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/* gameplaySP
*
* Copyright (C) 2006 Exophase <exophase@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "common.h"
#ifndef __LIBRETRO__
#include "frontend/main.h"
#include "frontend/libpicofe/input.h"
#endif
bool libretro_supports_bitmasks = false;
bool libretro_supports_ff_override = false;
bool libretro_ff_enabled = false;
bool libretro_ff_enabled_prev = false;
unsigned turbo_period = TURBO_PERIOD_MIN;
unsigned turbo_pulse_width = TURBO_PULSE_WIDTH_MIN;
unsigned turbo_a_counter = 0;
unsigned turbo_b_counter = 0;
static u32 old_key = 0;
static retro_input_state_t input_state_cb;
void retro_set_input_state(retro_input_state_t cb) { input_state_cb = cb; }
extern void set_fastforward_override(bool fastforward);
static void trigger_key(u32 key)
{
u32 p1_cnt = read_ioreg(REG_P1CNT);
if((p1_cnt >> 14) & 0x01)
{
u32 key_intersection = (p1_cnt & key) & 0x3FF;
if(p1_cnt >> 15)
{
if(key_intersection == (p1_cnt & 0x3FF))
raise_interrupt(IRQ_KEYPAD);
}
else
{
if(key_intersection)
raise_interrupt(IRQ_KEYPAD);
}
}
}
#ifdef __LIBRETRO__
u32 update_input(void)
{
unsigned i;
uint32_t new_key = 0;
bool turbo_a = false;
bool turbo_b = false;
if (!input_state_cb)
return 0;
if (libretro_supports_bitmasks)
{
int16_t ret = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_MASK);
for (i = 0; i < sizeof(btn_map) / sizeof(map); i++)
new_key |= (ret & (1 << btn_map[i].retropad)) ? btn_map[i].gba : 0;
libretro_ff_enabled = libretro_supports_ff_override &&
(ret & (1 << RETRO_DEVICE_ID_JOYPAD_R2));
turbo_a = (ret & (1 << RETRO_DEVICE_ID_JOYPAD_X));
turbo_b = (ret & (1 << RETRO_DEVICE_ID_JOYPAD_Y));
}
else
{
for (i = 0; i < sizeof(btn_map) / sizeof(map); i++)
new_key |= input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, btn_map[i].retropad) ? btn_map[i].gba : 0;
libretro_ff_enabled = libretro_supports_ff_override &&
input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_R2);
turbo_a = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_X);
turbo_b = input_state_cb(0, RETRO_DEVICE_JOYPAD, 0, RETRO_DEVICE_ID_JOYPAD_Y);
}
/* Handle turbo buttons */
if (turbo_a)
{
new_key |= (turbo_a_counter < turbo_pulse_width) ?
BUTTON_A : 0;
turbo_a_counter++;
if (turbo_a_counter >= turbo_period)
turbo_a_counter = 0;
}
else
turbo_a_counter = 0;
if (turbo_b)
{
new_key |= (turbo_b_counter < turbo_pulse_width) ?
BUTTON_B : 0;
turbo_b_counter++;
if (turbo_b_counter >= turbo_period)
turbo_b_counter = 0;
}
else
turbo_b_counter = 0;
if ((new_key | old_key) != old_key)
trigger_key(new_key);
old_key = new_key;
write_ioreg(REG_P1, (~old_key) & 0x3FF);
/* Handle fast forward button */
if (libretro_ff_enabled != libretro_ff_enabled_prev)
{
set_fastforward_override(libretro_ff_enabled);
libretro_ff_enabled_prev = libretro_ff_enabled;
}
return 0;
}
#else
u32 update_input(void)
{
int actions[IN_BINDTYPE_COUNT] = { 0, };
uint32_t new_key = 0;
unsigned int emu_act;
int which = EACTION_NONE;
in_update(actions);
emu_act = actions[IN_BINDTYPE_EMU];
if (emu_act) {
for (; !(emu_act & 1); emu_act >>= 1, which++)
;
emu_act = which;
}
handle_emu_action(which);
new_key = actions[IN_BINDTYPE_PLAYER12];
if ((new_key | old_key) != old_key)
trigger_key(new_key);
old_key = new_key;
io_registers[REG_P1] = (~old_key) & 0x3FF;
return 0;
}
#endif
#define input_savestate_builder(type) \
void input_##type##_savestate(void) \
{ \
state_mem_##type##_variable(old_key); \
}
input_savestate_builder(read)
input_savestate_builder(write)
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