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OpenTTD-patches/viewport.c
Darkvater ee27bb497c (svn r6884) -Codechange: Add strict bounds checking in string formatting system. 
The last parameter should point to the end of the buffer (eg lastof(buf))
 Courtesy of Tron.
2006-10-21 23:31:34 +00:00

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/* $Id$ */
#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "functions.h"
#include "gui.h"
#include "spritecache.h"
#include "strings.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "map.h"
#include "viewport.h"
#include "window.h"
#include "vehicle.h"
#include "station.h"
#include "gfx.h"
#include "town.h"
#include "signs.h"
#include "waypoint.h"
#include "variables.h"
#include "train.h"
#define VIEWPORT_DRAW_MEM (65536 * 2)
static bool _added_tile_sprite;
static bool _offset_ground_sprites;
/* The in-game coordiante system looks like this *
* *
* ^ Z *
* | *
* | *
* | *
* | *
* / \ *
* / \ *
* / \ *
* / \ *
* X < > Y *
*/
typedef struct StringSpriteToDraw {
uint16 string;
uint16 color;
struct StringSpriteToDraw *next;
int32 x;
int32 y;
uint32 params[3];
uint16 width;
} StringSpriteToDraw;
typedef struct TileSpriteToDraw {
uint32 image;
struct TileSpriteToDraw *next;
int32 x;
int32 y;
byte z;
} TileSpriteToDraw;
typedef struct ChildScreenSpriteToDraw {
uint32 image;
int32 x;
int32 y;
struct ChildScreenSpriteToDraw *next;
} ChildScreenSpriteToDraw;
typedef struct ParentSpriteToDraw {
uint32 image;
int32 left;
int32 top;
int32 right;
int32 bottom;
int32 xmin;
int32 ymin;
int32 xmax;
int32 ymax;
ChildScreenSpriteToDraw *child;
byte unk16;
byte zmin;
byte zmax;
} ParentSpriteToDraw;
// Quick hack to know how much memory to reserve when allocating from the spritelist
// to prevent a buffer overflow.
#define LARGEST_SPRITELIST_STRUCT ParentSpriteToDraw
typedef struct ViewportDrawer {
DrawPixelInfo dpi;
byte *spritelist_mem;
const byte *eof_spritelist_mem;
StringSpriteToDraw **last_string, *first_string;
TileSpriteToDraw **last_tile, *first_tile;
ChildScreenSpriteToDraw **last_child;
ParentSpriteToDraw **parent_list;
ParentSpriteToDraw * const *eof_parent_list;
byte combine_sprites;
int offs_x, offs_y; // used when drawing ground sprites relative
} ViewportDrawer;
static ViewportDrawer *_cur_vd;
TileHighlightData _thd;
static TileInfo *_cur_ti;
extern void SmallMapCenterOnCurrentPos(Window *w);
static Point MapXYZToViewport(const ViewPort *vp, uint x, uint y, uint z)
{
Point p = RemapCoords(x, y, z);
p.x -= vp->virtual_width / 2;
p.y -= vp->virtual_height / 2;
return p;
}
void AssignWindowViewport(Window *w, int x, int y,
int width, int height, uint32 follow_flags, byte zoom)
{
ViewPort *vp;
Point pt;
uint32 bit;
for (vp = _viewports, bit = 1; ; vp++, bit <<= 1) {
assert(vp != endof(_viewports));
if (vp->width == 0) break;
}
_active_viewports |= bit;
vp->left = x + w->left;
vp->top = y + w->top;
vp->width = width;
vp->height = height;
vp->zoom = zoom;
vp->virtual_width = width << zoom;
vp->virtual_height = height << zoom;
if (follow_flags & 0x80000000) {
const Vehicle *veh;
WP(w, vp_d).follow_vehicle = (VehicleID)(follow_flags & 0xFFFF);
veh = GetVehicle(WP(w, vp_d).follow_vehicle);
pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
} else {
uint x = TileX(follow_flags) * TILE_SIZE;
uint y = TileY(follow_flags) * TILE_SIZE;
WP(w, vp_d).follow_vehicle = INVALID_VEHICLE;
pt = MapXYZToViewport(vp, x, y, GetSlopeZ(x, y));
}
WP(w, vp_d).scrollpos_x = pt.x;
WP(w, vp_d).scrollpos_y = pt.y;
w->viewport = vp;
vp->virtual_left = 0;//pt.x;
vp->virtual_top = 0;//pt.y;
}
static Point _vp_move_offs;
static void DoSetViewportPosition(Window *w, int left, int top, int width, int height)
{
for (; w < _last_window; w++) {
if (left + width > w->left &&
w->left + w->width > left &&
top + height > w->top &&
w->top + w->height > top) {
if (left < w->left) {
DoSetViewportPosition(w, left, top, w->left - left, height);
DoSetViewportPosition(w, left + (w->left - left), top, width - (w->left - left), height);
return;
}
if (left + width > w->left + w->width) {
DoSetViewportPosition(w, left, top, (w->left + w->width - left), height);
DoSetViewportPosition(w, left + (w->left + w->width - left), top, width - (w->left + w->width - left) , height);
return;
}
if (top < w->top) {
DoSetViewportPosition(w, left, top, width, (w->top - top));
DoSetViewportPosition(w, left, top + (w->top - top), width, height - (w->top - top));
return;
}
if (top + height > w->top + w->height) {
DoSetViewportPosition(w, left, top, width, (w->top + w->height - top));
DoSetViewportPosition(w, left, top + (w->top + w->height - top), width , height - (w->top + w->height - top));
return;
}
return;
}
}
{
int xo = _vp_move_offs.x;
int yo = _vp_move_offs.y;
if (abs(xo) >= width || abs(yo) >= height) {
/* fully_outside */
RedrawScreenRect(left, top, left + width, top + height);
return;
}
GfxScroll(left, top, width, height, xo, yo);
if (xo > 0) {
RedrawScreenRect(left, top, xo + left, top + height);
left += xo;
width -= xo;
} else if (xo < 0) {
RedrawScreenRect(left+width+xo, top, left+width, top + height);
width += xo;
}
if (yo > 0) {
RedrawScreenRect(left, top, width+left, top + yo);
} else if (yo < 0) {
RedrawScreenRect(left, top + height + yo, width+left, top + height);
}
}
}
static void SetViewportPosition(Window *w, int x, int y)
{
ViewPort *vp = w->viewport;
int old_left = vp->virtual_left;
int old_top = vp->virtual_top;
int i;
int left, top, width, height;
vp->virtual_left = x;
vp->virtual_top = y;
old_left >>= vp->zoom;
old_top >>= vp->zoom;
x >>= vp->zoom;
y >>= vp->zoom;
old_left -= x;
old_top -= y;
if (old_top == 0 && old_left == 0) return;
_vp_move_offs.x = old_left;
_vp_move_offs.y = old_top;
left = vp->left;
top = vp->top;
width = vp->width;
height = vp->height;
if (left < 0) {
width += left;
left = 0;
}
i = left + width - _screen.width;
if (i >= 0) width -= i;
if (width > 0) {
if (top < 0) {
height += top;
top = 0;
}
i = top + height - _screen.height;
if (i >= 0) height -= i;
if (height > 0) DoSetViewportPosition(w + 1, left, top, width, height);
}
}
ViewPort *IsPtInWindowViewport(const Window *w, int x, int y)
{
ViewPort *vp = w->viewport;
if (vp != NULL &&
IS_INT_INSIDE(x, vp->left, vp->left + vp->width) &&
IS_INT_INSIDE(y, vp->top, vp->top + vp->height))
return vp;
return NULL;
}
static Point TranslateXYToTileCoord(const ViewPort *vp, int x, int y)
{
Point pt;
int a,b;
if ( (uint)(x -= vp->left) >= (uint)vp->width ||
(uint)(y -= vp->top) >= (uint)vp->height) {
Point pt = {-1, -1};
return pt;
}
x = ((x << vp->zoom) + vp->virtual_left) >> 2;
y = ((y << vp->zoom) + vp->virtual_top) >> 1;
#if !defined(NEW_ROTATION)
a = y-x;
b = y+x;
#else
a = x+y;
b = x-y;
#endif
if ((uint)a < MapMaxX() * TILE_SIZE && (uint)b < MapMaxY() * TILE_SIZE) {
uint z;
z = GetSlopeZ(a, b ) / 2;
z = GetSlopeZ(a + z, b + z) / 2;
z = GetSlopeZ(a + z, b + z) / 2;
z = GetSlopeZ(a + z, b + z) / 2;
z = GetSlopeZ(a + z, b + z) / 2;
pt.x = a + z;
pt.y = b + z;
} else {
pt.x = pt.y = -1;
}
return pt;
}
/* When used for zooming, check area below current coordinates (x,y)
* and return the tile of the zoomed out/in position (zoom_x, zoom_y)
* when you just want the tile, make x = zoom_x and y = zoom_y */
static Point GetTileFromScreenXY(int x, int y, int zoom_x, int zoom_y)
{
Window *w;
ViewPort *vp;
Point pt;
if ( (w = FindWindowFromPt(x, y)) != NULL &&
(vp = IsPtInWindowViewport(w, x, y)) != NULL)
return TranslateXYToTileCoord(vp, zoom_x, zoom_y);
pt.y = pt.x = -1;
return pt;
}
Point GetTileBelowCursor(void)
{
return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, _cursor.pos.x, _cursor.pos.y);
}
Point GetTileZoomCenterWindow(bool in, Window * w)
{
int x, y;
ViewPort * vp;
vp = w->viewport;
if (in) {
x = ((_cursor.pos.x - vp->left) >> 1) + (vp->width >> 2);
y = ((_cursor.pos.y - vp->top) >> 1) + (vp->height >> 2);
} else {
x = vp->width - (_cursor.pos.x - vp->left);
y = vp->height - (_cursor.pos.y - vp->top);
}
/* Get the tile below the cursor and center on the zoomed-out center */
return GetTileFromScreenXY(_cursor.pos.x, _cursor.pos.y, x + vp->left, y + vp->top);
}
void DrawGroundSpriteAt(uint32 image, int32 x, int32 y, byte z)
{
ViewportDrawer *vd = _cur_vd;
TileSpriteToDraw *ts;
assert((image & SPRITE_MASK) < MAX_SPRITES);
if (vd->spritelist_mem >= vd->eof_spritelist_mem) {
DEBUG(misc, 0) ("Out of sprite mem");
return;
}
ts = (TileSpriteToDraw*)vd->spritelist_mem;
vd->spritelist_mem += sizeof(TileSpriteToDraw);
ts->image = image;
ts->next = NULL;
ts->x = x;
ts->y = y;
ts->z = z;
*vd->last_tile = ts;
vd->last_tile = &ts->next;
}
void DrawGroundSprite(uint32 image)
{
if (_offset_ground_sprites) {
// offset ground sprite because of foundation?
