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525.WGRAPH.C
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1992-10-15
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/*
---------------------------------------------------------------------------
| Graph class | (c) Oct 1992 Sysma Automatisering |
---------------------------------------------------------------------------
| Version 1.0 12/10/92 | First implementation. |
| | J.P. Dijkstra, M.Sc. |
| Version 1.01 15/10/92 | Updated the editor so that when the |
| | mouse cursor is moved out and back in |
| | the map area during drawing (ie. button |
| | pressed), the drawing state remains |
| | active. |
| | J.P. Dijkstra, M.Sc. |
|--------------------------------------------------------------------------
| The Graph class contains the entire graphical map viewer/editor. The |
| display look is based upon the MapEdit program, written by Bill Kirby. |
| The implementation, however, is entirely revamped to take full |
| of the other classes already implemented in the WolfMap program. This |
| class, however, still uses the same format for the definition files as |
| the MapEdit program does.
---------------------------------------------------------------------------
*/
#include "wolfmap.h"
#include "stdio.h"
#include "alloc.h"
#include "string.h"
#include "graphics.h"
#include "bios.h"
/*
---------------------------------------------------------------------------
| Local data structures and constants |
---------------------------------------------------------------------------
| Struct / Class name | Description. |
| Field name | Description. |
---------------------------------------------------------------------------
| Struct / Class name | Description. |
| Field name | Description. |
---------------------------------------------------------------------------
*/
//
// General purpose local definitions.
//
const int cSolid = 0;
const int cCheckered = 1;
const int cHorizontal = cTrue;
const int cVertical = cFalse;
//
// Coordinates of various display areas during editing.
//
const int Offset = 5;
const int CellSize = 7;
const int StartMazeX = 0;
const int StartMazeY = 0;
const int EndMazeX = StartMazeX + 64*CellSize + 2*Offset - 1;
const int EndMazeY = StartMazeY + 64*CellSize + 2*Offset - 1;
const int StartLegendX = 462;
const int StartLegendY = 0;
const int EndLegendX = 639;
const int EndLegendY = 408;
const int StartMapX = StartLegendX + 2;
const int EndMapX = StartLegendX + 44;
const int StartObjX = StartLegendX + 47;
const int EndObjX = StartLegendX + 84;
const int StartUpX = StartLegendX + 87;
const int EndUpX = StartLegendX + 114;
const int StartDownX = StartLegendX + 117;
const int EndDownX = EndLegendX - 2;
const int StartChoiseY = 2;
const int EndChoiseY = 25;
const int StartChoiseX = StartLegendX + 2;
const int EndChoiseX = EndLegendX - 2;
const int StartCommY = EndLegendY - 25;
const int EndCommY = EndLegendY - 2;
const int StartLevelX = StartLegendX + 2;
const int EndLevelX = EndLegendX - 2;
const int StartLevelY = EndLegendY + 1;
const int EndLevelY = EndMazeY - 2;
/*
---------------------------------------------------------------------------
| Local functions to implement elementary operations. |
---------------------------------------------------------------------------
| Function name | Description. |
---------------------------------------------------------------------------
*/
static int MouseReset ()
{
//
// Reset the mouse and return the number of buttons. After the reset,
// the mouse cursor is hidden.
//
asm xor ax, ax;
asm int 0x33;
return _AX != 0 ? _BX : 0;
}
static void MouseShow ()
{
//
// Show the mouse cursor.
//
asm mov ax, 1;
asm int 0x33;
}
static void MouseHide ()
{
//
// Hide the mouse cursor.
//
asm mov ax, 2;
asm int 0x33;
}
static void MousePos (int *PosX, int *PosY, unsigned *Buttons)
{
//
// Determine and return the current mouse position and button states.
//
int StoreX;
int StoreY;
unsigned StoreButtons;
asm mov ax, 3;
asm int 0x33;
asm mov StoreX, cx;
asm mov StoreY, dx;
asm mov StoreButtons, bx;
*PosX = StoreX;
*PosY = StoreY;
*Buttons = StoreButtons;
}
static int HexValue (char Value)
{
//
// Convert the character to it's hex value equivalent.
