Fixes: #29 and #17 New skill: bash

Adds the bash skill and the stunned state.
Stunned enemies have disadvantage while stunned.

src/defines.h

@@ -68,6 +68,9 @@
 #define C_YELLOW (SDL_Color)	{	255, 255,   0, 255 }
 #define C_BLACK (SDL_Color)		{	  0,   0,   0, 255 }
 
+#define max(a, b) (a > b ? a : b)
+#define min(a, b) (a < b ? a : b)
+
 typedef enum Direction_t {
 	UP, DOWN, LEFT, RIGHT
 } Direction;

src/map_lua.c

@@ -231,7 +231,7 @@ lua_checkstats(lua_State *L, int index)
 	// Reset the stack
 	lua_pop(L, 6);
 
-	Stats stats = { hp, hp, dmg, atk, def, speed, 1 };
+	Stats stats = { hp, hp, dmg, atk, def, speed, 1, false, false };
 	return stats;
 }
 

src/monster.c

@@ -51,6 +51,9 @@ monster_set_sprite_clip_for_current_state(Monster *m)
 		case SLEEPING:
 			m->stateIndicator.sprite->clip = CLIP16(16 * 10, 16 * 4);
 			break;
+		case STUNNED:
+			m->stateIndicator.sprite->clip = CLIP16(16 * 13, 16 * 3);
+			break;
 		case SCANNING:
 			m->stateIndicator.sprite->clip = CLIP16(16 * 13, 16 * 4);
 		default:
@@ -64,6 +67,7 @@ monster_state_change(Monster *m, StateType newState)
 	if (m->state.current == newState)
 		return;
 
+	m->state.last = m->state.current;
 	m->state.current = newState;
 	m->state.stepsSinceChange = 0;
 
@@ -72,12 +76,19 @@ monster_state_change(Monster *m, StateType newState)
 	else
 		m->stateIndicator.displayCount = 5;
 
+	if (newState == STUNNED)
+		m->stats.disadvantage = true;
+	else if (m->state.last == STUNNED)
+		m->stats.disadvantage = false;
+
 	monster_set_sprite_clip_for_current_state(m);
 }
 
 static void
 monster_behaviour_check_post_hit(Monster *m)
 {
+	if (m->state.current == STUNNED)
+		return;
 	switch (m->behaviour) {
 		case PACIFIST:
 		case COWARD:
@@ -156,7 +167,9 @@ monster_create(void)
 		0,  // atk
 		0,  // def
 		1,  // speed
-		1   // lvl
+		1,   // lvl
+		false, // advantage
+		false // disadvantage
 	};
 
 	m->label = NULL;
@@ -350,6 +363,16 @@ monster_move(Monster *m, RoomMatrix *rm)
 {
 	Position monsterRoomPos;
 
+	if (m->state.current == STUNNED) {
+		if (m->state.stepsSinceChange < 3) {
+			m->state.stepsSinceChange += 1;
+			return true;
+		} else {
+			monster_state_change(m, m->state.last);
+			monster_behaviour_check_post_hit(m);
+		}
+	}
+
 	monster_behaviour_check(m, rm);
 
 	monsterRoomPos = position_to_matrix_coords(&m->sprite->pos);
@@ -525,6 +548,12 @@ monster_set_behaviour(Monster *m, MonsterBehaviour behaviour)
 	monster_set_sprite_clip_for_current_state(m);
 }
 
+void
+monster_set_stunned(Monster *m)
+{
+	monster_state_change(m, STUNNED);
+}
+
 void
 monster_destroy(Monster *m)
 {

src/monster.h

@@ -43,11 +43,13 @@ typedef enum {
 	SCARED,
 	STATIONARY,
 	SLEEPING,
-	SCANNING
+	SCANNING,
+	STUNNED
 } StateType;
 
-typedef struct {
+typedef struct State {
 	StateType current;
+	StateType last;
 	unsigned int stepsSinceChange;
 } State;
 
@@ -94,6 +96,9 @@ monster_drop_loot(Monster*, Map*, Player*);
 void
 monster_set_behaviour(Monster *, MonsterBehaviour behaviour);
 
+void
+monster_set_stunned(Monster *m);
+
 void
 monster_destroy(Monster*);
 

src/player.c

@@ -35,11 +35,11 @@
 #include "actiontextbuilder.h"
 #include "animation.h"
 
-#define ENGINEER_STATS	{ 12, 12, 5, 7, 2, 2, 1 }
-#define MAGE_STATS	{ 12, 12, 5, 7, 1, 2, 1 }
-#define PALADIN_STATS	{ 12, 12, 8, 9, 3, 1, 1 }
-#define ROGUE_STATS	{ 12, 12, 5, 7, 1, 2, 1 }
-#define WARRIOR_STATS	{ 12, 12, 8, 9, 3, 1, 1 }
+#define ENGINEER_STATS	{ 12, 12, 5, 7, 2, 2, 1, false, false }
+#define MAGE_STATS	{ 12, 12, 5, 7, 1, 2, 1, false, false }
+#define PALADIN_STATS	{ 12, 12, 8, 9, 3, 1, 1, false, false }
+#define ROGUE_STATS	{ 12, 12, 5, 7, 1, 2, 1, false, false }
+#define WARRIOR_STATS	{ 12, 12, 8, 9, 3, 1, 1, false, false }
 
 static void
 player_levelup(Player *player)
@@ -428,8 +428,9 @@ player_create(class_t class, SDL_Renderer *renderer)
 			m_strcpy(asset, 100, "Commissions/Warrior.png");
 			player->stats = (Stats) WARRIOR_STATS;
 			player->skills[0] = skill_create(FLURRY);
-			player->skills[1] = skill_create(CHARGE);
-			player->skills[2] = skill_create(DAGGER_THROW);
+			player->skills[1] = skill_create(BASH);
+			player->skills[2] = skill_create(CHARGE);
+			player->skills[3] = skill_create(DAGGER_THROW);
 			break;
 	}
 

src/roommatrix.c

@@ -25,6 +25,7 @@
 #include "player.h"
 #include "item.h"
 #include "update_data.h"
+#include "defines.h"
 
 static void
 roommatrix_reset(RoomMatrix *m)
@@ -152,25 +153,6 @@ void roommatrix_populate_from_map(RoomMatrix *rm, Map *m)
 	}
 }
 