AddChildSpriteScreen(image, _cur_vd->offs_x, _cur_vd->offs_y);
} else {
_added_tile_sprite = true;
DrawGroundSpriteAt(image, _cur_ti->x, _cur_ti->y, _cur_ti->z);
}
}
void OffsetGroundSprite(int x, int y)
{
_cur_vd->offs_x = x;
_cur_vd->offs_y = y;
_offset_ground_sprites = true;
}
static void AddCombinedSprite(uint32 image, int x, int y, byte z)
{
const ViewportDrawer *vd = _cur_vd;
Point pt = RemapCoords(x, y, z);
const Sprite* spr = GetSprite(image & SPRITE_MASK);
if (pt.x + spr->x_offs >= vd->dpi.left + vd->dpi.width ||
pt.x + spr->x_offs + spr->width <= vd->dpi.left ||
pt.y + spr->y_offs >= vd->dpi.top + vd->dpi.height ||
pt.y + spr->y_offs + spr->height <= vd->dpi.top)
return;
AddChildSpriteScreen(image, pt.x - vd->parent_list[-1]->left, pt.y - vd->parent_list[-1]->top);
}
void AddSortableSpriteToDraw(uint32 image, int x, int y, int w, int h, byte dz, byte z)
{
ViewportDrawer *vd = _cur_vd;
ParentSpriteToDraw *ps;
const Sprite *spr;
Point pt;
assert((image & SPRITE_MASK) < MAX_SPRITES);
if (vd->combine_sprites == 2) {
AddCombinedSprite(image, x, y, z);
return;
}
vd->last_child = NULL;
if (vd->spritelist_mem >= vd->eof_spritelist_mem) {
DEBUG(misc, 0) ("Out of sprite mem");
return;
}
ps = (ParentSpriteToDraw*)vd->spritelist_mem;
if (vd->parent_list >= vd->eof_parent_list) {
// This can happen rarely, mostly when you zoom out completely
// and have a lot of stuff that moves (and is added to the
// sort-list, this function). To solve it, increase
// parent_list somewhere below to a higher number.
// This can not really hurt you, it just gives some black
// spots on the screen ;)
DEBUG(misc, 0) ("Out of sprite mem (parent_list)");
return;
}
pt = RemapCoords(x, y, z);
spr = GetSprite(image & SPRITE_MASK);
if ((ps->left = (pt.x += spr->x_offs)) >= vd->dpi.left + vd->dpi.width ||
(ps->right = (pt.x + spr->width )) <= vd->dpi.left ||
(ps->top = (pt.y += spr->y_offs)) >= vd->dpi.top + vd->dpi.height ||
(ps->bottom = (pt.y + spr->height)) <= vd->dpi.top) {
return;
}
vd->spritelist_mem += sizeof(ParentSpriteToDraw);
ps->image = image;
ps->xmin = x;
ps->xmax = x + w - 1;
ps->ymin = y;
ps->ymax = y + h - 1;
ps->zmin = z;
ps->zmax = z + dz - 1;
ps->unk16 = 0;
ps->child = NULL;
vd->last_child = &ps->child;
*vd->parent_list++ = ps;
if (vd->combine_sprites == 1) vd->combine_sprites = 2;
}
void StartSpriteCombine(void)
{
_cur_vd->combine_sprites = 1;
}
void EndSpriteCombine(void)
{
_cur_vd->combine_sprites = 0;
}
void AddChildSpriteScreen(uint32 image, int x, int y)
{
ViewportDrawer *vd = _cur_vd;
ChildScreenSpriteToDraw *cs;
assert((image & SPRITE_MASK) < MAX_SPRITES);
if (vd->spritelist_mem >= vd->eof_spritelist_mem) {
DEBUG(misc, 0) ("Out of sprite mem");
return;
}
cs = (ChildScreenSpriteToDraw*)vd->spritelist_mem;
if (vd->last_child == NULL) return;
vd->spritelist_mem += sizeof(ChildScreenSpriteToDraw);
*vd->last_child = cs;
vd->last_child = &cs->next;
cs->image = image;
cs->x = x;
cs->y = y;
cs->next = NULL;
}
/* Returns a StringSpriteToDraw */
void *AddStringToDraw(int x, int y, StringID string, uint32 params_1, uint32 params_2, uint32 params_3)
{
ViewportDrawer *vd = _cur_vd;
StringSpriteToDraw *ss;
if (vd->spritelist_mem >= vd->eof_spritelist_mem) {
DEBUG(misc, 0) ("Out of sprite mem");
return NULL;
}
ss = (StringSpriteToDraw*)vd->spritelist_mem;
vd->spritelist_mem += sizeof(StringSpriteToDraw);
ss->string = string;
ss->next = NULL;
ss->x = x;
ss->y = y;
ss->params[0] = params_1;
ss->params[1] = params_2;
ss->params[2] = params_3;
ss->width = 0;
*vd->last_string = ss;
vd->last_string = &ss->next;
return ss;
}
static void DrawSelectionSprite(uint32 image, const TileInfo *ti)
{
if (_added_tile_sprite && !(_thd.drawstyle & HT_LINE)) { // draw on real ground
DrawGroundSpriteAt(image, ti->x, ti->y, ti->z + 7);
} else { // draw on top of foundation
AddSortableSpriteToDraw(image, ti->x, ti->y, 0x10, 0x10, 1, ti->z + 7);
}
}
static bool IsPartOfAutoLine(int px, int py)
{
px -= _thd.selstart.x;
py -= _thd.selstart.y;
switch (_thd.drawstyle) {
case HT_LINE | HT_DIR_X: return py == 0; // x direction
case HT_LINE | HT_DIR_Y: return px == 0; // y direction
case HT_LINE | HT_DIR_HU: return px == -py || px == -py - 16; // horizontal upper
case HT_LINE | HT_DIR_HL: return px == -py || px == -py + 16; // horizontal lower
case HT_LINE | HT_DIR_VL: return px == py || px == py + 16; // vertival left
case HT_LINE | HT_DIR_VR: return px == py || px == py - 16; // vertical right
default:
NOT_REACHED();
}
/* useless, but avoids compiler warning this way */
return 0;
}
// [direction][side]
static const int _AutorailType[6][2] = {
{ HT_DIR_X, HT_DIR_X },
{ HT_DIR_Y, HT_DIR_Y },
{ HT_DIR_HU, HT_DIR_HL },
{ HT_DIR_HL, HT_DIR_HU },
{ HT_DIR_VL, HT_DIR_VR },
{ HT_DIR_VR, HT_DIR_VL }
};
#include "table/autorail.h"
static void DrawTileSelection(const TileInfo *ti)
{
uint32 image;
// Draw a red error square?
if (_thd.redsq != 0 && _thd.redsq == ti->tile) {
DrawSelectionSprite(PALETTE_TILE_RED_PULSATING | (SPR_SELECT_TILE + _tileh_to_sprite[ti->tileh]), ti);
return;
}
// no selection active?
if (_thd.drawstyle == 0) return;
// Inside the inner area?
if (IS_INSIDE_1D(ti->x, _thd.pos.x, _thd.size.x) &&
IS_INSIDE_1D(ti->y, _thd.pos.y, _thd.size.y)) {
if (_thd.drawstyle & HT_RECT) {
image = SPR_SELECT_TILE + _tileh_to_sprite[ti->tileh];
if (_thd.make_square_red) image |= PALETTE_SEL_TILE_RED;
DrawSelectionSprite(image, ti);
} else if (_thd.drawstyle & HT_POINT) {
// Figure out the Z coordinate for the single dot.
