpriteSize(b->sprite).height);
					DrawStringMultiLine(r.left + this->bridgetext_offset, r.right, y + 2, y + this->resize.step_height, STR_SELECT_BRIDGE_INFO);
					y += this->resize.step_height;
				}
				break;
			}
		}
	}

	virtual EventState OnKeyPress(uint16 key, uint16 keycode)
	{
		const uint8 i = keycode - '1';
		if (i < 9 && i < this->bridges->Length()) {
			/* Build the requested bridge */
			this->BuildBridge(i);
			delete this;
			return ES_HANDLED;
		}
		return ES_NOT_HANDLED;
	}

	virtual void OnClick(Point pt, int widget)
	{
		switch (widget) {
			default: break;
			case BBSW_BRIDGE_LIST: {
				uint i = ((int)pt.y - this->GetWidget<NWidgetBase>(BBSW_BRIDGE_LIST)->pos_y) / this->resize.step_height;
				if (i < this->vscroll.GetCapacity()) {
					i += this->vscroll.GetPosition();
					if (i < this->bridges->Length()) {
						this->BuildBridge(i);
						delete this;
					}
				}
			} break;

			case BBSW_DROPDOWN_ORDER:
				this->bridges->ToggleSortOrder();
				this->SetDirty();
				break;

			case BBSW_DROPDOWN_CRITERIA:
				ShowDropDownMenu(this, this->sorter_names, this->bridges->SortType(), BBSW_DROPDOWN_CRITERIA, 0, 0);
				break;
		}
	}

	virtual void OnDropdownSelect(int widget, int index)
	{
		if (widget == BBSW_DROPDOWN_CRITERIA && this->bridges->SortType() != index) {
			this->bridges->SetSortType(index);

			this->SortBridgeList();
		}
	}

	virtual void OnResize()
	{
		this->vscroll.SetCapacityFromWidget(this, BBSW_BRIDGE_LIST);
		this->GetWidget<NWidgetCore>(BBSW_BRIDGE_LIST)->widget_data = (this->vscroll.GetCapacity() << MAT_ROW_START) + (1 << MAT_COL_START);

		this->last_size = max(this->vscroll.GetCapacity(), this->last_size);
	}
};

/* Set the default size of the Build Bridge Window */
uint16 BuildBridgeWindow::last_size = 4;
/* Set the default sorting for the bridges */
Listing BuildBridgeWindow::last_sorting = {false, 0};

/* Availible bridge sorting functions */
GUIBridgeList::SortFunction * const BuildBridgeWindow::sorter_funcs[] = {
	&BridgeIndexSorter,
	&BridgePriceSorter,
	&BridgeSpeedSorter
};

/* Names of the sorting functions */
const StringID BuildBridgeWindow::sorter_names[] = {
	STR_SORT_BY_NUMBER,
	STR_SORT_BY_COST,
	STR_SORT_BY_MAX_SPEED,
	INVALID_STRING_ID
};

static const NWidgetPart _nested_build_bridge_widgets[] = {
	/* Header */
	NWidget(NWID_HORIZONTAL),
		NWidget(WWT_CLOSEBOX, COLOUR_DARK_GREEN),
		NWidget(WWT_CAPTION, COLOUR_DARK_GREEN, BBSW_CAPTION), SetDataTip(STR_SELECT_RAIL_BRIDGE_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
	EndContainer(),

	NWidget(NWID_HORIZONTAL),
		NWidget(NWID_VERTICAL),
			/* Sort order + criteria buttons */
			NWidget(NWID_HORIZONTAL),
				NWidget(WWT_TEXTBTN, COLOUR_DARK_GREEN, BBSW_DROPDOWN_ORDER), SetFill(1, 0), SetDataTip(STR_BUTTON_SORT_BY, STR_TOOLTIP_SORT_ORDER),
				NWidget(WWT_DROPDOWN, COLOUR_DARK_GREEN, BBSW_DROPDOWN_CRITERIA), SetFill(1, 0), SetDataTip(0x0, STR_TOOLTIP_SORT_CRITERIAP),
			EndContainer(),
			/* Matrix. */
			NWidget(WWT_MATRIX, COLOUR_DARK_GREEN, BBSW_BRIDGE_LIST), SetFill(1, 0), SetResize(0, 22), SetDataTip(0x401, STR_SELECT_BRIDGE_SELECTION_TOOLTIP),
		EndContainer(),

