convert to LF line-endings

This commit is contained in:
2024-04-13 13:02:18 +10:00
parent 571a7d6bb1
commit 496186d101

View File

@@ -1,383 +1,383 @@
#include <SDL2/SDL.h> #include <SDL2/SDL.h>
#include <SDL2/SDL_image.h> #include <SDL2/SDL_image.h>
#include <cstdio> #include <cstdio>
#include <cmath> #include <cmath>
#include <memory.h> #include <memory.h>
#define CHARWIDTH 8 #define CHARWIDTH 8
#define CHARHEIGHT 16 #define CHARHEIGHT 16
enum class EColour : unsigned char enum class EColour : unsigned char
{ {
BLACK, BLACK,
BLUE, BLUE,
GREEN, GREEN,
CYAN, CYAN,
RED, RED,
MEGENTA, MEGENTA,
BROWN, BROWN,
LTGREY, LTGREY,
DKGREY, DKGREY,
LTBLUE, LTBLUE,
LTGREEN, LTGREEN,
LTCYAN, LTCYAN,
LTRED, LTRED,
LTMEGENTA, LTMEGENTA,
YELLOW, YELLOW,
WHITE WHITE
}; };
SDL_Colour g_aColourTable[] = SDL_Colour g_aColourTable[] =
{ {
{ 0x00, 0x00, 0x00, 0xFF }, // BLACK { 0x00, 0x00, 0x00, 0xFF }, // BLACK
{ 0x00, 0x00, 0xAA, 0xFF }, // BLUE { 0x00, 0x00, 0xAA, 0xFF }, // BLUE
{ 0x00, 0xAA, 0x00, 0xFF }, // GREEN { 0x00, 0xAA, 0x00, 0xFF }, // GREEN
{ 0x00, 0xAA, 0xAA, 0xFF }, // CYAN { 0x00, 0xAA, 0xAA, 0xFF }, // CYAN
{ 0xAA, 0x00, 0x00, 0xFF }, // RED { 0xAA, 0x00, 0x00, 0xFF }, // RED
{ 0xAA, 0x00, 0xAA, 0xFF }, // MEGENTA { 0xAA, 0x00, 0xAA, 0xFF }, // MEGENTA
{ 0xAA, 0x55, 0x00, 0xFF }, // BROWN { 0xAA, 0x55, 0x00, 0xFF }, // BROWN
{ 0xAA, 0xAA, 0xAA, 0xFF }, // LTGREY { 0xAA, 0xAA, 0xAA, 0xFF }, // LTGREY
{ 0x55, 0x55, 0x55, 0xFF }, // DKGREY { 0x55, 0x55, 0x55, 0xFF }, // DKGREY
{ 0x55, 0x55, 0xFF, 0xFF }, // BLUE { 0x55, 0x55, 0xFF, 0xFF }, // BLUE
{ 0x55, 0xFF, 0x55, 0xFF }, // GREEN { 0x55, 0xFF, 0x55, 0xFF }, // GREEN
{ 0x55, 0xFF, 0xFF, 0xFF }, // CYAN { 0x55, 0xFF, 0xFF, 0xFF }, // CYAN
{ 0xFF, 0x55, 0x55, 0xFF }, // RED { 0xFF, 0x55, 0x55, 0xFF }, // RED
{ 0xFF, 0x55, 0xFF, 0xFF }, // MEGENTA { 0xFF, 0x55, 0xFF, 0xFF }, // MEGENTA
{ 0xFF, 0xFF, 0x55, 0xFF }, // YELLOW { 0xFF, 0xFF, 0x55, 0xFF }, // YELLOW
{ 0xFF, 0xFF, 0xFF, 0xFF } // WHITE { 0xFF, 0xFF, 0xFF, 0xFF } // WHITE
}; };
struct SChar struct SChar
{ {
unsigned char character; unsigned char character;
EColour bgColour; EColour bgColour;
EColour fgColour; EColour fgColour;
bool blinking; bool blinking;
}; };
inline int clampi ( int a_iVal, int a_iMin, int a_iMax ) inline int clampi ( int a_iVal, int a_iMin, int a_iMax )
{ {
return ( a_iVal < a_iMin ) ? a_iMin : ( a_iVal > a_iMax ) ? a_iMax : a_iVal; return ( a_iVal < a_iMin ) ? a_iMin : ( a_iVal > a_iMax ) ? a_iMax : a_iVal;
} }
static Uint32 TimerCallback ( Uint32 a_uiInterval, void* a_pParam ) static Uint32 TimerCallback ( Uint32 a_uiInterval, void* a_pParam )
{ {
SDL_Event event; SDL_Event event;
SDL_UserEvent userEvent; SDL_UserEvent userEvent;
userEvent.type = SDL_USEREVENT; userEvent.type = SDL_USEREVENT;
userEvent.code = 0; userEvent.code = 0;
userEvent.data1 = nullptr; userEvent.data1 = nullptr;
userEvent.data2 = nullptr; userEvent.data2 = nullptr;
event.type = SDL_USEREVENT; event.type = SDL_USEREVENT;
