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path: root/src/modules/sparkler/particle.h
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2023-12-16sdl_fb,modules/sparkler: make bit fields unsignedVito Caputo
This oversight was triggering warnings on an M1 Macbook/clang.
2023-08-30sparkler: parameterize particlesVito Caputo
Having everything in fixed defines severely constrains the diversity of particle behaviors and appearances. This commit has been sitting around bitrotting since 2017, but now that there's all this settings infra. and randomizing via rtv, it seems worth landing, so I've rebased and am merging to prevent a bitrot->rebase recurrence. As-is, this commit ~minimally establishes a somewhat streamlined parameterizing mechanism w/X-Macro patterns, while wiring up a few of the obvious use cases surrounding xplode/burst, colorizing the default sparkler explosions while at it. It appears that when I first hacked this up I did some experimentation with parameters as well, so there are some tweaks to the behavior as opposed to a strict conversion of the fixed defines to parameters. They seem minor enough to just leave be. Plus a few minor optimizations like converting divides to multiplies were in there. Future commits can now wire up settings to choose from parameter presets for different sparklers...
2022-07-20modules/sparkler: s/rand/rand_r/ and wire up seedVito Caputo
This is a little contorted but not too bad. The input to particles_new() is just a const conf struct, so instead of passing in the seed value for particles_t to contain, a pointer to where the seed lives is passed in via the conf. This requires the caller to persist a seed somewhere outside the particles instance, but at least in rototiller we already have that conveniently in til_module_context_t.
2021-10-01*: librototiller->libtilVito Caputo
Largely mechanical rename of librototiller -> libtil, but introducing a til_ prefix to all librototiller (now libtil) functions and types where a rototiller prefix was absent. This is just a step towards a more libized librototiller, and til is just a nicer to type/read prefix than rototiller_.
2020-09-11module/sparkler: implement some BSP drawing settingsVito Caputo
This commit adds a few settings for visualizing the octree BSP: show_bsp_leafs (on/off): Draw wireframe cubes around octree leaf nodes show_bsp_leafs_min_depth (0,4,6,8,10): Set minimum octree depth for leaf nodes displayed show_bsp_matches (on/off): Draw lines connecting BSP search matches show_bsp_matches_affected_only (on/off): Limit drawn BSP search matches to only matches actually affected by the simulation The code implementing this stuff is a bit crufty, fb_fragment_t had to be pulled down to the sim ops for example and whether that actually results in drawing occurring during the sim phase depends on the config used and how the particle implementations react to the config... it's just gross. This matters because the caller used to know only the draw phase touched fb_fragment_t, and because of that the fragment was zeroed after sim and before draw in parallel. But now the caller needs to know if the config would make sim do some drawing, and do the fragment zeroing before sim instead, and skip the zero before draw to not lose what sim drew. It's icky, but I'll leave it for now, at least it's isolated to the sparkler.
2017-04-26sparkler: add virtual flag to particle_props_tVito Caputo
The burst particle abused a zero mass to circumvent the effects of aging. Instead use an explicit virtual flag to suppress aging, change busrt_cb to ignore all virtual particles instead of only its center. Previously burst_cb would thrust other bursts like any other particle, and this was incorrect. Now burst centers are always stationary, even when they overlap other bursts.
2017-01-18*: move source into src/ subdirVito Caputo
Restoring some organizational sanity since adopting autotools.
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