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(svn r4367) CodeChange : Remove another direct map access in station_cmd.c. Replace an array of TileIndexDiffC by a use of loop with TileDiffXY. Thanks to Rubidium

This commit is contained in:
belugas 2006-04-11 22:09:21 +00:00
parent 9ccb373edb
commit 88440522fe
2 changed files with 47 additions and 23 deletions
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4
clear_map.h
View File

@ -19,6 +19,10 @@ typedef enum ClearGround {
} ClearGround;
static inline ClearGround GetClearGround(TileIndex t)
{
assert(IsTileType(t, MP_CLEAR));

66
station_cmd.c
View File

@ -28,6 +28,7 @@
#include "depot.h"
#include "train.h"
#include "water_map.h"
#include "industry_map.h"
enum {
/* Max stations: 64000 (64 * 1000) */
@ -273,25 +274,44 @@ static Station *AllocateStation(void)
}
static int CountMapSquareAround(TileIndex tile, byte type, byte min, byte max)
/**
* Counts the numbers of tiles matching a specific type in the area around
* @param tile the center tile of the 'count area'
* @param type the type of tile searched for
* @param industry when type == MP_INDUSTRY, the type of the industry,
* in all other cases this parameter is ignored
* @result the noumber of matching tiles around
*/
static int CountMapSquareAround(TileIndex tile, TileType type, IndustryType industry)
{
static const TileIndexDiffC _count_square_table[] = {
{-3, -3}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0},
{-6, 1}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}, {1, 0}
};
const TileIndexDiffC *p;
TileIndex cur_tile;
int dx, dy;
int num = 0;
for (p = _count_square_table; p != endof(_count_square_table); ++p) {
tile = TILE_MASK(tile + ToTileIndexDiff(*p));
for (dx = -3; dx <= 3; dx++) {
for (dy = -3; dy <= 3; dy++) {
cur_tile = tile + TileDiffXY(dx, dy);
if (IsTileType(tile, type) && _m[tile].m5 >= min && _m[tile].m5 <= max)
num++;
if (IsTileType(cur_tile, type)) {
switch (type) {
case MP_INDUSTRY:
if (GetIndustryType(cur_tile) == industry)
num++;
break;
case MP_WATER:
if (!IsWater(cur_tile))
break;
/* FALL THROUGH WHEN WATER TILE */
case MP_TREES:
num++;
break;
default:
break;
}
}
}
}
return num;
@ -340,11 +360,11 @@ static bool GenerateStationName(Station *st, TileIndex tile, int flag)
/* check mine? */
if (HASBIT(free_names, M(STR_SV_STNAME_MINES))) {
if (CountMapSquareAround(tile, MP_INDUSTRY, 0, 6) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, 0x64, 0x73) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, 0x2F, 0x33) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, 0x48, 0x58) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, 0x5B, 0x63) >= 2) {
if (CountMapSquareAround(tile, MP_INDUSTRY, IT_COAL_MINE) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, IT_IRON_MINE) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, IT_COPPER_MINE) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, IT_GOLD_MINE) >= 2 ||
CountMapSquareAround(tile, MP_INDUSTRY, IT_DIAMOND_MINE) >= 2) {
found = M(STR_SV_STNAME_MINES);
goto done;
}
@ -362,15 +382,15 @@ static bool GenerateStationName(Station *st, TileIndex tile, int flag)
/* Check lakeside */
if (HASBIT(free_names, M(STR_SV_STNAME_LAKESIDE)) &&
DistanceFromEdge(tile) < 20 &&
CountMapSquareAround(tile, MP_WATER, 0, 0) >= 5) {
CountMapSquareAround(tile, MP_WATER, 0) >= 5) {
found = M(STR_SV_STNAME_LAKESIDE);
goto done;
}
/* Check woods */
if (HASBIT(free_names, M(STR_SV_STNAME_WOODS)) && (
CountMapSquareAround(tile, MP_TREES, 0, 255) >= 8 ||
CountMapSquareAround(tile, MP_INDUSTRY, 0x10, 0x11) >= 2)
CountMapSquareAround(tile, MP_TREES, 0) >= 8 ||
CountMapSquareAround(tile, MP_INDUSTRY, IT_FOREST) >= 2)
) {
found = _opt.landscape == LT_DESERT ?
M(STR_SV_STNAME_FOREST) : M(STR_SV_STNAME_WOODS);