org.flixel.FlxCamera Maven / Gradle / Ivy
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package org.flixel;
import org.flixel.event.IFlxCamera;
import org.flixel.system.gdx.GdxGraphics;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
import flash.display.Stage;
/**
* The camera class is used to display the game's visuals in the Flash player.
* By default one camera is created automatically, that is the same size as the Flash Player.
* You can add more cameras or even replace the main camera using utilities in FlxG.
*
* @author Ka Wing Chin
*/
public class FlxCamera extends FlxBasic
{
/**
* Camera "follow" style preset: camera has no deadzone, just tracks the focus object directly.
*/
static public final int STYLE_LOCKON = 0;
/**
* Camera "follow" style preset: camera deadzone is narrow but tall.
*/
static public final int STYLE_PLATFORMER = 1;
/**
* Camera "follow" style preset: camera deadzone is a medium-size square around the focus object.
*/
static public final int STYLE_TOPDOWN = 2;
/**
* Camera "follow" style preset: camera deadzone is a small square around the focus object.
*/
static public final int STYLE_TOPDOWN_TIGHT = 3;
/**
* Camera "shake" effect preset: shake camera on both the X and Y axes.
*/
static public final int SHAKE_BOTH_AXES = 0;
/**
* Camera "shake" effect preset: shake camera on the X axis only.
*/
static public final int SHAKE_HORIZONTAL_ONLY = 1;
/**
* Camera "shake" effect preset: shake camera on the Y axis only.
*/
static public final int SHAKE_VERTICAL_ONLY = 2;
/**
* Camera "scale" mode preset: The game is not scaled.
*/
static public final int NO_SCALE = 0;
/**
* Camera "scale" mode preset: Scales the game to fill the display without stretching.
*/
static public final int FILL = 1;
/**
* Camera "scale" mode preset: Scales the game to fit the screen without stretching.
*/
static public final int FIT = 2;
/**
* Camera "scale" mode preset: Stretches the game to fill the entire display.
*/
static public final int STRETCH = 3;
/**
* Camera "scale" mode preset: Resizes FlxG.width to match the aspect ratio of the display, then scales the game to fill the entire display.
*/
static public final int RESIZE_WIDTH = 4;
/**
* While you can alter the zoom of each camera after the fact,
* this variable determines what value the camera will start at when created.
*/
static public float defaultZoom;
/**
* While you can alter the scale mode of each camera after the fact,
* this variable determines what value the camera will start at when created.
*/
static public int defaultScaleMode;
/**
* The X position of this camera's display. Zoom does NOT affect this number.
* Measured in pixels from the left side of the flash window.
*/
public float x;
/**
* The Y position of this camera's display. Zoom does NOT affect this number.
* Measured in pixels from the top of the flash window.
*/
public float y;
/**
* How wide the camera display is, in game pixels.
*/
public int width;
/**
* How tall the camera display is, in game pixels.
*/
public int height;
/**
* Tells the camera to follow this FlxObject object around.
*/
public FlxObject target;
/**
* You can assign a "dead zone" to the camera in order to better control its movement.
* The camera will always keep the focus object inside the dead zone,
* unless it is bumping up against the bounds rectangle's edges.
* The deadzone's coordinates are measured from the camera's upper left corner in game pixels.
* For rapid prototyping, you can use the preset deadzones (e.g. STYLE_PLATFORMER) with follow().
*/
public FlxRect deadzone;
/**
* The edges of the camera's range, i.e. where to stop scrolling.
* Measured in game pixels and world coordinates.
*/
public FlxRect bounds;
/**
* Stores the basic parallax scrolling values.
*/
public FlxPoint scroll;
/**
* The actual libgdx camera.
*/
OrthographicCamera _glCamera;
/**
* The natural background color of the camera. Defaults to FlxG.bgColor.
* NOTE: can be transparent for crazy FX!
*/
public int bgColor;
/**
* Indicates how far the camera is zoomed in.
*/
protected float _zoom;
/**
* Internal, to help avoid costly allocations.
*/
protected FlxPoint _point;
/**
* Internal, help with color transforming the flash bitmap.
