Apple-2-SW/lawless-legends
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Took out visibleSprites stuff which wouldn't work well on the II.

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This commit is contained in:
Martin Haye 2013-11-03 11:58:38 -08:00
parent 41db1087ee
commit d2e07e55e4
1 changed files with 15 additions and 45 deletions
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60
Platform/Apple/virtual/src/raycast/javascript/intcast.js
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@ -130,8 +130,6 @@ function init() {
}
var spriteMap;
var visibleSprites = [];
var oldVisibleSprites = [];
function initSprites() {
spriteMap = [];
@ -352,18 +350,6 @@ function printTbl(arr) {
console.log(line);
}
function clearSprites() {
// clear the visible sprites array but keep a copy in oldVisibleSprites for later.
// also mark all the sprites as not visible so they can be added to visibleSprites again during raycasting.
oldVisibleSprites = [];
for (var i=0;i<visibleSprites.length;i++) {
var sprite = visibleSprites[i];
oldVisibleSprites[i] = sprite;
sprite.visible = false;
}
visibleSprites = [];
}
function intRenderSprites() {
var sinT = Math.sin(-playerAngle());
@ -404,7 +390,7 @@ function intRenderSprites() {
var wLogDy = log2_w_w(uword(Math.abs(dy)*256));
var wRx = bSgnDx*bSgnCosT*pow2_w_w(wLogDx + wLogCosT - wLog256) -
bSgnDy*bSgnSinT*pow2_w_w(wLogDy + wLogSinT - wLog256);
// If sprite is behind the viewer, skip it.
if (wRx < 0) {
if (sprite.index == debugSprite)
@ -464,17 +450,6 @@ function intRenderSprites() {
img.style.height = wSize + "px";
img.style.zIndex = wSize;
}
// hide the sprites that are no longer visible
for (var i=0;i<oldVisibleSprites.length;i++) {
var sprite = oldVisibleSprites[i];
if (visibleSprites.indexOf(sprite) < 0) {
console.log("No longer visible sprite " + sprite.index);
sprite.visible = false;
sprite.img.style.display = "none";
}
}
}
function floatRenderSprites() {
@ -482,8 +457,8 @@ function floatRenderSprites() {
var sinT = Math.sin(-playerAngle());
var cosT = Math.cos(-playerAngle());
for (var i=0;i<visibleSprites.length;i++) {
var sprite = visibleSprites[i];
for (var i=0;i<allSprites.length;i++) {
var sprite = allSprites[i];
var img = sprite.img;
img.style.display = "block";
@ -494,6 +469,16 @@ function floatRenderSprites() {
// Apply rotation to the position
var rx = (dx * cosT) - (dy * sinT);
var ry = (dx * sinT) + (dy * cosT);
if (sprite.index == debugSprite)
console.log(" rx=" + rx);
if (rx < 0) {
if (sprite.index == debugSprite)
console.log(" behind viewer.");
sprite.visible = false;
sprite.img.style.display = "none";
continue;
}
var sqDist = rx*rx + ry*ry;
var dist = Math.sqrt(sqDist);
@ -514,17 +499,6 @@ function floatRenderSprites() {
img.style.zIndex = parseInt(size);
}
// hide the sprites that are no longer visible
for (var i=0;i<oldVisibleSprites.length;i++) {
var sprite = oldVisibleSprites[i];
if (visibleSprites.indexOf(sprite) < 0) {
console.log("No longer visible sprite " + sprite.index);
sprite.visible = false;
sprite.img.style.display = "none";
}
}
}
function updateOverlay() {
@ -651,8 +625,6 @@ function castRays(force)
console.log("Cast: x=" + player.x + ", y=" + player.y + ", angle=" + player.angleNum);
clearSprites();
// Cast all the rays and record the data [ref BigBlue2_40]
lineData = [];
for (var rayNum = 0; rayNum < 63; rayNum++) {
@ -758,12 +730,14 @@ function pow2(n, bits) {
// Fast log2: take ubyte and produce ubyte 3.5 fixed-point: base-2 logarithm
function log2_b_b(n) {
assert(n >= 0 && n <= 255, "input for log2_b_b must be 0..255");
return tbl_log2_b_b[n];
}
// Fast pow2: take ubyte 3.5 fixed-point logarithm, produce high byte: (2^n)>>8,
// that is, pow2_b_b(log2_b_b(x)+log2_b_b(y)) =~ (x*y)>>8
function pow2_b_b(n) {
assert(n >= 0 && n <= 255, "input for pow2_b_b must be 0..255");
return tbl_pow2_b_b[n];
}
@ -928,10 +902,6 @@ function intCast(x)
// Perform DDA - digital differential analysis
while (true)
{
if (spriteMap[bMapY][bMapX] && !spriteMap[bMapY][bMapX].visible) {
spriteMap[bMapY][bMapX].visible = true;
visibleSprites.push(spriteMap[bMapY][bMapX]);
}
// Jump to next map square in x-direction, OR in y-direction
if (uless_bb(bSideDistX, bSideDistY)) {
bMapX += bStepX;