Added support for setting the clear color to a generic sky color.

This is very basic and it does exacerbate the gaps between polygons on some maps, but at least we get to have something of a sky.

display.c

@@ -45,6 +45,8 @@ u_long *curOT;
 // video mode and widescreen options to maintain a consistent aspect ratio.
 VECTOR aspect_scale = { SCREENWIDTH * ONE / 320, ONE, ONE };
 
+P_COLOR clearColor = { 0 };
+
 u_short polyCount;
 u_char enableTexturing = 1;
 u_char enableVsync = 0;
@@ -141,8 +143,8 @@ void display_reset(int mode, u_char interlaced, u_char widescreen, int *outScree
 	disp[0].screen.h = disp[1].screen.h = screenHeight;
 
 	// Set and enable clear color
-	setRGB0(&draw[0], 0, 0, 0);
-	setRGB0(&draw[1], 0, 0, 0);
+	setColor0(&draw[0], clearColor.color);
+	setColor0(&draw[1], clearColor.color);
 	draw[0].isbg = 1;
 	draw[0].dtd = 1;
 	draw[1].isbg = 1;
@@ -154,6 +156,13 @@ void display_reset(int mode, u_char interlaced, u_char widescreen, int *outScree
 		*outScreenHeight = screenHeight;
 }
 
+void display_setClearColor(u_char color[4])
+{
+	clearColor = *((P_COLOR*)color);
+	setColor0(&draw[0], clearColor.color);
+	setColor0(&draw[1], clearColor.color);
+}
+
 void display_start()
 {
     curOT = ot[db];

display.h

@@ -16,6 +16,7 @@ extern u_char enableTexturing;
 
 void display_init();
 void display_reset(int mode, u_char interlaced, u_char widescreen, int *outScreenHeight);
+void display_setClearColor(u_char color[4]);
 void display_start();
 void display_finish();
 

main.c

@@ -53,6 +53,7 @@ int main(int argc, const char *argv[])
 		input_process();
 
 		display_start();
+		display_setClearColor(world.worldSpawn->skyColor);
 
 		u_short fps = time_getFrameRate();
 		FntPrint(-1, "Time: %d, frame: %d, delta time: %3d, fps: %d.%02d\n", (time_getRealTime() * 1000) >> 12, time_getFrameNumber(), time_getDeltaTime(), fps >> 8, ((fps & 0xFF) * 100) >> 8);

ps1bsp.h

@@ -28,6 +28,7 @@ typedef struct
 {
 	u_short version;
 
+	ps1bsp_dentry_t worldSpawn;
 	ps1bsp_dentry_t textures;
 	ps1bsp_dentry_t vertices;
 	ps1bsp_dentry_t polygons;
@@ -42,6 +43,11 @@ typedef struct
 	ps1bsp_dentry_t models;
 } ps1bsp_header_t;
 
+typedef struct
+{
+	unsigned char skyColor[4];
+} ps1bsp_worldspawn_t;
+
 typedef struct
 {
 	unsigned short tpage;		// Texture page in PS1 VRAM (precalculated when generating the texture atlas)

world.c

@@ -39,6 +39,7 @@ void world_load(const u_long *data, world_t *world)
 
     ps1bsp_header_t* header = (ps1bsp_header_t*)bytes;
 
+    LOAD_CHUNK(ps1bsp_worldspawn_t, world->worldSpawn, world->numTextures, bytes, header->worldSpawn);
     LOAD_CHUNK(ps1bsp_texture_t, world->textures, world->numTextures, bytes, header->textures);
     LOAD_CHUNK(ps1bsp_vertex_t, world->vertices, world->numVertices, bytes, header->vertices);
     LOAD_CHUNK(ps1bsp_polygon_t, world->polygons, world->numPolygons, bytes, header->polygons);

world.h

@@ -5,6 +5,8 @@
 
 typedef struct
 {
+    ps1bsp_worldspawn_t *worldSpawn;
+
     u_short numTextures;
     ps1bsp_texture_t *textures;