*/
protected int _color;
/**
* Decides how flixel handles different screen sizes.
*/
protected int _scaleMode;
/**
* Internal, the factor of the screen width divided by the stage width.
*/
public float _screenScaleFactorX;
/**
* Internal, the factor of the screen height divided by the stage height.
*/
public float _screenScaleFactorY;
/**
* Internal, used to render buffer to screen space.
*/
float _flashOffsetX;
/**
* Internal, used to render buffer to screen space.
*/
float _flashOffsetY;
/**
* Internal, used to control the "flash" special effect.
*/
protected int _fxFlashColor;
/**
* Internal, used to control the "flash" special effect.
*/
protected float _fxFlashDuration;
/**
* Internal, used to control the "flash" special effect.
*/
protected IFlxCamera _fxFlashComplete;
/**
* Internal, used to control the "flash" special effect.
*/
protected float _fxFlashAlpha;
/**
* Internal, used to control the "fade" special effect.
*/
protected int _fxFadeColor;
/**
* Internal, used to control the "fade" special effect.
*/
protected float _fxFadeDuration;
/**
* Internal, used to control the "fade" special effect.
*/
protected IFlxCamera _fxFadeComplete;
/**
* Internal, used to control the "fade" special effect.
*/
protected float _fxFadeAlpha;
/**
* Internal, used to control the "shake" special effect.
*/
protected float _fxShakeIntensity;
/**
* Internal, used to control the "shake" special effect.
*/
protected float _fxShakeDuration;
/**
* Internal, used to control the "shake" special effect.
*/
protected IFlxCamera _fxShakeComplete;
/**
* Internal, used to control the "shake" special effect.
*/
protected FlxPoint _fxShakeOffset;
/**
* Internal, used to control the "shake" special effect.
*/
protected int _fxShakeDirection;
/**
* Internal helper to store the angle of the camera.
*/
protected float _angle;
/**
* Internal helper to store the alpha value of the camera.
*/
protected float _alpha;
/**
* Instantiates a new camera at the specified location, with the specified size and zoom level.
*
* @param X X location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Y Y location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Width The width of the camera display in pixels.
* @param Height The height of the camera display in pixels.
* @param Zoom The initial zoom level of the camera. A zoom level of 2 will make all pixels display at 2x resolution.
* @param ScaleMode The initial scale mode of the camera.
*/
public FlxCamera(int X,int Y,int Width,int Height,float Zoom,int ScaleMode)
{
x = X;
y = Y;
width = Width;
height = Height;
target = null;
deadzone = null;
scroll = new FlxPoint();
_point = new FlxPoint();
bounds = null;
_glCamera = new OrthographicCamera();
bgColor = FlxG.getBgColor();
_color = 0xffffff;
_alpha = 1.0f;
setScaleMode(ScaleMode);
setZoom(Zoom); //sets the scale of flash sprite, which in turn loads flashoffset values
_flashOffsetX = FlxG.width*defaultZoom*0.5f/getZoom();
_flashOffsetY = FlxG.height*defaultZoom*0.5f/getZoom();
_glCamera.position.x = _flashOffsetX - x;
_glCamera.position.y = _flashOffsetY - y;
_fxFlashColor = 0;
_fxFlashDuration = 0.0f;
_fxFlashComplete = null;
_fxFlashAlpha = 0.0f;
_fxFadeColor = 0;
_fxFadeDuration = 0.0f;
_fxFadeComplete = null;
_fxFadeAlpha = 0.0f;
_fxShakeIntensity = 0.0f;
_fxShakeDuration = 0.0f;
_fxShakeComplete = null;
_fxShakeOffset = new FlxPoint();
_fxShakeDirection = 0;
}
/**
* Instantiates a new camera at the specified location, with the specified size and zoom level.
*
* @param X X location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Y Y location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Width The width of the camera display in pixels.
* @param Height The height of the camera display in pixels.
* @param Zoom The initial zoom level of the camera. A zoom level of 2 will make all pixels display at 2x resolution.
