Some jumps are fractionally too high to manage (keyboard control). The maps
should really be adjusted slightly, but setting the initial z component to
4/3 works.

--- blobandconquer-0.90.orig/src/entities/blobs.cpp
+++ blobandconquer-0.90/src/entities/blobs.cpp
@@ -83,7 +83,7 @@
 		self->velocity -= self->position;
 		self->velocity.normalize();
 		
-		self->velocity.z = 1.25;
+		self->velocity.z = 4.0/3.0;
 				
 		self->action = &blobJumping;
 				
--- blobandconquer-0.90.orig/src/player.cpp
+++ blobandconquer-0.90/src/player.cpp
@@ -786,7 +786,7 @@
 	{
 		if ((player->liquidLevel == 0) && (player->flags & EF_ONGROUND))
 		{
-			player->velocity.z = 1.25;
+			player->velocity.z = 4.0/3.0;
 			engine->keyState[SDLK_SPACE] = 0;
 			player->flags &= ~EF_ONGROUND;
 		}