Tweak player's movement and jump code

player.c

@@ -11,26 +11,14 @@
 #define SPRITE_WIDTH 100
 #define SPRITE_HEIGHT 64
 
-void  print_state          (Player *player) {
-	switch(player->current_state) {
-		case PLAYER_STATE_IDLE:
-			printf("IDLE\n");
-			break;
-		case PLAYER_STATE_WALK:
-			printf("WALK\n");
-			break;
-		case PLAYER_STATE_DASH:
-			printf("DASH\n");
-			break;
-		case PLAYER_STATE_JUMP:
-			printf("JUMP\n");
-			break;
-		case PLAYER_STATE_FALL:
-			printf("FALL\n");
-			break;
-	}
-}
 void    get_player_controls(Player *player);
+void    set_x_movement     (Player *player);
+void    player_move        (Player *player);
+void    player_dash        (Player *player);
+void    player_jump        (Player *player);
+void    player_fall        (Player *player);
+bool    player_on_ground   (Player *player);
+int32_t player_gravity     (Player *player);
 State   *update_state      (Player *player, uint32_t state);
 State   *idle_state        (StateMachine *sm, Player *player);
 State   *walk_state        (StateMachine *sm, Player *player);
@@ -54,7 +42,7 @@ void player_init(Player *player, SDL_Renderer *renderer, SDL_Rect position) {
 	player->animations[PLAYER_STATE_JUMP] = 
 			ap_init(renderer, "knight_player/Jump_KG_2.png",    100, SPRITE_WIDTH, SPRITE_HEIGHT, false);
 	player->animations[PLAYER_STATE_FALL] = 
-			ap_init(renderer, "knight_player/Fall_KG_2.png",     80, SPRITE_WIDTH, SPRITE_HEIGHT, false);
+			ap_init(renderer, "knight_player/Fall_KG_2.png",     50, SPRITE_WIDTH, SPRITE_HEIGHT, false);
 
 	player->states[PLAYER_STATE_IDLE] = (State){ .state_func = (StateFunc *)idle_state };
 	player->states[PLAYER_STATE_WALK] = (State){ .state_func = (StateFunc *)walk_state };
@@ -69,24 +57,8 @@ void player_init(Player *player, SDL_Renderer *renderer, SDL_Rect position) {
 
 void player_update(Player *player, uint32_t ticks) {
 	get_player_controls(player);
-
-	if (player->controls.walk_left) {
-		player->movement.x  = PLAYER_DIRECTION_LEFT * player->velocity;
-		player->x_direction = PLAYER_DIRECTION_LEFT;
-	} else if (player->controls.walk_right) {
-		player->movement.x  = PLAYER_DIRECTION_RIGHT * player->velocity;
-		player->x_direction = PLAYER_DIRECTION_RIGHT;
-	} else if (!(player->controls.walk_left) && !(player->controls.walk_right)) {
-		player->movement.x = 0;
-	}
-
 	sm_run(&(player->state_machine), (void *)player);
-
-	player->position.x += player->movement.x;
-	player->position.y += player->movement.y;
-	if (player->position.y > player->base_y) {
-		player->position.y = player->base_y;
-	}
+	player_move(player);
 	ap_update(&(player->animations[player->current_state]), ticks);
 }
 
@@ -109,6 +81,50 @@ void get_player_controls(Player *player) {
 	player->controls.dash          = player->controls.lctrl_last && !(player->controls.lctrl_pressed);
 }
 
+void set_x_movement(Player *player) {
+	if (player->controls.walk_left) {
+		player->movement.x  = PLAYER_DIRECTION_LEFT * player->velocity;
+		player->x_direction = PLAYER_DIRECTION_LEFT;
+	} else if (player->controls.walk_right) {
+		player->movement.x  = PLAYER_DIRECTION_RIGHT * player->velocity;
+		player->x_direction = PLAYER_DIRECTION_RIGHT;
+	} else if (!(player->controls.walk_left) && !(player->controls.walk_right)) {
+		player->movement.x = 0;
+	}
+}
+
+void player_move(Player *player) {
+	player->position.x += player->movement.x;
+	player->position.y += player->movement.y;
+	if (player->position.y > player->base_y) {
+		player->position.y = player->base_y;
+	}
+}
+
+void player_dash(Player *player) {
+	player->movement.x = player->x_direction * player->velocity * 2;
+}
+
+void player_jump(Player *player) {
+	player->movement.y = player->velocity * 7 * -1;
+}
+
+void player_fall(Player *player) {
+	player->movement.y = player->velocity * 6;
+}
+
+bool player_on_ground(Player *player) {
+	return player->position.y == player->base_y;
+}
+
+int32_t player_gravity(Player *player) {
+	return player->velocity * 0.5;
+}
+
+bool player_falling(Player *player) {
+	return player->movement.y > 0;
+}
+
 State *update_state(Player *player, uint32_t state) {
 	if (state >= COUNT_PLAYER_STATES) {
 		return &(player->states[player->current_state]);
@@ -122,7 +138,7 @@ State *idle_state(StateMachine *sm, Player *player) {
 	uint32_t state = PLAYER_STATE_IDLE;
 
