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cc65-Chess
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cc65-Chess/src/apple2/platA2.c

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/*
* platA2.c
* cc65 Chess
*
* Created by Oliver Schmidt, January 2020.
*
*/
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include "../types.h"
#include "../globals.h"
#include "../undo.h"
#include "../frontend.h"
#include "../plat.h"
/*-----------------------------------------------------------------------*/
#define BOARD_PIECE_WIDTH 3
#define BOARD_PIECE_HEIGHT 22
#define CHAR_HEIGHT 8
#define LOG_WINDOW_HEIGHT 23
#define SCREEN_WIDTH 40
#define SCREEN_HEIGHT 192
#define ROP_CONST(val) 0xA980|(val)
#define ROP_BLACK 0xA980
#define ROP_WHITE 0xA9FF
#define ROP_XOR(val) 0x4900|(val)
#define ROP_CPY 0x4980
#define ROP_INV 0x49FF
#define ROP_AND(val) 0x2900|(val)
char rop_Line[2][7] = {{0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F},
{0x00, 0x40, 0x60, 0x70, 0x78, 0x7C, 0x7E}};
char rop_Color[2][2] = {{0x55, 0x2A}, {0xD5, 0xAA}};
extern char hires_CharSet[96][CHAR_HEIGHT];
extern char hires_Pieces[6][2][BOARD_PIECE_WIDTH*BOARD_PIECE_HEIGHT];
void hires_Init(void);
void hires_Done(void);
void hires_Text(char flag);
void hires_Draw(char xpos, char ypos,
char xsize, char ysize,
unsigned rop, char *src);
void hires_Mask(char xpos, char ypos,
char xsize, char ysize,
unsigned rop);
/*-----------------------------------------------------------------------*/
void plat_Drawchar(char x, char y, unsigned rop, char c)
{
hires_Draw(x,y,1,CHAR_HEIGHT,rop,hires_CharSet[c-' ']);
}
/*-----------------------------------------------------------------------*/
void plat_Drawstring(char x, char y, unsigned rop, char *s)
{
while(*s)
plat_Drawchar(x++,y,rop,*s++);
}
/*-----------------------------------------------------------------------*/
void plat_Init()
{
char i;
// Clear the hires screen
hires_Mask(0,0,SCREEN_WIDTH,SCREEN_HEIGHT,ROP_BLACK);
// Show the hires screen
hires_Init();
// Show credits and wait for key press
plat_Drawstring(2,SCREEN_HEIGHT/2-10-CHAR_HEIGHT/2,
ROP_CPY,gszAbout);
plat_Drawstring(2,SCREEN_HEIGHT/2+10-CHAR_HEIGHT/2,
ROP_CPY,"Apple][ version by O. Schmidt, 2020.");
hires_Draw(SCREEN_WIDTH/2-2,SCREEN_HEIGHT/2-50-BOARD_PIECE_HEIGHT/2,
BOARD_PIECE_WIDTH,BOARD_PIECE_HEIGHT,ROP_CPY,
hires_Pieces[KING-1][SIDE_BLACK]);
hires_Draw(SCREEN_WIDTH/2-2,SCREEN_HEIGHT/2+50-BOARD_PIECE_HEIGHT/2,
BOARD_PIECE_WIDTH,BOARD_PIECE_HEIGHT,ROP_CPY,
hires_Pieces[KING-1][SIDE_WHITE]);
plat_ReadKeys(1);
// Draw the board border
hires_Mask( 1, 12,1,8*BOARD_PIECE_HEIGHT+2*2,ROP_CONST(rop_Line[1][2]));
hires_Mask(26, 12,1,8*BOARD_PIECE_HEIGHT+2*2,ROP_CONST(rop_Line[0][2]));
hires_Mask( 2, 12,8*BOARD_PIECE_WIDTH,2, ROP_WHITE);
hires_Mask( 2,190,8*BOARD_PIECE_WIDTH,2, ROP_WHITE);
// Add the A..H and 1..8 tile-keys
for(i=0; i<8; ++i)
{
plat_Drawchar(3+i*BOARD_PIECE_WIDTH,0, ROP_CPY,i+'A');
plat_Drawchar(0,21+i*BOARD_PIECE_HEIGHT,ROP_CPY,i+'1');
}
// Setting this to 0 will not show the "Quit" option in the main menu
gReturnToOS = 1;
}
/*-----------------------------------------------------------------------*/
void plat_UpdateScreen()
{
}
/*-----------------------------------------------------------------------*/
char plat_Menu(char **menuItems, char height, char *scroller)
{
int keyMask;
char i, j;
clrscr();
hires_Text(1);
// Show the title or the scroller if that is more relevant.
