Game Development Reference
In-Depth Information
Listing 26-4.
Platforms.h
#pragma once
#if defined(_WIN32) || defined(_WIN64)
#define PLATFORM_WINDOWS 1
#define PLATFORM_ANDROID 0
#define PLATFORM_IOS 0
#elif defined(__ANDROID__)
#define PLATFORM_WINDOWS 0
#define PLATFORM_ANDROID 1
#define PLATFORM_IOS 0
#elif defined(TARGET_OS_IPHONE)
#define PLATFORM_WINDOWS 0
#define PLATFORM_ANDROID 0
#define PLATFORM_IOS 1
#endif
This header achieves the task of converting preprocessor symbols provided by the Windows,
Android, and iOS build tools into single definitions that we can now use in our own code. The
_WIN32
and
_WIN64
macros are added to your build on Windows machines, whereas
__ANDROID__
and
TARGET_OS_IPHONE
exist when building Android and iOS applications. These definitions can
change over time, and an obvious example is the
_WIN64
macro, which did not exist before the 64-
bit versions of the Windows operating system and this is the reason for wanting to create our own
platform macros. We can add or remove from
Platforms.h
as we see fit without affecting the rest of
our program.
I've updated the
Enemy
classes to have platform-specific implementations to show you how you can
put these platform-specific classes into action. Listing 26-5 shows that the
Enemy
class has been
renamed
EnemyBase
.
Listing 26-5. Renaming
Enemy
to
EnemyBase
#pragma once
#include "Entity.h"
#include "EnemyFactory.h"
#include "Serializable.h"
#include <memory>
class
EnemyBase
: public Entity
, public Serializable
