3617d24318
These scale a number relative to the map size/circumference. Use them to scale the amount of map objects. Of course at the moment they return just the input, because there are no bigger/smaller maps yet.
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
#include "stdafx.h"
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#include "ttd.h"
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#include "map.h"
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#define TILE_X_BITS 8
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#define TILE_Y_BITS 8
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uint _map_log_x = TILE_X_BITS;
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uint _map_log_y = TILE_Y_BITS;
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#define MAP_SIZE ((1 << TILE_X_BITS) * (1 << TILE_Y_BITS))
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byte _map_type_and_height [MAP_SIZE];
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byte _map5 [MAP_SIZE];
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byte _map3_lo [MAP_SIZE];
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byte _map3_hi [MAP_SIZE];
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byte _map_owner [MAP_SIZE];
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uint16 _map2 [MAP_SIZE];
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byte _map_extra_bits [MAP_SIZE / 4];
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#ifdef _DEBUG
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TileIndex TileAdd(TileIndex tile, TileIndexDiff add,
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const char *exp, const char *file, int line)
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{
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int dx;
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int dy;
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uint x;
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uint y;
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dx = add & MapMaxX();
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if (dx >= (int)MapSizeX() / 2) dx -= MapSizeX();
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dy = (add - dx) / (int)MapSizeX();
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x = TileX(tile) + dx;
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y = TileY(tile) + dy;
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if (x >= MapSizeX() || y >= MapSizeY()) {
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char buf[512];
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sprintf(buf, "TILE_ADD(%s) when adding 0x%.4X and 0x%.4X failed",
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exp, tile, add);
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#if !defined(_MSC_VER)
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fprintf(stderr, "%s:%d %s\n", file, line, buf);
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#else
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_assert(buf, (char*)file, line);
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#endif
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}
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assert(TILE_XY(x,y) == TILE_MASK(tile + add));
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return TILE_XY(x,y);
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}
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#endif
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uint ScaleByMapSize(uint n)
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{
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int shift = (int)MapLogX() - 8 + (int)MapLogY() - 8;
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if (shift < 0)
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return (n + (1 << -shift) - 1) >> -shift;
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else
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return n << shift;
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}
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uint ScaleByMapSize1D(uint n)
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{
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int shift = ((int)MapLogX() - 8 + (int)MapLogY() - 8) / 2;
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if (shift < 0)
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return (n + (1 << -shift) - 1) >> -shift;
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else
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return n << shift;
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}
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const TileIndexDiffC _tileoffs_by_dir[] = {
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{-1, 0},
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{ 0, 1},
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{ 1, 0},
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{ 0, -1}
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};
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