pause

Take a break and sip your tea.

CMakeLists.txt

@@ -56,6 +56,9 @@ set(SOURCES
 	src/mainmenu/init.c
 	src/mainmenu/update.c
 	src/mainmenu/draw.c
+	src/pause/init.c
+	src/pause/update.c
+	src/pause/draw.c
 )
 
 set(ASSETS

include/pause.h

@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/* Copyright (C) 2021 KikooDX */
+#pragma once
+
+#include "input.h"
+
+struct Pause {
+	int cursor;
+};
+
+struct Pause pause_init(void);
+/* Return 1 if game state should change. */
+int pause_update(struct Pause *pause, struct Input input);
+void pause_draw(struct Pause pause);

include/util.h

@@ -7,3 +7,4 @@ float square(float x);
 float isquare(float x);
 float abs(float x);
 int sign(float x);
+void darken_vram(void);

src/input/init.c

@@ -8,7 +8,8 @@ struct Input
 input_init(void)
 {
 	struct Input input = {
-	    .keycodes = {KEY_LEFT, KEY_RIGHT, KEY_UP, KEY_DOWN, KEY_SHIFT},
+	    .keycodes = {KEY_LEFT, KEY_RIGHT, KEY_UP, KEY_DOWN, KEY_SHIFT,
+	                 KEY_MENU},
 	};
 	int i = KEYS_COUNT;
 	while (i-- > 0)

src/levelselection/update.c

@@ -5,7 +5,6 @@
 #include "input.h"
 #include "levelselection.h"
 #include "util.h"
-#include <gint/keyboard.h>
 
 /* Return 1 if game state should change. */
 int

src/main.c

@@ -8,6 +8,7 @@
 #include "levelselection.h"
 #include "mainmenu.h"
 #include "particles.h"
+#include "pause.h"
 #include "player.h"
 #include "titlescreen.h"
 #include "trail.h"
@@ -53,6 +54,7 @@ main(void)
 	int i;
 	int timer;
 	int player_return_code;
+	int draw_pause;
 	int frameskip = 0;
 	/* int level_pack_beaten; */
 	enum TransitionMode transition_previous_mode;
@@ -64,6 +66,7 @@ main(void)
 	struct TitleScreen titlescreen = titlescreen_init();
 	struct LevelSelection levelselection = levelselection_init();
 	struct MainMenu mainmenu = mainmenu_init();
+	struct Pause pause = pause_init();
 	struct Transition transition =
 	    transition_init(0.0, ZX_BLACK, TransitionNone);
 	particles_init();
@@ -189,7 +192,13 @@ main(void)
 				}
 				break;
 			case GamePause:
-				game_state = Playing;
+				if (pause_update(&pause, input)) {
+					game_state = Playing;
+					/* pause draw takes is _very_ slow,
+					 * reset frameskip to compensate */
+					frameskip = 0;
+					has_ticked = 0;
+				}
 				break;
 			case PackDone:
 				game_state = LevelSelection;
@@ -200,6 +209,7 @@ main(void)
 			}
 		}
 		/* draw */
+		draw_pause = 0;
 		dclear(ZX_BLACK);
 		switch (game_state) {
 		case TitleScreen:
@@ -211,6 +221,9 @@ main(void)
 		case LevelSelection:
 			levelselection_draw(levelselection);
 			break;
+		case GamePause:
+			draw_pause = 1;
+			/* fallthrough */
 		case Playing:
 			level_draw();
 			trail_draw();
@@ -218,8 +231,10 @@ main(void)
 			trail_draw();
 			player_draw(player);
 			transition_draw(transition);
-			break;
-		case GamePause:
+			if (!draw_pause)
+				break;
+			/* GamePause */
+			pause_draw(pause);
 			break;
 		case PackDone:
 			break;

src/mainmenu/update.c

@@ -4,7 +4,6 @@
 #include "filepaths.h"
 #include "input.h"
 #include "mainmenu.h"
-#include <gint/keyboard.h>
 
 /* Return 1 if game state should change. */
 int

src/pause/draw.c

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/* Copyright (C) 2021 KikooDX */
+
+#include "pause.h"
+#include "util.h"
+#include "zxcolors.h"
+#include <gint/display.h>
+
+void
+pause_draw(struct Pause pause)
+{
+	darken_vram();
+	dprint_opt(DWIDTH / 2, DHEIGHT * 1 / 2, ZX_WHITE, ZX_BLACK,
+	           DTEXT_CENTER, DTEXT_MIDDLE, "GAME PAUSED");
+}

src/pause/init.c

@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/* Copyright (C) 2021 KikooDX */
+
+#include "pause.h"
+
+struct Pause
+pause_init(void)
+{
+	return (struct Pause){.cursor = 0};
+}

src/pause/update.c

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/* Copyright (C) 2021 KikooDX */
+
+#include "input.h"
+#include "pause.h"
+
+/* Return 1 if game state should change. */
+int
+pause_update(struct Pause *pause, struct Input input)
+{
+	if (input.keystates[K_START] == KS_PRESS) {
+		return 1;
+	}
+
+	return 0;
+}

src/player/update.c

@@ -8,7 +8,6 @@
 #include "player.h"
 #include "tiles.h"
 #include "util.h"
-#include <gint/keyboard.h>
 
 static void player_move(struct Player *player, int x, int y);
 static void player_set_anim(struct Player *player, enum AnimState new_anim);

src/titlescreen/update.c

@@ -3,7 +3,6 @@
 
 #include "input.h"
 #include "titlescreen.h"
-#include <gint/keyboard.h>
 
 /* Return 1 if game state should change. */
 int

src/util.c

@@ -2,6 +2,7 @@
 /* Copyright (C) 2021 KikooDX */
 
 #include "util.h"
+#include <gint/display.h>
 
 float
 square(float x)
@@ -26,3 +27,12 @@ sign(float x)
 {
 	return 1 * (x > 0) - 1 * (x < 0);
 }
+
+/* courtesy of Lephenixnoir */
+void
+darken_vram(void)
+{
+	int i;
+	for (i = 0; i < DWIDTH * DHEIGHT; i++)
+		gint_vram[i] = (gint_vram[i] & 0xf7de) >> 1;
+}