From 3c0806a489a12d882f00cb1a5406e6291ad5b876 Mon Sep 17 00:00:00 2001 From: Paul Ewing Date: Sun, 21 Aug 2022 13:37:18 -0600 Subject: Add pcewing Speedo v3 keymap (#18118) * Add pcewing Speedo v3 keymap * Add readme and code quality improvements --- users/pcewing/README.md | 85 ++++++++++++++++++++++ users/pcewing/key_repeater.c | 168 +++++++++++++++++++++++++++++++++++++++++++ users/pcewing/key_repeater.h | 68 ++++++++++++++++++ users/pcewing/rules.mk | 1 + 4 files changed, 322 insertions(+) create mode 100644 users/pcewing/README.md create mode 100644 users/pcewing/key_repeater.c create mode 100644 users/pcewing/key_repeater.h create mode 100644 users/pcewing/rules.mk (limited to 'users') diff --git a/users/pcewing/README.md b/users/pcewing/README.md new file mode 100644 index 0000000000..0073b4f492 --- /dev/null +++ b/users/pcewing/README.md @@ -0,0 +1,85 @@ +# User Space Code for Paul Ewing + +This folder contains my user space code. + +## Key Repeater + +I've implemented a key repeater utility in [./key_repeater.h](./key_repeater.h) +and [./key_repeater.c](./key_repeater.c) that is similar in concept to the +"rapid fire" feature many game controllers come with. The intent behind this is +that the user can hold down a key and while it is pressed, a keycode will be +repeatedly sent. I have found this useful in certain games and during game +development. + +The duration of the key press as well as the time between key presses is +slightly randomized by design. This is to simulate more realistic human +behavior. By setting the minimum and maximum duration fields to the same value +in the configuration, this randomization can be disabled. + +**Note:** Please be aware that this might be against the terms of service in +certain games so use your own discretion before using this feature. + +### How to Use + +Define the repeater and then configure and allocate it in your keymap's +initialization process: + +```c +static struct key_repeater_t* click_repeater = NULL; + +void keyboard_post_init_user(void) { + // Seed the random number generator which is used by the key repeater + srand(timer_read32()); + + // Configure and instantiate a key repeater for mouse button 1 "rapid fire" + struct key_repeater_config_t cfg = { + .key = KC_BTN1, // Press mouse button 1 (Left click) + .key_duration_min = 20, // Press key for 20 to 50 milliseconds + .key_duration_max = 50, + .wait_duration_min = 90, // Wait for 90 to 140 milliseconds before pressing again + .wait_duration_max = 140, + }; + + click_repeater = kr_new(&cfg); +} +``` + +Make sure the key repeater is polled during matrix scanning: + +```c +void matrix_scan_user(void) { + kr_poll(click_repeater); +} +``` + +Define a custom keycode that will enable/disable the repeater: + +```c +enum { + RP_BTN1 = SAFE_RANGE, // Click repeatedly while key is held +}; +``` + +Assign the keycode to a key in your `LAYOUT(...)` macro. + +Define the logic to enable/disable the repeater when the custom keycode is +pressed or released: + +```c +bool process_record_user(uint16_t keycode, keyrecord_t *record) { + switch (keycode) { + case RP_BTN1: + if (record->event.pressed) { + kr_enable(click_repeater); + } else { + kr_disable(click_repeater); + } + return false; + default: + return true; + } +} +``` + +For a full working example in own of my own keymaps, see: +[keyboards/cozykeys/speedo/v3/keymaps/pcewing/keymap.c](../../keyboards/cozykeys/speedo/v3/keymaps/pcewing/keymap.c) diff --git a/users/pcewing/key_repeater.c b/users/pcewing/key_repeater.c new file mode 100644 index 0000000000..6c77d45b5f --- /dev/null +++ b/users/pcewing/key_repeater.c @@ -0,0 +1,168 @@ +/* + * Copyright 2022 Paul Ewing + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#include "key_repeater.h" +#include +#include QMK_KEYBOARD_H + +enum key_repeater_state { + KR_DISABLED, + KR_WAITING, + KR_BUTTON_DOWN, + + __KR_STATE_COUNT +}; + +struct key_repeater_t { + int key; + uint32_t key_duration_min; + uint32_t key_duration_max; + uint32_t wait_duration_min; + uint32_t wait_duration_max; + + enum key_repeater_state state; + uint32_t previous_button_down; + uint32_t previous_button_up; + uint32_t key_duration; + uint32_t wait_duration; +}; + +// Utility functions +uint32_t get_rand(uint32_t min, uint32_t max); + +// State handler function table +void kr_waiting(struct key_repeater_t *kr); +void kr_button_down(struct key_repeater_t *kr); + +typedef void (*kr_state_handler)(struct key_repeater_t *kr); +static kr_state_handler kr_state_handlers[] = { + [KR_DISABLED] = NULL, + [KR_WAITING] = kr_waiting, + [KR_BUTTON_DOWN] = kr_button_down, +}; + +struct key_repeater_t* kr_new(struct key_repeater_config_t* cfg) { + struct key_repeater_t* kr = (struct key_repeater_t*)malloc(sizeof(struct key_repeater_t)); + + if (cfg) { + kr->key = cfg->key; + kr->key_duration_min = cfg->key_duration_min; + kr->key_duration_max = cfg->key_duration_max; + kr->wait_duration_min = cfg->wait_duration_min; + kr->wait_duration_max = cfg->wait_duration_max; + } else { + kr->key = KC_NO; + kr->key_duration_min = 0; + kr->key_duration_max = 0; + kr->wait_duration_min = 0; + kr->wait_duration_max = 0; + } + + kr->state = KR_DISABLED; + kr->previous_button_down = 0; + kr->previous_button_up = 0; + kr->key_duration = 0; + kr->wait_duration = 0; + + return kr; +} + +void kr_free(struct key_repeater_t **kr) { + if (kr && *kr) { + free(*kr); + *kr = NULL; + } +} + +void kr_enable(struct key_repeater_t *kr) { + if (!kr || kr->key == KC_NO) { + return; + } + + if (kr->state != KR_DISABLED) { + return; + } + kr->state = KR_WAITING; + kr->previous_button_down = 0; + kr->previous_button_up = 0; + kr->key_duration = 0; + kr->wait_duration = 0; +} + +void kr_disable(struct key_repeater_t *kr) { + if (!kr || kr->key == KC_NO) { + return; + } + + if (kr->state == KR_BUTTON_DOWN) { + unregister_code(kr->key); + } + kr->state = KR_DISABLED; +} + +void kr_poll(struct key_repeater_t *kr) { + if (!kr || kr->key == KC_NO) { + return; + } + + kr_state_handler handler = kr_state_handlers[kr->state]; + if (handler) { + (handler)(kr); + } +} + +void kr_waiting(struct key_repeater_t *kr) { + if (!kr || kr->key == KC_NO) { + return; + } + + uint32_t now = timer_read32(); + if (now > (kr->previous_button_up + kr->wait_duration)) { + kr->state = KR_BUTTON_DOWN; + kr->previous_button_down = now; + if (kr->key_duration_min == kr->key_duration_max) { + kr->key_duration = kr->key_duration_min; + } else { + kr->key_duration = get_rand(kr->key_duration_min, kr->key_duration_max); + } + register_code(kr->key); + } +} + +void kr_button_down(struct key_repeater_t *kr) { + if (!kr || kr->key == KC_NO) { + return; + } + + uint32_t now = timer_read32(); + if (now > (kr->previous_button_down + kr->key_duration)) { + kr->state = KR_WAITING; + kr->previous_button_up = now; + if (kr->wait_duration_min == kr->wait_duration_max) { + kr->wait_duration = kr->wait_duration_min; + } else { + kr->wait_duration = get_rand(kr->wait_duration_min, kr->wait_duration_max); + } + unregister_code(kr->key); + } +} + +// Return a random number between min and max; assumes that the random number +// generator has already been seeded +uint32_t get_rand(uint32_t min, uint32_t max) { + return (rand() % (max - min)) + min; +} diff --git a/users/pcewing/key_repeater.h b/users/pcewing/key_repeater.h new file mode 100644 index 0000000000..30b7f748ff --- /dev/null +++ b/users/pcewing/key_repeater.h @@ -0,0 +1,68 @@ +/* + * Copyright 2022 Paul Ewing + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#pragma once + +// The key_repeater_config_t type holds user configurable options set when +// allocating a new key repeater. +struct key_repeater_config_t { + // The key code that will be repeatedly registered + int key; + + // The minimum amount of time to press down the key when registered + const uint32_t key_duration_min; + + // The maximum amount of time to press down the key when registered + const uint32_t key_duration_max; + + // The minimum amount of time to wait between registering key presses + const uint32_t wait_duration_min; + + // The maximum amount of time to wait between registering key presses + const uint32_t wait_duration_max; +}; + +// The key_repeater_t type represents a key repeater. This is similar to the +// "Rapid fire" feature on many game controllers. The intention behind this is +// to periodically send a key code while the user is pressing a key. +// +// The duration of the key press as well as the time between key presses is +// slightly randomized by design. This is to simulate more realistic human +// behavior. By setting the minimum and maximum duration fields to the same +// value in the configuration, this randomization can be disabled. +// +// This type is intentionally opaque to avoid the user setting internal fields +// directly. It must be allocated and destroyed using the kr_new() and +// kr_free() functions respectively. +struct key_repeater_t; + +// Allocate a new key repeater. +struct key_repeater_t* kr_new(struct key_repeater_config_t* cfg); + +// Release an allocated key repeater. +void kr_free(struct key_repeater_t** kr); + +// Enable the key repeater such that it will start periodically registering the +// configured key code. +void kr_enable(struct key_repeater_t* kr); + +// Disable the key repeater such that it will stop periodically registering the +// configured key code. +void kr_disable(struct key_repeater_t* kr); + +// Poll the key repeater to execute, tyically called from matrix_scan_user(). +void kr_poll(struct key_repeater_t* kr); diff --git a/users/pcewing/rules.mk b/users/pcewing/rules.mk new file mode 100644 index 0000000000..35d0bc3ab7 --- /dev/null +++ b/users/pcewing/rules.mk @@ -0,0 +1 @@ +SRC += key_repeater.c -- cgit v1.2.1