Fixing stable Linux!

Also makes it run nice on a raspberry pi 3

src/engine/doomdata.h

@@ -56,19 +56,23 @@ enum {
 	ML_MACROS           // Linedef macros, from editing
 };
 
+#ifdef _MSC_VER
+#pragma pack(push, 1)
+#endif
+
 // A single Vertex.
 typedef struct {
 	fixed_t    x;
 	fixed_t    y;
-} mapvertex_t;
+} PACKEDATTR mapvertex_t;
 
 typedef struct {
 	byte r;
 	byte g;
 	byte b;
 	byte a;
 	int16_t tag;
-} maplights_t;
+} PACKEDATTR maplights_t;
 
 // A SideDef, defining the visual appearance of a wall,
 // by setting textures and offsets.
@@ -79,7 +83,7 @@ typedef struct {
 	word    bottomtexture;
 	word    midtexture;
 	int16_t    sector;    // Front sector, towards viewer.
-} mapsidedef_t;
+} PACKEDATTR mapsidedef_t;
 
 // A LineDef, as used for editing, and as input
 // to the BSP builder.
@@ -95,7 +99,7 @@ typedef struct {
 	// sidenum[1] will be -1 (NO_INDEX) if one sided
 	//
 	word    sidenum[2]; // sidenum[1] will be -1 if one sided
-} maplinedef_t;
+} PACKEDATTR maplinedef_t;
 
 #define NO_SIDE_INDEX   ((word)-1)
 
@@ -177,7 +181,7 @@ typedef    struct {
 	int16_t    special;
 	int16_t    tag;
 	word    flags;
-} mapsector_t;
+} PACKEDATTR mapsector_t;
 
 //
 // Sector Flags
@@ -204,7 +208,7 @@ typedef    struct {
 typedef struct {
 	word    numsegs;
 	word    firstseg;   // Index of first one, segs are stored sequentially.
-} mapsubsector_t;
+} PACKEDATTR mapsubsector_t;
 
 // LineSeg, generated by splitting LineDefs
 // using partition lines selected by BSP builder.
@@ -215,7 +219,7 @@ typedef struct {
 	word    linedef;
 	int16_t    side;
 	int16_t    offset;
-} mapseg_t;
+} PACKEDATTR mapseg_t;
 
 // BSP node structure.
 
@@ -236,7 +240,7 @@ typedef struct {
 	// If NF_SUBSECTOR its a subsector,
 	// else it's a node of another subtree.
 	word    children[2];
-} mapnode_t;
+} PACKEDATTR mapnode_t;
 
 // Thing definition, position, orientation and type,
 // plus skill/visibility flags and attributes.
@@ -248,6 +252,10 @@ typedef struct {
 	int16_t    type;
 	int16_t    options;
 	int16_t    tid;
-} mapthing_t;
+} PACKEDATTR mapthing_t;
+
+#ifdef _MSC_VER
+#pragma pack(pop)
+#endif
 
 #endif            // __DOOMDATA__

src/engine/gl_main.c

@@ -100,7 +100,6 @@ GL_EXT_compiled_vertex_array_Define();
 //GL_EXT_multi_draw_arrays_Define();
 //GL_EXT_fog_coord_Define();
 //GL_ARB_vertex_buffer_object_Define();
-GL_ARB_texture_non_power_of_two_Define();
 GL_ARB_texture_env_combine_Define();
 GL_EXT_texture_env_combine_Define();
 GL_EXT_texture_filter_anisotropic_Define();
@@ -110,12 +109,12 @@ GL_EXT_texture_filter_anisotropic_Define();
 //
 
 static dboolean FindExtension(const int8_t* ext) {
-	const byte* extensions = NULL;
-	const byte* start;
-	byte* where, * terminator;
+	const int8_t* extensions = NULL;
+	const int8_t* start;
+	const int8_t* where, * terminator;
 
 	// Extension names should not have spaces.
-	where = (byte*)dstrrchr((int8_t*)ext, ' ');
+	where = strrchr(ext, ' ');
 	if (where || *ext == '\0') {
 		return 0;
 	}
@@ -124,7 +123,7 @@ static dboolean FindExtension(const int8_t* ext) {
 
 	start = extensions;
 	for (;;) {
-		where = (byte*)strstr(start, ext);
+		where = strstr(start, ext);
 		if (!where) {
 			break;
 		}
@@ -326,6 +325,10 @@ void GL_SetTextureFilter(void) {
 //
 
 void GL_SetDefaultCombiner(void) {
+	    if (!usingGL) {
+        return;
+    }
+
 	if (has_GL_ARB_multitexture) {
 		GL_SetTextureUnit(1, false);
 		GL_SetTextureUnit(2, false);

src/engine/p_map.c

@@ -534,6 +534,7 @@ dboolean P_TryMove(mobj_t* thing, fixed_t x, fixed_t y) {
 			}
 		}
 	}
+	numspechit = 0;
 
 	return true;
 }
@@ -1799,4 +1800,4 @@ void P_CheckChaseCamPosition(mobj_t* target, mobj_t* camera, fixed_t x, fixed_t
 		camera->x = x;
 		camera->y = y;
 	}
-}
+}

src/engine/w_wad.c

@@ -62,6 +62,10 @@
 // GLOBALS
 //
 
+#ifdef _MSC_VER
+#pragma pack(push, 1)
+#endif
+
 //
 // TYPES
 //
@@ -70,13 +74,17 @@ typedef struct {
 	int8_t        identification[4];
 	int            numlumps;
 	int            infotableofs;
-} wadinfo_t;
+} PACKEDATTR wadinfo_t;
 
 typedef struct {
 	int            filepos;
 	int            size;
 	int8_t        name[8];
-} filelump_t;
+} PACKEDATTR filelump_t;
+
+#ifdef _MSC_VER
+#pragma pack(pop)
+#endif
 
 #define MAX_MEMLUMPS    16