//
if (Value >= '0' && Value <= '9') return Value - '0';
if (Value >= 'a' && Value <= 'f') return Value - 'a' + 10;
if (Value >= 'A' && Value <= 'F') return Value - 'A' + 10;
return 0;
}
static int InRange (int x, int y, int x1, int y1, int x2, int y2)
{
//
// Return true if the given (x,y) coordinates are within the specified
// area, false otherwise.
//
if (x < x1 || x > x2) return cFalse;
if (y < y1 || y > y2) return cFalse;
return cTrue;
}
static unsigned Min (unsigned First, unsigned Second)
{
return First <= Second ? First : Second;
}
static void Dot (int DotSize, int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setfillstyle (SOLID_FILL, Color);
//
// Place a dot of the requested size.
//
switch (DotSize)
{
case 1:
putpixel (x + 3, y + 3, Color);
break;
case 2:
bar (x + 2, y + 2, x + 4, y + 4);
break;
case 3:
bar (x + 1, y + 1, x + 5, y + 5);
break;
case 4:
bar (x, y, x + 6, y + 6);
break;
}
}
static void Box (int FillType, int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
//
// Draw a box in the cell, using the specified style.
//
setfillstyle (FillType == cSolid ? SOLID_FILL : INTERLEAVE_FILL, Color);
bar (x, y, x + 6, y + 6);
}
static void SplitBox (int x, int y, int UpperColor, int LowerColor)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
//
// Draw the upper part of the box in the cell.
//
setfillstyle (SOLID_FILL, UpperColor);
bar (x, y, x + 6, y + 3);
//
// Now draw the lower part of the box in the cell.
//
setfillstyle (SOLID_FILL, LowerColor);
bar (x, y + 4, x + 6, y + 6);
}
static void Circle (int x, int y, int OuterColor, int InnerColor)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setcolor (OuterColor);
setfillstyle (SOLID_FILL, OuterColor);
//
// Draw a solid circle. Since it is a small cell we are talking about,
// we draw the circle as a series of lines in the cell.
//
line (x + 2, y, x + 4, y);
line (x + 1, y + 1, x + 5, y + 1);
bar (x , y + 2, x + 6, y + 4);
line (x + 1, y + 5, x + 5, y + 5);
line (x + 2, y + 6, x + 4, y + 6);
//
// If we need an inner circle, draw it also as a series of lines.
//
if (OuterColor != InnerColor)
{
setcolor (InnerColor);
putpixel (x + 3, y + 2, InnerColor);
line (x + 2, y + 3, x + 4, y + 3);
putpixel (x + 3, y + 4, InnerColor);
}
}
static void Door (int Horizontal, int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setfillstyle (SOLID_FILL, Color);
//
// Draw a horizontal or vertical door.
//
if (Horizontal)
{
bar (x, y + 2, x + 6, y + 4);
}
else
{
bar (x + 2, y, x + 4, y + 6);
}
}
static void Cross (int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setcolor (Color);
//
// Draw two crossed lines in the given color.
//
line (x + 1, y + 1, x + 5, y + 5);
line (x + 5, y + 1, x + 1, y + 5);
}
static void Rectangle (int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setcolor (Color);
//
// Draw a rectangle around the edges of the cell in the given color.
//
rectangle (x, y, x + 6, y + 6);
}
static void Arrow (int Direction, int x, int y, int Color)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setcolor (Color);
//
// Draw the arrow as a series of three lines.
