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DavidWyand-GG 2012-09-19 11:15:01 -04:00
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Engine/source/T3D/fps/guiCrossHairHud.cpp Normal file
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//-----------------------------------------------------------------------------
// Copyright (c) 2012 GarageGames, LLC
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//-----------------------------------------------------------------------------
#include "platform/platform.h"
#include "gui/core/guiControl.h"
#include "gui/controls/guiBitmapCtrl.h"
#include "console/consoleTypes.h"
#include "scene/sceneManager.h"
#include "T3D/gameBase/gameConnection.h"
#include "T3D/shapeBase.h"
#include "gfx/gfxDrawUtil.h"
#include "console/engineAPI.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 );
DECLARE_CATEGORY( "Gui Game" );
DECLARE_DESCRIPTION( "Basic cross hair hud. Reacts to state of control object.\n"
"Also displays health bar for named objects under the cross hair." );
};
/// 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 );
ConsoleDocClass( GuiCrossHairHud,
"@brief Basic cross hair hud. Reacts to state of control object. Also displays health bar for named objects under the cross hair.\n\n"
"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.\n\n"
"@tsexample\n"
"\n new GuiCrossHairHud()"
"{\n"
" damageFillColor = \"1.0 0.0 0.0 1.0\"; // Fills with a solid red color\n"
" damageFrameColor = \"1.0 1.0 1.0 1.0\"; // Solid white frame color\n"
" damageRect = \"15 5\";\n"
" damageOffset = \"0 -10\";\n"
"};\n"
"@endtsexample\n"
"@ingroup GuiGame\n"
);
GuiCrossHairHud::GuiCrossHairHud()
{
mDamageFillColor.set( 0.0f, 1.0f, 0.0f, 1.0f );
mDamageFrameColor.set( 1.0f, 0.6f, 0.0f, 1.0f );
mDamageRectSize.set(50, 4);
mDamageOffset.set(0,32);
}
void GuiCrossHairHud::initPersistFields()
{
addGroup("Damage");
addField( "damageFillColor", TypeColorF, Offset( mDamageFillColor, GuiCrossHairHud ), "As the health bar depletes, this color will represent the health loss amount." );
addField( "damageFrameColor", TypeColorF, Offset( mDamageFrameColor, GuiCrossHairHud ), "Color for the health bar's frame." );
addField( "damageRect", TypePoint2I, Offset( mDamageRectSize, GuiCrossHairHud ), "Size for the health bar portion of the control." );
addField( "damageOffset", TypePoint2I, Offset( mDamageOffset, GuiCrossHairHud ), "Offset for drawing the damage portion of the health control." );
endGroup("Damage");
Parent::initPersistFields();
}
//-----------------------------------------------------------------------------
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 = dynamic_cast<ShapeBase*>(conn->getControlObject());
if (!control || !(control->getTypeMask() & 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
GFX->getDrawUtil()->drawRect(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)
GFX->getDrawUtil()->drawRectFill(rect, mDamageFillColor);
}