RandyGaul

Angular Motor

Standalone 1-DOF angular velocity drive around an axis, with a torque-bounded impulse. Used without any other rotational constraint to spin one body relative to another (e.g. a turret, a powered wheel around a hinge-free axis).

Same row shape as the hinge motor in hinge_axis.md, but used on its own (not composed into a hinge). No alignment, no limit -- just a velocity target with a cap.

Setup

• a -- world-frame axis to spin around (attached to one of the bodies, or shared after alignment)
• v_target -- desired scalar angular velocity (wB - wA) . a

RandyGaul

// Coroutine-powered state machine. Each state is a separate coroutine function.
// A generic driver manages one state coroutine at a time.
//
// Example:
//   init_sm(e, MY_IDLE,
//       [MY_IDLE]    = my_idle_fn,
//       [MY_ATTACK]  = my_attack_fn,
//   );
//   e->sm.on_exit = my_on_exit;
//   e->sm.on_enter = my_on_enter;

RandyGaul

// Occluder edge extraction utility.
//
// Computes the union boundary of axis-aligned bounding boxes (AABBs), producing
// a set of merged edge segments. Handles overlapping/adjacent AABBs correctly
// by merging shared edges.
//
// Usage:
//   OccluderQuery q = occluder_begin();
//   occluder_add_aabb(&q, aabb);
//   ...

RandyGaul

// SV - Save Version
// This file has an API for saving binary data with versioning support for backwards compatibility.
// Original API design by Media Molecule.
// See: https://gist.githubusercontent.com/OswaldHurlem/4810ad510669097db872c6de305c9df0/raw/2fdf47eead527e954d29950aa41debf34547e5bd/mmalex_serialization_and_formats.log
// 
// Design specs:
// + Very fast reads/writes
// + Backwards compat
// - Not self-describing (serializes opaque data)
// + The code itself describes the data, and versioning, all in one place

RandyGaul

 renderer
- sprite as pod type
- Online atlas compiler
- SDF shapes 
    - Local aa
    - Local rounding
    - Alpha discard cutouts and shrink wrap OBB quads
- Polylines with SDF compatible triangulation
- On demand glyph rasterization
    - No need to declare utf8 codes up-front, extremely efficient storage for blur/bold/italic, multiple languages, multiple fonts, etc

RandyGaul

#define PICO_ECS_IMPLEMENTATION
#include <thirdparty/pico_ecs.h>

ecs_t* g_ecs;

//--------------------------------------------------------------------------------------------------
// Components.

// Adds a component to the ECS.
// ...You must define T_ctor and T_dtor for your component.

RandyGaul

//--------------------------------------------------------------------------------------------------
// Basic input polling.
// Original implementation by Noel Berry, taken from his Blah code on GitHub.

#define joy_press cf_joypad_button_just_pressed
#define joy_release cf_joypad_button_just_released
#define joy_axis cf_joypad_axis
#define joy_axis_prev cf_joypad_axis_prev
#define joy_down cf_joypad_button_down
#define joy_up !cf_joypad_button_down

RandyGaul

#include <stdio.h>
#include <stdlib.h>

//--------------------------------------------------------------------------------------------------
// Dynamic array public API.

#define array_count(a)     ((a) ? ARRAY_HEADER(a)->len : 0)
#define array_cap(a)       ((a) ? ARRAY_HEADER(a)->cap : 0)
#define array_free(a)      ((a) ? (free(ARRAY_HEADER(a)), (a)=NULL, 0) : 0)
#define array_add(a, val)  (array__maybegrow(a, 1), (a)[ARRAY_HEADER(a)->len++] = (val))

RandyGaul

function Player:climb()
	self.climbing = true
	self:set_facing(self.climbable_wall_facing)

	-- Initially zero out all y-vel to "latch" onto the wall.
	if not self.climb_sliding then
		self.vy = 0
	end
	self.vx = 0
	self.climbing_needs_reset = true

RandyGaul

#pragma once

#ifndef VMATH_INLINE
#	define VMATH_INLINE inline
#endif

VMATH_INLINE float clamp(float x, float minv, float maxv) { return fmaxf(minv, fminf(maxv, x)); }
VMATH_INLINE float lerp(float a, float b, float t) { return a * (1.0f - t) + b * t; }

struct V3