*/
public FlxCamera(int X,int Y,int Width,int Height,float Zoom)
{
this(X,Y,Width,Height,Zoom,0);
}
/**
* Instantiates a new camera at the specified location, with the specified size and zoom level.
*
* @param X X location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Y Y location of the camera's display in pixels. Uses native, 1:1 resolution, ignores zoom.
* @param Width The width of the camera display in pixels.
* @param Height The height of the camera display in pixels.
*/
public FlxCamera(int X,int Y,int Width,int Height)
{
this(X,Y,Width,Height,0,0);
}
/**
* Clean up memory.
*/
@Override
public void destroy()
{
target = null;
scroll = null;
deadzone = null;
bounds = null;
_glCamera = null;
_fxFlashComplete = null;
_fxFadeComplete = null;
_fxShakeComplete = null;
_fxShakeOffset = null;
}
/**
* Updates the camera scroll as well as special effects like screen-shake or fades.
*/
@Override
public void update()
{
//Either follow the object closely,
//or doublecheck our deadzone and update accordingly.
if(target != null)
{
if(deadzone == null)
focusOn(target.getMidpoint(_point));
else
{
float edge;
float targetX = target.x + ((target.x > 0)?0.0000001f:-0.0000001f);
float targetY = target.y + ((target.y > 0)?0.0000001f:-0.0000001f);
edge = targetX - deadzone.x;
if(scroll.x > edge)
scroll.x = edge;
edge = targetX + target.width - deadzone.x - deadzone.width;
if(scroll.x < edge)
scroll.x = edge;
edge = targetY - deadzone.y;
if(scroll.y > edge)
scroll.y = edge;
edge = targetY + target.height - deadzone.y - deadzone.height;
if(scroll.y < edge)
scroll.y = edge;
}
}
//Make sure we didn't go outside the camera's bounds
if(bounds != null)
{
if(scroll.x < bounds.getLeft())
scroll.x = bounds.getLeft();
if(scroll.x > bounds.getRight() - width)
scroll.x = bounds.getRight() - width;
if(scroll.y < bounds.getTop())
scroll.y = bounds.getTop();
if(scroll.y > bounds.getBottom() - height)
scroll.y = bounds.getBottom() - height;
}
//Update the "flash" special effect
if(_fxFlashAlpha > 0.0f)
{
_fxFlashAlpha -= FlxG.elapsed/_fxFlashDuration;
if((_fxFlashAlpha <= 0) && (_fxFlashComplete != null))
_fxFlashComplete.callback();
}
//Update the "fade" special effect
if((_fxFadeAlpha > 0.0f) && (_fxFadeAlpha < 1.0f))
{
_fxFadeAlpha += FlxG.elapsed/_fxFadeDuration;
if(_fxFadeAlpha >= 1.0f)
{
_fxFadeAlpha = 1.0f;
if(_fxFadeComplete != null)
_fxFadeComplete.callback();
}
}
//Update the "shake" special effect
if(_fxShakeDuration > 0)
{
_fxShakeDuration -= FlxG.elapsed;
if(_fxShakeDuration <= 0)
{
_fxShakeOffset.make();
if(_fxShakeComplete != null)
_fxShakeComplete.callback();
}
else
{
if((_fxShakeDirection == SHAKE_BOTH_AXES) || (_fxShakeDirection == SHAKE_HORIZONTAL_ONLY))
_fxShakeOffset.x = (FlxG.random()*_fxShakeIntensity*width*2-_fxShakeIntensity*width)*_zoom;
if((_fxShakeDirection == SHAKE_BOTH_AXES) || (_fxShakeDirection == SHAKE_VERTICAL_ONLY))
_fxShakeOffset.y = (FlxG.random()*_fxShakeIntensity*height*2-_fxShakeIntensity*height)*_zoom;
}
}
}
/**
* Tells this camera object what FlxObject to track.
*
* @param Target The object you want the camera to track. Set to null to not follow anything.
* @param Style Leverage one of the existing "deadzone" presets. If you use a custom deadzone, ignore this parameter and manually specify the deadzone after calling follow().