-// TODO(Linus): These should probably be macros
-#undef min
-#ifndef min
-static int
-min(int a, int b)
-{
-	return a > b ? b : a;
-}
-#endif // min
-
-#undef max
-#ifndef max
-static int
-max(int a, int b)
-{
-	return a > b ? a : b;
-}
-#endif // max
-
 void
 roommatrix_add_lightsource(RoomMatrix *matrix, Position *pos)
 {

src/skill.c

@@ -177,6 +177,67 @@ create_throw_dagger(void)
 	return skill;
 }
 
+static bool
+skill_bash(Skill *skill, SkillData *data)
+{
+	UNUSED (skill);
+
+	Position playerPos = position_to_matrix_coords(&data->player->sprite->pos);
+	Position targetPos = playerPos;
+	targetPos.x += (int) data->direction.x;
+	targetPos.y += (int) data->direction.y;
+
+	player_turn(data->player, &data->direction);
+
+	if (!position_in_roommatrix(&targetPos)) {
+		return false;
+	}
+
+	animation_run(data->player->swordAnimation);
+	Monster *monster = data->matrix->spaces[targetPos.x][targetPos.y].monster;
+	mixer_play_effect(SWING1);
+	if (monster) {
+		gui_log("You bash %s with your shield", monster->lclabel);
+		unsigned int dmg = stats_fight(&data->player->stats, &monster->stats);
+		if (dmg > 0) {
+			gui_log("You hit for %u damage", dmg);
+			if (monster->stats.hp > 0) {
+				gui_log("%s seems dazed and confused", monster->label);
+				monster_set_stunned(monster);
+			}
+			mixer_play_effect(SWORD_HIT);
+			data->player->stat_data.hits += 1;
+		} else {
+			gui_log("You missed %s", monster->lclabel);
+		}
+		monster_hit(monster, dmg);
+	} else {
+		gui_log("You bash your shield at nothing");
+	}
+	player_monster_kill_check(data->player, monster);
+
+	return true;
+}
+
+static Skill *
+create_bash(void)
+{
+	Texture *t = texturecache_add("Extras/Skills.png");
+	Sprite *s = sprite_create();
+	sprite_set_texture(s, t, 0);
+	s->dim = GAME_DIMENSION;
+	s->clip = CLIP32(96, 0);
+	s->fixed = true;
+	Skill *skill = create_default("Bash", s);
+	skill->levelcap = 3;
+	skill->instantUse = false;
+	skill->resetTime = 2;
+	skill->available = NULL;
+	skill->use = skill_bash;
+	skill->actionRequired = true;
+	return skill;
+}
+
 static bool
 skill_sip_health_available(Player *player)
 {
@@ -316,6 +377,8 @@ skill_create(enum SkillType t)
 			return create_charge();
 		case DAGGER_THROW:
 			return create_throw_dagger();
+		case BASH:
+			return create_bash();
 		default:
 			fatal("Unknown SkillType %u", (unsigned int) t);
 			return NULL;

src/skill.h

@@ -29,6 +29,7 @@ struct Player_t;
 
 enum SkillType {
 	FLURRY,
+	BASH,
 	CHARGE,
 	DAGGER_THROW,
 	SIP_HEALTH

src/stats.c

@@ -25,6 +25,7 @@
 #include "stats.h"
 #include "random.h"
 #include "util.h"
+#include "defines.h"
 
 unsigned int
 stats_fight(Stats *attacker, Stats *defender)
@@ -32,11 +33,23 @@ stats_fight(Stats *attacker, Stats *defender)
 	int atkRoll, defRoll, dmgRoll;
 	bool critical = false;
 
-	atkRoll = get_random(19) + 1;
+	if (attacker->advantage)
+		atkRoll = max(get_random(19), get_random(19)) + 1;
+	else if (attacker->disadvantage)
+		atkRoll = min(get_random(19), get_random(19)) + 1;
+	else
+		atkRoll = get_random(19) + 1;
+
 	if (atkRoll == 20)
 		critical = true;
 	atkRoll += attacker->atk;
-	defRoll = (get_random(19) + 1) + defender->def;
+
+	if (defender->advantage)
+		defRoll = max(get_random(19), get_random(19)) + 1 + defender->def;
+	else if (defender->disadvantage)
+		defRoll = min(get_random(19), get_random(19)) + 1 + defender->def;
+	else
+		defRoll = get_random(19) + 1 + defender->def;
 	dmgRoll = 0;
 
 	if (atkRoll >= defRoll) {

src/stats.h

@@ -27,6 +27,8 @@ typedef struct Stats_t {
 	int def;			/* Defence rating */
 	unsigned int speed;	/* Speed */
 	unsigned int lvl;	/* Level */
+	bool advantage;
+	bool disadvantage;
 } Stats;
 
 unsigned int