byte z = ti->z;
if (ti->tileh & SLOPE_N) {
z += TILE_HEIGHT;
if (ti->tileh == SLOPE_STEEP_N) z += TILE_HEIGHT;
}
DrawGroundSpriteAt(_cur_dpi->zoom != 2 ? SPR_DOT : SPR_DOT_SMALL, ti->x, ti->y, z);
} else if (_thd.drawstyle & HT_RAIL /*&& _thd.place_mode == VHM_RAIL*/) {
// autorail highlight piece under cursor
uint type = _thd.drawstyle & 0xF;
assert(type <= 5);
image = SPR_AUTORAIL_BASE + _AutorailTilehSprite[ti->tileh][_AutorailType[type][0]];
if (_thd.make_square_red) image |= PALETTE_SEL_TILE_RED;
DrawSelectionSprite(image, ti);
} else if (IsPartOfAutoLine(ti->x, ti->y)) {
// autorail highlighting long line
int dir = _thd.drawstyle & ~0xF0;
uint side;
if (dir < 2) {
side = 0;
} else {
TileIndex start = TileVirtXY(_thd.selstart.x, _thd.selstart.y);
int diffx = myabs(TileX(start) - TileX(ti->tile));
int diffy = myabs(TileY(start) - TileY(ti->tile));
side = myabs(diffx - diffy);
}
image = SPR_AUTORAIL_BASE + _AutorailTilehSprite[ti->tileh][_AutorailType[dir][side]];
if (_thd.make_square_red) image |= PALETTE_SEL_TILE_RED;
DrawSelectionSprite(image, ti);
}
return;
}
// Check if it's inside the outer area?
if (_thd.outersize.x &&
_thd.size.x < _thd.size.x + _thd.outersize.x &&
IS_INSIDE_1D(ti->x, _thd.pos.x + _thd.offs.x, _thd.size.x + _thd.outersize.x) &&
IS_INSIDE_1D(ti->y, _thd.pos.y + _thd.offs.y, _thd.size.y + _thd.outersize.y)) {
// Draw a blue rect.
DrawSelectionSprite(PALETTE_SEL_TILE_BLUE | (SPR_SELECT_TILE + _tileh_to_sprite[ti->tileh]), ti);
return;
}
}
static void ViewportAddLandscape(void)
{
ViewportDrawer *vd = _cur_vd;
int x, y, width, height;
TileInfo ti;
bool direction;
_cur_ti = &ti;
// Transform into tile coordinates and round to closest full tile
#if !defined(NEW_ROTATION)
x = ((vd->dpi.top >> 1) - (vd->dpi.left >> 2)) & ~0xF;
y = ((vd->dpi.top >> 1) + (vd->dpi.left >> 2) - 0x10) & ~0xF;
#else
x = ((vd->dpi.top >> 1) + (vd->dpi.left >> 2) - 0x10) & ~0xF;
y = ((vd->dpi.left >> 2) - (vd->dpi.top >> 1)) & ~0xF;
#endif
// determine size of area
{
Point pt = RemapCoords(x, y, 241);
width = (vd->dpi.left + vd->dpi.width - pt.x + 95) >> 6;
height = (vd->dpi.top + vd->dpi.height - pt.y) >> 5 << 1;
}
assert(width > 0);
assert(height > 0);
direction = false;
do {
int width_cur = width;
int x_cur = x;
int y_cur = y;
do {
TileType tt;
ti.x = x_cur;
ti.y = y_cur;
if (0 <= x_cur && x_cur < (int)MapMaxX() * TILE_SIZE &&
0 <= y_cur && y_cur < (int)MapMaxY() * TILE_SIZE) {
TileIndex tile = TileVirtXY(x_cur, y_cur);
ti.tile = tile;
ti.tileh = GetTileSlope(tile, &ti.z);
tt = GetTileType(tile);
} else {
ti.tileh = SLOPE_FLAT;
ti.tile = 0;
ti.z = 0;
tt = MP_VOID;
}
#if !defined(NEW_ROTATION)
y_cur += 0x10;
x_cur -= 0x10;
#else
y_cur += 0x10;
x_cur += 0x10;
#endif
_added_tile_sprite = false;
_offset_ground_sprites = false;
_tile_type_procs[tt]->draw_tile_proc(&ti);
DrawTileSelection(&ti);
} while (--width_cur);
#if !defined(NEW_ROTATION)
if ( (direction^=1) != 0)
y += 0x10;
else
x += 0x10;
#else
if ( (direction^=1) != 0)
x += 0x10;
else
y -= 0x10;
#endif
} while (--height);
}
static void ViewportAddTownNames(DrawPixelInfo *dpi)
{
Town *t;
int left, top, right, bottom;
if (!(_display_opt & DO_SHOW_TOWN_NAMES) || _game_mode == GM_MENU)
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
if (dpi->zoom < 1) {
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + 12 &&
right > t->sign.left &&
left < t->sign.left + t->sign.width_1) {
AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
t->index, t->population, 0);
}
}
} else if (dpi->zoom == 1) {
right += 2;
bottom += 2;
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + 24 &&
right > t->sign.left &&
left < t->sign.left + t->sign.width_1*2) {
AddStringToDraw(t->sign.left + 1, t->sign.top + 1,
_patches.population_in_label ? STR_TOWN_LABEL_POP : STR_TOWN_LABEL,
t->index, t->population, 0);
}
}
} else {
right += 4;
bottom += 5;
assert(dpi->zoom == 2);
FOR_ALL_TOWNS(t) {
if (bottom > t->sign.top &&
top < t->sign.top + 24 &&
right > t->sign.left &&
left < t->sign.left + t->sign.width_2*4) {
AddStringToDraw(t->sign.left + 5, t->sign.top + 1, STR_TOWN_LABEL_TINY_BLACK, t->index, 0, 0);
AddStringToDraw(t->sign.left + 1, t->sign.top - 3, STR_TOWN_LABEL_TINY_WHITE, t->index, 0, 0);
}
}
}
}
static void ViewportAddStationNames(DrawPixelInfo *dpi)
{
int left, top, right, bottom;
Station *st;
StringSpriteToDraw *sstd;
if (!(_display_opt & DO_SHOW_STATION_NAMES) || _game_mode == GM_MENU)
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
if (dpi->zoom < 1) {
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + 12 &&
right > st->sign.left &&
left < st->sign.left + st->sign.width_1) {
sstd=AddStringToDraw(st->sign.left + 1, st->sign.top + 1, STR_305C_0, st->index, st->facilities, 0);
if (sstd != NULL) {
sstd->color = (st->owner == OWNER_NONE || !st->facilities) ? 0xE : _player_colors[st->owner];
sstd->width = st->sign.width_1;
}
}
}
} else if (dpi->zoom == 1) {
right += 2;
bottom += 2;
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + 24 &&
right > st->sign.left &&
left < st->sign.left + st->sign.width_1*2) {
sstd=AddStringToDraw(st->sign.left + 1, st->sign.top + 1, STR_305C_0, st->index, st->facilities, 0);
if (sstd != NULL) {
sstd->color = (st->owner == OWNER_NONE || !st->facilities) ? 0xE : _player_colors[st->owner];
sstd->width = st->sign.width_1;
}
}
}
} else {
assert(dpi->zoom == 2);
right += 4;
bottom += 5;
FOR_ALL_STATIONS(st) {
if (bottom > st->sign.top &&
top < st->sign.top + 24 &&
right > st->sign.left &&
left < st->sign.left + st->sign.width_2*4) {
sstd=AddStringToDraw(st->sign.left + 1, st->sign.top + 1, STR_STATION_SIGN_TINY, st->index, st->facilities, 0);
if (sstd != NULL) {
sstd->color = (st->owner == OWNER_NONE || !st->facilities) ? 0xE : _player_colors[st->owner];
sstd->width = st->sign.width_2 | 0x8000;
}
}
}
}
}
static void ViewportAddSigns(DrawPixelInfo *dpi)
{
Sign *si;
int left, top, right, bottom;
StringSpriteToDraw *sstd;
if (!(_display_opt & DO_SHOW_SIGNS))
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
if (dpi->zoom < 1) {
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + 12 &&
right > si->sign.left &&
left < si->sign.left + si->sign.width_1) {
sstd=AddStringToDraw(si->sign.left + 1, si->sign.top + 1, STR_2806, si->str, 0, 0);
if (sstd != NULL) {
sstd->width = si->sign.width_1;
sstd->color = (si->owner == OWNER_NONE) ? 14 : _player_colors[si->owner];
}
}
}
} else if (dpi->zoom == 1) {
right += 2;
bottom += 2;
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + 24 &&
right > si->sign.left &&
left < si->sign.left + si->sign.width_1 * 2) {
sstd=AddStringToDraw(si->sign.left + 1, si->sign.top + 1, STR_2806, si->str, 0, 0);
if (sstd != NULL) {
sstd->width = si->sign.width_1;
sstd->color = (si->owner == OWNER_NONE) ? 14 : _player_colors[si->owner];
}
}
}
} else {
right += 4;
bottom += 5;
FOR_ALL_SIGNS(si) {
if (bottom > si->sign.top &&
top < si->sign.top + 24 &&
right > si->sign.left &&
left < si->sign.left + si->sign.width_2 * 4) {
sstd=AddStringToDraw(si->sign.left + 1, si->sign.top + 1, STR_2002, si->str, 0, 0);
if (sstd != NULL) {
sstd->width = si->sign.width_2 | 0x8000;