//
switch (Direction)
{
case 0:
line (x + 3, y + 6, x + 3, y);
line (x + 3, y, x, y + 3);
line (x + 3, y, x + 6, y + 3);
break;
case 1:
line (x, y + 6, x + 6, y);
line (x + 6, y, x + 3, y);
line (x + 6, y, x + 6, y + 3);
break;
case 2:
line (x, y + 3, x + 6, y + 3);
line (x + 6, y + 3, x + 3, y);
line (x + 6, y + 3, x + 3, y + 6);
break;
case 3:
line (x, y, x + 6, y + 6);
line (x + 6, y + 6, x + 3, y + 6);
line (x + 6, y + 6, x + 6, y + 3);
break;
case 4:
line (x + 3, y, x + 3, y + 6);
line (x + 3, y + 6, x, y + 3);
line (x + 3, y + 6, x + 6, y + 3);
break;
case 5:
line (x + 6, y, x, y + 6);
line (x, y + 6, x + 3, y + 6);
line (x, y + 6, x, y + 3);
break;
case 6:
line (x + 6, y + 3, x, y + 3);
line (x, y + 3, x + 3, y);
line (x, y + 3, x + 3, y + 6);
break;
case 7:
line (x + 6, y + 6, x, y);
line (x, y, x + 3, y);
line (x, y, x, y + 3);
break;
}
}
static void Text (int x, int y, int Color, char *Text)
{
x = x * CellSize + StartMazeX + Offset;
y = y * CellSize + StartMazeY + Offset;
setcolor (Color);
//
// Display the text in the cell.
//
outtextxy (x, y, Text);
}
static void Cell (int x, int y, LegendRec *Legend)
{
//
// If no legend entry is specified, output a black box.
//
if (Legend == NULL)
{
Box (cSolid, x, y, 0);
return;
}
//
// At this point a representation is specified. Now figure out how to
// draw the cell and do it.
//
int OuterColor = HexValue (Legend->Representation [0]);
int InnerColor = HexValue (Legend->Representation [1]);
switch (Legend->Representation [2])
{
case '0':
Text (x, y, OuterColor, Legend->Representation+3);
break;
case '1':
Box (cSolid, x, y, OuterColor);
break;
case '2':
Box (cCheckered, x, y, OuterColor);
break;
case '3':
Box (cSolid, x, y, OuterColor);
Dot (2, x, y, InnerColor);
break;
case '4':
Box (cCheckered, x, y, OuterColor);
Dot (2, x, y, InnerColor);
break;
case '5':
Circle (x, y, OuterColor, InnerColor);
break;
case '6':
Door (cHorizontal, x, y, OuterColor);
break;
case '7':
Door (cVertical, x, y, OuterColor);
break;
case '8':
SplitBox (x, y, OuterColor, InnerColor);
break;
case '9':
Dot (1, x, y, OuterColor);
break;
case 'a':
Dot (2, x, y, OuterColor);
break;
case 'b':
Dot (3, x, y, OuterColor);
break;
case 'c':
Dot (4, x, y, OuterColor);
break;
case 'd':
Cross (x, y, OuterColor);
break;
case 'e':
Rectangle (x, y, OuterColor);
break;
case 'f':
// Arrow (HexValue (Legend->Representation [3]), x, y, OuterColor);
Arrow (InnerColor, x, y, OuterColor);
break;
}
}
static void ClearLine (int Line)
{
setfillstyle (SOLID_FILL, 0);
bar (StartMazeX + Offset, Line, EndMazeX - Offset, Line + 7);
}
static void LegendLine (int y, LegendRec **LegendList, unsigned Value)
{
char Buffer [30];
//
// Place the legend and determine the legend text. When a NULL pointer
// has been supplied, make a default text.
//
if (LegendList [Value] == NULL)
{
sprintf (Buffer, " - Unknown %04X", Value);
}
else
{
sprintf (Buffer, " - %s", LegendList [Value]->Name);
Cell (66, y, LegendList [Value]);
}
//
// Place the legend text.
//
Text (67, y, 15, Buffer);
}
static void DisplayLegend (LegendRec **LegendList, unsigned First, unsigned Last)
{
//
// Erase the legend list.
//
setfillstyle (SOLID_FILL, 0);
bar (StartLegendX + 2, EndChoiseY + 3, EndLegendX - 2, StartCommY - 3);
//
// Display the legend, one line at a time.
//
unsigned Line = 4;
while (First <= Last)
{
LegendLine (Line, LegendList, First);
First++;
Line += 2;
}
}
static void DisplayChoise (LegendRec **LegendList, unsigned Value)
{
//
// Erase any previous legend.
