Fixed some issues with texture atlas generation.

The image is at least stable now, but textures are still not drawing properly.

ps1bsp.h

@@ -42,8 +42,8 @@ typedef struct
 typedef struct
 {
 	unsigned char w, h;			// These may be necessary for scaling UVs, especially since we use a mix of mip0 and mip1 textures
-	unsigned short tpage;		// Texture page in PS1 VRAM (precalculated when generating the texture atlas)
 	unsigned char uoffs, voffs;	// Texture coordinate offset within the texture page
+	unsigned short tpage;		// Texture page in PS1 VRAM (precalculated when generating the texture atlas)
 	unsigned short nextframe;	// If non-zero, the texture is animated and this points to the next texture in the sequence
 } ps1bsp_texture_t;
 

world.c

@@ -336,8 +336,8 @@ static void world_drawface(const world_t *world, const ps1bsp_face_t *face)
         {
             const ps1bsp_vertex_t *vert = &world->vertices[faceVertex->index];
             *((SVECTOR*)curVec) = *((SVECTOR*)vert);
-            curVec->u = faceVertex->u + faceTexture->uoffs;
-            curVec->v = faceVertex->v + faceTexture->voffs;
+            curVec->u = (u_short)faceVertex->u + faceTexture->uoffs;
+            curVec->v = (u_short)faceVertex->v + faceTexture->voffs;
             curVec->pad = faceVertex->light;
         }