*/
public void follow(FlxObject Target, int Style)
{
target = Target;
float helper;
switch(Style)
{
case STYLE_PLATFORMER:
float w = width/8f;
float h = height/3f;
deadzone = new FlxRect((width-w)/2f,(height-h)/2f - h*0.25f,w,h);
break;
case STYLE_TOPDOWN:
helper = FlxU.max(width,height)/4f;
deadzone = new FlxRect((width-helper)/2f,(height-helper)/2f,helper,helper);
break;
case STYLE_TOPDOWN_TIGHT:
helper = FlxU.max(width, height)/8f;
deadzone = new FlxRect((width-helper)/2f,(height-helper)/2f,helper,helper);
break;
case STYLE_LOCKON:
default:
deadzone = null;
break;
}
}
/**
* Tells this camera object what FlxObject to track.
*
* @param Target The object you want the camera to track. Set to null to not follow anything.
*/
public void follow(FlxObject Target)
{
follow(Target, STYLE_LOCKON);
}
/**
* Move the camera focus to this location instantly.
*
* @param Point Where you want the camera to focus.
*/
public void focusOn(FlxPoint Point)
{
Point.x += (Point.x > 0)?0.0000001f:-0.0000001f;
Point.y += (Point.y > 0)?0.0000001f:-0.0000001f;
scroll.make(Point.x - width*0.5f,Point.y - height*0.5f);
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*
* @param X The smallest X value of your level (usually 0).
* @param Y The smallest Y value of your level (usually 0).
* @param Width The largest X value of your level (usually the level width).
* @param Height The largest Y value of your level (usually the level height).
* @param UpdateWorld Whether the global quad-tree's dimensions should be updated to match (default: false).
*/
public void setBounds(float X, float Y, float Width, float Height, boolean UpdateWorld)
{
if(bounds == null)
bounds = new FlxRect();
bounds.make(X,Y,Width,Height);
if(UpdateWorld)
FlxG.worldBounds.copyFrom(bounds);
update();
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*
* @param X The smallest X value of your level (usually 0).
* @param Y The smallest Y value of your level (usually 0).
* @param Width The largest X value of your level (usually the level width).
* @param Height The largest Y value of your level (usually the level height).
*/
public void setBounds(float X, float Y, float Width, float Height)
{
setBounds(X, Y, Width, Height, false);
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*
* @param X The smallest X value of your level (usually 0).
* @param Y The smallest Y value of your level (usually 0).
* @param Width The largest X value of your level (usually the level width).
*/
public void setBounds(float X, float Y, float Width)
{
setBounds(X, Y, Width, 0, false);
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*
* @param X The smallest X value of your level (usually 0).
* @param Y The smallest Y value of your level (usually 0).
*/
public void setBounds(float X, float Y)
{
setBounds(X, Y, 0, 0, false);
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*
* @param X The smallest X value of your level (usually 0).
*/
public void setBounds(float X)
{
setBounds(X, 0, 0, 0, false);
}
/**
* Specify the boundaries of the level or where the camera is allowed to move.
*/
public void setBounds()
{
setBounds(0, 0, 0, 0, false);
}
/**
* The screen is filled with this color and gradually returns to normal.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the flash to fade.
* @param OnComplete A function you want to run when the flash finishes.
* @param Force Force the effect to reset.
*/
public void flash(int Color, float Duration, IFlxCamera OnComplete, boolean Force)
{
if(!Force && (_fxFlashAlpha > 0.0f))
return;
_fxFlashColor = Color;
if(Duration <= 0)
Duration = Float.MIN_VALUE;
_fxFlashDuration = Duration;
_fxFlashComplete = OnComplete;
_fxFlashAlpha = 1.0f;
}
/**
* The screen is filled with this color and gradually returns to normal.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the flash to fade.
* @param OnComplete A function you want to run when the flash finishes.
*/
public void flash(int Color, float Duration, IFlxCamera OnComplete)
{
flash(Color, Duration, OnComplete, false);
}
/**
* The screen is filled with this color and gradually returns to normal.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the flash to fade.
*/
public void flash(int Color, float Duration)
{
flash(Color, Duration, null, false);
}
/**
* The screen is filled with this color and gradually returns to normal.