sstd->color = (si->owner == OWNER_NONE) ? 14 : _player_colors[si->owner];
}
}
}
}
}
static void ViewportAddWaypoints(DrawPixelInfo *dpi)
{
Waypoint *wp;
int left, top, right, bottom;
StringSpriteToDraw *sstd;
if (!(_display_opt & DO_WAYPOINTS))
return;
left = dpi->left;
top = dpi->top;
right = left + dpi->width;
bottom = top + dpi->height;
if (dpi->zoom < 1) {
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + 12 &&
right > wp->sign.left &&
left < wp->sign.left + wp->sign.width_1) {
sstd = AddStringToDraw(wp->sign.left + 1, wp->sign.top + 1, STR_WAYPOINT_VIEWPORT, wp->index, 0, 0);
if (sstd != NULL) {
sstd->width = wp->sign.width_1;
sstd->color = (wp->deleted ? 0xE : 11);
}
}
}
} else if (dpi->zoom == 1) {
right += 2;
bottom += 2;
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + 24 &&
right > wp->sign.left &&
left < wp->sign.left + wp->sign.width_1*2) {
sstd = AddStringToDraw(wp->sign.left + 1, wp->sign.top + 1, STR_WAYPOINT_VIEWPORT, wp->index, 0, 0);
if (sstd != NULL) {
sstd->width = wp->sign.width_1;
sstd->color = (wp->deleted ? 0xE : 11);
}
}
}
} else {
right += 4;
bottom += 5;
FOR_ALL_WAYPOINTS(wp) {
if (bottom > wp->sign.top &&
top < wp->sign.top + 24 &&
right > wp->sign.left &&
left < wp->sign.left + wp->sign.width_2*4) {
sstd = AddStringToDraw(wp->sign.left + 1, wp->sign.top + 1, STR_WAYPOINT_VIEWPORT_TINY, wp->index, 0, 0);
if (sstd != NULL) {
sstd->width = wp->sign.width_2 | 0x8000;
sstd->color = (wp->deleted ? 0xE : 11);
}
}
}
}
}
void UpdateViewportSignPos(ViewportSign *sign, int left, int top, StringID str)
{
char buffer[128];
uint w;
sign->top = top;
GetString(buffer, str, lastof(buffer));
w = GetStringBoundingBox(buffer).width + 3;
sign->width_1 = w;
sign->left = left - w / 2;
/* zoomed out version */
_cur_fontsize = FS_SMALL;
w = GetStringBoundingBox(buffer).width + 3;
_cur_fontsize = FS_NORMAL;
sign->width_2 = w;
}
static void ViewportDrawTileSprites(TileSpriteToDraw *ts)
{
do {
Point pt = RemapCoords(ts->x, ts->y, ts->z);
DrawSprite(ts->image, pt.x, pt.y);
ts = ts->next;
} while (ts != NULL);
}
static void ViewportSortParentSprites(ParentSpriteToDraw *psd[])
{
while (*psd != NULL) {
ParentSpriteToDraw* ps = *psd;
if (!(ps->unk16 & 1)) {
ParentSpriteToDraw** psd2 = psd;
ps->unk16 |= 1;
while (*++psd2 != NULL) {
ParentSpriteToDraw* ps2 = *psd2;
ParentSpriteToDraw** psd3;
if (ps2->unk16 & 1) continue;
/* Decide which comparator to use, based on whether the bounding
* boxes overlap
*/
if (ps->xmax > ps2->xmin && ps->xmin < ps2->xmax && // overlap in X?
ps->ymax > ps2->ymin && ps->ymin < ps2->ymax && // overlap in Y?
ps->zmax > ps2->zmin && ps->zmin < ps2->zmax) { // overlap in Z?
/* Use X+Y+Z as the sorting order, so sprites closer to the bottom of
* the screen and with higher Z elevation, are drawn in front.
* Here X,Y,Z are the coordinates of the "center of mass" of the sprite,
* i.e. X=(left+right)/2, etc.
* However, since we only care about order, don't actually divide / 2
*/
if (ps->xmin + ps->xmax + ps->ymin + ps->ymax + ps->zmin + ps->zmax <=
ps2->xmin + ps2->xmax + ps2->ymin + ps2->ymax + ps2->zmin + ps2->zmax) {
continue;
}
} else {
if (ps->xmax < ps2->xmin ||
ps->ymax < ps2->ymin ||
ps->zmax < ps2->zmin || (
ps->xmin < ps2->xmax &&
ps->ymin < ps2->ymax &&
ps->zmin < ps2->zmax
)) {
continue;
}
}
// Swap the two sprites ps and ps2 using bubble-sort algorithm.
psd3 = psd;
do {
ParentSpriteToDraw* temp = *psd3;
*psd3 = ps2;
ps2 = temp;
psd3++;
} while (psd3 <= psd2);
}
} else {
psd++;
}
}
}
static void ViewportDrawParentSprites(ParentSpriteToDraw *psd[])
{
for (; *psd != NULL; psd++) {
const ParentSpriteToDraw* ps = *psd;
Point pt = RemapCoords(ps->xmin, ps->ymin, ps->zmin);
const ChildScreenSpriteToDraw* cs;
DrawSprite(ps->image, pt.x, pt.y);
for (cs = ps->child; cs != NULL; cs = cs->next) {
DrawSprite(cs->image, ps->left + cs->x, ps->top + cs->y);
}
}
}
static void ViewportDrawStrings(DrawPixelInfo *dpi, const StringSpriteToDraw *ss)
{
DrawPixelInfo dp;
byte zoom;
_cur_dpi = &dp;
dp = *dpi;
zoom = dp.zoom;
dp.zoom = 0;
dp.left >>= zoom;
dp.top >>= zoom;
dp.width >>= zoom;
dp.height >>= zoom;
do {
if (ss->width != 0) {
int x = (ss->x >> zoom) - 1;
int y = (ss->y >> zoom) - 1;
int bottom = y + 11;
int w = ss->width;
if (w & 0x8000) {
w &= ~0x8000;
y--;
bottom -= 6;
w -= 3;
}
/* Draw the rectangle if 'tranparent station signs' is off,
* or if we are drawing a general text sign (STR_2806) */
if (!(_display_opt & DO_TRANS_SIGNS) || ss->string == STR_2806)
DrawFrameRect(
x, y, x + w, bottom, ss->color,
(_display_opt & DO_TRANS_BUILDINGS) ? FR_TRANSPARENT : 0
);
}
SetDParam(0, ss->params[0]);
SetDParam(1, ss->params[1]);
SetDParam(2, ss->params[2]);
/* if we didn't draw a rectangle, or if transparant building is on,
* draw the text in the color the rectangle would have */
if ((
(_display_opt & DO_TRANS_BUILDINGS) ||
(_display_opt & DO_TRANS_SIGNS && ss->string != STR_2806)
) && ss->width != 0) {
/* Real colors need the IS_PALETTE_COLOR flag
* otherwise colors from _string_colormap are assumed. */
DrawString(
ss->x >> zoom, (ss->y >> zoom) - (ss->width & 0x8000 ? 2 : 0),
ss->string, _colour_gradient[ss->color][6] | IS_PALETTE_COLOR
);
} else {
DrawString(
ss->x >> zoom, (ss->y >> zoom) - (ss->width & 0x8000 ? 2 : 0),
ss->string, 16
);
}
ss = ss->next;
} while (ss != NULL);
}
void ViewportDoDraw(const ViewPort *vp, int left, int top, int right, int bottom)
{
ViewportDrawer vd;
int mask;
int x;
int y;
DrawPixelInfo *old_dpi;
byte mem[VIEWPORT_DRAW_MEM];
ParentSpriteToDraw *parent_list[6144];
_cur_vd = &vd;
old_dpi = _cur_dpi;
_cur_dpi = &vd.dpi;
vd.dpi.zoom = vp->zoom;
mask = (-1) << vp->zoom;
vd.combine_sprites = 0;
vd.dpi.width = (right - left) & mask;
vd.dpi.height = (bottom - top) & mask;
vd.dpi.left = left & mask;
vd.dpi.top = top & mask;
vd.dpi.pitch = old_dpi->pitch;
x = ((vd.dpi.left - (vp->virtual_left&mask)) >> vp->zoom) + vp->left;
y = ((vd.dpi.top - (vp->virtual_top&mask)) >> vp->zoom) + vp->top;
vd.dpi.dst_ptr = old_dpi->dst_ptr + x - old_dpi->left + (y - old_dpi->top) * old_dpi->pitch;
vd.parent_list = parent_list;
vd.eof_parent_list = endof(parent_list);
vd.spritelist_mem = mem;
vd.eof_spritelist_mem = endof(mem) - sizeof(LARGEST_SPRITELIST_STRUCT);
vd.last_string = &vd.first_string;
vd.first_string = NULL;
vd.last_tile = &vd.first_tile;
vd.first_tile = NULL;
ViewportAddLandscape();
#if !defined(NEW_ROTATION)
ViewportAddVehicles(&vd.dpi);
DrawTextEffects(&vd.dpi);
ViewportAddTownNames(&vd.dpi);
ViewportAddStationNames(&vd.dpi);
ViewportAddSigns(&vd.dpi);
ViewportAddWaypoints(&vd.dpi);
#endif
// This assert should never happen (because the length of the parent_list
// is checked)
assert(vd.parent_list <= endof(parent_list));
if (vd.first_tile != NULL) ViewportDrawTileSprites(vd.first_tile);
/* null terminate parent sprite list */
*vd.parent_list = NULL;
ViewportSortParentSprites(parent_list);
ViewportDrawParentSprites(parent_list);
if (vd.first_string != NULL) ViewportDrawStrings(&vd.dpi, vd.first_string);
_cur_dpi = old_dpi;
}
// Make sure we don't draw a too big area at a time.
