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68 lines
1.9 KiB
68 lines
1.9 KiB
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Unit toolsProc;
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Interface
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Uses dataUnit;
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Procedure doMagnet(Var g:GameState);
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Implementation
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Function inBounds(g:GameState; row, col:integer): Boolean;
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Begin
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If (row <= g.mapHeight) And
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(col <= g.mapWidth) And
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(row >= 1) And
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(col >= 1) Then
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Exit(true)
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Else
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Exit(false);
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End;
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Procedure doMagnet(Var g:GameState);
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Var
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row, col, i, s: integer;
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rstep: integer = 0;
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cstep: integer = 0;
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Begin
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For row := 1 To g.mapHeight Do
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For col := 1 To g.mapWidth Do
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Begin
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Case g.map[row,col] Of
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magnetx: cstep := 1;
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magnety: rstep := 1;
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Else continue;
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End;
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For i := 0 To 1 Do
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Begin
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s := 2*i-1;
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(* Follow man *)
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If inBounds(g,row - 2*s*rstep, col - 2*s*cstep) And
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(g.map[row - 2*s*rstep, col - 2*s*cstep] = man) And
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(g.map[row - s*rstep, col - s*cstep] = empty) Then
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Begin
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g.map[row - s*rstep, col - s*cstep] := g.map[row,col];
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g.map[row,col] := empty;
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(* Drag pushables *)
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If inBounds(g, row + s*rstep, col + s*cstep) And
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(g.map[row + s*rstep, col + s*cstep] In pushable) Then
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Begin
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g.map[row,col] := g.map[row + s*rstep, col + s*cstep];
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g.map[row + s*rstep, col + s*cstep] := empty;
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End;
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End;
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(* Pull pushables *)
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If inBounds(g, row + 2*s*rstep, col + 2*s*cstep) And
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(g.map[row + 2*s*rstep, col + 2*s*cstep] In pushable) And
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(g.map[row + s*rstep, col + s*cstep] = empty) Then
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Begin
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g.map[row + s*rstep, col + s*cstep] := g.map[row + 2*s*rstep, col + 2*s*cstep];
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g.map[row + 2*s*rstep, col + 2*s*cstep] := empty;
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End;
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End;
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End;
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End;
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End.
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