event.user = userEvent; event.user = userEvent;
SDL_PushEvent ( &event ); SDL_PushEvent ( &event );
return a_uiInterval; return a_uiInterval;
} }
int main ( int argc, char** argv ) int main ( int argc, char** argv )
{ {
if ( SDL_Init ( SDL_INIT_VIDEO ) < 0 ) if ( SDL_Init ( SDL_INIT_VIDEO ) < 0 )
{ {
return -1; return -1;
} }
if ( !( IMG_Init ( IMG_INIT_PNG ) & IMG_INIT_PNG ) ) if ( !( IMG_Init ( IMG_INIT_PNG ) & IMG_INIT_PNG ) )
{ {
SDL_Quit (); SDL_Quit ();
return -1; return -1;
} }
SDL_Window* pWindow = nullptr; SDL_Window* pWindow = nullptr;
SDL_Renderer* pRenderer = nullptr; SDL_Renderer* pRenderer = nullptr;
if ( SDL_CreateWindowAndRenderer ( 640, 400, 0, &pWindow, &pRenderer ) < 0 ) if ( SDL_CreateWindowAndRenderer ( 640, 400, 0, &pWindow, &pRenderer ) < 0 )
{ {
IMG_Quit (); IMG_Quit ();
SDL_Quit (); SDL_Quit ();
return -1; return -1;
} }
SDL_SetWindowTitle ( pWindow, "EnDOOMed" ); SDL_SetWindowTitle ( pWindow, "EnDOOMed" );
SDL_Texture* pCodepage = IMG_LoadTexture ( pRenderer, "codepage.png" ); SDL_Texture* pCodepage = IMG_LoadTexture ( pRenderer, "codepage.png" );
if ( pCodepage == nullptr ) if ( pCodepage == nullptr )
{ {
SDL_DestroyRenderer ( pRenderer ); SDL_DestroyRenderer ( pRenderer );
SDL_DestroyWindow ( pWindow ); SDL_DestroyWindow ( pWindow );
IMG_Quit (); IMG_Quit ();
SDL_Quit (); SDL_Quit ();
return -1; return -1;
} }
SChar aDisplay[2000]; SChar aDisplay[2000];
memset ( aDisplay, 0, sizeof(aDisplay) ); memset ( aDisplay, 0, sizeof(aDisplay) );
FILE* pFile = fopen ( "ENDOOM.bin", "rb" ); FILE* pFile = fopen ( "ENDOOM.bin", "rb" );
if ( pFile == nullptr ) if ( pFile == nullptr )
{ {
SDL_DestroyTexture ( pCodepage ); SDL_DestroyTexture ( pCodepage );
SDL_DestroyRenderer ( pRenderer ); SDL_DestroyRenderer ( pRenderer );
SDL_DestroyWindow ( pWindow ); SDL_DestroyWindow ( pWindow );
IMG_Quit (); IMG_Quit ();
SDL_Quit (); SDL_Quit ();
return -1; return -1;
} }
for ( int i = 0; i < 2000; ++i ) for ( int i = 0; i < 2000; ++i )
{ {
SChar& currentCharacter = aDisplay[i]; SChar& currentCharacter = aDisplay[i];
unsigned char ucSpecial; unsigned char ucSpecial;
fread ( &currentCharacter.character, sizeof(unsigned char), 1, pFile ); fread ( &currentCharacter.character, sizeof(unsigned char), 1, pFile );
fread ( &ucSpecial, sizeof(unsigned char), 1, pFile ); fread ( &ucSpecial, sizeof(unsigned char), 1, pFile );
currentCharacter.bgColour = EColour(( ucSpecial & 112 ) >> 4); currentCharacter.bgColour = EColour(( ucSpecial & 112 ) >> 4);
currentCharacter.fgColour = EColour(ucSpecial & 15); currentCharacter.fgColour = EColour(ucSpecial & 15);
currentCharacter.blinking = ( ucSpecial & 128 > 0 ) ? true : false; currentCharacter.blinking = ( ucSpecial & 128 > 0 ) ? true : false;
} }
SDL_AddTimer ( 400, TimerCallback, nullptr ); SDL_AddTimer ( 400, TimerCallback, nullptr );
SChar leftBrush; SChar leftBrush;
leftBrush.character = 219; leftBrush.character = 219;
