mirror of
https://github.com/GearsProgress/Poke_Transporter_GB.git
synced 2026-07-15 07:44:11 -05:00
351 lines
7.3 KiB
C++
351 lines
7.3 KiB
C++
// Loosely based on code created by StevenChaulk
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// Source: https://github.com/stevenchaulk/arduino-poke-gen2
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#include <tonc.h>
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#include <stdarg.h>
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#include <inttypes.h>
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#include "libraries/nanoprintf/nanoprintf.h"
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#include "libstd_replacements.h"
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#include "link_handler.h"
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#include "script_array.h"
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#include "dbg/debug_mode.h"
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#include "interrupt.h"
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#include "text_engine.h"
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#include "global_frame_controller.h"
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#include "background_engine.h"
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#include "sprite_data.h"
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#include "text_data_table.h"
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#include "libraries/Pokemon-Gen3-to-Gen-X/include/save.h"
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#include "flash_mem.h"
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#include "FileContainerReader.h"
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#include "GB_Payloads_chunk0_lz10_bin.h"
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#include "GB_Payloads.h"
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LinkSPI linkSPIInstance;
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LinkSPI *linkSPI = &linkSPIInstance;
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// Here's a compilation check to ensure that the size of these structs match our expectations.
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// Just update it if you changed the struct members. The data-generator process prints their actual sizes.
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static_assert(sizeof(struct GB_ROM) == 136);
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static_assert(sizeof(struct ROM_DATA) == 160);
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LinkConnection globalLinkCable;
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void linkCableIRQ()
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{
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if (!globalLinkCable.earlyExit())
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{
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globalLinkCable.exchangeBytes();
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if (g_debug_options.print_link_data)
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{
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globalLinkCable.printData();
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}
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if (g_debug_options.write_cable_data_to_save)
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{
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globalLinkCable.writeData();
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}
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globalLinkCable.handleStateLogic();
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}
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}
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void LinkConnection::setup(const u16 *debug_charset)
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{
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linkSPI->activate(LinkSPI::Mode::MASTER_256KBPS);
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linkSPI->setWaitModeActive(false);
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this->debug_charset = debug_charset;
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{
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u8 general_text_table_buffer[2048];
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text_data_table general_text(general_text_table_buffer);
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general_text.decompress(get_compressed_text_table(GENERAL_INDEX));
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ptgb_write_textbox(general_text.get_text_entry(GENERAL_connecting), true, false,
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GENERAL_INDEX, GENERAL_connecting, false);
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}
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create_textbox(0, 0, 138, 128, false);
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}
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void LinkConnection::startConnection(CompositeState startState)
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{
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compState = startState;
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switch (startState)
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{
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case INITIAL_CONNECTION:
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subState = CLOCK;
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REG_TM3D = -0x4000 / 60;
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REG_TM3CNT = TM_FREQ_1024 | TM_ENABLE;
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irq_enable(II_TIMER3);
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break;
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default:
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break;
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}
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}
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void LinkConnection::exchangeBytes()
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{
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/*
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int timeout_frames = 10;
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inData = linkSPI->transfer(outData, [&timeout_frames]()
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{
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// In the mGBA Lua bridge, replies arrive via emulator callbacks between frames.
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// Waiting here prevents valid bytes from being reported as timeouts.
