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Introduces joystick support for the CPC.

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This commit is contained in:
Thomas Harte 2018-06-21 22:46:10 -04:00
parent 370952ab33
commit c248ecde48
1 changed files with 55 additions and 4 deletions
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59
Machines/AmstradCPC/AmstradCPC.cpp
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@ -23,6 +23,7 @@
#include "../../Activity/Source.hpp"
#include "../ConfigurationTarget.hpp"
#include "../CRTMachine.hpp"
#include "../JoystickMachine.hpp"
#include "../KeyboardMachine.hpp"
#include "../../Storage/Tape/Tape.hpp"
@ -565,10 +566,14 @@ class CRTCBusHandler {
/*!
Holds and vends the current keyboard state, acting as the AY's port handler.
Also owns the joysticks.
*/
class KeyboardState: public GI::AY38910::PortHandler {
public:
KeyboardState() : rows_{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff} {}
KeyboardState() {
joysticks_.emplace_back(new Joystick(rows_[9]));
joysticks_.emplace_back(new Joystick(joy2_state_));
}
/*!
Sets the row currently being reported to the AY.
@ -582,7 +587,7 @@ class KeyboardState: public GI::AY38910::PortHandler {
*/
uint8_t get_port_input(bool port_b) {
if(!port_b && row_ < sizeof(rows_)) {
return rows_[row_];
return (row_ == 6) ? rows_[row_] & joy2_state_ : rows_[row_];
}
return 0xff;
@ -604,9 +609,49 @@ class KeyboardState: public GI::AY38910::PortHandler {
memset(rows_, 0xff, sizeof(rows_));
}
std::vector<std::unique_ptr<Inputs::Joystick>> &get_joysticks() {
return joysticks_;
}
private:
uint8_t rows_[10];
size_t row_;
uint8_t joy2_state_ = 0xff;
uint8_t rows_[10] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
size_t row_ = 0;
std::vector<std::unique_ptr<Inputs::Joystick>> joysticks_;
class Joystick: public Inputs::ConcreteJoystick {
public:
Joystick(uint8_t &state) :
ConcreteJoystick({
Input(Input::Up),
Input(Input::Down),
Input(Input::Left),
Input(Input::Right),
Input(Input::Fire, 0),
Input(Input::Fire, 1),
}),
state_(state) {}
void did_set_input(const Input &input, bool is_active) override {
uint8_t mask = 0;
switch(input.type) {
default: return;
case Input::Up: mask = 0x01; break;
case Input::Down: mask = 0x02; break;
case Input::Left: mask = 0x04; break;
case Input::Right: mask = 0x08; break;
case Input::Fire:
if(input.info.control.index >= 2) return;
mask = input.info.control.index ? 0x20 : 0x10;
break;
}
if(is_active) state_ &= ~mask; else state_ |= mask;
}
private:
uint8_t &state_;
};
};
/*!
@ -724,6 +769,7 @@ class ConcreteMachine:
public CPU::Z80::BusHandler,
public ClockingHint::Observer,
public Configurable::Device,
public JoystickMachine::Machine,
public Machine,
public Activity::Source {
public:
@ -1059,6 +1105,11 @@ class ConcreteMachine:
return selection_set;
}
// MARK: - Joysticks
std::vector<std::unique_ptr<Inputs::Joystick>> &get_joysticks() override {
return key_state_.get_joysticks();
}
private:
inline void write_to_gate_array(uint8_t value) {
switch(value >> 6) {