Initial commit

1 files changed, 201 insertions, 0 deletions

diff --git a/Source/Camera.c b/Source/Camera.c
new file mode 100755
index 0000000..9241455
--- /dev/null
+++ b/Source/Camera.c
@@ -0,0 +1,201 @@
+/* *************************************
+ * 	Includes
+ * *************************************/
+
+#include "Camera.h"
+
+/* *************************************
+ * 	Defines
+ * *************************************/
+
+#define SPEED_CALCULATION_TIME 3
+#define MAX_CAMERA_SPEED 5
+#define MIN_CAMERA_SPEED 1
+#define CAMERA_INITIAL_X_OFFSET (X_SCREEN_RESOLUTION >> 1)
+
+/* *************************************
+ * 	Local Prototypes
+ * *************************************/
+
+static void CameraUpdateSpeed(TYPE_PLAYER * ptrPlayer);
+static bool CameraSpecialConditions(TYPE_PLAYER * ptrPlayer);
+
+void CameraInit(TYPE_PLAYER * ptrPlayer)
+{
+	// Center camera on screen
+	ptrPlayer->Camera.X_Offset = CAMERA_INITIAL_X_OFFSET;
+	ptrPlayer->Camera.Y_Offset = 0;
+	ptrPlayer->Camera.X_Speed = 0;
+	ptrPlayer->Camera.Y_Speed = 0;
+	ptrPlayer->Camera.Speed_Timer = SPEED_CALCULATION_TIME;
+}
+
+void CameraApplyCoordinatesToSprite(TYPE_PLAYER * ptrPlayer, GsSprite * spr)
+{
+	spr->x += (short)ptrPlayer->Camera.X_Offset;
+	spr->y += (short)ptrPlayer->Camera.Y_Offset;
+}
+
+void CameraApplyCoordinatesToRectangle(TYPE_PLAYER * ptrPlayer, GsRectangle * rect)
+{
+	dprintf("Rectangle {%d, %d}\n",
+			rect->x,
+			rect->y	);
+			
+	rect->x += (short)ptrPlayer->Camera.X_Offset;
+	rect->y += (short)ptrPlayer->Camera.Y_Offset;
+}
+
+void CameraUpdateSpeed(TYPE_PLAYER * ptrPlayer)
+{
+	if(ptrPlayer->PadDirectionKeyPressed_Callback() == true)
+	{
+		if(ptrPlayer->PadKeyPressed_Callback(PAD_LEFT) == true)
+		{
+			if(ptrPlayer->Camera.X_Speed < 0)
+			{
+				ptrPlayer->Camera.X_Speed += 2;
+			}
+			else if(ptrPlayer->Camera.X_Speed < MAX_CAMERA_SPEED)
+			{
+				ptrPlayer->Camera.X_Speed++;
+			}
+		}
+			
+		if(ptrPlayer->PadKeyPressed_Callback(PAD_UP) == true)
+		{
+			if(ptrPlayer->Camera.Y_Speed < 0)
+			{
+				ptrPlayer->Camera.Y_Speed += 2;
+			}
+			else if(ptrPlayer->Camera.Y_Speed < MAX_CAMERA_SPEED)
+			{
+				ptrPlayer->Camera.Y_Speed++;
+			}
+		}
+			
+		if(ptrPlayer->PadKeyPressed_Callback(PAD_DOWN) == true)
+		{
+			if(ptrPlayer->Camera.Y_Speed > 0)
+			{
+				ptrPlayer->Camera.Y_Speed -= 2;
+			}
+			else if(ptrPlayer->Camera.Y_Speed > -MAX_CAMERA_SPEED)
+			{
+				ptrPlayer->Camera.Y_Speed--;
+			}
+		}
+		
+		if(ptrPlayer->PadKeyPressed_Callback(PAD_RIGHT) == true)
+		{
