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Added 2nd fire support to pause #2

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Added 2nd fire support to pause #2

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43 changes: 43 additions & 0 deletions corescape.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -28,11 +28,16 @@
#include "status.h"
#include "intro.h"

#define NOP __asm{nop}
#define SEI __asm{sei}
#define CLI __asm{cli}

static char LevelText[] = S"STAGE 1";
static char GameOverText[] = S"GAMEOVER";

bool trainer_mode, level_skip, level_retry, restart;
bool cheating;
bool second_fire, previous_second_fire;

struct Level
{
Expand Down Expand Up @@ -70,6 +75,33 @@ const char PausedColors[] = {
VCOL_ORANGE, VCOL_RED, VCOL_PURPLE, VCOL_BLUE
};

void check_second_fire(void)
{
byte* JoyReg = (byte*)0xDC00;
byte* CtrlPort = (byte*)0xD419;
byte b;

previous_second_fire = second_fire;

SEI
JoyReg[2] = 0xC0;
NOP
b = JoyReg[0];
b = b & 0b00111111;
b = b | 0b10000000;
JoyReg[0] = b;
for (byte c = 0; c < 20; c++)
NOP

b = CtrlPort[0];
CLI
if (b < 16) second_fire = true;
else second_fire = false;
JoyReg[0] = 0x7F;
JoyReg[2] = 0xFF;
}


void game_pause(void)
{
// Silence during pause
Expand Down Expand Up @@ -107,6 +139,12 @@ void game_pause(void)
keyb_poll();
if (keyb_key == (KSCAN_SPACE | KSCAN_QUAL_DOWN))
break;

// ... or second fire to continue
check_second_fire();
if (second_fire && !previous_second_fire)
break;

}

// Hide pause text sprited
Expand Down Expand Up @@ -161,8 +199,13 @@ void game_keyboard(void)

}
}
//check Second Fire
check_second_fire();
if (second_fire && !previous_second_fire)
game_pause();
}


void game_play(void)
{
// Undo all cheat modes at a new start
Expand Down
2 changes: 1 addition & 1 deletion gamemusic.c
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Expand Up @@ -50,5 +50,5 @@ void music_toggle(void)

void music_volume(char volume)
{
*(volatile char *)0xa15d = volume;
*(volatile char*)0xD418 = volume;
}
2 changes: 1 addition & 1 deletion intro.cpp
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Expand Up @@ -236,7 +236,7 @@ static const char ScrollText[] =
S"--- CODING AND GRAPHICS BY \y83DR.MORTAL WOMBAT\y80 "
S"--- JOYSTICK IN PORT \y812\y80 "
S"--- BUTTON TO START "
S"--- SPACE TO PAUSE "
S"--- SPACE OR 2ND FIRE TO PAUSE "
S"--- CHEATS: \y81S\y82KIP, \y81T\y82RAINER, \y81L\y82IVE, \y81R\y82ETRY, \y81H\y82ALFSPEED \y80"
S"--- NO HIGHSCORE WHEN CHEATING :) --- ";

Expand Down