player animation logic

It looks nice.

README

@@ -2,6 +2,10 @@ More Than Enough Mechanics
 ==========================
 Serenity
 
+Build dependencies
+------------------
+gint toolchain, mkg3a
+
 LICENSE
 =======
 Copyright (C) 2021 KikooDX <kikoodx@paranoici.org>

include/player.h

@@ -12,6 +12,9 @@
 enum AirState { AirRising, AirBreaking, AirNeutral };
 #define AIR_BREAKING_FACTOR 3
 
+enum AnimState { AnimIdle, AnimBlink, AnimWalk, AnimAirborn, AnimJump };
+#define BLINK_DELAY 120
+
 struct Player {
 	int x;
 	int y;
@@ -30,6 +33,8 @@ struct Player {
 	struct Particle idle_anim;
 	struct Particle jump_anim;
 	struct Particle walk_anim;
+	enum AnimState anim_state;
+	int blink_timer;
 	int trail_state;
 };
 

src/player/init.c

@@ -30,6 +30,7 @@ player_init(void)
 	    .jumps_left = 0,
 	    .air_state = AirNeutral,
 	    .trail_state = 0,
+	    .blink_timer = BLINK_DELAY,
 	};
 
 	/* initialize animations */
@@ -38,6 +39,7 @@ player_init(void)
 	player.jump_anim = particle_init(&img_player_jump, 0, 0, 8, 6, 0, 0);
 	player.walk_anim = particle_init(&img_player_walk, 0, 0, 12, 6, 1, 0);
 	player.anim = player.idle_anim;
+	player.anim_state = AnimIdle;
 
 	/* find spawn position in level */
 	x = level.width;

src/player/update.c

@@ -11,6 +11,7 @@
 #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);
 
 extern struct Level level;
 
@@ -139,16 +140,50 @@ player_update(struct Player *player, struct Input input)
 	}
 
 	/* update animation */
-	if (jumped)
-		player->anim = player->jump_anim;
-
 	particle_update(&player->anim);
 
-	if (player->anim.life == 0) {
-		if (dir_x != 0)
-			player->anim = player->walk_anim;
-		else
-			player->anim = player->idle_anim;
+	/* jump anim */
+	if (jumped) {
+		player->anim = player->jump_anim;
+		player->anim_state = AnimJump;
+	}
+
+	/* update depending on animation states */
+	switch (player->anim_state) {
+	case AnimIdle:
+		if (player->blink_timer > 0)
+			player->blink_timer -= 1;
+		else if (player->blink_timer == 0)
+			player_set_anim(player, AnimBlink);
+
+		if (!on_ground)
+			player_set_anim(player, AnimAirborn);
+		else if (dir_x)
+			player_set_anim(player, AnimWalk);
+		break;
+	case AnimBlink:
+		if (!on_ground)
+			player_set_anim(player, AnimAirborn);
+		else if (dir_x)
+			player_set_anim(player, AnimWalk);
+		else if (player->anim.life == 0)
+			player_set_anim(player, AnimIdle);
+		break;
+	case AnimWalk:
+		if (!on_ground)
+			player_set_anim(player, AnimAirborn);
+		else if (!dir_x)
+			player_set_anim(player, AnimIdle);
+		break;
+	case AnimAirborn:
+		if (on_ground)
+			player_set_anim(player, AnimIdle);
+		break;
+	case AnimJump:
+		if (player->anim.life == 0)
+			player_set_anim(player, AnimIdle);
+	default:
+		break;
 	}
 
 	/* horizontal flip */
@@ -181,3 +216,30 @@ player_move(struct Player *player, int x, int y)
 		} while (player_collide_solid(player->x, player->y));
 	}
 }
+
+static void
+player_set_anim(struct Player *player, enum AnimState new_anim)
+{
+	player->anim_state = new_anim;
+	switch (new_anim) {
+	case AnimIdle:
+		player->anim = player->idle_anim;
+		player->blink_timer = BLINK_DELAY;
+		break;
+	case AnimBlink:
+		player->anim = player->blink_anim;
+		break;
+	case AnimWalk:
+		player->anim = player->walk_anim;
+		break;
+	case AnimAirborn:
+		player->anim = player->idle_anim;
+		break;
+	case AnimJump:
+		player->anim = player->jump_anim;
+		break;
+	default:
+		player->anim = player->idle_anim;
+		break;
+	}
+}