leftBrush.bgColour = EColour::BLACK; leftBrush.bgColour = EColour::BLACK;
leftBrush.fgColour = EColour::LTGREY; leftBrush.fgColour = EColour::LTGREY;
leftBrush.blinking = false; leftBrush.blinking = false;
SChar rightBrush; SChar rightBrush;
rightBrush.character = ' '; rightBrush.character = ' ';
rightBrush.bgColour = EColour::BLACK; rightBrush.bgColour = EColour::BLACK;
rightBrush.fgColour = EColour::LTGREY; rightBrush.fgColour = EColour::LTGREY;
rightBrush.blinking = false; rightBrush.blinking = false;
bool bMouseLeft = false, bMouseRight = false; bool bMouseLeft = false, bMouseRight = false;
int iMousePrevX = 0, iMousePrevY = 0; int iMousePrevX = 0, iMousePrevY = 0;
int iMouseX = 0, iMouseY = 0; int iMouseX = 0, iMouseY = 0;
bool bMouseInWindow = false; bool bMouseInWindow = false;
bool bValidRender = false; bool bValidRender = false;
bool bBlinkState = true; bool bBlinkState = true;
bool bRunning = true; bool bRunning = true;
SDL_Event event; SDL_Event event;
while ( bRunning ) while ( bRunning )
{ {
iMousePrevX = iMouseX; iMousePrevX = iMouseX;
iMousePrevY = iMouseY; iMousePrevY = iMouseY;
SDL_PumpEvents (); SDL_PumpEvents ();
if ( SDL_WaitEvent ( &event ) ) if ( SDL_WaitEvent ( &event ) )
{ {
do do
{ {
switch ( event.type ) switch ( event.type )
{ {
case ( SDL_QUIT ): case ( SDL_QUIT ):
{ {
bRunning = false; bRunning = false;
break; break;
} }
case ( SDL_USEREVENT ): case ( SDL_USEREVENT ):
{ {
bBlinkState = !bBlinkState; bBlinkState = !bBlinkState;
bValidRender = false; bValidRender = false;
break; break;
} }
case ( SDL_MOUSEBUTTONDOWN ): case ( SDL_MOUSEBUTTONDOWN ):
{ {
if ( event.button.button == SDL_BUTTON_LEFT ) if ( event.button.button == SDL_BUTTON_LEFT )
{ {
bMouseLeft = true; bMouseLeft = true;
} }
else else
if ( event.button.button == SDL_BUTTON_RIGHT ) if ( event.button.button == SDL_BUTTON_RIGHT )
{ {
bMouseRight = true; bMouseRight = true;
} }
break; break;
} }
case ( SDL_MOUSEBUTTONUP ): case ( SDL_MOUSEBUTTONUP ):
{ {
if ( event.button.button == SDL_BUTTON_LEFT ) if ( event.button.button == SDL_BUTTON_LEFT )
{ {
bMouseLeft = false; bMouseLeft = false;
} }
else else
if ( event.button.button == SDL_BUTTON_RIGHT ) if ( event.button.button == SDL_BUTTON_RIGHT )
{ {
bMouseRight = false; bMouseRight = false;
} }
break; break;
} }
case ( SDL_MOUSEMOTION ): case ( SDL_MOUSEMOTION ):
{ {
iMouseX = event.motion.x; iMouseX = event.motion.x;
iMouseY = event.motion.y; iMouseY = event.motion.y;
break; break;
} }
case ( SDL_WINDOWEVENT ): case ( SDL_WINDOWEVENT ):
{ {
switch ( event.window.event ) switch ( event.window.event )
{ {
case ( SDL_WINDOWEVENT_LEAVE ): case ( SDL_WINDOWEVENT_LEAVE ):
{ {
bMouseInWindow = false; bMouseInWindow = false;
break; break;
}; };
case ( SDL_WINDOWEVENT_ENTER ): case ( SDL_WINDOWEVENT_ENTER ):
{ {
bMouseInWindow = true; bMouseInWindow = true;
break; break;
}; };
}; };
break; break;
} }
} }
} }
while ( SDL_PollEvent ( &event ) > 0 ); while ( SDL_PollEvent ( &event ) > 0 );
} }
