changed how building is triggered, now there is a [twn] shell script that is exptected to be in PATH. also physfs and libxm cmake targets no longer recompiled per every target, but shared

apps/template/CMakeLists.txt

@@ -6,10 +6,7 @@ if(NOT CMAKE_BUILD_TYPE)
         set(CMAKE_BUILD_TYPE Debug)
 endif()
 
-# add root townengine cmake file
-if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
-        add_subdirectory(../../ ../../../.build)
-endif()
+add_subdirectory($ENV{TWNROOT} $ENV{TWNBUILDDIR})
 
 set(SOURCE_FILES
         game.c

apps/template/build.sh

@@ -1,3 +0,0 @@
-#!/bin/env sh
-
-cmake -B .build "$@" && cmake --build .build