//
setfillstyle (SOLID_FILL, 0);
bar (StartChoiseX, StartChoiseY, EndChoiseX, EndChoiseY);
//
// Place the legend in the choise area.
//
LegendLine (1, LegendList, Value);
}
static void CellPosition (int Line, int x, int y)
{
//
// Erase the old position information.
//
setfillstyle (SOLID_FILL, 0);
bar (StartMazeX + Offset, Line, StartMazeX + Offset + 49, Line + 7);
//
// Write the new position information.
//
char Buffer [30];
setcolor (15);
sprintf (Buffer, "(%02d,%02d)", x, y);
outtextxy (StartMazeX + Offset, Line, Buffer);
}
static void LegendInfo (int Line, unsigned Value, LegendRec *Legend, char *Leader)
{
//
// Erase the old legend information.
//
setfillstyle (SOLID_FILL, 0);
bar (StartMazeX + Offset + 80, Line, EndMazeX - Offset, Line + 7);
//
// Write the new legend information.
//
char Buffer [50];
setcolor (15);
sprintf (Buffer, "%s %04X - %s", Leader, Value, Legend == NULL ? "Unknown" : Legend->Name);
outtextxy (StartMazeX + Offset + 80, Line, Buffer);
}
static int LoadLegend (char *DefFile, unsigned MaxLegends, LegendRec **Legends)
{
//
// Try opening the specified definition file. Return an error
// immediately upon failure.
//
FILE *Stream = fopen (DefFile, "r");
if (Stream == NULL) return errNoDefFile;
char Name [25];
char Repr [5];
unsigned Value;
int Error = errOk;
//
// Read every line from the file, one line at a time.
//
while (Error == errOk && !feof (Stream) )
{
char Buffer [80];
//
// Read and process the line if the line is not empty.
//
if (fgets (Buffer, 79, Stream) != NULL && *Buffer != '\0')
{
int Result = sscanf (Buffer, "%4x %4s %24[ -9A-Za-z]", &Value, &Repr, &Name);
//
// Store the result if the line contained the correct components.
//
if (Result == 3 && Value < MaxLegends)
{
Legends [Value] = (LegendRec *) malloc ( sizeof (LegendRec) );
if (Legends [Value] != NULL)
{
strcpy (Legends [Value]->Representation, Repr);
strcpy (Legends [Value]->Name, Name);
}
else
{
Error = errNoMemory;
}
}
else
{
Error = errIllegalLegend;
}
}
}
//
// Close the definition file and return the error state.
//
fclose (Stream);
return Error;
}
/*
---------------------------------------------------------------------------
| Public functions to implement the desired API. |
---------------------------------------------------------------------------
| Function name | Description. |
---------------------------------------------------------------------------
*/
GraphRec::GraphRec ()
{
//
// Initialize the private fields.
//
Maze = NULL;
Objects = NULL;
MazeChoise = 0;
ObjectChoise = 0;
Legend = cMazeLegend;
ChoiseLegend = cMazeLegend;
MazeFirst = 0;
ObjectsFirst = 0;
ShowFloors = cFalse;
ShowObjects = cTrue;
SizeX = 0;
SizeY = 0;
StartTextY = 0;
}
GraphRec::~GraphRec ()
{
Close ();
}
int GraphRec::Open ()
{
//
// Allocate memory for the pointers to the individual legend records.
//
Maze = (LegendRec **) calloc (cMaxMazeLegends, sizeof (LegendRec) );
Objects = (LegendRec **) calloc (cMaxObjectLegends, sizeof (LegendRec) );
int Error = Maze != NULL && Objects != NULL ? errOk : errNoMemory;
//
// Try loading the legends from the definition files.
//
if (Error == errOk) Error = LoadLegend ("mapdata.def", cMaxMazeLegends, Maze);
if (Error == errOk) Error = LoadLegend ("objdata.def", cMaxObjectLegends, Objects);
//
// For display or editing we use the VGA 640x480 screen mode. Normally,
// this should not cause any problems, since Wolf3D itself also requires
// a VGA system.
