borders are created (with a prefab)

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
borders can now be defined in the tileset

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
taking account of blocking and destruction

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
some cleaning

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>
respawn + various fixes

Signed-off-by: Nicolas Cailloux <caillouxnicolas@gmail.com>