mirror of
https://github.com/MoleskiCoder/EightBit.git
synced 2024-11-19 02:08:25 +00:00
42 lines
1.1 KiB
C++
42 lines
1.1 KiB
C++
#pragma once
|
|
|
|
#include <cstdint>
|
|
|
|
#include <Bus.h>
|
|
#include <Processor.h>
|
|
|
|
namespace EightBit {
|
|
namespace GameBoy {
|
|
class ObjectAttribute {
|
|
public:
|
|
ObjectAttribute() {}
|
|
ObjectAttribute(Bus& bus, uint16_t address, int height) {
|
|
m_positionY = bus.peek(address);
|
|
m_positionX = bus.peek(address + 1);
|
|
m_pattern = bus.peek(address + 2);
|
|
if (height == 16)
|
|
m_pattern >>= 1;
|
|
m_flags = bus.peek(address + 3);
|
|
}
|
|
|
|
uint8_t positionY() const { return m_positionY; }
|
|
uint8_t positionX() const { return m_positionX; }
|
|
uint8_t pattern() const { return m_pattern; }
|
|
uint8_t flags() const { return m_flags; }
|
|
|
|
uint8_t priority() const { return flags() & Processor::Bit7; }
|
|
|
|
bool highPriority() const { return priority() != 0; }
|
|
bool lowPriority() const { return priority() == 0; }
|
|
bool flipY() const { return (flags() & Processor::Bit6) != 0; }
|
|
bool flipX() const { return (flags() & Processor::Bit5) != 0; }
|
|
int palette() const { return (flags() & Processor::Bit4) >> 3; }
|
|
|
|
private:
|
|
uint8_t m_positionY;
|
|
uint8_t m_positionX;
|
|
uint8_t m_pattern;
|
|
uint8_t m_flags;
|
|
};
|
|
}
|
|
} |