My try at a SCREEN$ reader in SDL

Using dev++ in windoze

.gitignore

@@ -1 +1,3 @@
-*.tap
+*.tap
+*.o
+*.exe

zxscr/Makefile.win

@@ -0,0 +1,33 @@
+# Project: zxscr
+# Makefile created by Dev-C++ 4.9.9.2
+
+CPP  = g++.exe
+CC   = gcc.exe
+WINDRES = windres.exe
+RES  = zxscr_private.res
+OBJ  = main.o $(RES)
+LINKOBJ  = main.o $(RES)
+LIBS =  -L"C:/Dev-Cpp/lib" -mwindows -lmingw32 -lSDLmain -lSDL 
+INCS =  -I"C:/Dev-Cpp/include" 
+CXXINCS =  -I"C:/Dev-Cpp/lib/gcc/mingw32/3.4.2/include"  -I"C:/Dev-Cpp/include/c++/3.4.2/backward"  -I"C:/Dev-Cpp/include/c++/3.4.2/mingw32"  -I"C:/Dev-Cpp/include/c++/3.4.2"  -I"C:/Dev-Cpp/include" 
+BIN  = zxscr.exe
+CXXFLAGS = $(CXXINCS)  
+CFLAGS = $(INCS) -Dmain=SDL_main 
+RM = rm -f
+
+.PHONY: all all-before all-after clean clean-custom
+
+all: all-before zxscr.exe all-after
+
+
+clean: clean-custom
+	${RM} $(OBJ) $(BIN)
+
+$(BIN): $(OBJ)
+	$(CC) $(LINKOBJ) -o "zxscr.exe" $(LIBS)
+
+main.o: main.c
+	$(CC) -c main.c -o main.o $(CFLAGS)
+
+zxscr_private.res: zxscr_private.rc 
+	$(WINDRES) -i zxscr_private.rc --input-format=rc -o zxscr_private.res -O coff 

zxscr/main.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <SDL/SDL.h>
+#include <windows.h>
+
+#define READ_BIT(x,n) (x>>n)&1
+
+/* The screen surface */
+SDL_Surface *screen = NULL;
+
+#define BUFFER_SIZE 32
+unsigned char buffer[192][BUFFER_SIZE];
+
+
+int order[191] = {
+     0, 8, 16, 24, 32, 40, 48, 56,
+     1, 9, 17, 25, 33, 41, 49, 57,
+    2, 10, 18, 26, 34, 42, 50, 58,
+    3, 11, 19, 27, 35, 43, 51, 59,
+    4, 12, 20, 28, 36, 44, 52, 60,
+    5, 13, 21, 29, 37, 45, 53, 61,
+    6, 14, 22, 30, 38, 46, 54, 62,
+    7, 15, 23, 31, 39, 47, 55, 63,
+    
+//  64, 72, 80, 88, 96, 104, 112, 120,
+//  65, 73, 81, 89, 97, 105, 113, 121,
+//  66, 74, 82, 90, 98, 106, 114, 122,
+//  67, 75, 83, 91, 99, 107, 115, 123,
+};
+
+//int order[191];
+int pos = 0;
+
+void add_item(int item)
+{
+     order[pos] = item;
+     pos++;
+}
+
+void set_order() {
+     int i,z;
+
+     // First third of the screen
+     for (i = 0; i <= 7; i++) {
+         for (z = 0; z <= 7; z++) {
+             add_item(i + z*8);
+         }
+     }
+
+     // Second third of the screen
+     for (i = 65; i <= 72; i++) {
+         for (z = 0; z <= 7; z++) {
+             add_item(i + z*8);
+         }
+     }
+
+}
+
+/* This function draws to the screen; replace this with your own code! */
+static void
+draw ()
+{
+    SDL_Rect rect;
+    Uint32 color;
+    int b,i,z,y;
+    
+    unsigned char c;
+
+    /* Create a black background */
+    color = SDL_MapRGB (screen->format, 0, 0, 0);
+    SDL_FillRect (screen, NULL, color);
+    
+    color = SDL_MapRGB (screen->format, 255, 255, 255);
+
+    for (b = 0; b <= 191; b++) { // Y
+        y = order[b];
+        for (i = 0; i <= 31; i++) { // X
+            c = buffer[y][i];
+            for (z = 7; z >= 0; z--) { // Position in X byte
+                if (READ_BIT(c,z)) {
+                   rect.w = 1;
+                   rect.h = 1;
+                   rect.x = (i*8-z)+8;
+                   rect.y = b;
+                   SDL_FillRect (screen, &rect, color);
+                }
+            }
+        }
+    }
+
+    /* Make sure everything is displayed on screen */
+    SDL_Flip (screen);
+}
+
+
+int
+main (int argc, char *argv[])
+{
+    char *msg;
+    int done;
+    int i;
+    FILE *file_ptr;
+
+    /* Initialize SDL */
+    if (SDL_Init (SDL_INIT_VIDEO) < 0)
+    {
+        sprintf (msg, "Couldn't initialize SDL: %s\n", SDL_GetError ());
+        MessageBox (0, msg, "Error", MB_ICONHAND); 
+        free (msg);
+        exit (1);
+    }
+    atexit (SDL_Quit);
+
+    /* Set 640x480 16-bits video mode */
+    screen = SDL_SetVideoMode (640, 480, 16, SDL_SWSURFACE | SDL_DOUBLEBUF);
+    if (screen == NULL)
+    {
+        sprintf (msg, "Couldn't set 640x480x16 video mode: %s\n",
+          SDL_GetError ());
+        MessageBox (0, msg, "Error", MB_ICONHAND); 
+        free (msg);
+        exit (2);
+    }
+    SDL_WM_SetCaption ("SDL MultiMedia Application", NULL);
+
+    file_ptr = fopen("MagiclandDizzy.scr", "r");
+
+    for(i = 0; i <= 192; i++) {
+          fread(buffer[i], sizeof(unsigned char), BUFFER_SIZE, file_ptr);
+    }
+    //set_order();
+
+    done = 0;
+    while (!done)
+    {
+        SDL_Event event;
+
+        /* Check for events */
+        while (SDL_PollEvent (&event))
+        {
+            switch (event.type)
+            {
+            case SDL_KEYDOWN:
+                break;
+            case SDL_QUIT:
+                done = 1;
+                break;
+            default:
+                break;
+            }
+        }
+
+        /* Draw to screen */
+        draw ();
+    }
+
+    return 0;
+}