+			if(ptrPlayer->Camera.X_Speed > 0)
+			{
+				ptrPlayer->Camera.X_Speed -= 2;
+			}
+			else if(ptrPlayer->Camera.X_Speed > -MAX_CAMERA_SPEED)
+			{
+				ptrPlayer->Camera.X_Speed--;
+			}
+		}
+	}
+
+	if(	(ptrPlayer->PadKeyPressed_Callback(PAD_LEFT) == false)
+			&&
+		(ptrPlayer->PadKeyPressed_Callback(PAD_RIGHT) == false)	)
+	{
+		if(ptrPlayer->Camera.X_Speed > 0)
+		{
+			ptrPlayer->Camera.X_Speed--;
+		}
+		else if(ptrPlayer->Camera.X_Speed < 0)
+		{
+			ptrPlayer->Camera.X_Speed++;
+		}
+	}
+	
+	if(	(ptrPlayer->PadKeyPressed_Callback(PAD_UP) == false)
+			&&
+		(ptrPlayer->PadKeyPressed_Callback(PAD_DOWN) == false)	)
+	{		
+		if(ptrPlayer->Camera.Y_Speed > 0)
+		{
+			ptrPlayer->Camera.Y_Speed--;
+		}
+		else if(ptrPlayer->Camera.Y_Speed < 0)
+		{
+			ptrPlayer->Camera.Y_Speed++;
+		}
+	}
+}
+
+void CameraHandler(TYPE_PLAYER * ptrPlayer)
+{
+	if(CameraSpecialConditions(ptrPlayer) == true)
+	{
+		ptrPlayer->Camera.X_Speed = 0;
+		ptrPlayer->Camera.Y_Speed = 0;
+		return;
+	}
+	
+	if(ptrPlayer->Camera.Speed_Timer < SPEED_CALCULATION_TIME)
+	{
+		ptrPlayer->Camera.Speed_Timer++;
+	}
+	else
+	{
+		ptrPlayer->Camera.Speed_Timer = 0;
+		CameraUpdateSpeed(ptrPlayer);
+	}
+	
+	ptrPlayer->Camera.X_Offset += ptrPlayer->Camera.X_Speed;
+	ptrPlayer->Camera.Y_Offset += ptrPlayer->Camera.Y_Speed;
+}
+
+bool CameraSpecialConditions(TYPE_PLAYER * ptrPlayer)
+{
+	if(	(ptrPlayer->ShowAircraftData == true)
+					||
+		(ptrPlayer->SelectRunway == true)		)
+	{
+		// Camera cannot be handled when these states are activated
+	
+		return true;
+	}
+	
+	return false;
+}
+
+TYPE_ISOMETRIC_POS CameraGetIsoPos(TYPE_PLAYER * ptrPlayer)
+{
+	TYPE_ISOMETRIC_POS IsoPos;
+	TYPE_CARTESIAN_POS CartPos;
+	
+	CartPos.x = CAMERA_INITIAL_X_OFFSET - ptrPlayer->Camera.X_Offset;
+	CartPos.y = (Y_SCREEN_RESOLUTION >> 1) - ptrPlayer->Camera.Y_Offset;
+	
+	/*dprintf("CartPos = {%d, %d}\n", CartPos.x, CartPos.y);*/
+	
+	IsoPos = GfxCartesianToIsometric(&CartPos);
+	
+	return IsoPos;
+}
+
+void CameraMoveToIsoPos(TYPE_PLAYER * ptrPlayer, TYPE_ISOMETRIC_POS IsoPos)
+{
+	TYPE_CARTESIAN_POS CartPos = GfxIsometricToCartesian(&IsoPos);
+	
+	/*dprintf("Isometric pos = {%d, %d, %d}, "
+			"Cartesian pos = {%d, %d}\n",
+			IsoPos.x,
+			IsoPos.y,
+			IsoPos.z,
+			CartPos.x,
+			CartPos.y	);*/
+	
+	ptrPlayer->Camera.X_Offset = CAMERA_INITIAL_X_OFFSET - CartPos.x;
+	ptrPlayer->Camera.Y_Offset = (Y_SCREEN_RESOLUTION >> 1) - CartPos.y;
+	
+	/*dprintf("Moving camera to {%d, %d}\n",
+			ptrPlayer->Camera.X_Offset,
+			ptrPlayer->Camera.Y_Offset	);*/
+}