if ( bMouseInWindow && ( bMouseLeft || bMouseRight ) ) if ( bMouseInWindow && ( bMouseLeft || bMouseRight ) )
{ {
int iFromX = clampi ( iMouseX / CHARWIDTH, 0, 79 ); int iFromX = clampi ( iMouseX / CHARWIDTH, 0, 79 );
int iFromY = clampi ( iMouseY / CHARHEIGHT, 0, 24 ); int iFromY = clampi ( iMouseY / CHARHEIGHT, 0, 24 );
int iToX = clampi ( iMousePrevX / CHARWIDTH, 0, 79 ); int iToX = clampi ( iMousePrevX / CHARWIDTH, 0, 79 );
int iToY = clampi ( iMousePrevY / CHARHEIGHT, 0, 24 ); int iToY = clampi ( iMousePrevY / CHARHEIGHT, 0, 24 );
SChar* srcChar = nullptr; SChar* srcChar = nullptr;
if ( bMouseLeft ) if ( bMouseLeft )
{ {
srcChar = &leftBrush; srcChar = &leftBrush;
} }
else else
if ( bMouseRight ) if ( bMouseRight )
{ {
srcChar = &rightBrush; srcChar = &rightBrush;
} }
if ( iToX == iFromX && iToY == iFromY ) if ( iToX == iFromX && iToY == iFromY )
{ {
SChar& dstChar = aDisplay[iToX + iToY * 80]; SChar& dstChar = aDisplay[iToX + iToY * 80];
dstChar.blinking = srcChar->blinking; dstChar.blinking = srcChar->blinking;
dstChar.bgColour = srcChar->bgColour; dstChar.bgColour = srcChar->bgColour;
dstChar.fgColour = srcChar->fgColour; dstChar.fgColour = srcChar->fgColour;
dstChar.character = srcChar->character; dstChar.character = srcChar->character;
} }
else else
{ {
int iTemp; int iTemp;
bool bSteep = labs ( iToY - iFromY ) > labs ( iToX - iFromX ); bool bSteep = labs ( iToY - iFromY ) > labs ( iToX - iFromX );
if ( bSteep ) if ( bSteep )
{ {
iTemp = iFromY; iTemp = iFromY;
iFromY = iFromX; iFromY = iFromX;
iFromX = iTemp; iFromX = iTemp;
iTemp = iToY; iTemp = iToY;
iToY = iToX; iToY = iToX;
iToX = iTemp; iToX = iTemp;
} }
if ( iFromX > iToX ) if ( iFromX > iToX )
{ {
iTemp = iToX; iTemp = iToX;
iToX = iFromX; iToX = iFromX;
iFromX = iTemp; iFromX = iTemp;
iTemp = iToY; iTemp = iToY;
iToY = iFromY; iToY = iFromY;
iFromY = iTemp; iFromY = iTemp;
} }
int iDeltaX = iToX - iFromX; int iDeltaX = iToX - iFromX;
int iDeltaY = labs ( iToY - iFromY ); int iDeltaY = labs ( iToY - iFromY );
int iError = iDeltaX / 2; int iError = iDeltaX / 2;
int iY = iFromY; int iY = iFromY;
int iYStep = ( iFromY < iToY ) ? 1 : -1; int iYStep = ( iFromY < iToY ) ? 1 : -1;
for ( int iX = iFromX; iX <= iToX; ++iX ) for ( int iX = iFromX; iX <= iToX; ++iX )
{ {
if ( bSteep ) if ( bSteep )
{ {
SChar& dstChar = aDisplay[iY + iX * 80]; SChar& dstChar = aDisplay[iY + iX * 80];
dstChar.blinking = srcChar->blinking; dstChar.blinking = srcChar->blinking;
dstChar.bgColour = srcChar->bgColour; dstChar.bgColour = srcChar->bgColour;
dstChar.fgColour = srcChar->fgColour; dstChar.fgColour = srcChar->fgColour;
dstChar.character = srcChar->character; dstChar.character = srcChar->character;
} }
else else
{ {
SChar& dstChar = aDisplay[iX + iY * 80]; SChar& dstChar = aDisplay[iX + iY * 80];
dstChar.blinking = srcChar->blinking; dstChar.blinking = srcChar->blinking;
dstChar.bgColour = srcChar->bgColour; dstChar.bgColour = srcChar->bgColour;