		/* scrollbar + resize button */
		NWidget(NWID_VERTICAL),
			NWidget(WWT_SCROLLBAR, COLOUR_DARK_GREEN, BBSW_SCROLLBAR),
			NWidget(WWT_RESIZEBOX, COLOUR_DARK_GREEN),
		EndContainer(),
	EndContainer(),
};

/* Window definition for the rail bridge selection window */
static const WindowDesc _build_bridge_desc(
	WDP_AUTO, 200, 114,
	WC_BUILD_BRIDGE, WC_BUILD_TOOLBAR,
	WDF_CONSTRUCTION,
	_nested_build_bridge_widgets, lengthof(_nested_build_bridge_widgets)
);

/**
 * Prepare the data for the build a bridge window.
 *  If we can't build a bridge under the given conditions
 *  show an error message.
 *
 * @param start The start tile of the bridge
 * @param end The end tile of the bridge
 * @param transport_type The transport type
 * @param road_rail_type The road/rail type
 */
void ShowBuildBridgeWindow(TileIndex start, TileIndex end, TransportType transport_type, byte road_rail_type)
{
	DeleteWindowByClass(WC_BUILD_BRIDGE);

	/* Data type for the bridge.
	 * Bit 16,15 = transport type,
	 *     14..8 = road/rail types,
	 *      7..0 = type of bridge */
	uint32 type = (transport_type << 15) | (road_rail_type << 8);

	/* The bridge length without ramps. */
	const uint bridge_len = GetTunnelBridgeLength(start, end);

	/* If Ctrl is being pressed, check wether the last bridge built is available
	 * If so, return this bridge type. Otherwise continue normally.
	 * We store bridge types for each transport type, so we have to check for
	 * the transport type beforehand.
	 */
	BridgeType last_bridge_type = 0;
	switch (transport_type) {
		case TRANSPORT_ROAD: last_bridge_type = _last_roadbridge_type; break;
		case TRANSPORT_RAIL: last_bridge_type = _last_railbridge_type; break;
		default: break; // water ways and air routes don't have bridge types
	}
	if (_ctrl_pressed && CheckBridge_Stuff(last_bridge_type, bridge_len)) {
		DoCommandP(end, start, type | last_bridge_type, CMD_BUILD_BRIDGE | CMD_MSG(STR_ERROR_CAN_T_BUILD_BRIDGE_HERE), CcBuildBridge);
		return;
	}

	/* only query bridge building possibility once, result is the same for all bridges!
	 * returns CMD_ERROR on failure, and price on success */
	StringID errmsg = INVALID_STRING_ID;
	CommandCost ret = DoCommand(end, start, type, DC_AUTO | DC_QUERY_COST, CMD_BUILD_BRIDGE);

	GUIBridgeList *bl = NULL;
	if (CmdFailed(ret)) {
		errmsg = _error_message;
	} else {
		/* check which bridges can be built */
		const uint tot_bridgedata_len = CalcBridgeLenCostFactor(bridge_len + 2);

		bl = new GUIBridgeList();

		/* loop for all bridgetypes */
		for (BridgeType brd_type = 0; brd_type != MAX_BRIDGES; brd_type++) {
			if (CheckBridge_Stuff(brd_type, bridge_len)) {
				/* bridge is accepted, add to list */
				BuildBridgeData *item = bl->Append();
				item->index = brd_type;
				item->spec = GetBridgeSpec(brd_type);
				/* Add to terraforming & bulldozing costs the cost of the
				 * bridge itself (not computed with DC_QUERY_COST) */
				item->cost = ret.GetCost() + (((int64)tot_bridgedata_len * _price[PR_BUILD_BRIDGE] * item->spec->price) >> 8);
			}
		}
	}

	if (bl != NULL && bl->Length() != 0) {
		new BuildBridgeWindow(&_build_bridge_desc, start, end, type, bl);
	} else {
		delete bl;
		ShowErrorMessage(STR_ERROR_CAN_T_BUILD_BRIDGE_HERE, errmsg, TileX(end) * TILE_SIZE, TileY(end) * TILE_SIZE);
	}
}