mirror of
https://github.com/OpenRCT2/OpenRCT2
synced 2025-12-24 00:03:11 +01:00
add in game console
This commit is contained in:
IntelOrca
373
src/interface/console.c
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373
src/interface/console.c
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@@ -0,0 +1,373 @@
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#include <SDL_scancode.h>
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#include "../addresses.h"
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#include "../drawing/drawing.h"
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#include "../localisation/localisation.h"
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#include "../platform/platform.h"
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#include "console.h"
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#include "window.h"
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#define CONSOLE_BUFFER_SIZE 1024
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#define CONSOLE_HISTORY_SIZE 64
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#define CONSOLE_INPUT_SIZE 256
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bool gConsoleOpen = false;
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static bool _consoleInitialised = false;
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static int _consoleLeft, _consoleTop, _consoleRight, _consoleBottom;
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static int _lastMainViewportX, _lastMainViewportY;
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static char _consoleBuffer[CONSOLE_BUFFER_SIZE] = { 0 };
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static char *_consoleBufferPointer = _consoleBuffer;
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static char *_consoleViewBufferStart = _consoleBuffer;
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static char _consoleCurrentLine[CONSOLE_INPUT_SIZE];
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static char *_consoleCurrentLinePointer = _consoleCurrentLine;
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static int _consoleCaretTicks;
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static char _consoleHistory[CONSOLE_HISTORY_SIZE][CONSOLE_INPUT_SIZE];
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static int _consoleHistoryIndex = 0;
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static int _consoleHistoryCount = 0;
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static void console_invalidate();
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static void console_write_prompt();
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static void console_update_scroll();
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static void console_clear_input();
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static void console_history_add(const char *src);
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static void console_write_all_commands();
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void console_open()
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{
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gConsoleOpen = true;
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console_update_scroll();
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platform_start_text_input(_consoleCurrentLine, sizeof(_consoleCurrentLine));
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}
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void console_close()
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{
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gConsoleOpen = false;
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console_invalidate();
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platform_stop_text_input();
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}
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void console_toggle()
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{
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if (gConsoleOpen)
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console_close();
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else
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console_open();
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}
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void console_init()
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{
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_consoleInitialised = true;
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console_writeline(OPENRCT2_NAME " " OPENRCT2_VERSION);
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console_writeline("");
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console_write_prompt();
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}
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void console_update()
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{
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if (!_consoleInitialised)
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console_init();
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_consoleLeft = 0;
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_consoleTop = 0;
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_consoleRight = RCT2_GLOBAL(RCT2_ADDRESS_SCREEN_WIDTH, sint16);
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_consoleBottom = 300;
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if (gConsoleOpen) {
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console_invalidate();
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// When scrolling the map, the console pixels get copied... therefore invalidate the screen
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rct_window *mainWindow = window_get_main();
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if (mainWindow != NULL) {
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rct_viewport *mainViewport = mainWindow->viewport;
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if (mainViewport != NULL) {
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if (_lastMainViewportX != mainViewport->view_x || _lastMainViewportY != mainViewport->view_y) {
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_lastMainViewportX = mainViewport->view_x;
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_lastMainViewportY = mainViewport->view_y;
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gfx_invalidate_screen();
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}
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}
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}
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// Remove unwated characters in console input
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unsigned char *ch = (unsigned char*)_consoleCurrentLine;
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while (*ch != 0) {
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if (*ch < 32 || *ch > 126)
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*ch = ' ';
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ch++;
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}
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}
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// Flash the caret
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_consoleCaretTicks = (_consoleCaretTicks + 1) % 30;
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}
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void console_draw(rct_drawpixelinfo *dpi)
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{
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if (!gConsoleOpen)
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return;
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// Set font
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RCT2_GLOBAL(RCT2_ADDRESS_CURRENT_FONT_SPRITE_BASE, uint16) = 224;
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// Background
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gfx_fill_rect(dpi, _consoleLeft, _consoleTop, _consoleRight, _consoleBottom, 0);
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int x = _consoleLeft + 4;
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int y = _consoleTop + 4;
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// Draw previous lines
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char lineBuffer[1 + 256];
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char *ch = _consoleViewBufferStart;
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while (*ch != 0) {
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// Find line break or null terminator
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char *nextLine = ch;
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while (*nextLine != 0 && *nextLine != '\n') {
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nextLine++;
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}
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int lineLength = min(sizeof(lineBuffer) - 1, nextLine - ch);
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strncpy(lineBuffer + 1, ch, lineLength);
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lineBuffer[0] = FORMAT_GREEN;
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lineBuffer[1 + lineLength] = 0;
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gfx_draw_string(dpi, lineBuffer, 255, x, y);
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x = gLastDrawStringX;
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if (*nextLine == '\n') {
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ch = nextLine + 1;
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x = _consoleLeft + 4;
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y += 10;
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} else {
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break;
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}
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}
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// Draw current line
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gfx_draw_string(dpi, _consoleCurrentLine, 255, x, y);
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// Draw caret
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if (_consoleCaretTicks >= 15) {
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memcpy(lineBuffer, _consoleCurrentLine, gTextInputCursorPosition);
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lineBuffer[gTextInputCursorPosition] = 0;
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int caretX = x + gfx_get_string_width(lineBuffer);
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int caretY = y + 10;
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gfx_fill_rect(dpi, caretX, caretY, caretX + 6, caretY + 1, FORMAT_GREEN);
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}
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}
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void console_input(int c)
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{
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switch (c) {
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case SDL_SCANCODE_ESCAPE:
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console_clear_input();
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break;
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case SDL_SCANCODE_RETURN:
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if (_consoleCurrentLine[0] != 0) {
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console_history_add(_consoleCurrentLine);
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console_execute(_consoleCurrentLine);
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console_write_prompt();
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console_clear_input();
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}
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break;
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case SDL_SCANCODE_UP:
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if (_consoleHistoryIndex > 0) {
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_consoleHistoryIndex--;
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memcpy(_consoleCurrentLine, _consoleHistory[_consoleHistoryIndex], 256);
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}
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gTextInputCursorPosition = strlen(_consoleCurrentLine);
