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103 lines
2.8 KiB
103 lines
2.8 KiB
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Unit heroEnemy;
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Interface
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Uses dataUnit, Math;
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Procedure moveMan(Var theGS:GameState;rowStep,colStep:integer);
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Procedure moveEnemies(Var theGS:GameState);
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Implementation
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Procedure moveMan(Var theGS:GameState;rowStep,colStep:integer);
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Var
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move: boolean = false;
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nextTile: char;
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Begin
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nextTile := theGS.map[theGS.manRow+rowStep, theGS.manCol+colStep];
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(* Push the boulder *)
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If (nextTile In pushable) And
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(theGS.map[theGS.manRow+2*rowStep, theGS.manCol+2*colStep] = empty) Then
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Begin
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theGS.map[theGS.manRow+2*rowStep, theGS.manCol+2*colStep] := nextTile;
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move := true;
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End;
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(* Move man *)
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If move Or (nextTile In walkable) Then
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Begin
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(* Colect gems while where at it *)
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If nextTile = gem Then
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dec(theGS.goal);
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(* The moving *)
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theGS.map[theGS.manRow, theGS.manCol] := empty;
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theGS.manRow := theGS.manRow + rowStep;
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theGS.manCol := theGS.manCol + colStep;
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theGS.map[theGS.manRow, theGS.manCol] := man;
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End;
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End;
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Procedure moveEnemies(Var theGS:GameState);
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Var
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i, row, col, rowstep, colstep, tries: integer;
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Begin
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For i := 1 To theGS.numEnemies Do
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Begin
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col := theGS.enemy[i].col;
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row := theGS.enemy[i].row;
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rowstep := theGS.manRow - row;
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colstep := theGS.manCol - col;
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(* Figures out general direction. *)
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If abs(rowstep) > abs(colstep) Then
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colstep := 0
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Else If abs(colstep) > abs(rowstep) Then
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rowstep := 0
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Else If random(2) = 0 Then
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rowstep := 0
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Else
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colstep := 0;
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(* Restrict movement to vecinity. *)
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rowstep := min(max(-1,rowstep),1);
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colstep := min(max(-1,colstep),1);
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(* Try to move there. *)
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For tries := 4 Downto 1 Do
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Begin
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(* If there's an obstacle. *)
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If theGS.map[row+rowstep, col+colstep] <> empty Then
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Begin
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If random(1) = 0 Then
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colstep := -colstep
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Else
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rowstep := -rowstep;
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If tries Mod 2 = 0 Then
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Begin
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(* Ol' swap trick *)
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colstep := colstep + rowstep;
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rowstep := colstep - rowstep;
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colstep := colstep - rowstep;
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End
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End
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Else
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Begin
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(* Move the enemy. *)
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theGS.map[row+rowstep, col+colstep] := theGS.map[row,col];
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theGS.map[row,col] := empty;
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col := col+colstep;
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row := row+rowstep;
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theGS.enemy[i].col := col;
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theGS.enemy[i].row := row;
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(* Attack man *)
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If abs(col-theGS.manCol) + abs(row-theGS.manRow) <= 1 Then
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Begin
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theGS.goal := -1;
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End;
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break;
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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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