mirror of
https://github.com/photonstorm/phaser
synced 2024-12-25 12:33:38 +00:00
116 lines
3.3 KiB
JavaScript
116 lines
3.3 KiB
JavaScript
/**
|
|
* @author Richard Davey <rich@photonstorm.com>
|
|
* @copyright 2018 Photon Storm Ltd.
|
|
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
|
|
*/
|
|
|
|
/**
|
|
* Renders this Game Object with the Canvas Renderer to the given Camera.
|
|
* The object will not render if any of its renderFlags are set or it is being actively filtered out by the Camera.
|
|
* This method should not be called directly. It is a utility function of the Render module.
|
|
*
|
|
* @method Phaser.GameObjects.Blitter#renderCanvas
|
|
* @since 3.0.0
|
|
* @private
|
|
*
|
|
* @param {Phaser.Renderer.Canvas.CanvasRenderer} renderer - A reference to the current active Canvas renderer.
|
|
* @param {Phaser.GameObjects.Blitter} src - The Game Object being rendered in this call.
|
|
* @param {number} interpolationPercentage - Reserved for future use and custom pipelines.
|
|
* @param {Phaser.Cameras.Scene2D.Camera} camera - The Camera that is rendering the Game Object.
|
|
* @param {Phaser.GameObjects.Components.TransformMatrix} parentMatrix - This transform matrix is defined if the game object is nested
|
|
*/
|
|
var BlitterCanvasRenderer = function (renderer, src, interpolationPercentage, camera, parentMatrix)
|
|
{
|
|
var list = src.getRenderList();
|
|
|
|
if (list.length === 0)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var ctx = renderer.gameContext;
|
|
|
|
// Alpha
|
|
|
|
var alpha = camera.alpha * src.alpha;
|
|
|
|
if (alpha === 0)
|
|
{
|
|
// Nothing to see, so abort early
|
|
return;
|
|
}
|
|
else if (renderer.currentAlpha !== alpha)
|
|
{
|
|
renderer.currentAlpha = alpha;
|
|
ctx.globalAlpha = alpha;
|
|
}
|
|
|
|
// Blend Mode
|
|
|
|
renderer.setBlendMode(src.blendMode);
|
|
|
|
var cameraScrollX = src.x - camera.scrollX * src.scrollFactorX;
|
|
var cameraScrollY = src.y - camera.scrollY * src.scrollFactorY;
|
|
|
|
ctx.save();
|
|
|
|
if (parentMatrix !== undefined)
|
|
{
|
|
var matrix = parentMatrix.matrix;
|
|
ctx.transform(matrix[0], matrix[1], matrix[2], matrix[3], matrix[4], matrix[5]);
|
|
}
|
|
|
|
// Render bobs
|
|
for (var i = 0; i < list.length; i++)
|
|
{
|
|
var bob = list[i];
|
|
var flip = (bob.flipX || bob.flipY);
|
|
var frame = bob.frame;
|
|
var cd = frame.canvasData;
|
|
var dx = frame.x;
|
|
var dy = frame.y;
|
|
var fx = 1;
|
|
var fy = 1;
|
|
|
|
var bobAlpha = bob.alpha * alpha;
|
|
|
|
if (bobAlpha === 0)
|
|
{
|
|
continue;
|
|
}
|
|
else if (renderer.currentAlpha !== bobAlpha)
|
|
{
|
|
renderer.currentAlpha = bobAlpha;
|
|
ctx.globalAlpha = bobAlpha;
|
|
}
|
|
|
|
if (!flip)
|
|
{
|
|
renderer.blitImage(dx + bob.x + cameraScrollX, dy + bob.y + cameraScrollY, bob.frame);
|
|
}
|
|
else
|
|
{
|
|
if (bob.flipX)
|
|
{
|
|
fx = -1;
|
|
dx -= cd.dWidth;
|
|
}
|
|
|
|
if (bob.flipY)
|
|
{
|
|
fy = -1;
|
|
dy -= cd.dHeight;
|
|
}
|
|
|
|
ctx.save();
|
|
ctx.translate(bob.x + cameraScrollX, bob.y + cameraScrollY);
|
|
ctx.scale(fx, fy);
|
|
ctx.drawImage(frame.source.image, cd.sx, cd.sy, cd.sWidth, cd.sHeight, dx, dy, cd.dWidth, cd.dHeight);
|
|
ctx.restore();
|
|
}
|
|
}
|
|
|
|
ctx.restore();
|
|
};
|
|
|
|
module.exports = BlitterCanvasRenderer;
|