cputs(scroller == gszAbout ? menuItems[0] : scroller);
// Select the first item
i = 1;
do
{
// Show all the menu items
for(j=1; j<height; ++j)
{
if(!menuItems[j])
break;
gotoxy(((j-1)%2)*SCREEN_WIDTH/2,((j-1)/2)+1);
// Highlight the selected item
if(j==i)
revers(1);
cprintf(" %s ",menuItems[j]);
if(j==i)
revers(0);
}
// Look for user input
keyMask = plat_ReadKeys(1);
if(keyMask & INPUT_MOTION)
{
switch(keyMask & INPUT_MOTION)
{
case INPUT_LEFT:
if(!--i)
i = j-1;
break;
case INPUT_RIGHT:
if(j == ++i)
i = 1;
break;
case INPUT_UP:
if(i > 2)
i -= 2;
else
i = j-1-(i-1)%2;
break;
case INPUT_DOWN:
if(i < j-2)
i += 2;
else
i = 1+(i-1)%2;
break;
}
}
keyMask &= (INPUT_SELECT | INPUT_BACKUP);
} while(keyMask != INPUT_SELECT && keyMask != INPUT_BACKUP);
hires_Text(0);
// If backing out of the menu, return 0
if(keyMask & INPUT_BACKUP)
return 0;
// Return the selection
return i;
}
/*-----------------------------------------------------------------------*/
// Draw the chess board and possibly clear the log section
void plat_DrawBoard(char clearLog)
{
char i;
if(clearLog)
hires_Mask(27,0,SCREEN_WIDTH-27,SCREEN_HEIGHT,ROP_BLACK);
// Redraw all tiles
for(i=0; i<64; ++i)
plat_DrawSquare(i);
}
/*-----------------------------------------------------------------------*/
// Draw a tile with background and piece on it for positions 0..63
void plat_DrawSquare(char position)
{
unsigned rop;
char inv;
char y = position / 8, x = position & 7;
char piece = gChessBoard[y][x];
char blackWhite = !((x & 1) ^ (y & 1));
if(piece)
{
rop = blackWhite ? ROP_INV : ROP_CPY;
inv = blackWhite ^ (piece & PIECE_WHITE) != 0;
}
else
rop = blackWhite ? ROP_WHITE : ROP_BLACK;
hires_Draw(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT,
BOARD_PIECE_WIDTH,BOARD_PIECE_HEIGHT,rop,
hires_Pieces[(piece&PIECE_DATA)-1][inv]);
// Show the attack numbers
if(gShowAttackBoard)
{
char val[4];
rop = blackWhite ? ROP_INV : ROP_CPY;
sprintf(val,"%02X%d",gChessBoard[y][x],(gChessBoard[y][x]&PIECE_WHITE)>>7);
plat_Drawchar(2+x*BOARD_PIECE_WIDTH,14+(y+1)*BOARD_PIECE_HEIGHT-CHAR_HEIGHT,
rop,(gpAttackBoard[giAttackBoardOffset[position][0]])+'0');
plat_Drawchar(2+(x+1)*BOARD_PIECE_WIDTH-1,14+(y+1)*BOARD_PIECE_HEIGHT-CHAR_HEIGHT,
rop,(gpAttackBoard[giAttackBoardOffset[position][1]])+'0');
plat_Drawstring(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT,rop,val);
}
}
/*-----------------------------------------------------------------------*/
void plat_ShowSideToGoLabel(char side)
{
plat_Drawstring(28,SCREEN_HEIGHT-CHAR_HEIGHT,
side?ROP_CPY:ROP_INV,gszSideLabel[side]);
}
/*-----------------------------------------------------------------------*/
void plat_Highlight(char position, char color, char cursor)
{
char y = position / 8, x = position & 7;
if (cursor && color != HCOLOR_SELECTED)
{
char size = color == HCOLOR_EMPTY ? 6 : color == HCOLOR_INVALID ? 4 : 2;
hires_Mask(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT+size,
1,BOARD_PIECE_HEIGHT-2*size,ROP_XOR(rop_Line[0][size]));
