mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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114 lines
2.9 KiB
C++
114 lines
2.9 KiB
C++
/* $Id$ */
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/** @file articulated_vehicles.cpp */
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#include "stdafx.h"
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#include "openttd.h"
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#include "functions.h"
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#include "command.h"
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#include "vehicle.h"
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#include "articulated_vehicles.h"
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#include "engine.h"
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#include "train.h"
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#include "roadveh.h"
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#include "newgrf_callbacks.h"
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#include "newgrf_engine.h"
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uint CountArticulatedParts(EngineID engine_type)
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{
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if (!HASBIT(EngInfo(engine_type)->callbackmask, CBM_ARTIC_ENGINE)) return 0;
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uint i;
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for (i = 1; i < 10; i++) {
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uint16 callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, i, 0, engine_type, NULL);
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if (callback == CALLBACK_FAILED || callback == 0xFF) break;
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}
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return i - 1;
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}
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void AddArticulatedParts(Vehicle **vl, VehicleType type)
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{
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const Vehicle *v = vl[0];
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Vehicle *u = vl[0];
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if (!HASBIT(EngInfo(v->engine_type)->callbackmask, CBM_ARTIC_ENGINE)) return;
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for (uint i = 1; i < 10; i++) {
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uint16 callback = GetVehicleCallback(CBID_VEHICLE_ARTIC_ENGINE, i, 0, v->engine_type, v);
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if (callback == CALLBACK_FAILED || callback == 0xFF) return;
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/* Attempt to use pre-allocated vehicles until they run out. This can happen
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* if the callback returns different values depending on the cargo type. */
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u->next = vl[i];
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if (u->next == NULL) u->next = AllocateVehicle();
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if (u->next == NULL) return;
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u = u->next;
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EngineID engine_type = GetFirstEngineOfType(type) + GB(callback, 0, 7);
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bool flip_image = HASBIT(callback, 7);
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/* get common values from first engine */
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u->direction = v->direction;
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u->owner = v->owner;
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u->tile = v->tile;
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u->x_pos = v->x_pos;
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u->y_pos = v->y_pos;
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u->z_pos = v->z_pos;
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u->build_year = v->build_year;
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u->vehstatus = v->vehstatus & ~VS_STOPPED;
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u->cargo_subtype = 0;
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u->max_speed = 0;
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u->max_age = 0;
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u->engine_type = engine_type;
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u->value = 0;
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u->subtype = 0;
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u->cur_image = 0xAC2;
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u->random_bits = VehicleRandomBits();
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switch (type) {
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default: NOT_REACHED();
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case VEH_TRAIN: {
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const RailVehicleInfo *rvi_artic = RailVehInfo(engine_type);
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u = new (u) Train();
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u->u.rail.track = v->u.rail.track;
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u->u.rail.railtype = v->u.rail.railtype;
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u->u.rail.first_engine = v->engine_type;
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u->spritenum = rvi_artic->image_index;
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u->cargo_type = rvi_artic->cargo_type;
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u->cargo_cap = rvi_artic->capacity;
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SetArticulatedPart(u);
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} break;
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case VEH_ROAD: {
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const RoadVehicleInfo *rvi_artic = RoadVehInfo(engine_type);
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u = new (u) RoadVehicle();
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u->u.road.first_engine = v->engine_type;
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u->u.road.cached_veh_length = GetRoadVehLength(u);
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u->u.road.state = RVSB_IN_DEPOT;
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u->u.road.roadtype = v->u.road.roadtype;
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u->u.road.compatible_roadtypes = v->u.road.compatible_roadtypes;
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u->spritenum = rvi_artic->image_index;
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u->cargo_type = rvi_artic->cargo_type;
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u->cargo_cap = rvi_artic->capacity;
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SetRoadVehArticPart(u);
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} break;
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}
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if (flip_image) u->spritenum++;
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VehiclePositionChanged(u);
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}
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}
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