// If we do, the sprite memory will overflow.
static void ViewportDrawChk(ViewPort *vp, int left, int top, int right, int bottom)
{
if (((bottom - top) * (right - left) << vp->zoom) > 180000) {
if ((bottom - top) > (right - left)) {
int t = (top + bottom) >> 1;
ViewportDrawChk(vp, left, top, right, t);
ViewportDrawChk(vp, left, t, right, bottom);
} else {
int t = (left + right) >> 1;
ViewportDrawChk(vp, left, top, t, bottom);
ViewportDrawChk(vp, t, top, right, bottom);
}
} else {
ViewportDoDraw(vp,
((left - vp->left) << vp->zoom) + vp->virtual_left,
((top - vp->top) << vp->zoom) + vp->virtual_top,
((right - vp->left) << vp->zoom) + vp->virtual_left,
((bottom - vp->top) << vp->zoom) + vp->virtual_top
);
}
}
static inline void ViewportDraw(ViewPort *vp, int left, int top, int right, int bottom)
{
if (right <= vp->left || bottom <= vp->top) return;
if (left >= vp->left + vp->width) return;
if (left < vp->left) left = vp->left;
if (right > vp->left + vp->width) right = vp->left + vp->width;
if (top >= vp->top + vp->height) return;
if (top < vp->top) top = vp->top;
if (bottom > vp->top + vp->height) bottom = vp->top + vp->height;
ViewportDrawChk(vp, left, top, right, bottom);
}
void DrawWindowViewport(Window *w)
{
DrawPixelInfo *dpi = _cur_dpi;
dpi->left += w->left;
dpi->top += w->top;
ViewportDraw(w->viewport, dpi->left, dpi->top, dpi->left + dpi->width, dpi->top + dpi->height);
dpi->left -= w->left;
dpi->top -= w->top;
}
void UpdateViewportPosition(Window *w)
{
const ViewPort *vp = w->viewport;
if (WP(w, vp_d).follow_vehicle != INVALID_VEHICLE) {
const Vehicle* veh = GetVehicle(WP(w,vp_d).follow_vehicle);
Point pt = MapXYZToViewport(vp, veh->x_pos, veh->y_pos, veh->z_pos);
SetViewportPosition(w, pt.x, pt.y);
} else {
#if !defined(NEW_ROTATION)
int x;
int y;
int vx;
int vy;
// Center of the viewport is hot spot
x = WP(w,vp_d).scrollpos_x + vp->virtual_width / 2;
y = WP(w,vp_d).scrollpos_y + vp->virtual_height / 2;
// Convert viewport coordinates to map coordinates
// Calculation is scaled by 4 to avoid rounding errors
vx = -x + y * 2;
vy = x + y * 2;
// clamp to size of map
vx = clamp(vx, 0 * 4, MapMaxX() * TILE_SIZE * 4);
vy = clamp(vy, 0 * 4, MapMaxY() * TILE_SIZE * 4);
// Convert map coordinates to viewport coordinates
x = (-vx + vy) / 2;
y = ( vx + vy) / 4;
// Set position
WP(w, vp_d).scrollpos_x = x - vp->virtual_width / 2;
WP(w, vp_d).scrollpos_y = y - vp->virtual_height / 2;
#else
int x,y,t;
int err;
x = WP(w,vp_d).scrollpos_x >> 2;
y = WP(w,vp_d).scrollpos_y >> 1;
t = x;
x = x + y;
y = x - y;
err= 0;
if (err != 0) {
/* coordinate remap */
Point pt = RemapCoords(x, y, 0);
t = (-1) << vp->zoom;
WP(w,vp_d).scrollpos_x = pt.x & t;
WP(w,vp_d).scrollpos_y = pt.y & t;
}
#endif
SetViewportPosition(w, WP(w, vp_d).scrollpos_x, WP(w, vp_d).scrollpos_y);
}
}
static void MarkViewportDirty(const ViewPort *vp, int left, int top, int right, int bottom)
{
right -= vp->virtual_left;
if (right <= 0) return;
bottom -= vp->virtual_top;
if (bottom <= 0) return;
left = max(0, left - vp->virtual_left);
if (left >= vp->virtual_width) return;
top = max(0, top - vp->virtual_top);
if (top >= vp->virtual_height) return;
SetDirtyBlocks(
(left >> vp->zoom) + vp->left,
(top >> vp->zoom) + vp->top,
(right >> vp->zoom) + vp->left,
(bottom >> vp->zoom) + vp->top
);
}
void MarkAllViewportsDirty(int left, int top, int right, int bottom)
{
const ViewPort *vp = _viewports;
uint32 act = _active_viewports;
do {
if (act & 1) {
assert(vp->width != 0);
MarkViewportDirty(vp, left, top, right, bottom);
}
} while (vp++,act>>=1);
}
void MarkTileDirtyByTile(TileIndex tile)
{
Point pt = RemapCoords(TileX(tile) * TILE_SIZE, TileY(tile) * TILE_SIZE, GetTileZ(tile));
MarkAllViewportsDirty(
pt.x - 31,
pt.y - 122,
pt.x - 31 + 67,
pt.y - 122 + 154
);
}
void MarkTileDirty(int x, int y)
{
uint z = 0;
Point pt;
if (IS_INT_INSIDE(x, 0, MapSizeX() * TILE_SIZE) &&
IS_INT_INSIDE(y, 0, MapSizeY() * TILE_SIZE))
z = GetTileZ(TileVirtXY(x, y));
pt = RemapCoords(x, y, z);
MarkAllViewportsDirty(
pt.x - 31,
pt.y - 122,
pt.x - 31 + 67,
pt.y - 122 + 154
);
}
static void SetSelectionTilesDirty(void)
{
int y_size, x_size;
int x = _thd.pos.x;
int y = _thd.pos.y;
x_size = _thd.size.x;
y_size = _thd.size.y;
if (_thd.outersize.x) {
x_size += _thd.outersize.x;
x += _thd.offs.x;
y_size += _thd.outersize.y;
y += _thd.offs.y;
}
assert(x_size > 0);
assert(y_size > 0);
x_size += x;
y_size += y;
do {
int y_bk = y;
do {
MarkTileDirty(x, y);
} while ( (y += TILE_SIZE) != y_size);
y = y_bk;
} while ( (x += TILE_SIZE) != x_size);
}
void SetSelectionRed(bool b)
{
_thd.make_square_red = b;
SetSelectionTilesDirty();
}
static bool CheckClickOnTown(const ViewPort *vp, int x, int y)
{
const Town *t;
if (!(_display_opt & DO_SHOW_TOWN_NAMES)) return false;
switch (vp->zoom) {
case 0:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + 12 &&
x >= t->sign.left &&
x < t->sign.left + t->sign.width_1) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
case 1:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + 24 &&
x >= t->sign.left &&
x < t->sign.left + t->sign.width_1 * 2) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
default:
x = (x - vp->left + 3) * 4 + vp->virtual_left;
y = (y - vp->top + 3) * 4 + vp->virtual_top;
FOR_ALL_TOWNS(t) {
if (y >= t->sign.top &&
y < t->sign.top + 24 &&
x >= t->sign.left &&
x < t->sign.left + t->sign.width_2 * 4) {
ShowTownViewWindow(t->index);
return true;
}
}
break;
}
return false;
}
static bool CheckClickOnStation(const ViewPort *vp, int x, int y)
{
const Station *st;
if (!(_display_opt & DO_SHOW_STATION_NAMES)) return false;
switch (vp->zoom) {
case 0:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + 12 &&
x >= st->sign.left &&
x < st->sign.left + st->sign.width_1) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
case 1:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + 24 &&
x >= st->sign.left &&
x < st->sign.left + st->sign.width_1 * 2) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
default:
x = (x - vp->left + 3) * 4 + vp->virtual_left;
y = (y - vp->top + 3) * 4 + vp->virtual_top;
FOR_ALL_STATIONS(st) {
if (y >= st->sign.top &&
y < st->sign.top + 24 &&
x >= st->sign.left &&
x < st->sign.left + st->sign.width_2 * 4) {
ShowStationViewWindow(st->index);
return true;
}
}
break;
}
return false;
}
static bool CheckClickOnSign(const ViewPort *vp, int x, int y)
{
const Sign *si;
if (!(_display_opt & DO_SHOW_SIGNS)) return false;
switch (vp->zoom) {
case 0:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + 12 &&
x >= si->sign.left &&
x < si->sign.left + si->sign.width_1) {
ShowRenameSignWindow(si);
return true;
}
}
break;
case 1:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + 24 &&
x >= si->sign.left &&
x < si->sign.left + si->sign.width_1 * 2) {
ShowRenameSignWindow(si);
return true;
}
}
break;
default:
x = (x - vp->left + 3) * 4 + vp->virtual_left;
y = (y - vp->top + 3) * 4 + vp->virtual_top;
FOR_ALL_SIGNS(si) {
if (y >= si->sign.top &&
y < si->sign.top + 24 &&
x >= si->sign.left &&
x < si->sign.left + si->sign.width_2 * 4) {
ShowRenameSignWindow(si);
return true;
}
}
break;
}
return false;
}
static bool CheckClickOnWaypoint(const ViewPort *vp, int x, int y)
{
const Waypoint *wp;
if (!(_display_opt & DO_WAYPOINTS)) return false;
switch (vp->zoom) {
