Apple-2-SW/lawless-legends
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Trying to make math more accurate.

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This commit is contained in:
Martin Haye 2013-11-04 08:14:29 -08:00
parent d2e07e55e4
commit aa10516977
1 changed files with 8 additions and 10 deletions
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18
Platform/Apple/virtual/src/raycast/javascript/intcast.js
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@ -48,10 +48,10 @@ var allSprites = [
// Player attributes [ref BigBlue2_10]
var player = {
x : 7.0, // current x, y position
y : 10.5,
x : 11.5, // current x, y position
y : 1.5,
dir : 0, // the direction that the player is turning, either -1 for left or 1 for right.
angleNum : 0, // the current angle of rotation
angleNum : 4, // the current angle of rotation
speed : 0, // is the playing moving forward (speed = 1) or backwards (speed = -1).
moveSpeed : 0.25, // how far (in map units) does the player move each step/update
rotSpeed : 22.5 * Math.PI / 180 // how much does the player rotate each step/update (in radians)
@ -61,7 +61,7 @@ var options = 0;
var debugRay = null; /* Debugging info printed about this ray num, or null for none */
var debugSprite = 2; /* Debugging info printed about this sprite, or null for none */
var debugSprite = 3; /* Debugging info printed about this sprite, or null for none */
var maxAngleNum = 16;
@ -414,9 +414,9 @@ function intRenderSprites() {
// x-position on screen
var bSgnRy = wRy < 0 ? -1 : 1;
var wX = bSgnRy * pow2_w_w(log2_w_w(Math.abs(wRy)*256) - wLogDist + log2_w_w(252 / 8 / 0.38268343236509034) - wLog256);
var wX = bSgnRy * pow2_w_w(log2_w_w(Math.abs(wRy)*256) - wLogDist + log2_w_w(252 / 8 / 0.38268343236509034) - wLog256);
if (sprite.index == debugSprite)
console.log(" wRx=" + wRx + ", wRy=" + wRy + ", wSize=" + wSize + ", wX=" + wX);
console.log(" wRx/256=" + (wRx/256.0) + ", wRy/256=" + (wRy/256.0) + ", wSize=" + wSize + ", wX=" + wX);
// If no pixels on screen, skip it
var spriteLeft = (screenWidth/8/2) + wX - (wSize/2);
@ -469,8 +469,6 @@ 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)
@ -685,13 +683,13 @@ function sbyte(n) {
// Convert a float to an unsigned word by truncation
function uword(n) {
assert(n >=0 && n < 65536, "ubyte out of range");
assert(n >=0 && n < 65536, "uword out of range");
return parseInt(n);
}
// Convert a float to an signed word by truncation
function sword(n) {
assert(n >= -32768 && n < 32768, "sbyte out of range");
assert(n >= -32768 && n < 32768, "sword out of range");
return parseInt(n);
}