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(svn r6912) - Feature: Show a list of cargo types that a vehicle is refittable to in the purchase information window. (mart3p)

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peter1138
2006-10-23 21:39:15 +00:00
parent 552e6de4ce
commit 735c636f6f
7 changed files with 60 additions and 2 deletions
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51
vehicle_gui.c
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@@ -482,7 +482,7 @@ void ShowVehicleRefitWindow(const Vehicle *v, VehicleOrderID order)
}
/* Display additional text from NewGRF in the purchase information window */
uint ShowAdditionalText(int x, int y, int w, EngineID engine)
uint ShowAdditionalText(int x, int y, uint w, EngineID engine)
{
uint16 callback = GetVehicleCallback(CBID_VEHICLE_ADDITIONAL_TEXT, 0, 0, engine, NULL);
if (callback == CALLBACK_FAILED) return 0;
@@ -492,6 +492,55 @@ uint ShowAdditionalText(int x, int y, int w, EngineID engine)
return DrawStringMultiLine(x, y, STR_02BD, w);
}
/* Count the number of bits that are set in a mask */
static uint CountBits(uint32 mask)
{
uint c = 0;
for (; mask != 0; mask >>= 1) if (HASBIT(mask, 0)) c++;
return c;
}
/* Display list of cargo types of the engine, for the purchase information window */
uint ShowRefitOptionsList(int x, int y, uint w, EngineID engine)
{
/* List of cargo types of this engine */
uint32 cmask = EngInfo(engine)->refit_mask;
/* List of cargo types available in this climate */
uint32 lmask = _landscape_global_cargo_mask[_opt.landscape];
char *b = _userstring;
/* Draw nothing if the engine is not refittable */
if (CountBits(cmask) <= 1) return 0;
b = InlineString(b, STR_PURCHASE_INFO_REFITTABLE_TO);
if (cmask == lmask) {
/* Engine can be refitted to all types in this climate */
b = InlineString(b, STR_PURCHASE_INFO_ALL_TYPES);
} else {
CargoID cid;
/* Check if we are able to refit to more cargo types and unable to. If
* so, invert the cargo types to list those that we can't refit to. */
if (CountBits(cmask ^ lmask) < CountBits(cmask)) {
cmask ^= lmask;
b = InlineString(b, STR_PURCHASE_INFO_ALL_BUT);
}
/* Add each cargo type to the list */
for (cid = 0; cmask != 0; cmask >>= 1, cid++) {
if (!HASBIT(cmask, 0)) continue;
b = InlineString(b, _cargoc.names_s[_local_cargo_id_ctype[cid]]);
if (cmask > 1) b = strecpy(b, ", ", lastof(_userstring));
}
}
/* Terminate and display the completed string */
*b = '\0';
return DrawStringMultiLine(x, y, STR_SPEC_USERSTRING, w);
}
// if the sorting criteria had the same value, sort vehicle by unitnumber
#define VEHICLEUNITNUMBERSORTER(r, a, b) {if (r == 0) {r = a->unitnumber - b->unitnumber;}}