case 0:
x = x - vp->left + vp->virtual_left;
y = y - vp->top + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + 12 &&
x >= wp->sign.left &&
x < wp->sign.left + wp->sign.width_1) {
ShowRenameWaypointWindow(wp);
return true;
}
}
break;
case 1:
x = (x - vp->left + 1) * 2 + vp->virtual_left;
y = (y - vp->top + 1) * 2 + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + 24 &&
x >= wp->sign.left &&
x < wp->sign.left + wp->sign.width_1 * 2) {
ShowRenameWaypointWindow(wp);
return true;
}
}
break;
default:
x = (x - vp->left + 3) * 4 + vp->virtual_left;
y = (y - vp->top + 3) * 4 + vp->virtual_top;
FOR_ALL_WAYPOINTS(wp) {
if (y >= wp->sign.top &&
y < wp->sign.top + 24 &&
x >= wp->sign.left &&
x < wp->sign.left + wp->sign.width_2 * 4) {
ShowRenameWaypointWindow(wp);
return true;
}
}
break;
}
return false;
}
static void CheckClickOnLandscape(const ViewPort *vp, int x, int y)
{
Point pt = TranslateXYToTileCoord(vp, x, y);
if (pt.x != -1) ClickTile(TileVirtXY(pt.x, pt.y));
}
static void SafeShowTrainViewWindow(const Vehicle* v)
{
if (!IsFrontEngine(v)) v = GetFirstVehicleInChain(v);
ShowTrainViewWindow(v);
}
static void Nop(const Vehicle *v) {}
typedef void OnVehicleClickProc(const Vehicle *v);
static OnVehicleClickProc* const _on_vehicle_click_proc[] = {
SafeShowTrainViewWindow,
ShowRoadVehViewWindow,
ShowShipViewWindow,
ShowAircraftViewWindow,
Nop, // Special vehicles
Nop // Disaster vehicles
};
void HandleViewportClicked(const ViewPort *vp, int x, int y)
{
const Vehicle *v;
if (CheckClickOnTown(vp, x, y)) return;
if (CheckClickOnStation(vp, x, y)) return;
if (CheckClickOnSign(vp, x, y)) return;
if (CheckClickOnWaypoint(vp, x, y)) return;
CheckClickOnLandscape(vp, x, y);
v = CheckClickOnVehicle(vp, x, y);
if (v != NULL) {
DEBUG(misc, 2) ("Vehicle %d at %p", v->index, v);
_on_vehicle_click_proc[v->type - 0x10](v);
}
}
Vehicle *CheckMouseOverVehicle(void)
{
const Window *w;
const ViewPort *vp;
int x = _cursor.pos.x;
int y = _cursor.pos.y;
w = FindWindowFromPt(x, y);
if (w == NULL) return NULL;
vp = IsPtInWindowViewport(w, x, y);
return (vp != NULL) ? CheckClickOnVehicle(vp, x, y) : NULL;
}
void PlaceObject(void)
{
Point pt;
Window *w;
pt = GetTileBelowCursor();
if (pt.x == -1) return;
if (_thd.place_mode == VHM_POINT) {
pt.x += 8;
pt.y += 8;
}
_tile_fract_coords.x = pt.x & 0xF;
_tile_fract_coords.y = pt.y & 0xF;
w = GetCallbackWnd();
if (w != NULL) {
WindowEvent e;
e.event = WE_PLACE_OBJ;
e.we.place.pt = pt;
e.we.place.tile = TileVirtXY(pt.x, pt.y);
w->wndproc(w, &e);
}
}
/* scrolls the viewport in a window to a given location */
bool ScrollWindowTo(int x , int y, Window *w)
{
Point pt;
pt = MapXYZToViewport(w->viewport, x, y, GetSlopeZ(x, y));
WP(w, vp_d).follow_vehicle = INVALID_VEHICLE;
if (WP(w, vp_d).scrollpos_x == pt.x && WP(w, vp_d).scrollpos_y == pt.y)
return false;
WP(w, vp_d).scrollpos_x = pt.x;
WP(w, vp_d).scrollpos_y = pt.y;
return true;
}
bool ScrollMainWindowTo(int x, int y)
{
Window *w;
bool res = ScrollWindowTo(x, y, FindWindowById(WC_MAIN_WINDOW, 0));
/* If a user scrolls to a tile (via what way what so ever) and already is on
* that tile (e.g.: pressed twice), move the smallmap to that location,
* so you directly see where you are on the smallmap. */
if (res) return res;
w = FindWindowById(WC_SMALLMAP, 0);
if (w == NULL) return res;
SmallMapCenterOnCurrentPos(w);
return res;
}
bool ScrollMainWindowToTile(TileIndex tile)
{
return ScrollMainWindowTo(TileX(tile) * TILE_SIZE + TILE_SIZE / 2, TileY(tile) * TILE_SIZE + TILE_SIZE / 2);
}
void SetRedErrorSquare(TileIndex tile)
{
TileIndex old;
old = _thd.redsq;
_thd.redsq = tile;
if (tile != old) {
if (tile != 0) MarkTileDirtyByTile(tile);
if (old != 0) MarkTileDirtyByTile(old);
}
}
void SetTileSelectSize(int w, int h)
{
_thd.new_size.x = w * TILE_SIZE;
_thd.new_size.y = h * TILE_SIZE;
_thd.new_outersize.x = 0;
_thd.new_outersize.y = 0;
}
void SetTileSelectBigSize(int ox, int oy, int sx, int sy)
{
_thd.offs.x = ox * TILE_SIZE;
_thd.offs.y = oy * TILE_SIZE;
_thd.new_outersize.x = sx * TILE_SIZE;
_thd.new_outersize.y = sy * TILE_SIZE;
}
/* returns the best autorail highlight type from map coordinates */
static byte GetAutorailHT(int x, int y)
{
return HT_RAIL | _AutorailPiece[x & 0xF][y & 0xF];
}
// called regular to update tile highlighting in all cases
void UpdateTileSelection(void)
{
int x1;
int y1;
_thd.new_drawstyle = 0;
if (_thd.place_mode == VHM_SPECIAL) {
x1 = _thd.selend.x;
y1 = _thd.selend.y;
if (x1 != -1) {
int x2 = _thd.selstart.x;
int y2 = _thd.selstart.y;
x1 &= ~0xF;
y1 &= ~0xF;
if (x1 >= x2) intswap(x1,x2);
if (y1 >= y2) intswap(y1,y2);
_thd.new_pos.x = x1;
_thd.new_pos.y = y1;
_thd.new_size.x = x2 - x1 + TILE_SIZE;
_thd.new_size.y = y2 - y1 + TILE_SIZE;
_thd.new_drawstyle = _thd.next_drawstyle;
}
} else if (_thd.place_mode != VHM_NONE) {
Point pt = GetTileBelowCursor();
x1 = pt.x;
y1 = pt.y;
if (x1 != -1) {
switch (_thd.place_mode) {
case VHM_RECT:
_thd.new_drawstyle = HT_RECT;
break;
case VHM_POINT:
_thd.new_drawstyle = HT_POINT;
x1 += 8;
y1 += 8;
break;
case VHM_RAIL:
_thd.new_drawstyle = GetAutorailHT(pt.x, pt.y); // draw one highlighted tile
}
_thd.new_pos.x = x1 & ~0xF;
_thd.new_pos.y = y1 & ~0xF;
}
}
// redraw selection
if (_thd.drawstyle != _thd.new_drawstyle ||
_thd.pos.x != _thd.new_pos.x || _thd.pos.y != _thd.new_pos.y ||
_thd.size.x != _thd.new_size.x || _thd.size.y != _thd.new_size.y ||
_thd.outersize.x != _thd.new_outersize.x ||
_thd.outersize.y != _thd.new_outersize.y) {
// clear the old selection?
if (_thd.drawstyle) SetSelectionTilesDirty();
_thd.drawstyle = _thd.new_drawstyle;
_thd.pos = _thd.new_pos;
_thd.size = _thd.new_size;
_thd.outersize = _thd.new_outersize;
_thd.dirty = 0xff;
// draw the new selection?
if (_thd.new_drawstyle) SetSelectionTilesDirty();
}
}
// highlighting tiles while only going over them with the mouse
void VpStartPlaceSizing(TileIndex tile, int user)
{
_thd.userdata = user;
_thd.selend.x = TileX(tile) * TILE_SIZE;
_thd.selstart.x = TileX(tile) * TILE_SIZE;
_thd.selend.y = TileY(tile) * TILE_SIZE;
_thd.selstart.y = TileY(tile) * TILE_SIZE;
if (_thd.place_mode == VHM_RECT) {
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = HT_RECT;
} else if (_thd.place_mode == VHM_RAIL) { // autorail one piece
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = _thd.drawstyle;
} else {
_thd.place_mode = VHM_SPECIAL;
_thd.next_drawstyle = HT_POINT;
}
_special_mouse_mode = WSM_SIZING;
}
void VpSetPlaceSizingLimit(int limit)
{
_thd.sizelimit = limit;
}
/**
* Highlights all tiles between a set of two tiles. Used in dock and tunnel placement
* @param from TileIndex of the first tile to highlight
* @param to TileIndex of the last tile to highlight */
void VpSetPresizeRange(TileIndex from, TileIndex to)
{
uint distance = DistanceManhattan(from, to) + 1;
_thd.selend.x = TileX(to) * TILE_SIZE;
_thd.selend.y = TileY(to) * TILE_SIZE;
_thd.selstart.x = TileX(from) * TILE_SIZE;
_thd.selstart.y = TileY(from) * TILE_SIZE;
_thd.next_drawstyle = HT_RECT;
/* show measurement only if there is any length to speak of */
if (distance > 1) GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, &distance);
}
static void VpStartPreSizing(void)
{
_thd.selend.x = -1;
_special_mouse_mode = WSM_PRESIZE;
}
/* returns information about the 2x1 piece to be build.