//
if (Error == errOk)
{
int GraphDevice = VGA;
int GraphMode = VGAHI;
initgraph (&GraphDevice, &GraphMode, "");
if (GraphDevice != VGA) Error = errInitializeGraph;
}
//
// If the graphics device has been opened, draw the legend on the
// screen.
//
if (Error == errOk)
{
//
// Initialize the mouse and place the button texts.
//
MouseReset ();
setcolor (15);
settextstyle (DEFAULT_FONT, HORIZ_DIR, 1);
outtextxy (StartMapX + 12, StartCommY + 9, "MAP OBJ UP DOWN");
//
// Draw the borders around the legend and the buttons.
//
setcolor (7);
rectangle (StartLegendX, StartLegendY, EndLegendX, EndLegendY);
rectangle (StartLegendX + 1, StartLegendY + 1, EndLegendX - 1, EndLegendY - 1);
line (StartLegendX + 2, StartCommY - 2, EndLegendX - 2, StartCommY - 2);
line (StartLegendX + 2, StartCommY - 1, EndLegendX - 2, StartCommY - 1);
line (StartLegendX + 2, EndChoiseY + 1, EndLegendX - 2, EndChoiseY + 1);
line (StartLegendX + 2, EndChoiseY + 2, EndLegendX - 2, EndChoiseY + 2);
line (EndMapX + 1, StartCommY, EndMapX + 1, EndCommY);
line (StartObjX - 1, StartCommY, StartObjX - 1, EndCommY);
line (EndObjX + 1, StartCommY, EndObjX + 1, EndCommY);
line (StartUpX - 1, StartCommY, StartUpX - 1, EndCommY);
line (EndUpX + 1, StartCommY, EndUpX + 1, EndCommY);
line (StartDownX - 1, StartCommY, StartDownX - 1, EndCommY);
//
// Now place the initial legend list and choise in the proper boxes.
//
DisplayMazeLegend ();
DisplayChoise (Maze, MazeChoise);
}
//
// Return the error state.
//
return Error;
}
int GraphRec::Close ()
{
//
// Close the graphics screen and restore the origional screen mode.
//
closegraph ();
//
// Deallocate any maze legends.
//
if (Maze != NULL)
{
int Count = 0;
while (Count < cMaxMazeLegends)
{
if (Maze [Count] != NULL) free (Maze [Count]);
Count++;
}
free (Maze);
Maze = NULL;
}
//
// Deallocate any object legends.
//
if (Objects != NULL)
{
int Count = 0;
while (Count < cMaxObjectLegends)
{
if (Objects [Count] != NULL) free (Objects [Count]);
Count++;
}
free (Objects);
Objects = NULL;
}
//
// Return Ok to indicate success.
//
return errOk;
}
void GraphRec::DisplayCell (int x, int y, unsigned MazeValue, unsigned ObjectValue)
{
//
// Output the maze representation of this cell.
//
if (MazeValue != 0 && (ShowFloors || DetermineMaze (MazeValue) != mFloor))
{
Cell (x, y, Maze [MazeValue]);
}
//
// Output the object representation of this cell.
//
if (ObjectValue != 0 && (ShowObjects || DetermineObject (ObjectValue) == oSecretDoor))
{
Cell (x, y, Objects [ObjectValue]);
}
}
void GraphRec::DisplayMap (GameMapRec *Map)
{
//
// Erase the old map.
//
int InnerStartX = StartMazeX + 2;
int InnerStartY = StartMazeY + 2;
int InnerEndX = StartMazeX + SizeX*CellSize + 2*Offset - 3;
int InnerEndY = StartMazeY + SizeY*CellSize + 2*Offset - 3;
setfillstyle (SOLID_FILL, 0);
bar (InnerStartX, InnerStartY, InnerEndX, InnerEndY);
//
// Initialize the pointers.
//
unsigned *MazePtr = Map->MazeBlock ();
unsigned *ObjectPtr = Map->ObjectsBlock ();
unsigned PosY = 0;
//
// Walk the entire maze, one row at a time.
//
while (PosY < SizeY)
{
//
// Walk every cell in a row, one cell at a time.
