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/* $Id$ */
/** @file shared.cpp Shared functions for the trolly AI. */
#include "../../stdafx.h"
#include "../../openttd.h"
#include "../../debug.h"
#include "../../map_func.h"
#include "../../vehicle_base.h"
#include "../../player_base.h"
#include "trolly.h"
int AiNew_GetRailDirection(TileIndex tile_a, TileIndex tile_b, TileIndex tile_c)
{
// 0 = vert
// 1 = horz
// 2 = dig up-left
// 3 = dig down-right
// 4 = dig down-left
// 5 = dig up-right
uint x1 = TileX(tile_a);
uint x2 = TileX(tile_b);
uint x3 = TileX(tile_c);
uint y1 = TileY(tile_a);
uint y2 = TileY(tile_b);
uint y3 = TileY(tile_c);
if (y1 == y2 && y2 == y3) return 0;
if (x1 == x2 && x2 == x3) return 1;
if (y2 > y1) return x2 > x3 ? 2 : 4;
if (x2 > x1) return y2 > y3 ? 2 : 5;
if (y1 > y2) return x2 > x3 ? 5 : 3;
if (x1 > x2) return y2 > y3 ? 4 : 3;
return 0;
}
int AiNew_GetRoadDirection(TileIndex tile_a, TileIndex tile_b, TileIndex tile_c)
{
int x1, x2, x3;
int y1, y2, y3;
int r;
x1 = TileX(tile_a);
x2 = TileX(tile_b);
x3 = TileX(tile_c);
y1 = TileY(tile_a);
y2 = TileY(tile_b);
y3 = TileY(tile_c);
r = 0;
if (x1 < x2) r += 8;
if (y1 < y2) r += 1;
if (x1 > x2) r += 2;
if (y1 > y2) r += 4;
if (x2 < x3) r += 2;
if (y2 < y3) r += 4;
if (x2 > x3) r += 8;
if (y2 > y3) r += 1;
return r;
}
// Get's the direction between 2 tiles seen from tile_a
DiagDirection AiNew_GetDirection(TileIndex tile_a, TileIndex tile_b)
{
if (TileY(tile_a) < TileY(tile_b)) return DIAGDIR_SE;
if (TileY(tile_a) > TileY(tile_b)) return DIAGDIR_NW;
if (TileX(tile_a) < TileX(tile_b)) return DIAGDIR_SW;
return DIAGDIR_NE;
}
// This functions looks up if this vehicle is special for this AI
// and returns his flag
uint AiNew_GetSpecialVehicleFlag(Company *c, Vehicle *v)
{
uint i;
for (i = 0; i < AI_MAX_SPECIAL_VEHICLES; i++) {
if (_companies_ainew[c->index].special_vehicles[i].veh_id == v->index) {
return _companies_ainew[c->index].special_vehicles[i].flag;
}
}
// Not found :(
return 0;
}
bool AiNew_SetSpecialVehicleFlag(Company *c, Vehicle *v, uint flag)
{
int new_id = -1;
uint i;
for (i = 0; i < AI_MAX_SPECIAL_VEHICLES; i++) {
if (_companies_ainew[c->index].special_vehicles[i].veh_id == v->index) {
_companies_ainew[c->index].special_vehicles[i].flag |= flag;
return true;
}
if (new_id == -1 &&
_companies_ainew[c->index].special_vehicles[i].veh_id == 0 &&
_companies_ainew[c->index].special_vehicles[i].flag == 0) {
new_id = i;
}
}
// Out of special_vehicle spots :s
if (new_id == -1) {
DEBUG(ai, 1, "special_vehicles list is too small");
return false;
}
_companies_ainew[c->index].special_vehicles[new_id].veh_id = v->index;
_companies_ainew[c->index].special_vehicles[new_id].flag = flag;
return true;
}
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