 	if (player->controls.jump) {
-		player->movement.y = player->velocity * 6 * -1;
+		player_jump(player);
 		state = PLAYER_STATE_JUMP;
 	} else if (player->controls.walk_left) {
 		state = PLAYER_STATE_WALK;
@@ -130,6 +146,8 @@ State *idle_state(StateMachine *sm, Player *player) {
 		state = PLAYER_STATE_WALK;
 	}
 
+	set_x_movement(player);
+
 	return update_state(player, state);
 }
 
@@ -137,11 +155,11 @@ State *walk_state(StateMachine *sm, Player *player) {
 	uint32_t state         = PLAYER_STATE_WALK;
 
 	if (player->controls.jump) {
-		player->movement.y = player->velocity * 6 * -1;
+		player_jump(player);
 		state = PLAYER_STATE_JUMP;
 	} else if (player->controls.dash) {
-		player->controls.dash_in_air = false;
-		player->movement.x           = player->x_direction * player->velocity * 2;
+		player_dash(player);
+		player->controls.jump_dash = false;
 		state                      = PLAYER_STATE_DASH;
 	}
 
@@ -149,6 +167,8 @@ State *walk_state(StateMachine *sm, Player *player) {
 		state = PLAYER_STATE_IDLE;
 	}
 
+	set_x_movement(player);
+
 	return update_state(player, state);
 }
 
@@ -156,11 +176,11 @@ State *dash_state(StateMachine *sm, Player *player) {
 	bool reset     = false;
 	uint32_t state = PLAYER_STATE_DASH;
 
-	player->movement.x += player->x_direction * 20;
+	player->movement.x += player->x_direction * (int32_t)player->velocity * 0.5;
 
 	if (player->animations[PLAYER_STATE_DASH].finished) {
-		if (player->controls.dash_in_air) {
-			player->movement.y = player->velocity * 6;
+		if (player->controls.jump_dash) {
+			player_fall(player);
 			state = PLAYER_STATE_FALL;
 		} else {
 			player->movement.x = 0;
@@ -181,16 +201,16 @@ State *jump_state(StateMachine *sm, Player *player) {
 	bool reset     = false;
 	uint32_t state = PLAYER_STATE_JUMP;
 
-	player->movement.y += player->velocity * 0.5;
+	player->movement.y += player_gravity(player);
 
 	if (player->controls.dash) {
-		player->controls.dash_in_air = true;
-		player->movement.x           = player->x_direction * player->velocity * 2;
-		player->movement.y           = player->velocity * 0.5;
+		player_dash(player);
+		player->controls.jump_dash = true;
+		player->movement.y         = player_gravity(player);
 		reset                      = true;
 		state                      = PLAYER_STATE_DASH;
 	} else if (player->animations[PLAYER_STATE_JUMP].finished) {
-		player->movement.y = player->velocity * 6;
+		player_fall(player);
 		reset = true;
 		state = PLAYER_STATE_FALL;
 	}
@@ -199,6 +219,8 @@ State *jump_state(StateMachine *sm, Player *player) {
 		ap_reset(&(player->animations[PLAYER_STATE_JUMP]));
 	}
 
+	set_x_movement(player);
+
 	return update_state(player, state);
 }
 
@@ -206,7 +228,7 @@ State *fall_state(StateMachine *sm, Player *player) {
 	bool reset     = false;
 	uint32_t state = PLAYER_STATE_FALL;
 
-	if (player->animations[PLAYER_STATE_FALL].finished) {
+	if (player->animations[PLAYER_STATE_FALL].finished && player_on_ground(player)) {
 		player->movement.y = 0;
 		reset              = true;
 		state              = PLAYER_STATE_IDLE;
@@ -216,5 +238,7 @@ State *fall_state(StateMachine *sm, Player *player) {
 		ap_reset(&(player->animations[PLAYER_STATE_FALL]));
 	}
 
+	set_x_movement(player);
+
 	return update_state(player, state);
 }

player.h

@@ -35,7 +35,7 @@ struct player_control {
 	bool lctrl_last;
 	bool lctrl_pressed;
 	bool dash;
-	bool dash_in_air;
+	bool jump_dash;
 };
 
 typedef struct movement Movement;