From 420ac2c8f2307ddcbe551972544bbe11f05ee7ff Mon Sep 17 00:00:00 2001
From: "Juan J. Martinez" <jjm@usebox.net>
Date: Mon, 27 May 2024 19:13:02 +0100
Subject: Avoid function declarator with no prototype errors

This is for SDCC 4.4.0 at least.
---
 game/src/game.c   | 12 ++++++------
 game/src/game.h   | 12 ++++++------
 game/src/main.c   |  8 ++++----
 game/src/main.h   |  4 ++--
 include/mplayer.h |  4 ++--
 include/spman.h   |  8 ++++----
 include/ubox.h    | 14 +++++++-------
 src/spman/spman.c |  8 ++++----
 8 files changed, 35 insertions(+), 35 deletions(-)

diff --git a/game/src/game.c b/game/src/game.c
index 2fea5a3..3f91e23 100644
--- a/game/src/game.c
+++ b/game/src/game.c
@@ -19,7 +19,7 @@
 
 #define BG_TILE_MAP 0x1800
 
-void init_map_entities()
+void init_map_entities(void)
 {
     const uint8_t *m = cur_map;
     uint8_t typ, last = 0;
@@ -83,7 +83,7 @@ void init_map_entities()
 
 }
 
-void draw_map()
+void draw_map(void)
 {
     // draw the map!
     //
@@ -96,7 +96,7 @@ void draw_map()
     ubox_write_vm((uint8_t *)BG_TILE_MAP, MAP_W * MAP_H, cur_map_data);
 }
 
-void draw_hud()
+void draw_hud(void)
 {
     uint8_t i;
 
@@ -189,7 +189,7 @@ uint8_t is_map_elevator_up(uint8_t x, uint8_t y)
     return (t == 14 || t == 15);
 }
 
-void update_enemy()
+void update_enemy(void)
 {
     // check for the player; if alive and not invulnerable!
     // we use small hit boxes
@@ -253,7 +253,7 @@ void update_enemy()
     spman_alloc_sprite(&sp);
 }
 
-void update_player()
+void update_player(void)
 {
     // to know if we need to update the walk animation
     uint8_t moved = 0;
@@ -371,7 +371,7 @@ void update_player()
     spman_alloc_fixed_sprite(&sp);
 }
 
-void run_game()
+void run_game(void)
 {
     uint8_t i;
 
diff --git a/game/src/game.h b/game/src/game.h
index 5f5d603..1354522 100644
--- a/game/src/game.h
+++ b/game/src/game.h
@@ -80,16 +80,16 @@ struct entity
     uint8_t flags;
     uint8_t delay;
     uint8_t frame;
-    void (*update)();
+    void (*update)(void);
 };
 
-void run_game();
+void run_game(void);
 
-void update_player();
-void update_enemy();
+void update_player(void);
+void update_enemy(void);
 
-void draw_map();
-void draw_hud();
+void draw_map(void);
+void draw_hud(void);
 
 void erase_battery(uint8_t x, uint8_t y);
 
diff --git a/game/src/main.c b/game/src/main.c
index c95fcc8..577fd5c 100644
--- a/game/src/main.c
+++ b/game/src/main.c
@@ -12,7 +12,7 @@
 // generated
 #include "tiles.h"
 
-void draw_menu()
+void draw_menu(void)
 {
     uint8_t i;
 
@@ -39,7 +39,7 @@ void draw_menu()
     ubox_enable_screen();
 }
 
-void draw_end_game()
+void draw_end_game(void)
 {
     ubox_disable_screen();
 
@@ -63,7 +63,7 @@ void draw_end_game()
     }
 }
 
-void draw_game_over()
+void draw_game_over(void)
 {
     ubox_disable_screen();
 
@@ -78,7 +78,7 @@ void draw_game_over()
     ubox_wait_for(128);
 }
 
-void main()
+void main(void)
 {
     //  PAL: 50/2 = 25 FPS
     // NTSC: 60/2 = 30 FPS
diff --git a/game/src/main.h b/game/src/main.h
index 9f7b628..606a07c 100644
--- a/game/src/main.h
+++ b/game/src/main.h
@@ -33,8 +33,8 @@ enum effects
     EFX_DEAD,
 };
 
-void draw_end_game();
-void draw_menu();
+void draw_end_game(void);
+void draw_menu(void);
 
 // store the selected control
 LOCAL uint8_t ctl;
diff --git a/include/mplayer.h b/include/mplayer.h
index 139dd9e..c13ac56 100644
--- a/include/mplayer.h
+++ b/include/mplayer.h
@@ -92,14 +92,14 @@ void mplayer_init_effects(const uint8_t *effects) __z88dk_fastcall;
  * If the player is stopped, [mplayer_stop](#mplayer_stop) must be called to
  * silence the PSG.
  */
-void mplayer_play();
+void mplayer_play(void);
 
 /**
  * Silences the PSG, stopping any sound.
  *
  * This doesn't stop the player if [mplayer_play](#mplayer_play) is called.
  */
-void mplayer_stop();
+void mplayer_stop(void);
 