* The lower bits (0-3) are the track type. */
static byte Check2x1AutoRail(int mode)
{
int fxpy = _tile_fract_coords.x + _tile_fract_coords.y;
int sxpy = (_thd.selend.x & 0xF) + (_thd.selend.y & 0xF);
int fxmy = _tile_fract_coords.x - _tile_fract_coords.y;
int sxmy = (_thd.selend.x & 0xF) - (_thd.selend.y & 0xF);
switch (mode) {
case 0: // end piece is lower right
if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return 3; }
if (fxmy < -3 && sxmy > 3) {/* DoRailroadTrack(0); */return 5; }
return 1;
case 1:
if (fxmy > 3 && sxmy < -3) { /*SwapSelection(); DoRailroadTrack(0); */return 4; }
if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return 2; }
return 1;
case 2:
if (fxmy > 3 && sxmy < -3) { /*DoRailroadTrack(3);*/ return 4; }
if (fxpy >= 20 && sxpy <= 12) { /*SwapSelection(); DoRailroadTrack(0); */return 3; }
return 0;
case 3:
if (fxmy < -3 && sxmy > 3) { /*SwapSelection(); DoRailroadTrack(3);*/ return 5; }
if (fxpy <= 12 && sxpy >= 20) { /*DoRailroadTrack(0); */return 2; }
return 0;
}
return 0; // avoids compiler warnings
}
/** Check if the direction of start and end tile should be swapped based on
* the dragging-style. Default directions are:
* in the case of a line (HT_RAIL, HT_LINE): DIR_NE, DIR_NW, DIR_N, DIR_E
* in the case of a rect (HT_RECT, HT_POINT): DIR_S, DIR_E
* For example dragging a rectangle area from south to north should be swapped to
* north-south (DIR_S) to obtain the same results with less code. This is what
* the return value signifies.
* @param style HighLightStyle dragging style
* @param start_tile, end_tile start and end tile of drag
* @param boolean value which when true means start/end should be swapped */
static bool SwapDirection(HighLightStyle style, TileIndex start_tile, TileIndex end_tile)
{
uint start_x = TileX(start_tile);
uint start_y = TileY(start_tile);
uint end_x = TileX(end_tile);
uint end_y = TileY(end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RAIL:
case HT_LINE: return (end_x > start_x || (end_x == start_x && end_y > start_y));
case HT_RECT:
case HT_POINT: return (end_x != start_x && end_y < start_y);
default: NOT_REACHED();
}
return false;
}
/** Calculates height difference between one tile and another
* Multiplies the result to suit the standard given by minimap - 50 meters high
* To correctly get the height difference we need the direction we are dragging
* in, as well as with what kind of tool we are dragging. For example a horizontal
* autorail tool that starts in bottom and ends at the top of a tile will need the
* maximum of SW,S and SE,N corners respectively. This is handled by the lookup table below
* See _tileoffs_by_dir in map.c for the direction enums if you can't figure out
* the values yourself.
* @param style HightlightStyle of drag. This includes direction and style (autorail, rect, etc.)
* @param distance amount of tiles dragged, important for horizontal/vertical drags
* ignored for others
* @param start_tile, end_tile start and end tile of drag operation
* @return height difference between two tiles. Tile measurement tool utilizes
* this value in its tooltips */
static int CalcHeightdiff(HighLightStyle style, uint distance, TileIndex start_tile, TileIndex end_tile)
{
bool swap = SwapDirection(style, start_tile, end_tile);
byte style_t;
uint h0, h1, ht; // start heigth, end height, and temp variable
if (start_tile == end_tile) return 0;
if (swap) swap_tile(&start_tile, &end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RECT: {
static const TileIndexDiffC heightdiff_area_by_dir[] = {
/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */
/* End */ {0, 1}, /* Dragging east */ {1, 1} /* Dragging south */
};
/* In the case of an area we can determine whether we were dragging south or
* east by checking the X-coordinates of the tiles */
style_t = (byte)(TileX(end_tile) > TileX(start_tile));
start_tile = TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_area_by_dir[style_t]));
end_tile = TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_area_by_dir[2 + style_t]));
}
/* Fallthrough */
case HT_POINT:
h0 = TileHeight(start_tile);
h1 = TileHeight(end_tile);
break;
default: { /* All other types, this is mostly only line/autorail */
static const HighLightStyle flip_style_direction[] = {
HT_DIR_X, HT_DIR_Y, HT_DIR_HL, HT_DIR_HU, HT_DIR_VR, HT_DIR_VL
};
static const TileIndexDiffC heightdiff_line_by_dir[] = {
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_X */ {0, 1}, {1, 1}, /* HT_DIR_Y */
/* Start */ {1, 0}, {0, 0}, /* HT_DIR_HU */ {1, 0}, {1, 1}, /* HT_DIR_HL */
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_VL */ {0, 1}, {1, 1}, /* HT_DIR_VR */
/* Start */ {0, 1}, {0, 0}, /* HT_DIR_X */ {1, 0}, {0, 0}, /* HT_DIR_Y */
/* End */ {0, 1}, {0, 0}, /* HT_DIR_HU */ {1, 1}, {0, 1}, /* HT_DIR_HL */
/* End */ {1, 0}, {0, 0}, /* HT_DIR_VL */ {0, 0}, {0, 1}, /* HT_DIR_VR */
};
distance %= 2; // we're only interested if the distance is even or uneven
style &= HT_DIR_MASK;
/* To handle autorail, we do some magic to be able to use a lookup table.
* Firstly if we drag the other way around, we switch start&end, and if needed
* also flip the drag-position. Eg if it was on the left, and the distance is even
* that means the end, which is now the start is on the right */
if (swap && distance == 0) style = flip_style_direction[style];
/* Use lookup table for start-tile based on HighLightStyle direction */
style_t = style * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h0 = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t])));
ht = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t + 1])));
h0 = maxu(h0, ht);
/* Use lookup table for end-tile based on HighLightStyle direction
* flip around side (lower/upper, left/right) based on distance */
if (distance == 0) style_t = flip_style_direction[style] * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h1 = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t])));
ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));
h1 = maxu(h1, ht);
} break;
}
if (swap) swap_uint32(&h0, &h1);
/* Minimap shows height in intervals of 50 meters, let's do the same */
return (int)(h1 - h0) * 50;
}
static const StringID measure_strings_length[] = {STR_NULL, STR_MEASURE_LENGTH, STR_MEASURE_LENGTH_HEIGHTDIFF};
// while dragging
static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int method)
{
HighLightStyle b;
uint w, h;
int dx = thd->selstart.x - (thd->selend.x & ~0xF);
int dy = thd->selstart.y - (thd->selend.y & ~0xF);
w = myabs(dx) + 16;
h = myabs(dy) + 16;
if (TileVirtXY(thd->selstart.x, thd->selstart.y) == TileVirtXY(x, y)) { // check if we're only within one tile
if (method == VPM_RAILDIRS) {
b = GetAutorailHT(x, y);
} else { // rect for autosignals on one tile
b = HT_RECT;
}
} else if (h == 16) { // Is this in X direction?
if (dx == 16) { // 2x1 special handling
b = (Check2x1AutoRail(3)) | HT_LINE;
} else if (dx == -16) {
b = (Check2x1AutoRail(2)) | HT_LINE;
} else {
b = HT_LINE | HT_DIR_X;
}
y = thd->selstart.y;
} else if (w == 16) { // Or Y direction?
if (dy == 16) { // 2x1 special handling
b = (Check2x1AutoRail(1)) | HT_LINE;
} else if (dy == -16) { // 2x1 other direction
b = (Check2x1AutoRail(0)) | HT_LINE;
} else {
b = HT_LINE | HT_DIR_Y;
}
x = thd->selstart.x;
} else if (w > h * 2) { // still count as x dir?
b = HT_LINE | HT_DIR_X;
y = thd->selstart.y;
} else if (h > w * 2) { // still count as y dir?
b = HT_LINE | HT_DIR_Y;
x = thd->selstart.x;
} else { // complicated direction
int d = w - h;
thd->selend.x = thd->selend.x & ~0xF;
thd->selend.y = thd->selend.y & ~0xF;
// four cases.
