Polka dot spritesheet bug

[WilsonPercival]

Problem description

I already reported this: https://github.com/Scirra/Construct-bugs/issues/7855

I consider, that you are mistaken. Let's try to calculate the number of vertical circles using this formula:

(spriteSheetSize / (spriteSize * spriteCount)) / effectParam where

spriteSheetSize - spritesheet size; spriteSize - sprite size; spriteCount - number of sprites on the spritelist; effectParam - the value of the Dot size parameter of the Polka dot effect.

The sprite sheet is 32x32 in size.

With 5% value of the effect parameter, let's try to calculate the number of circles vertically:

(32 / (32 * 1)) / 0.05 = 20

We see that in the layout editor there are indeed 20 circles in height. Now let's make a clone of this sprite. The sprite sheet becomes 32x128 in size.

Let's now try to calculate the number of circles vertically:

(128 / (32 * 2)) / 0.05 = 40

We see that in the layout editor there are indeed 40 circles in height. Do you really still think that a difference of 2 times is an error in floating point calculations?

Attach a .c3p

polka_dot_spritesheet_bug_r42b.zip

Steps to reproduce

1. Open a project.
2. Make a clone of the sprite.

Observed result

Expected result

More details

Affected browsers/platforms: Chrome

First affected release: Broke in r42b because it's the oldest version I can test.

System details

View details

Platform information Product: Construct 3 r381 (beta) Browser: Chrome 122.0.6261.69 Browser engine: Chromium Context: browser Operating system: Windows 11 Device type: desktop Device pixel ratio: 1.5 Logical CPU cores: 16 Approx. device memory: 8 GB User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Language setting: en-US

Local storage Storage quota (approx): 283 gb Storage usage (approx): 1.2 gb (0.4%) Persistant storage: Yes

Browser support notes This list contains missing features that are not required, but could improve performance or user experience if supported.

Nothing is missing. Everything is OK! WebGL information Version string: WebGL 2.0 (OpenGL ES 3.0 Chromium) Numeric version: 2 Supports NPOT textures: yes Supports GPU profiling: no Supports highp precision: yes Vendor: Google Inc. (AMD) Renderer: ANGLE (AMD, AMD Radeon(TM) Graphics (0x00001638) Direct3D11 vs_5_0 ps_5_0, D3D11) Major performance caveat: no Maximum texture size: 16384 Point size range: 1 to 1024 Extensions:

EXT_clip_control EXT_color_buffer_float EXT_color_buffer_half_float EXT_conservative_depth EXT_depth_clamp EXT_disjoint_timer_query_webgl2 EXT_float_blend EXT_polygon_offset_clamp EXT_texture_compression_bptc EXT_texture_compression_rgtc EXT_texture_filter_anisotropic EXT_texture_norm16 KHR_parallel_shader_compile NV_shader_noperspective_interpolation OES_draw_buffers_indexed OES_texture_float_linear OVR_multiview2 WEBGL_blend_func_extended WEBGL_clip_cull_distance WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context WEBGL_multi_draw WEBGL_polygon_mode WEBGL_provoking_vertex Audio information System sample rate: 48000 Hz Output channels: 2 Output interpretation: speakers Supported decode formats:

WebM Opus (audio/webm;codecs=opus) WebM Vorbis (audio/webm;codecs=vorbis) MPEG-4 Opus (audio/mp4;codecs=opus) MPEG-4 AAC (audio/mp4;codecs=mp4a.40.2) MP3 (audio/mpeg) FLAC (audio/flac) PCM WAV (audio/wav;codecs=1) Supported encode formats:

WebM Opus (audio/webm;codecs=opus) Video information Supported decode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08) WebM VP9 (video/webm;codecs=vp9) WebM VP8 (video/webm;codecs=vp8) MPEG-4 AV1 (video/mp4;codecs=av01.0.00M.08) MPEG-4 H.265 (video/mp4;codecs=hev1.1.2.L93.B0) MPEG-4 H.264 (video/mp4;codecs=avc1.420034) Supported encode formats:

WebM AV1 (video/webm;codecs=av01.0.00M.08) WebM VP9 (video/webm;codecs=vp9) WebM VP8 (video/webm;codecs=vp8) WebM H.264 (video/webm;codecs=avc1.420034)