//
unsigned PosX = 0;
while (PosX < SizeX)
{
DisplayCell (PosX++, PosY, *(MazePtr++), *(ObjectPtr++));
}
//
// Advance to the next row.
//
PosY++;
}
}
void GraphRec::DisplayMazeLegend ()
{
DisplayLegend (Maze, MazeFirst, Min (MazeFirst+cMaxDisplayLegend, cMaxMazeLegends)-1);
}
void GraphRec::DisplayObjectLegend ()
{
DisplayLegend (Objects, ObjectsFirst, Min (ObjectsFirst+cMaxDisplayLegend, cMaxObjectLegends)-1);
}
int GraphRec::DetermineArea (int x, int y, int *ResultX, int *ResultY)
{
//
// Determine if the area is one of the four buttons.
//
if ( InRange (x, y, StartMapX, StartCommY, EndMapX, EndCommY) ) return aMapButton;
if ( InRange (x, y, StartObjX, StartCommY, EndObjX, EndCommY) ) return aObjectButton;
if ( InRange (x, y, StartUpX, StartCommY, EndUpX, EndCommY) ) return aUpButton;
if ( InRange (x, y, StartDownX, StartCommY, EndDownX, EndCommY) ) return aDownButton;
//
// Determine if the area is the map itself. If so, calculate the cell
// coordinates.
//
int x1 = StartMazeX + Offset;
int y1 = StartMazeY + Offset;
int x2 = x1 + SizeX * CellSize - 1;
int y2 = y1 + SizeY * CellSize - 1;
if ( InRange (x, y, x1, y1, x2, y2) )
{
*ResultX = (x - x1) / CellSize;
*ResultY = (y - y1) / CellSize;
return aMap;
}
//
// Determine if the area is the legend list. If so, calculate the line
// number.
//
x1 = StartLegendX + 2;
y1 = EndChoiseY + 3;
x2 = EndLegendX - 2;
y2 = StartCommY - 3;
if ( InRange (x, y, x1, y1, x2, y2) )
{
int Line = (y - (StartMazeY+Offset)) / CellSize;
if (Line >= 4 && (Line & 1) == 0)
{
*ResultY = (Line - 4) >> 1;
return aLegend;
}
}
//
// At this point no legal area has been recognized, so return None.
//
return aNone;
}
int GraphRec::Display (GameMapRec *Map, int EpisodeNr, int MapNr)
{
//
// If the sizes are different from the stored sizes, we have to (re)draw
// our map border.
//
if (Map->MazeSizeX () != SizeX || Map->MazeSizeY () == SizeY)
{
setfillstyle (SOLID_FILL, 0);
setcolor (7);
//
// Calculate the new map area and use these figures to draw the
// rectangle and to erase any surplus areas.
//
int InnerStartX = StartMazeX + 2;
int InnerStartY = StartMazeY + 2;
int InnerEndX = StartMazeX + Map->MazeSizeX ()*CellSize + 2*Offset - 3;
int InnerEndY = StartMazeY + Map->MazeSizeY ()*CellSize + 2*Offset - 3;
//
// First draw the new border.
//
rectangle (InnerStartX - 2, InnerStartY - 2, InnerEndX + 2, InnerEndY + 2);
rectangle (InnerStartX - 1, InnerStartY - 1, InnerEndX + 1, InnerEndY + 1);
//
// Next, check if we have some erasing to do. This is the case if the
// old sizes were larger than the new ones.
//
if (SizeX < Map->MazeSizeX () )
{
bar (InnerEndX + 3, StartMazeY, EndMazeX, EndMazeY);
}
if (SizeY < Map->MazeSizeY () )
{
bar (StartMazeX, InnerEndY + 3, EndMazeX, EndMazeY);
}
//
// Finally, store the new sizes for future use.
//
SizeX = Map->MazeSizeX ();
SizeY = Map->MazeSizeY ();
StartTextY = StartMazeY + SizeY*CellSize + 2*Offset + 2;
}
//
// Display the current episode and map numbers, and the map title.
