Diff: MutantObject.cpp

Revision:

8:82d88f9381f3

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MutantObject.cpp	Sat Jun 08 17:51:33 2013 +0000
@@ -0,0 +1,64 @@
+/*
+ * SOURCE FILE : MutantObject.cpp
+ *
+ * Represents a mutated human.
+ *
+ */
+
+#include "MutantObject.h"
+#include "SpriteImageId.h"
+
+// Speed at which grunt moves.
+Int16 MutantObject::mutantSpeed = FromPixel( 1 );
+
+/**********************/
+/* START OFF A MUTANT */
+/**********************/
+// Pass pointer to human mutant will replace in human.
+// Pass pointer to object it will chase in player.
+void MutantObject::Start( HumanObject *human, GameObject *player ) {
+    // Copy coordinate of human to mutant.
+    Xco = human->Xco;
+    Yco = human->Yco;
+    // Use the same sprite number as the human.
+    SpriteNumber = human->SpriteNumber;
+    // Use an appropriate sprite image.
+    SpriteImage = ( human->GetHumanType() == HumanObject::Woman ) ? MutantWomanImage : MutantManImage;
+    // Make it chase the player.
+    SetChaseObject( player );
+    // Set initial direction as either up or down.
+    direction = ( Yco > chaseObject->Yco ) ? UpDir4 : DownDir4;
+}
+
+/************************/
+/* MOVE THE GAME OBJECT */
+/************************/
+void MutantObject::ProtectedMove( void ) {
+    switch( direction ) {
+    case UpDir4 :
+        Yco -= mutantSpeed;
+        if( Yco <= chaseObject->Yco ) {
+            direction = ( Xco > chaseObject->Xco ) ? LeftDir4 : RightDir4;
+        }
+        break;
+    case RightDir4 :
+        Xco += mutantSpeed;
+        if( Xco >= chaseObject->Xco ) {
+            direction = ( Yco > chaseObject->Yco ) ? UpDir4 : DownDir4;
+        }
+        break;
+    case DownDir4 :
+        Yco += mutantSpeed;
+        if( Yco >= chaseObject->Yco ) {
+            direction = ( Xco > chaseObject->Xco ) ? LeftDir4 : RightDir4;
+        }
+        break;
+    case LeftDir4 :
+        Xco -= mutantSpeed;
+        if( Xco <= chaseObject->Xco ) {
+            direction = ( Yco > chaseObject->Yco ) ? UpDir4 : DownDir4;
+        }
+        break;
+    }
+}
+