*
* @param Color The color you want to use.
*/
public void flash(int Color)
{
flash(Color, 1, null, false);
}
/**
* The screen is filled with this color and gradually returns to normal.
*/
public void flash()
{
flash(0xffffffff, 1, null, false);
}
/**
* The screen is gradually filled with this color.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the fade to finish.
* @param OnComplete A function you want to run when the fade finishes.
* @param Force Force the effect to reset.
*/
public void fade(int Color, float Duration, IFlxCamera OnComplete, boolean Force)
{
if(!Force && (_fxFadeAlpha > 0.0f))
return;
_fxFadeColor = Color;
if(Duration <= 0)
Duration = Float.MIN_VALUE;
_fxFadeDuration = Duration;
_fxFadeComplete = OnComplete;
_fxFadeAlpha = Float.MIN_VALUE;
}
/**
* The screen is gradually filled with this color.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the fade to finish.
* @param OnComplete A function you want to run when the fade finishes.
*/
public void fade(int Color, float Duration, IFlxCamera OnComplete)
{
fade(Color, Duration, OnComplete, false);
}
/**
* The screen is gradually filled with this color.
*
* @param Color The color you want to use.
* @param Duration How long it takes for the fade to finish.
*/
public void fade(int Color, float Duration)
{
fade(Color, Duration, null, false);
}
/**
* The screen is gradually filled with this color.
*
* @param Color The color you want to use.
*/
public void fade(int Color)
{
fade(Color, 1, null, false);
}
/**
* The screen is gradually filled with this color.
*/
public void fade()
{
fade(0xff000000, 1, null, false);
}
/**
* A simple screen-shake effect.
*
* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
* @param Duration The length in seconds that the shaking effect should last.
* @param OnComplete A function you want to run when the shake effect finishes.
* @param Force Force the effect to reset (default = true, unlike flash() and fade()!).
* @param Direction Whether to shake on both axes, just up and down, or just side to side (use class constants SHAKE_BOTH_AXES, SHAKE_VERTICAL_ONLY, or SHAKE_HORIZONTAL_ONLY).
*/
public void shake(float Intensity, float Duration, IFlxCamera OnComplete, boolean Force, int Direction)
{
if(!Force && ((_fxShakeOffset.x != 0) || (_fxShakeOffset.y != 0)))
return;
_fxShakeIntensity = Intensity;
_fxShakeDuration = Duration;
_fxShakeComplete = OnComplete;
_fxShakeDirection = Direction;
_fxShakeOffset.make();
}
/**
* A simple screen-shake effect.
*
* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
* @param Duration The length in seconds that the shaking effect should last.
* @param OnComplete A function you want to run when the shake effect finishes.
* @param Force Force the effect to reset (default = true, unlike flash() and fade()!).
*/
public void shake(float Intensity, float Duration, IFlxCamera OnComplete, boolean Force)
{
shake(Intensity, Duration, OnComplete, Force, SHAKE_BOTH_AXES);
}
/**
* A simple screen-shake effect.
*
* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
* @param Duration The length in seconds that the shaking effect should last.
* @param OnComplete A function you want to run when the shake effect finishes.
*/
public void shake(float Intensity, float Duration, IFlxCamera OnComplete)
{
shake(Intensity, Duration, OnComplete, true, SHAKE_BOTH_AXES);
}
/**
* A simple screen-shake effect.
*
* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
* @param Duration The length in seconds that the shaking effect should last.
*/
public void shake(float Intensity, float Duration)
{
shake(Intensity, Duration, null, true, SHAKE_BOTH_AXES);
}
/**
* A simple screen-shake effect.
*
* @param Intensity Percentage of screen size representing the maximum distance that the screen can move while shaking.
*/
public void shake(float Intensity)
{
shake(Intensity, 0.5f, null, true, SHAKE_BOTH_AXES);
}
/**
* A simple screen-shake effect.
*/
public void shake()
{
shake(0.05f, 0.5f, null, true, SHAKE_BOTH_AXES);
}
/**
* Just turns off all the camera effects instantly.