//
char Buffer [30];
setfillstyle (SOLID_FILL, 0);
bar (StartLevelX, StartLevelY, EndLevelX, EndLevelY);
sprintf (Buffer, "Episode: %d", EpisodeNr+1);
Text (66, 59, 15, Buffer);
sprintf (Buffer, "Level: %d", MapNr);
Text (66, 61, 15, Buffer);
Text (66, 63, 15, Map->Title () );
//
// Now display the map itself.
//
DisplayMap (Map);
//
// Return Ok to indicate success.
//
return errOk;
}
int GraphRec::Modify (GameMapRec *Map, int *Changed, int *Command)
{
//
// Initialize tracking information.
//
unsigned OldObject = 0;
unsigned OldMaze = 0;
int OldX = 0;
int OldY = 0;
int OldArea = aNone;
int Drawing = cFalse;
//
// Reset the change indicator.
//
*Changed = cFalse;
*Command = cNone;
//
// Process mouse actions and key strokes until the editing of this map
// is finished.
//
MouseShow ();
while (*Command == cNone)
{
//
// Process mouse actions.
//
unsigned Buttons;
int PosX;
int PosY;
MousePos (&PosX, &PosY, &Buttons);
//
// Determine the current area the mouse is in and calculate the
// logical coordinates within that area, if needed.
//
int ResultX;
int ResultY;
int Area = DetermineArea (PosX, PosY, &ResultX, &ResultY);
//
// Display cell information, if the mouse is inside the maze display.
// Otherwise, remove the cell information.
//
if (Area == aMap)
{
//
// Retrieve the maze/object values for the current cell.
//
unsigned MazeValue = Map->MazeBlock () [ResultY*SizeX + ResultX];
unsigned ObjectValue = Map->ObjectsBlock () [ResultY*SizeX + ResultX];
//
// Only process if there are changes.
//
if (Area != OldArea || ResultX != OldX || ResultY != OldY || MazeValue != OldMaze || ObjectValue != OldObject)
{
MouseHide ();
//
// Show current position.
//
if (Area != OldArea || ResultX != OldX || ResultY != OldY)
{
CellPosition (StartTextY, ResultX, ResultY);
OldX = ResultX;
OldY = ResultY;
}
//
// Show maze legend of current cell.
//
if (Area != OldArea || OldMaze != MazeValue)
{
LegendInfo (StartTextY, MazeValue, Maze [MazeValue], "Map: ");
OldMaze = MazeValue;
}
//
// Show object legend of current cell.
//
if (Area != OldArea || OldObject != ObjectValue)
{
LegendInfo (StartTextY + 10, ObjectValue, Objects [ObjectValue], "Object:");
OldObject = ObjectValue;
}
MouseShow ();
}
}
else
{
//
// Since the mouse is outside the maze area, hide the information.
//
if (OldArea == aMap)
{
MouseHide ();
ClearLine (StartTextY);
ClearLine (StartTextY + 10);
MouseShow ();
}
}
OldArea = Area;
//
// Process the area if a mouse button has been pressed.
//
if (Buttons != 0 && !Drawing)
{
//
// First wait the buttons to get released, but only if we don't have
// a button press inside the map area. This enables drag and fill.
//
if (Area != aMap && !Drawing)
{
while (Buttons != 0) MousePos (&PosX, &PosY, &Buttons);
}
//
// Now process the area, which can be interpreted as a command.
