{"id":3293,"date":"2014-10-12T01:15:21","date_gmt":"2014-10-11T22:15:21","guid":{"rendered":"http:\/\/unitycoder.com\/blog\/?p=3293"},"modified":"2014-10-23T21:23:50","modified_gmt":"2014-10-23T18:23:50","slug":"2d-visibility-shadow-for-unity-indie","status":"publish","type":"post","link":"https:\/\/unitycoder.com\/blog\/2014\/10\/12\/2d-visibility-shadow-for-unity-indie\/","title":{"rendered":"2D Visibility \/ Shadow"},"content":{"rendered":"

\"2d_visibility_shadow_casting_unity_1\"<\/p>\n

Started converting this 2D visibility\/light script ( http:\/\/ncase.me\/sight-and-light\/<\/a> ) to unity, finally some progress!
\nbtw. lines are drawn using GLDebug from : http:\/\/www.unity3d-france.com\/unity\/phpBB3\/viewtopic.php?f=24&t=5409<\/a><\/p>\n

Unity forum thread:<\/strong> http:\/\/forum.unity3d.com\/threads\/2d-visibility-shadow-free.275698\/<\/a><\/p>\n

—<\/p>\n

TODO:<\/strong>
\n – Quad segments are currently crossed..<\/del>
\n– Fix mesh generation <\/del>*Temporary fix:\u00a0 insert extra boxes outside the view..
\n– Source cleaning up
\n– Publish to github<\/del>
\n– Optimize
\n– Some documentation
\n– Try raster version (bresenham + floodfill)
\n– Support for moving objects
\n– Sprite support (but unity indie has quad sprite mesh, no tight mesh generation..needs extra script to generate helper points for sprite image edges..?)
\n– Better system for finding edge segments
\n– …<\/p>\n

Stats:<\/strong>
\n– 20 obstacles (~80 vertices) : ~45-50ms per frame (in editor, with slow’ish pc)<\/p>\n

Webplayer:<\/strong>
\nhttp:\/\/unitycoder.com\/upload\/demos\/2DVisibility\/v1\/<\/a> (v1, still broken)
\nhttp:\/\/unitycoder.com\/upload\/demos\/2DVisibility\/v2\/<\/a> (v2, almost done)<\/p>\n


\nSource:<\/strong>
\nhttps:\/\/github.com\/unitycoder\/2DShadow<\/a> (Please help improving the code!)<\/p>\n

Previous attempt:<\/strong>
\nShadow casting 2D : http:\/\/unitycoder.com\/blog\/2014\/02\/10\/shadow-casting-2d\/<\/a> (using pseudo angles, unfinished<\/p>\n

—<\/p>\n

Image#2:<\/strong> Few problems fixed, mesh still broken..somehow cannot make the light vertices go in to “correct” world space(?)<\/p>\n

\"2d_visibility_shadow_casting_unity_2\"<\/p>\n

—<\/p>\n

Image#3:<\/strong> Mesh fixed, but still starts “stretching” when mouse moves away from center..<\/p>\n

\"2d_visibility_shadow_casting_unity_3\"<\/p>\n

—<\/p>\n

Image#4:<\/strong> Good enough..(added hidden boxes outside the view, to avoid broken mesh *hidden box idea from denamond<\/em>)<\/p>\n

\"2d_visibility_shadow_casting_unity_4\"<\/p>\n

—<\/p>\n

Image#5:<\/strong> Current profiler view, gets quite slow with many objects..need to start optimizing<\/p>\n

\"2d_visibility_shadow_casting_unity_profiler_1\"<\/a>(click image to view)<\/p>\n

—<\/p>\n

Image#6:<\/strong> Testing visibility with Martt’s dual camera depth mask<\/a> system (see the 2nd sphere is partly hidden)<\/p>\n

\"2d_visibility_shadow_casting_unity_camera_mask_5\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Started converting this 2D visibility\/light script ( http:\/\/ncase.me\/sight-and-light\/ ) to unity, finally some progress! btw. lines are drawn using GLDebug from : http:\/\/www.unity3d-france.com\/unity\/phpBB3\/viewtopic.php?f=24&t=5409 Unity forum thread: http:\/\/forum.unity3d.com\/threads\/2d-visibility-shadow-free.275698\/ — TODO: – Quad segments are currently crossed.. – Fix mesh generation *Temporary fix:\u00a0 insert extra boxes outside […]<\/p>\n","protected":false},"author":1,"featured_media":3302,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[660,1,3],"tags":[65,52,662,661,40,280,172],"class_list":["post-3293","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-opensource","category-uncategorized","category-unity3d","tag-2d","tag-light","tag-line-of-sight","tag-los","tag-shadow","tag-view","tag-visibility"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/unitycoder.com\/blog\/wp-content\/uploads\/2014\/10\/2d_visibility_shadow_casting_unity_3.jpg?fit=681%2C383&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p1KTaT-R7","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/comments?post=3293"}],"version-history":[{"count":23,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3293\/revisions"}],"predecessor-version":[{"id":3332,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/posts\/3293\/revisions\/3332"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media\/3302"}],"wp:attachment":[{"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/media?parent=3293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/categories?post=3293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unitycoder.com\/blog\/wp-json\/wp\/v2\/tags?post=3293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}