Mesen-X/Core/Zapper.cpp

104 lines
2.5 KiB
C++

#include "stdafx.h"
#include "Zapper.h"
#include "CPU.h"
#include "PPU.h"
#include "ControlManager.h"
#include "GameServerConnection.h"
#include "IKeyManager.h"
void Zapper::StreamState(bool saving)
{
BaseControlDevice::StreamState(saving);
Stream(_xPosition, _yPosition, _pulled);
}
uint32_t Zapper::GetNetPlayState()
{
//Used by netplay
uint32_t state;
if(_yPosition == -1 || _xPosition == -1) {
state = 0x80000000;
} else {
state = _xPosition | (_yPosition << 8);
}
if(_pulled) {
state |= 0x40000000;
}
return state;
}
uint8_t Zapper::ProcessNetPlayState(uint32_t netplayState)
{
if(netplayState >> 31) {
_xPosition = -1;
_yPosition = -1;
} else {
_xPosition = netplayState & 0xFF;
_yPosition = (netplayState >> 8) & 0xFF;
}
_pulled = ((netplayState >> 30) & 0x01) == 0x01;
return RefreshState();
}
ZapperButtonState Zapper::GetZapperState()
{
ZapperButtonState state;
state.TriggerPressed = _pulled;
int32_t scanline = PPU::GetCurrentScanline();
int32_t cycle = PPU::GetCurrentCycle();
bool lightFound = false;
int radius = (int)EmulationSettings::GetZapperDetectionRadius();
if(_xPosition != -1 && _yPosition != -1) {
for(int y = -radius; y <= radius; y++) {
int yPosition = _yPosition + y;
if(yPosition >= 0 && yPosition < PPU::ScreenHeight) {
for(int x = -radius; x <= radius; x++) {
int xPosition = _xPosition + x;
if(xPosition >= 0 && xPosition < PPU::ScreenWidth) {
if(scanline >= yPosition && (scanline - yPosition <= 20) && (scanline != yPosition || cycle > xPosition) && PPU::GetPixelBrightness(xPosition, yPosition) >= 85) {
//Light cannot be detected if the Y/X position is further ahead than the PPU, or if the PPU drew a dark color
lightFound = true;
break;
}
}
}
}
}
}
state.LightNotDetected = !lightFound;
return state;
}
uint8_t Zapper::RefreshState()
{
if(!GameServerConnection::GetNetPlayDevice(_port)) {
if(ControlManager::IsMouseButtonPressed(MouseButton::RightButton)) {
_xPosition = -1;
_yPosition = -1;
} else {
MousePosition position = ControlManager::GetMousePosition();
_xPosition = position.X;
_yPosition = position.Y;
}
if(!EmulationSettings::CheckFlag(EmulationFlags::InBackground) || EmulationSettings::CheckFlag(EmulationFlags::AllowBackgroundInput)) {
_pulled = ControlManager::IsMouseButtonPressed(MouseButton::LeftButton);
} else {
_pulled = false;
}
}
return GetZapperState().ToByte();
}
uint8_t Zapper::GetPortOutput()
{
return GetControlState();
}