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gTextInputLength = gTextInputCursorPosition;
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break;
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case SDL_SCANCODE_DOWN:
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if (_consoleHistoryIndex < _consoleHistoryCount - 1) {
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_consoleHistoryIndex++;
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memcpy(_consoleCurrentLine, _consoleHistory[_consoleHistoryIndex], 256);
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gTextInputCursorPosition = strlen(_consoleCurrentLine);
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gTextInputLength = gTextInputCursorPosition;
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} else {
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_consoleHistoryIndex = _consoleHistoryCount;
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console_clear_input();
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}
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break;
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}
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}
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static void console_invalidate()
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{
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gfx_set_dirty_blocks(_consoleLeft, _consoleTop, _consoleRight, _consoleBottom);
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}
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static void console_write_prompt()
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{
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console_write("OpenRCT2 > ");
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}
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void console_write(const char *src)
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{
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int charactersRemainingInBuffer = CONSOLE_BUFFER_SIZE - (_consoleBufferPointer - _consoleBuffer) - 1;
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int charactersToWrite = strlen(src);
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int bufferShift = charactersToWrite - charactersRemainingInBuffer;
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if (charactersToWrite > charactersRemainingInBuffer) {
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memmove(_consoleBuffer, _consoleBuffer + bufferShift, CONSOLE_BUFFER_SIZE - bufferShift);
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_consoleBufferPointer -= bufferShift;
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}
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strcpy(_consoleBufferPointer, src);
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_consoleBufferPointer += charactersToWrite;
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console_update_scroll();
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}
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void console_writeline(const char *src)
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{
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console_write(src);
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console_write("\n");
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}
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static void console_update_scroll()
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{
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int lines = 0;
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int maxLines = ((_consoleBottom - _consoleTop) / 10) - 1;
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char *ch = strchr(_consoleBuffer, 0);
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while (ch > _consoleBuffer && lines < maxLines) {
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ch--;
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if (*ch == '\n')
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lines++;
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}
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if (*ch == '\n')
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ch++;
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_consoleViewBufferStart = ch;
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}
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void console_clear()
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{
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_consoleBuffer[0] = 0;
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_consoleBufferPointer = _consoleBuffer;
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}
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static void console_clear_input()
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{
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_consoleCurrentLine[0] = 0;
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gTextInputCursorPosition = 0;
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gTextInputLength = 0;
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}
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static void console_history_add(const char *src)
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{
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if (_consoleHistoryCount >= CONSOLE_HISTORY_SIZE) {
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for (int i = 0; i < _consoleHistoryCount - 1; i++)
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memcpy(_consoleHistory[i], _consoleHistory[i + 1], CONSOLE_INPUT_SIZE);
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_consoleHistoryCount--;
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}
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memcpy(_consoleHistory[_consoleHistoryCount++], src, CONSOLE_INPUT_SIZE);
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_consoleHistoryIndex = _consoleHistoryCount;
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}
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static int cc_clear(const char **argv, int argc)
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{
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console_clear();
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return 0;
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}
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static int cc_echo(const char **argv, int argc)
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{
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if (argc > 0)
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console_writeline(argv[0]);
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return 0;
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}
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static int cc_help(const char **argv, int argc)
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{
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console_write_all_commands();
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return 0;
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}
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typedef int (*console_command_func)(const char **argv, int argc);
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typedef struct {
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char *command;
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console_command_func func;
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} console_command;
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console_command console_command_table[] = {
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{ "clear", cc_clear },
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{ "echo", cc_echo },
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{ "help", cc_help }
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};
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static void console_write_all_commands()
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{
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for (int i = 0; i < countof(console_command_table); i++)
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console_writeline(console_command_table[i].command);
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}
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void console_execute(const char *src)
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{
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console_writeline(_consoleCurrentLine);
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int argc = 0;
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int argvCapacity = 8;
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char **argv = malloc(argvCapacity * sizeof(char*));
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const char *start = src;
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const char *end;
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bool inQuotes = false;
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do {
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while (*start == ' ')
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start++;
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if (*start == '"') {
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inQuotes = true;
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start++;
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} else {
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inQuotes = false;
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}
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end = start;
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while (*end != 0) {
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if (*end == ' ' && !inQuotes)
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break;
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if (*end == '"' && inQuotes)
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break;
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end++;
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}
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int length = end - start;
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if (length > 0) {
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char *arg = malloc(length + 1);
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memcpy(arg, start, length);
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arg[length] = 0;
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if (argc >= argvCapacity) {
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argvCapacity *= 2;
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argv = realloc(argv, argvCapacity * sizeof(char*));
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}
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argv[argc] = arg;
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argc++;
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}
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start = end;
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} while (*end != 0);
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if (argc == 0)
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return;
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bool validCommand = false;
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for (int i = 0; i < countof(console_command_table); i++) {
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if (strcmp(argv[0], console_command_table[i].command) == 0) {
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console_command_table[i].func(argv + 1, argc - 1);
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validCommand = true;
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break;
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}
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}
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for (int i = 0; i < argc; i++)
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free(argv[i]);
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free(argv);
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if (!validCommand) {
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char output[] = { FORMAT_RED, "Unknown command. Type help to list available commands." };
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console_writeline(output);
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}
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}
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