*/
public void stopFX()
{
_fxFlashAlpha = 0.0f;
_fxFadeAlpha = 0.0f;
_fxShakeDuration = 0;
_glCamera.position.x = _flashOffsetX - x;
_glCamera.position.y = _flashOffsetY - y;
}
/**
* Copy the bounds, focus object, and deadzone info from an existing camera.
*
* @param Camera The camera you want to copy from.
*
* @return A reference to this FlxCamera object.
*/
public FlxCamera copyFrom(FlxCamera Camera)
{
if(Camera.bounds == null)
bounds = null;
else
{
if(bounds == null)
bounds = new FlxRect();
bounds.copyFrom(Camera.bounds);
}
target = Camera.target;
if(target != null)
{
if(Camera.deadzone == null)
deadzone = null;
else
{
if(deadzone == null)
deadzone = new FlxRect();
deadzone.copyFrom(Camera.deadzone);
}
}
return this;
}
/**
* The zoom level of this camera. 1 = 1:1, 2 = 2x zoom, etc.
*/
public float getZoom()
{
return _zoom;
}
/**
* The zoom level of this camera. 1 = 1:1, 2 = 2x zoom, etc.
*/
public void setZoom(float Zoom)
{
if(Zoom == 0)
_zoom = defaultZoom;
else
_zoom = Zoom;
setScale(_zoom,_zoom);
}
/**
* The scale mode of this camera.
*/
public int getScaleMode()
{
return _scaleMode;
}
/**
* The scale mode of this camera.
*/
public void setScaleMode(int ScaleMode)
{
if(ScaleMode == 0)
_scaleMode = defaultScaleMode;
else
_scaleMode = ScaleMode;
setScale(_zoom,_zoom);
}
/**
* The alpha value of this camera display (a number between 0.0 and 1.0).
*/
public float getAlpha()
{
return _alpha;
}
/**
* The alpha value of this camera display (a number between 0.0 and 1.0).
*/
public void setAlpha(float Alpha)
{
_alpha = Alpha;
}
/**
* The angle of the camera display (in degrees).
* Currently yields weird display results,
* since cameras aren't nested in an extra display object yet.
*/
public float getAngle()
{
return _angle;
}
/**
* The angle of the camera display (in degrees).
* Currently yields weird display results,
* since cameras aren't nested in an extra display object yet.
*/
public void setAngle(float Angle)
{
_angle = Angle;
_glCamera.rotate(Angle,0,0,1);
}
/**
* The color tint of the camera display.
*/
public int getColor()
{
return _color;
}
/**
* The color tint of the camera display.
*/
public void setColor(int Color)
{
_color = Color;
}
/**
* Whether the camera display is smooth and filtered, or chunky and pixelated.
* Default behavior is chunky-style.
*/
public boolean getAntialiasing()
{
return true;
}
/**
* Whether the camera display is smooth and filtered, or chunky and pixelated.
* Default behavior is chunky-style.
*/
public void setAntialiasing(boolean Antialiasing)
{
}
/**
* The scale of the camera object, irrespective of zoom.
* Currently yields weird display results,
* since cameras aren't nested in an extra display object yet.
*/
public FlxPoint getScale()
{
Stage stage = FlxG.getStage();
float X = _screenScaleFactorX/stage.getStageWidth()/_glCamera.viewportWidth;
float Y = _screenScaleFactorY/stage.getStageHeight()/_glCamera.viewportHeight;
return _point.make(X, Y);
}
/**
* The scale of the camera object, irrespective of zoom.
* Currently yields weird display results,
* since cameras aren't nested in an extra display object yet.