if (x > thd->selstart.x) {
if (y > thd->selstart.y) {
// south
if (d == 0) {
b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
} else if (d >= 0) {
x = thd->selstart.x + h;
b = HT_LINE | HT_DIR_VL;
// return px == py || px == py + 16;
} else {
y = thd->selstart.y + w;
b = HT_LINE | HT_DIR_VR;
} // return px == py || px == py - 16;
} else {
// west
if (d == 0) {
b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
} else if (d >= 0) {
x = thd->selstart.x + h;
b = HT_LINE | HT_DIR_HL;
} else {
y = thd->selstart.y - w;
b = HT_LINE | HT_DIR_HU;
}
}
} else {
if (y > thd->selstart.y) {
// east
if (d == 0) {
b = (x & 0xF) + (y & 0xF) >= 0x10 ? HT_LINE | HT_DIR_HL : HT_LINE | HT_DIR_HU;
} else if (d >= 0) {
x = thd->selstart.x - h;
b = HT_LINE | HT_DIR_HU;
// return px == -py || px == -py - 16;
} else {
y = thd->selstart.y + w;
b = HT_LINE | HT_DIR_HL;
} // return px == -py || px == -py + 16;
} else {
// north
if (d == 0) {
b = (x & 0xF) > (y & 0xF) ? HT_LINE | HT_DIR_VL : HT_LINE | HT_DIR_VR;
} else if (d >= 0) {
x = thd->selstart.x - h;
b = HT_LINE | HT_DIR_VR;
// return px == py || px == py - 16;
} else {
y = thd->selstart.y - w;
b = HT_LINE | HT_DIR_VL;
} //return px == py || px == py + 16;
}
}
}
if (_patches.measure_tooltip) {
TileIndex t0 = TileVirtXY(thd->selstart.x, thd->selstart.y);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
byte index = 0;
uint params[2];
if (distance != 1) {
int heightdiff = CalcHeightdiff(b, distance, t0, t1);
/* If we are showing a tooltip for horizontal or vertical drags,
* 2 tiles have a length of 1. To bias towards the ceiling we add
* one before division. It feels more natural to count 3 lengths as 2 */
if ((b & HT_DIR_MASK) != HT_DIR_X && (b & HT_DIR_MASK) != HT_DIR_Y) {
distance = (distance + 1) / 2;
}
params[index++] = distance;
if (heightdiff != 0) params[index++] = heightdiff;
}
GuiShowTooltipsWithArgs(measure_strings_length[index], index, params);
}
thd->selend.x = x;
thd->selend.y = y;
thd->next_drawstyle = b;
}
/**
* Selects tiles while dragging
* @param x X coordinate of end of selection
* @param y Y coordinate of end of selection
* @param method modifies the way tiles are selected. Possible
* methods are VPM_* in viewport.h */
void VpSelectTilesWithMethod(int x, int y, int method)
{
int sx, sy;
HighLightStyle style;
if (x == -1) {
_thd.selend.x = -1;
return;
}
/* Special handling of drag in any (8-way) direction */
if (method == VPM_RAILDIRS || method == VPM_SIGNALDIRS) {
_thd.selend.x = x;
_thd.selend.y = y;
CalcRaildirsDrawstyle(&_thd, x, y, method);
return;
}
if (_thd.next_drawstyle == HT_POINT) {
x += TILE_SIZE / 2;
y += TILE_SIZE / 2;
}
sx = _thd.selstart.x;
sy = _thd.selstart.y;
switch (method) {
case VPM_X_OR_Y: /* drag in X or Y direction */
if (myabs(sy - y) < myabs(sx - x)) {
y = sy;
style = HT_DIR_X;
} else {
x = sx;
style = HT_DIR_Y;
}
goto calc_heightdiff_single_direction;
case VPM_FIX_X: /* drag in Y direction */
x = sx;
style = HT_DIR_Y;
goto calc_heightdiff_single_direction;
case VPM_FIX_Y: /* drag in X direction */
y = sy;
style = HT_DIR_X;
calc_heightdiff_single_direction:;
if (_patches.measure_tooltip) {
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
byte index = 0;
uint params[2];
if (distance != 1) {
/* With current code passing a HT_LINE style to calculate the height
* difference is enough. However if/when a point-tool is created
* with this method, function should be called with new_style (below)
* instead of HT_LINE | style case HT_POINT is handled specially
* new_style := (_thd.next_drawstyle & HT_RECT) ? HT_LINE | style : _thd.next_drawstyle; */
int heightdiff = CalcHeightdiff(HT_LINE | style, 0, t0, t1);
params[index++] = distance;
if (heightdiff != 0) params[index++] = heightdiff;
}
GuiShowTooltipsWithArgs(measure_strings_length[index], index, params);
} break;
case VPM_X_AND_Y_LIMITED: { /* drag an X by Y constrained rect area */
int limit = (_thd.sizelimit - 1) * TILE_SIZE;
x = sx + clamp(x - sx, -limit, limit);
y = sy + clamp(y - sy, -limit, limit);
/* Fallthrough */
case VPM_X_AND_Y: /* drag an X by Y area */
if (_patches.measure_tooltip) {
static const StringID measure_strings_area[] = {
STR_NULL, STR_NULL, STR_MEASURE_AREA, STR_MEASURE_AREA_HEIGHTDIFF
};
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint dx = abs(TileX(t0) - TileX(t1)) + 1;
uint dy = abs(TileY(t0) - TileY(t1)) + 1;
byte index = 0;
uint params[3];
/* If dragging an area (eg dynamite tool) and it is actually a single
* row/column, change the type to 'line' to get proper calculation for height */
style = _thd.next_drawstyle;
if (style & HT_RECT) {
if (dx == 1) {
style = HT_LINE | HT_DIR_Y;
} else if (dy == 1) {
style = HT_LINE | HT_DIR_X;
}
}
if (dx != 1 || dy != 1) {
int heightdiff = CalcHeightdiff(style, 0, t0, t1);
params[index++] = dx;
params[index++] = dy;
if (heightdiff != 0) params[index++] = heightdiff;
}
GuiShowTooltipsWithArgs(measure_strings_area[index], index, params);
}
break;
}
default: NOT_REACHED();
}
_thd.selend.x = x;
_thd.selend.y = y;
}
// while dragging
bool VpHandlePlaceSizingDrag(void)
{
Window *w;
WindowEvent e;
if (_special_mouse_mode != WSM_SIZING) return true;
e.we.place.userdata = _thd.userdata;
// stop drag mode if the window has been closed
w = FindWindowById(_thd.window_class,_thd.window_number);
if (w == NULL) {
ResetObjectToPlace();
return false;
}
// while dragging execute the drag procedure of the corresponding window (mostly VpSelectTilesWithMethod() )
if (_left_button_down) {
e.event = WE_PLACE_DRAG;
e.we.place.pt = GetTileBelowCursor();
w->wndproc(w, &e);
return false;
}
// mouse button released..
// keep the selected tool, but reset it to the original mode.
_special_mouse_mode = WSM_NONE;
if (_thd.next_drawstyle == HT_RECT) {
_thd.place_mode = VHM_RECT;
} else if ((e.we.place.userdata & 0xF) == VPM_SIGNALDIRS) { // some might call this a hack... -- Dominik
_thd.place_mode = VHM_RECT;
} else if (_thd.next_drawstyle & HT_LINE) {
_thd.place_mode = VHM_RAIL;
} else if (_thd.next_drawstyle & HT_RAIL) {
_thd.place_mode = VHM_RAIL;
} else {
_thd.place_mode = VHM_POINT;
}
SetTileSelectSize(1, 1);
// and call the mouseup event.
e.event = WE_PLACE_MOUSEUP;
e.we.place.pt = _thd.selend;
e.we.place.tile = TileVirtXY(e.we.place.pt.x, e.we.place.pt.y);
e.we.place.starttile = TileVirtXY(_thd.selstart.x, _thd.selstart.y);
w->wndproc(w, &e);
return false;
}
void SetObjectToPlaceWnd(CursorID icon, byte mode, Window *w)
{
SetObjectToPlace(icon, mode, w->window_class, w->window_number);
}
#include "table/animcursors.h"
void SetObjectToPlace(CursorID icon, byte mode, WindowClass window_class, WindowNumber window_num)
{
Window *w;
// undo clicking on button
if (_thd.place_mode != 0) {
_thd.place_mode = 0;
w = FindWindowById(_thd.window_class, _thd.window_number);
if (w != NULL) CallWindowEventNP(w, WE_ABORT_PLACE_OBJ);
}
SetTileSelectSize(1, 1);
_thd.make_square_red = false;
if (mode == VHM_DRAG) { // mode 4 is for dragdropping trains in the depot window
mode = 0;
_special_mouse_mode = WSM_DRAGDROP;
} else {
_special_mouse_mode = WSM_NONE;
}
_thd.place_mode = mode;
_thd.window_class = window_class;
_thd.window_number = window_num;
if (mode == VHM_SPECIAL) // special tools, like tunnels or docks start with presizing mode
VpStartPreSizing();
if ( (int)icon < 0)
SetAnimatedMouseCursor(_animcursors[~icon]);
else
SetMouseCursor(icon);
}
void ResetObjectToPlace(void)
{
SetObjectToPlace(SPR_CURSOR_MOUSE, VHM_NONE, 0, 0);
}
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