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global_next_frame();
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return --timeout_frames <= 0; });
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*/
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inData = linkSPI->transfer(outData);
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}
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void LinkConnection::printData()
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{
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n2hexstr(&line[0], compState & 0xFF, 2);
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line[2] = ':';
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n2hexstr(&line[3], compStateCounter & 0xFFFF, 4);
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line[7] = '|';
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n2hexstr(&line[8], subState & 0xFF, 2);
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line[10] = ':';
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n2hexstr(&line[11], subStateCounter & 0xFFFF, 4);
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line[15] = '|';
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line[16] = 'i';
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n2hexstr(&line[17], inData & 0xFF, 2);
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line[19] = '|';
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line[20] = 'o';
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n2hexstr(&line[21], outData & 0xFF, 2);
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line[23] = '\0';
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scroll_text(true, tte_get_context(), false, 8, 8, 138, 135);
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ptgb_write_debug(this->debug_charset, line, true);
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}
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void LinkConnection::writeData()
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{
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global_memory_buffer[link_cable_array_index] = inData;
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link_cable_array_index++;
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global_memory_buffer[link_cable_array_index] = outData;
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link_cable_array_index++;
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if (link_cable_array_index >= 0x1000)
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{
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copy_ram_to_save(&global_memory_buffer[0], 0x1000 * link_cable_memory_section_index, 0x1000);
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link_cable_memory_section_index++;
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link_cable_array_index = link_cable_array_index % 0x1000;
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}
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}
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void LinkConnection::handleStateLogic()
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{
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prevCompState = compState;
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prevSubState = subState;
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switch (compState)
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{
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case INITIAL_CONNECTION:
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logicState_initConnection();
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break;
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default:
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break;
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}
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if (prevSubState != subState)
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{
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subStateCounter = 0;
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}
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else
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{
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subStateCounter++;
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}
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if (prevCompState != compState)
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{
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compStateCounter = 0;
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}
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else
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{
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compStateCounter++;
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}
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}
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bool LinkConnection::earlyExit()
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{
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if (g_debug_options.print_link_data && key_hit(KEY_LEFT))
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{
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globalLinkCable.paused = true;
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}
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else if (g_debug_options.print_link_data && key_hit(KEY_RIGHT))
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{
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globalLinkCable.paused = false;
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}
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if (globalLinkCable.paused && g_debug_options.print_link_data)
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{
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if (key_hit(KEY_A))
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{
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return false; // Even if paused, run once
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}
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}
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return globalLinkCable.paused;
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}
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void LinkConnection::logicState_initConnection()
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{
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switch (subState)
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{
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case CLOCK:
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if (inData == 0xFE)
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{
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subState = SAVE_SUCCESS;
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outData = 0x00;
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}
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else
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{
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outData = 0x01;
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}
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break;
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case SAVE_SUCCESS:
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if (inData == 0x60 || inData == 0x61)
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{
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subState = MENU_OPEN;
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outData = inData;
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}
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else
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{
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outData = 0x00;
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}
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break;
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case MENU_OPEN:
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if (inData == 0xD0 || inData == 0x61)
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{
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if (inData == 0xD0)
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{
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gen = 1;
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outData = 0xD4;
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}
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else if (inData == 0x61)
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{
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gen = 2;
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outData = 0x61;
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}
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load_universal_payload();
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subState = MENU_SUCCESS;
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}
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break;
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case MENU_SUCCESS:
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if (inData == 0xFE)
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{
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subState = WAIT_FOR_TRADE;
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}
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outData = inData;
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break;
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case WAIT_FOR_TRADE:
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if (inData == 0xFD)
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{
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REG_TM3D = -0x0040;
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subState = TRADE_PREAMBLE;
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outData = 0x00;
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}
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else
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{
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outData = inData;
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}
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break;
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case TRADE_PREAMBLE:
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if (subStateCounter < 2)
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{
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outData = 0x00;
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}
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else if (subStateCounter < 9)
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{
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outData = 0xFD;
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}
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else
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{
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subState = TRADE;
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outData = 0xFD;
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};
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break;
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case TRADE:
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if (subStateCounter > curr_payload_size)
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{
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if (this->gen == 2)
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{
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subState = MAIL;
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}
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else
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{
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subState = WAIT_FOR_PAYLOAD;
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}
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}
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outData = curr_payload[subStateCounter];
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break;
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case MAIL:
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if (subStateCounter >= 0x186)
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{
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subState = WAIT_FOR_PAYLOAD;
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}
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break;
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case WAIT_FOR_PAYLOAD:
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if (inData == 0xFD)
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{
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subState = GET_CHECKSUM;
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g_debug_options.print_link_data = true;
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paused = true;
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}
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outData = 0x00;
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break;
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case GET_CHECKSUM:
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if (inData != 0xFD)
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{
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dataOutBuffer[dataOutBufferCurrIndex] = inData;
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dataOutBufferCurrIndex++;
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outData = 0x01;
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}
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else if (inData == 0xFD && dataOutBufferCurrIndex > 0)
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{
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subState = END;
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}
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else
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{
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outData = 0xFD;
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}
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break;
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case END:
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irq_delete(II_TIMER3);
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break;
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default:
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outData = inData;
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break;
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}
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}
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void LinkConnection::load_universal_payload()
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{
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u32 fileSize;
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u8 decompressionBuffer[0x1000];
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const u8 *chunkList[] = { (const u8*)GB_Payloads_chunk0_lz10_bin };
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FileContainerReader reader(chunkList, 1);
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const u32 fileIndex = (this->gen == 1) ? (u32)GB_PayloadsFiles::UNIVERSALPAYLOADGEN1 : (u32)GB_PayloadsFiles::UNIVERSALPAYLOADGEN2;
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reader.init(decompressionBuffer, sizeof(decompressionBuffer));
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fileSize = reader.getFileSize(fileIndex);
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reader.seekToFile(fileIndex);
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reader.read(this->curr_payload, fileSize);
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this->curr_payload_size = fileSize;
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} |