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Fix disappearing sprites

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This commit is contained in:
RedEnchilada 2016-05-07 12:54:31 -05:00
parent 59aece2f63
commit 536dc9e2c0
1 changed files with 4 additions and 4 deletions
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8
level/Level.js
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@ -10,13 +10,13 @@ Level = function(levelName) {
level.map = LevelDatabase[levelName];
// A set of 512x512 blocks that entities are contained in.
// A set of blocks that entities are contained in.
// Blocks two grid spaces away (in a square, corners excluded) from the camera
// are thunk and rendered in a frame.
var entityGrid = {};
function getGridIndex(x, y) {
return Math.floor(x/512) + Math.floor(y/512)*512;
return Math.floor(x/600) + Math.floor(y/600)*512;
// If a map is bigger than 200k pixels one way then you have other problems.
}
@ -66,7 +66,7 @@ Level = function(levelName) {
angle, distance;
xdist = entity.position.x - camera.x;
ydist = entity.position.y - camera.y;
angle = (Math.atan2(ydist, xdist) - camera.angle + Math.PI) % (2 * Math.PI) - Math.PI;
angle = (Math.atan2(ydist, xdist) - camera.angle + Math.PI * 3) % (2 * Math.PI) - Math.PI;
distance = Math.sqrt(ydist*ydist + xdist*xdist);
if (distance > 1024 || distance < 16 || Math.abs(angle) > Math.PI/3) {
@ -136,7 +136,7 @@ Level = function(levelName) {
510, 511, 512, 513, 514,
1023, 1024, 1025
];
var pos = getGridIndex(camera.x, camera.y); // todo use camera position
var pos = getGridIndex(camera.x, camera.y);
// Build up an array separately so that we can modify the entity arrays during the callback.
var objs = [];