 // @Sound effects
 
diff --git a/include/spman.h b/include/spman.h
index e8e27af..fa2a5c9 100644
--- a/include/spman.h
+++ b/include/spman.h
@@ -37,7 +37,7 @@
  *
  * it needs to be called before using any of the functions of the sprite manager.
  */
-void spman_init();
+void spman_init(void);
 
 /**
  * Allocates a pattern for sprite `type` using `data`.
@@ -121,7 +121,7 @@ void spman_alloc_sprite(const struct sprite_attr *sp);
  *
  * This doesn't affect sprites currently being shown on the screen.
  */
-void spman_sprite_flush();
+void spman_sprite_flush(void);
 
 // @Sprites on screen
 
@@ -136,7 +136,7 @@ void spman_sprite_flush();
  * [spman_alloc_sprite](#spman_alloc_sprite).
  *
  */
-void spman_update();
+void spman_update(void);
 
 /**
  * Hides all the sprites currently shown on screen.
@@ -144,6 +144,6 @@ void spman_update();
  * This doesn't affect any allocated sprites. To free allocated sprites use
  * [spman_sprite_flush](#spman_sprite_flush).
  */
-void spman_hide_all_sprites();
+void spman_hide_all_sprites(void);
 
 #endif //  _SPMAN_H
diff --git a/include/ubox.h b/include/ubox.h
index b045d4d..fa56741 100644
--- a/include/ubox.h
+++ b/include/ubox.h
@@ -69,7 +69,7 @@ void ubox_set_mode(uint8_t mode) __z88dk_fastcall;
 /**
  * Enables the screen.
  */
-void ubox_enable_screen();
+void ubox_enable_screen(void);
 
 /**
  * Disables the screen.
@@ -79,7 +79,7 @@ void ubox_enable_screen();
  *
  * Note that [ubox_set_mode](#ubox_set_mode) also enables the screen.
  */
-void ubox_disable_screen();
+void ubox_disable_screen(void);
 
 /**
  * Changes the screen colors.
@@ -158,7 +158,7 @@ void ubox_wvdp(uint8_t reg, uint8_t data);
  * | 0     | 60Hz      |
  * | 1     | 50Hz      |
  */
-uint8_t ubox_get_vsync_freq();
+uint8_t ubox_get_vsync_freq(void);
 
 // *INDENT-OFF*
 /**
@@ -311,7 +311,7 @@ void ubox_init_isr(uint8_t wait_ticks) __z88dk_fastcall;
  * ubox_set_user_isr(my_isr);
  * ```
  */
-void ubox_set_user_isr(void (*fn)()) __z88dk_fastcall;
+void ubox_set_user_isr(void (*fn)(void)) __z88dk_fastcall;
 
 /**
  * Waits for a maximum `wait_ticks` interrupts (see [ubox_init_isr](#ubox_init_isr)).
@@ -347,7 +347,7 @@ void ubox_set_user_isr(void (*fn)()) __z88dk_fastcall;
  * }
  * ```
  */
-void ubox_wait();
+void ubox_wait(void);
 
 /**
  * Waits for `frames` frames.
@@ -373,7 +373,7 @@ extern uint8_t ubox_tick;
  *
  * `ubox_tick` is a 8-bit global variable that is incremented on every interrupt.
  */
-void ubox_reset_tick();
+void ubox_reset_tick(void);
 
 // @Sprite functions
 //
@@ -486,7 +486,7 @@ void ubox_set_sprite_pat16_flip(const uint8_t *data, uint8_t pattern);
  *
  * See [ubox_read_ctl](#ubox_read_ctl) for possible control values.
  */
-uint8_t ubox_select_ctl();
+uint8_t ubox_select_ctl(void);
 
 /**
  * Read the control identified by `control` and return the status of it.
diff --git a/src/spman/spman.c b/src/spman/spman.c
index ba8a939..8bb8ba1 100644
--- a/src/spman/spman.c
+++ b/src/spman/spman.c
@@ -15,7 +15,7 @@ struct sprite_attr sp_buffer[SPMAN_MAX_SPRITES * 2];
 uint8_t sp_pat_map[SPMAN_MAX_PATTERNS];
 uint8_t sp_last_pat;
 
-void spman_init()
+void spman_init(void)
 {
     sp_last_pat = 0;
     sp_idx = 0;
@@ -49,7 +49,7 @@ uint8_t spman_alloc_pat(uint8_t type, uint8_t *data, uint8_t len, uint8_t flip)
     return sp_pat_map[type] * 4;
 }
 
-void spman_sprite_flush()
+void spman_sprite_flush(void)
 {
     sp_last_fixed_sprite = 0;
     sp_last_sprite = 0;
@@ -83,7 +83,7 @@ static const struct sprite_attr hide = { 208, 0, 0, 0 };
 
 static uint8_t *p;
 
-void spman_update()
+void spman_update(void)
 {
     p = (uint8_t*)SPMAN_SPR_ATTRS;
 
@@ -113,7 +113,7 @@ void spman_update()
     spman_sprite_flush();
 }
 
-void spman_hide_all_sprites()
+void spman_hide_all_sprites(void)
 {
     ubox_wait_vsync();
     ubox_write_vm((uint8_t *)SPMAN_SPR_ATTRS, 4, (uint8_t *)hide);
-- 
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