zxscr/zxscr.dev

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+[Project]
+FileName=zxscr.dev
+Name=zxscr
+UnitCount=1
+Type=0
+Ver=1
+ObjFiles=
+Includes=
+Libs=
+PrivateResource=
+ResourceIncludes=
+MakeIncludes=
+Compiler=-Dmain=SDL_main
+CppCompiler=
+Linker=-lmingw32 -lSDLmain -lSDL
+IsCpp=0
+Icon=zxscr.ico
+ExeOutput=
+ObjectOutput=
+OverrideOutput=0
+OverrideOutputName=
+HostApplication=
+Folders=
+CommandLine=
+UseCustomMakefile=0
+CustomMakefile=
+IncludeVersionInfo=0
+SupportXPThemes=0
+CompilerSet=0
+CompilerSettings=
+
+[Unit1]
+FileName=main.c
+CompileCpp=0
+Folder=
+Compile=1
+Link=1
+Priority=1000
+OverrideBuildCmd=0
+BuildCmd=
+
+[VersionInfo]
+Major=0
+Minor=1
+Release=1
+Build=1
+LanguageID=1033
+CharsetID=1252
+CompanyName=
+FileVersion=
+FileDescription=Developed using the Dev-C++ IDE
+InternalName=
+LegalCopyright=
+LegalTrademarks=
+OriginalFilename=
+ProductName=
+ProductVersion=
+AutoIncBuildNr=0
+

zxscr/zxscr_private.h

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+/* THIS FILE WILL BE OVERWRITTEN BY DEV-C++ */
+/* DO NOT EDIT ! */
+
+#ifndef ZXSCR_PRIVATE_H
+#define ZXSCR_PRIVATE_H
+
+/* VERSION DEFINITIONS */
+#define VER_STRING	"0.1.1.1"
+#define VER_MAJOR	0
+#define VER_MINOR	1
+#define VER_RELEASE	1
+#define VER_BUILD	1
+#define COMPANY_NAME	""
+#define FILE_VERSION	""
+#define FILE_DESCRIPTION	"Developed using the Dev-C++ IDE"
+#define INTERNAL_NAME	""
+#define LEGAL_COPYRIGHT	""
+#define LEGAL_TRADEMARKS	""
+#define ORIGINAL_FILENAME	""
+#define PRODUCT_NAME	""
+#define PRODUCT_VERSION	""
+
+#endif /*ZXSCR_PRIVATE_H*/

zxscr/zxscr_private.rc

@@ -0,0 +1,6 @@
+/* THIS FILE WILL BE OVERWRITTEN BY DEV-C++ */
+/* DO NOT EDIT! */
+
+
+A ICON MOVEABLE PURE LOADONCALL DISCARDABLE "zxscr.ico"
+