dstChar.fgColour = srcChar->fgColour; dstChar.fgColour = srcChar->fgColour;
dstChar.character = srcChar->character; dstChar.character = srcChar->character;
} }
iError -= iDeltaY; iError -= iDeltaY;
if ( iError < 0 ) if ( iError < 0 )
{ {
iY += iYStep; iY += iYStep;
iError += iDeltaX; iError += iDeltaX;
} }
} }
} }
bValidRender = false; bValidRender = false;
} }
if ( !bValidRender ) if ( !bValidRender )
{ {
SDL_SetRenderDrawColor ( pRenderer, 48, 48, 48, 255 ); SDL_SetRenderDrawColor ( pRenderer, 48, 48, 48, 255 );
SDL_RenderClear ( pRenderer ); SDL_RenderClear ( pRenderer );
SDL_Rect src, dst; SDL_Rect src, dst;
src.w = CHARWIDTH; src.w = CHARWIDTH;
src.h = CHARHEIGHT; src.h = CHARHEIGHT;
dst.w = CHARWIDTH; dst.w = CHARWIDTH;
dst.h = CHARHEIGHT; dst.h = CHARHEIGHT;
int iX = 0, iY = 0; int iX = 0, iY = 0;
for ( int i = 0; i < 2000; ++i ) for ( int i = 0; i < 2000; ++i )
{ {
SChar& currentCharacter = aDisplay[i]; SChar& currentCharacter = aDisplay[i];
SDL_Colour& currentBgColour = g_aColourTable[(unsigned char)aDisplay[i].bgColour]; SDL_Colour& currentBgColour = g_aColourTable[(unsigned char)aDisplay[i].bgColour];
SDL_Colour& currentFgColour = g_aColourTable[(unsigned char)aDisplay[i].fgColour]; SDL_Colour& currentFgColour = g_aColourTable[(unsigned char)aDisplay[i].fgColour];
src.x = ( currentCharacter.character % 32 ) * CHARWIDTH; src.x = ( currentCharacter.character % 32 ) * CHARWIDTH;
src.y = ( currentCharacter.character / 32 ) * CHARHEIGHT; src.y = ( currentCharacter.character / 32 ) * CHARHEIGHT;
dst.x = iX * CHARWIDTH; dst.x = iX * CHARWIDTH;
dst.y = iY * CHARHEIGHT; dst.y = iY * CHARHEIGHT;
SDL_SetRenderDrawColor ( pRenderer, currentBgColour.r, currentBgColour.g, currentBgColour.b, currentBgColour.a ); SDL_SetRenderDrawColor ( pRenderer, currentBgColour.r, currentBgColour.g, currentBgColour.b, currentBgColour.a );
SDL_RenderFillRect ( pRenderer, &dst ); SDL_RenderFillRect ( pRenderer, &dst );
SDL_SetRenderDrawColor ( pRenderer, 0, 0, 0, currentFgColour.a ); SDL_SetRenderDrawColor ( pRenderer, 0, 0, 0, currentFgColour.a );
if ( bBlinkState || !currentCharacter.blinking ) if ( bBlinkState || !currentCharacter.blinking )
{ {
SDL_SetTextureColorMod ( pCodepage, currentFgColour.r, currentFgColour.g, currentFgColour.b ); SDL_SetTextureColorMod ( pCodepage, currentFgColour.r, currentFgColour.g, currentFgColour.b );
SDL_RenderCopy ( pRenderer, pCodepage, &src, &dst ); SDL_RenderCopy ( pRenderer, pCodepage, &src, &dst );
} }
if ( ++iX >= 80 ) if ( ++iX >= 80 )
{ {
iX = 0; iX = 0;
++iY; ++iY;
} }
} }
SDL_RenderPresent ( pRenderer ); SDL_RenderPresent ( pRenderer );
bValidRender = true; bValidRender = true;
} }
} }
fclose ( pFile ); fclose ( pFile );
SDL_DestroyTexture ( pCodepage ); SDL_DestroyTexture ( pCodepage );
SDL_DestroyRenderer ( pRenderer ); SDL_DestroyRenderer ( pRenderer );
SDL_DestroyWindow ( pWindow ); SDL_DestroyWindow ( pWindow );
IMG_Quit (); IMG_Quit ();
SDL_Quit (); SDL_Quit ();
return 0; return 0;
} }