Initial commit

Torque/SDK/engine/game/fps/guiCrossHairHud.cc

@@ -0,0 +1,148 @@
+//-----------------------------------------------------------------------------
+// Torque Game Engine
+// Copyright (C) GarageGames.com, Inc.
+//-----------------------------------------------------------------------------
+
+#include "dgl/dgl.h"
+#include "gui/core/guiControl.h"
+#include "gui/controls/guiBitmapCtrl.h"
+#include "console/consoleTypes.h"
+#include "sceneGraph/sceneGraph.h"
+#include "game/gameConnection.h"
+#include "game/shapeBase.h"
+
+//-----------------------------------------------------------------------------
+/// Vary basic cross hair hud.
+/// Uses the base bitmap control to render a bitmap, and decides whether
+/// to draw or not depending on the current control object and it's state.
+/// If there is ShapeBase object under the cross hair and it's named,
+/// then a small health bar is displayed.
+class GuiCrossHairHud : public GuiBitmapCtrl
+{
+   typedef GuiBitmapCtrl Parent;
+
+   ColorF   mDamageFillColor;
+   ColorF   mDamageFrameColor;
+   Point2I  mDamageRectSize;
+   Point2I  mDamageOffset;
+
+protected:
+   void drawDamage(Point2I offset, F32 damage, F32 opacity);
+
+public:
+   GuiCrossHairHud();
+
+   void onRender( Point2I, const RectI &);
+   static void initPersistFields();
+   DECLARE_CONOBJECT( GuiCrossHairHud );
+};
+
+/// Valid object types for which the cross hair will render, this
+/// should really all be script controlled.
+static const U32 ObjectMask = PlayerObjectType | VehicleObjectType;
+
+
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_CONOBJECT( GuiCrossHairHud );
+
+GuiCrossHairHud::GuiCrossHairHud()
+{
+   mDamageFillColor.set( 0, 1, 0, 1 );
+   mDamageFrameColor.set( 1, 0.6, 0, 1 );
+   mDamageRectSize.set(50, 4);
+   mDamageOffset.set(0,32);
+}
+
+void GuiCrossHairHud::initPersistFields()
+{
+   Parent::initPersistFields();
+   addGroup("Damage");		
+   addField( "damageFillColor", TypeColorF, Offset( mDamageFillColor, GuiCrossHairHud ) );
+   addField( "damageFrameColor", TypeColorF, Offset( mDamageFrameColor, GuiCrossHairHud ) );
+   addField( "damageRect", TypePoint2I, Offset( mDamageRectSize, GuiCrossHairHud ) );
+   addField( "damageOffset", TypePoint2I, Offset( mDamageOffset, GuiCrossHairHud ) );
+   endGroup("Damage");		
+}
+
+
+//-----------------------------------------------------------------------------
+
+void GuiCrossHairHud::onRender(Point2I offset, const RectI &updateRect)
+{
+   // Must have a connection and player control object
+   GameConnection* conn = GameConnection::getConnectionToServer();
+   if (!conn)
+      return;
+   ShapeBase* control = conn->getControlObject();
+   if (!control || !(control->getType() & ObjectMask) || !conn->isFirstPerson())
+      return;
+
+   // Parent render.
+   Parent::onRender(offset,updateRect);
+
+   // Get control camera info
+   MatrixF cam;
+   Point3F camPos;
+   conn->getControlCameraTransform(0,&cam);
+   cam.getColumn(3, &camPos);
+
+   // Extend the camera vector to create an endpoint for our ray
+   Point3F endPos;
+   cam.getColumn(1, &endPos);
+   endPos *= gClientSceneGraph->getVisibleDistance();
+   endPos += camPos;
+
+   // Collision info. We're going to be running LOS tests and we
+   // don't want to collide with the control object.
+   static U32 losMask = TerrainObjectType | InteriorObjectType | ShapeBaseObjectType;
+   control->disableCollision();
+
+   RayInfo info;
+   if (gClientContainer.castRay(camPos, endPos, losMask, &info)) {
+      // Hit something... but we'll only display health for named
+      // ShapeBase objects.  Could mask against the object type here
+      // and do a static cast if it's a ShapeBaseObjectType, but this
+      // isn't a performance situation, so I'll just use dynamic_cast.
+      if (ShapeBase* obj = dynamic_cast<ShapeBase*>(info.object))
+         if (obj->getShapeName()) {
+            offset.x = updateRect.point.x + updateRect.extent.x / 2;
+            offset.y = updateRect.point.y + updateRect.extent.y / 2;
+            drawDamage(offset + mDamageOffset, obj->getDamageValue(), 1);
+         }
+   }
+
+   // Restore control object collision
+   control->enableCollision();
+}
+
+
+//-----------------------------------------------------------------------------
+/**
+   Display a damage bar ubove the shape.
+   This is a support funtion, called by onRender.
+*/
+void GuiCrossHairHud::drawDamage(Point2I offset, F32 damage, F32 opacity)
+{
+   mDamageFillColor.alpha = mDamageFrameColor.alpha = opacity;
+
+   // Damage should be 0->1 (0 being no damage,or healthy), but
+   // we'll just make sure here as we flip it.
+   damage = mClampF(1 - damage, 0, 1);
+
+   // Center the bar
+   RectI rect(offset, mDamageRectSize);
+   rect.point.x -= mDamageRectSize.x / 2;
+
+   // Draw the border
+   dglDrawRect(rect, mDamageFrameColor);
+
+   // Draw the damage % fill
+   rect.point += Point2I(1, 1);
+   rect.extent -= Point2I(1, 1);
+   rect.extent.x = (S32)(rect.extent.x * damage);
+   if (rect.extent.x == 1)
+      rect.extent.x = 2;
+   if (rect.extent.x > 0)
+      dglDrawRectFill(rect, mDamageFillColor);
+}