*/
public void setScale(float X, float Y)
{
Stage stage = FlxG.getStage();
int initialStageWidth = (int) (FlxG.width*FlxCamera.defaultZoom);
int initialStageHeight = (int) (FlxG.height*FlxCamera.defaultZoom);
float stageAspectRatio = initialStageWidth/(float)initialStageHeight;
float screenAspectRatio = stage.getStageWidth()/(float)stage.getStageHeight();
switch(_scaleMode)
{
case NO_SCALE:
_glCamera.setToOrtho(true,stage.getStageWidth()/X,stage.getStageHeight()/Y);
break;
case FIT:
if(screenAspectRatio >= stageAspectRatio)
_glCamera.setToOrtho(true,(initialStageHeight*screenAspectRatio)/X,initialStageHeight/Y);
else
_glCamera.setToOrtho(true,initialStageWidth/X,initialStageWidth/screenAspectRatio/Y);
break;
case FILL:
if(screenAspectRatio >= stageAspectRatio)
_glCamera.setToOrtho(true,initialStageWidth/X,initialStageWidth/screenAspectRatio/Y);
else
_glCamera.setToOrtho(true,(initialStageHeight*screenAspectRatio)/X,initialStageHeight/Y);
break;
case STRETCH:
default:
_glCamera.setToOrtho(true,initialStageWidth/X,initialStageHeight/Y);
break;
}
_screenScaleFactorX = stage.getStageWidth()/(_glCamera.viewportWidth*X);
_screenScaleFactorY = stage.getStageHeight()/(_glCamera.viewportHeight*Y);
}
/**
* Get the actual libgdx camera.
*
* @return A libgdx OrthograpicCamera.
*/
public OrthographicCamera getCamera()
{
return _glCamera;
}
/**
* Fill the camera with the specified color.
*
* @param Color The color to fill with in 0xAARRGGBB hex format.
* @param BlendAlpha Whether to blend the alpha value or just wipe the previous contents. Default is true.
*/
public void fill(int Color,boolean BlendAlpha)
{
int color = FlxU.multiplyColors(Color,_color);
if(((Color>>24)&0xff) == 0xff || !BlendAlpha)
{
FlxG._gl.glDisable(GL20.GL_BLEND);
FlxG._gl.glClearColor(((color>>16)&0xff)*0.00392f,((color>>8)&0xff)*0.00392f,(color&0xff)*0.00392f,((Color>>24)&0xff)*0.00392f);
FlxG._gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
}
else
{
FlxG._gl.glEnable(GL20.GL_BLEND);
FlxG._gl.glBlendFunc(GL20.GL_SRC_ALPHA,GL20.GL_ONE_MINUS_SRC_ALPHA);
ShapeRenderer flashGfx = ((GdxGraphics)FlxG.flashGfx).getShapeRenderer();
flashGfx.setProjectionMatrix(_glCamera.combined);
flashGfx.begin(ShapeType.Filled);
flashGfx.setColor(((color>>16)&0xff)*0.00392f,((color>>8)&0xff)*0.00392f,(color&0xff)*0.00392f,((Color>>24)&0xff)*0.00392f);
flashGfx.rect(0,0,width,height);
flashGfx.end();
}
}
/**
* Fill the camera with the specified color.
*
* @param Color The color to fill with in 0xAARRGGBB hex format.
*/
public void fill(int Color)
{
fill(Color,true);
}
/**
* Internal helper function, handles the actual drawing of all the special effects.
*/
void drawFX()
{
float alphaComponent;
//Draw the "flash" special effect onto the buffer
if(_fxFlashAlpha > 0.0f)
{
alphaComponent = _fxFlashColor>>24;
fill(((int)(((alphaComponent <= 0)?0xff:alphaComponent)*_fxFlashAlpha)<<24)+(_fxFlashColor&0x00ffffff));
}
//Draw the "fade" special effect onto the buffer
if(_fxFadeAlpha > 0.0f)
{
alphaComponent = _fxFadeColor>>24;
fill(((int)(((alphaComponent <= 0)?0xff:alphaComponent)*_fxFadeAlpha)<<24)+(_fxFadeColor&0x00ffffff));
}
//Changing the camera position after drawing causes problems.
//Shake offset is now applied in FlxG.lockCameras instead.
//if((_fxShakeOffset.x != 0) || (_fxShakeOffset.y != 0))
//{
// _glCamera.position.x = _flashOffsetX - x + _fxShakeOffset.x;
// _glCamera.position.y = _flashOffsetY - y + _fxShakeOffset.y;
//}
}
}
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