mirror of https://github.com/OpenTTD/OpenTTD.git
83 lines
1.5 KiB
C
83 lines
1.5 KiB
C
#include "stdafx.h"
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#include "ttd.h"
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#include "player.h"
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#include "ai.h"
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int AiNew_GetRailDirection(uint tile_a, uint tile_b, uint tile_c) {
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// 0 = vert
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// 1 = horz
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// 2 = dig up-left
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// 3 = dig down-right
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// 4 = dig down-left
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// 5 = dig up-right
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int x1, x2, x3;
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int y1, y2, y3;
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x1 = GET_TILE_X(tile_a);
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x2 = GET_TILE_X(tile_b);
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x3 = GET_TILE_X(tile_c);
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y1 = GET_TILE_Y(tile_a);
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y2 = GET_TILE_Y(tile_b);
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y3 = GET_TILE_Y(tile_c);
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if (y1 == y2 && y2 == y3) return 0;
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if (x1 == x2 && x2 == x3) return 1;
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if (y2 > y1) {
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if (x2 > x3) return 2;
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else return 4;
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}
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if (x2 > x1) {
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if (y2 > y3) return 2;
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else return 5;
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}
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if (y1 > y2) {
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if (x2 > x3) return 5;
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else return 3;
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}
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if (x1 > x2) {
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if (y2 > y3) return 4;
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else return 3;
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}
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return 0;
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}
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int AiNew_GetRoadDirection(uint tile_a, uint tile_b, uint tile_c) {
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int x1, x2, x3;
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int y1, y2, y3;
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int r;
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x1 = GET_TILE_X(tile_a);
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x2 = GET_TILE_X(tile_b);
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x3 = GET_TILE_X(tile_c);
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y1 = GET_TILE_Y(tile_a);
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y2 = GET_TILE_Y(tile_b);
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y3 = GET_TILE_Y(tile_c);
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r = 0;
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if (x1 < x2) r += 8;
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if (y1 < y2) r += 1;
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if (x1 > x2) r += 2;
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if (y1 > y2) r += 4;
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if (x2 < x3) r += 2;
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if (y2 < y3) r += 4;
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if (x2 > x3) r += 8;
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if (y2 > y3) r += 1;
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return r;
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}
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// Get's the direction between 2 tiles seen from tile_a
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int AiNew_GetDirection(uint tile_a, uint tile_b) {
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if (GET_TILE_Y(tile_a) < GET_TILE_Y(tile_b)) return 1;
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if (GET_TILE_Y(tile_a) > GET_TILE_Y(tile_b)) return 3;
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if (GET_TILE_X(tile_a) < GET_TILE_X(tile_b)) return 2;
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return 0;
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}
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