hires_Mask(2+x*BOARD_PIECE_WIDTH+BOARD_PIECE_WIDTH-1,14+y*BOARD_PIECE_HEIGHT+size,
1,BOARD_PIECE_HEIGHT-2*size,ROP_XOR(rop_Line[1][size]));
hires_Mask(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT,
BOARD_PIECE_WIDTH,size,ROP_XOR(0x7F));
hires_Mask(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT+BOARD_PIECE_HEIGHT-size,
BOARD_PIECE_WIDTH,size,ROP_XOR(0x7F));
}
else
{
char set = color == HCOLOR_ATTACK;
char val = cursor ^ x * BOARD_PIECE_WIDTH & 1;
hires_Mask(2+x*BOARD_PIECE_WIDTH,14+y*BOARD_PIECE_HEIGHT,
1,BOARD_PIECE_HEIGHT,ROP_AND(rop_Color[set][!val]));
hires_Mask(2+x*BOARD_PIECE_WIDTH+1,14+y*BOARD_PIECE_HEIGHT,
1,BOARD_PIECE_HEIGHT,ROP_AND(rop_Color[set][val]));
hires_Mask(2+x*BOARD_PIECE_WIDTH+2,14+y*BOARD_PIECE_HEIGHT,
1,BOARD_PIECE_HEIGHT,ROP_AND(rop_Color[set][!val]));
}
}
/*-----------------------------------------------------------------------*/
void plat_ShowMessage(char *str, char)
{
plat_Drawstring(26,0,ROP_CPY,str);
}
/*-----------------------------------------------------------------------*/
void plat_ClearMessage()
{
hires_Mask(26,0,7,CHAR_HEIGHT,ROP_BLACK);
}
/*-----------------------------------------------------------------------*/
void plat_AddToLogWin()
{
char y;
for(y=0; y<=LOG_WINDOW_HEIGHT; ++y)
{
hires_Mask(SCREEN_WIDTH-6,y*CHAR_HEIGHT,
6,CHAR_HEIGHT,ROP_BLACK);
if(undo_FindUndoLine(LOG_WINDOW_HEIGHT-y))
{
frontend_FormatLogString();
plat_Drawstring(SCREEN_WIDTH-6,y*CHAR_HEIGHT,
gColor[0]?ROP_CPY:ROP_INV,gLogStrBuffer);
}
}
}
/*-----------------------------------------------------------------------*/
void plat_AddToLogWinTop()
{
plat_AddToLogWin();
}
/*-----------------------------------------------------------------------*/
int plat_ReadKeys(char blocking)
{
char key = 0;
int keyMask = 0;
if(blocking || kbhit())
key = cgetc();
else
return 0;
switch(key)
{
case CH_CURS_LEFT:
keyMask |= INPUT_LEFT;
break;
case CH_CURS_RIGHT:
keyMask |= INPUT_RIGHT;
break;
case 'O':
case 'o': // Reasonably located on the ][ keyboard
case 0x0B: // No CH_CURS_UP in apple2.h, only in apple2enh.h
keyMask |= INPUT_UP;
break;
case 'L':
case 'l': // Reasonably located on the ][ keyboard
case 0x0A: // No CH_CURS_DOWN in apple2.h, only in apple2enh.h
keyMask |= INPUT_DOWN;
break;
case CH_ESC:
keyMask |= INPUT_BACKUP;
break;
case CH_ENTER:
keyMask |= INPUT_SELECT;
break;
case 'A':
case 'a': // Show Attackers
keyMask |= INPUT_TOGGLE_A;
break;
case 'B':
case 'b': // Board attacks - Show all attacks
keyMask |= INPUT_TOGGLE_B;
break;
case 'D':
case 'd': // Show Defenders
keyMask |= INPUT_TOGGLE_D;
break;
case 'M':
case 'm':
keyMask |= INPUT_MENU;
break;
case 'R':
case 'r':
keyMask |= INPUT_REDO;
break;
case 'U':
case 'u':
keyMask |= INPUT_UNDO;
break;
}
return keyMask;
}
/*-----------------------------------------------------------------------*/
// Only ever gets called if gReturnToOS is true
void plat_Shutdown()
{
hires_Done();
}
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