//
if (Area != aNone)
{
switch (Area)
{
case aMapButton:
if (Legend != cMazeLegend)
{
MouseHide ();
DisplayMazeLegend ();
Legend = cMazeLegend;
MouseShow ();
}
break;
case aObjectButton:
if (Legend != cObjectLegend)
{
MouseHide ();
DisplayObjectLegend ();
Legend = cObjectLegend;
MouseShow ();
}
break;
case aUpButton:
MouseHide ();
if (Legend == cMazeLegend)
{
if (MazeFirst > 0)
{
MazeFirst -= cMaxDisplayLegend;
DisplayMazeLegend ();
}
}
else
{
if (ObjectsFirst > 0)
{
ObjectsFirst -= cMaxDisplayLegend;
DisplayObjectLegend ();
}
}
MouseShow ();
break;
case aDownButton:
MouseHide ();
if (Legend == cMazeLegend)
{
if (MazeFirst+cMaxDisplayLegend < cMaxMazeLegends)
{
MazeFirst += cMaxDisplayLegend;
DisplayMazeLegend ();
}
}
else
{
if (ObjectsFirst+cMaxDisplayLegend < cMaxObjectLegends)
{
ObjectsFirst += cMaxDisplayLegend;
DisplayObjectLegend ();
}
}
MouseShow ();
break;
case aLegend:
MouseHide ();
if (Legend == cMazeLegend)
{
MazeChoise = ResultY + MazeFirst;
ChoiseLegend = cMazeLegend;
DisplayChoise (Maze, MazeChoise);
}
else
{
ObjectChoise = ResultY + ObjectsFirst;
ChoiseLegend = cObjectLegend;
DisplayChoise (Objects, ObjectChoise);
}
MouseShow ();
break;
case aMap:
Drawing = cTrue;
break;
}
}
}
//
// Cancel the drawing state when the mouse buttons are released.
//
if (Buttons == 0)
{
Drawing = cFalse;
}
//
// If we are drawing inside the map area, update the current cell to
// the selected legend value.
//
if (Drawing && Area == aMap)
{
//
// Determine the pointers to the current maze / object value in the
// current cell.
//
unsigned *MazePtr = Map->MazeBlock () + ResultY*SizeX + ResultX;
unsigned *ObjPtr = Map->ObjectsBlock () + ResultY*SizeX + ResultX;
//
// If a maze legend value is selected, update the maze. Otherwise
// update the object value of the current cell.
//
if (ChoiseLegend == cMazeLegend)
{
if (*MazePtr != MazeChoise)
{
MouseHide ();
*MazePtr = MazeChoise;
Box (cSolid, ResultX, ResultY, 0);
DisplayCell (ResultX, ResultY, *MazePtr, *ObjPtr);
*Changed = cTrue;
MouseShow ();
}
}
else
{
if (*ObjPtr != ObjectChoise)
{
MouseHide ();
*ObjPtr = ObjectChoise;
Box (cSolid, ResultX, ResultY, 0);
DisplayCell (ResultX, ResultY, *MazePtr, *ObjPtr);
*Changed = cTrue;
MouseShow ();
}
}
}
//
// Process key strokes.
//
int Key = bioskey (1);
if (Key != 0 && Key != -1)
{
Key = bioskey (0);
switch (Key & 0x00FF)
{
case '0': *Command = cMap0; break;
case '1': *Command = cMap1; break;
case '2': *Command = cMap2; break;
case '3': *Command = cMap3; break;
case '4': *Command = cMap4; break;
case '5': *Command = cMap5; break;
case '6': *Command = cMap6; break;
case '7': *Command = cMap7; break;
case '8': *Command = cMap8; break;
case '9': *Command = cMap9; break;
case 'D': *Command = cDiscard; break;
case 'S': *Command = cStore; break;
case 'e': *Command = cExit; break;
case 'q': *Command = cBreak; break;
case 27: *Command = cEscape; break;
case 'f':
ShowFloors = !ShowFloors;
MouseHide ();
DisplayMap (Map);
MouseShow ();
break;
case 'o':
ShowObjects = !ShowObjects;
MouseHide ();
DisplayMap (Map);
MouseShow ();
break;
case 'C':
Map->Clear ();
*Changed = cTrue;
MouseHide ();
DisplayMap (Map);
MouseShow ();
break;
case 0:
switch (Key >> 8)
{
case 77: *Command = cNextMap; break;
case 75: *Command = cPrevMap; break;
case 73: *Command = cNextEpisode; break;
case 81: *Command = cPrevEpisode; break;
}
break;
}
}
else
{
if (Key == -1) *Command = cBreak;
}
}
MouseHide ();
ClearLine (StartTextY);
ClearLine (StartTextY + 10);
//
// Return Ok to indicate success.
//
return errOk;
}