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-rw-r--r--viewport.c232
1 files changed, 214 insertions, 18 deletions
diff --git a/viewport.c b/viewport.c
index 5db949401..1053c0c21 100644
--- a/viewport.c
+++ b/viewport.c
@@ -1937,13 +1937,22 @@ void VpSetPlaceSizingLimit(int limit)
_thd.sizelimit = limit;
}
-void VpSetPresizeRange(uint from, uint to)
+/**
+* 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)
@@ -1986,6 +1995,120 @@ static byte Check2x1AutoRail(int mode)
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;
+}
// while dragging
static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int method)
@@ -2087,6 +2210,30 @@ static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int meth
}
}
}
+
+ if (_patches.measure_tooltip) {
+ TileIndex t0 = TileVirtXY(thd->selstart.x, thd->selstart.y);
+ TileIndex t1 = TileVirtXY(x, y);
+ uint distance = DistanceManhattan(t0, t1) + 1;
+ int heightdiff = CalcHeightdiff(b, distance, t0, t1);
+ uint params[2];
+
+ /* 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[0] = distance;
+ if (heightdiff == 0) {
+ GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, params);
+ } else {
+ params[1] = heightdiff;
+ GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH_HEIGHTDIFF, 2, params);
+ }
+ }
+
thd->selend.x = x;
thd->selend.y = y;
thd->next_drawstyle = b;
@@ -2101,6 +2248,7 @@ static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int meth
void VpSelectTilesWithMethod(int x, int y, int method)
{
int sx, sy;
+ HighLightStyle style;
if (x == -1) {
_thd.selend.x = -1;
@@ -2124,32 +2272,80 @@ void VpSelectTilesWithMethod(int x, int y, int method)
sy = _thd.selstart.y;
switch (method) {
- case VPM_FIX_X:
- x = sx;
- break;
-
- case VPM_FIX_Y:
- y = sy;
- break;
-
- case VPM_X_OR_Y:
+ 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;
}
- break;
-
- case VPM_X_AND_Y:
- break;
+ 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;
+ int heightdiff = CalcHeightdiff((_thd.next_drawstyle & HT_DRAG_MASK) | style, 0, t0, t1);
+ uint params[2];
+
+ params[0] = distance;
+ if (heightdiff == 0) {
+ GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, params);
+ } else {
+ params[1] = heightdiff;
+ GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH_HEIGHTDIFF, 2, params);
+ }
+ } break;
- // limit the selected area to a 10x10 rect.
- case VPM_X_AND_Y_LIMITED: {
- int limit = (_thd.sizelimit - 1) * 16;
+ 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);
- break;
+ /* Fallthrough */
+ case VPM_X_AND_Y: { /* drag an X by Y area */
+ if (_patches.measure_tooltip) {
+ 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;
+ HighLightStyle style = _thd.next_drawstyle;
+ int heightdiff;
+ 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 */
+ if (style & HT_RECT) {
+ if (dx == 1) {
+ style = HT_LINE | HT_DIR_Y;
+ } else if (dy == 1) {
+ style = HT_LINE | HT_DIR_X;
+ }
+ }
+
+ heightdiff = CalcHeightdiff(style, 0, t0, t1);
+
+ params[0] = dx;
+ params[1] = dy;
+ if (heightdiff == 0) {
+ GuiShowTooltipsWithArgs(STR_MEASURE_AREA, 2, params);
+ } else {
+ params[2] = heightdiff;
+ GuiShowTooltipsWithArgs(STR_MEASURE_AREA_HEIGHTDIFF, 3, params);
+ }
+ }
+ } break;
+
}
+ default: NOT_REACHED();
}
_thd.selend.x = x;