enemy and ai, bullets and gameplay

ai needs finetuning

15 files changed, 230 insertions, 33 deletions

diff --git a/src/demo.c b/src/demo.c
index aae1729..8e7af93 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -65,14 +65,16 @@ void hh_demo_loop(unsigned long frame) {
 		hh_gameplay(&hh_game, &hh_game_states);
 		break;
 	case hh_e_state_game_over:
-		// todo:
+		// TODO:
 		// function: show game over screen
 		// function: after time goto high score
+			hh_game_states = hh_e_state_high_score;
 		break;
 	case hh_e_state_high_score:
 		// todo:
 		// fucntion: show all previously scored points
 		// function: button pressed goto starting screen
+		hh_game_states = hh_e_state_starting_screen;
 		break;
 	default:
 			hh_game_states = hh_e_state_starting_screen;
diff --git a/src/engine/bullet.c b/src/engine/bullet.c
index 55b20cc..eb9a8bb 100644
--- a/src/engine/bullet.c
+++ b/src/engine/bullet.c
@@ -42,12 +42,47 @@ bool rising_edge(bool signal, bool* prev) {
     return edge;
 }
 bool prev_signal = false;
+void hh_handle_bullet_direction(hh_entity* bullet){
+	bullet->vel = (vec2){0,0};
+	if (g_hh_controller_p1.dpad_left) {
+		if (g_hh_controller_p1.dpad_up) {
+			bullet->vel.x = -1;
+			bullet->vel.y = -1;
+		} else if (g_hh_controller_p1.dpad_down) {
+			bullet->vel.x = -1;
+			bullet->vel.y = 1;
+		} else {
+			bullet->vel.x = -1;
+		}
+	}else if (g_hh_controller_p1.dpad_right) {
+		if (g_hh_controller_p1.dpad_up) {
+			bullet->vel.x = 1;
+			bullet->vel.y = -1;
+		} else if (g_hh_controller_p1.dpad_down) {
+			bullet->vel.x = 1;
+			bullet->vel.y = 1;
+		} else {
+			bullet->vel.x = 1;
+		}
+	} else if (g_hh_controller_p1.dpad_up){
+		bullet->vel.y = -1;
+	} else if (g_hh_controller_p1.dpad_down){
+		bullet->vel.y = 1;
+	}
+	else{
+		bullet->vel.x = 1;
+	}
+	bullet->render.fam.horizontal_flip = (bullet->vel.x < 0);
+	bullet->render.fam.vertical_flip = (bullet->vel.y != 0);
+	
+}
 void hh_shoot_bullet(vec2 player, hh_entity* bullet){
 	vec2 temp;
 	if(rising_edge(g_hh_controller_p1.button_secondary,&prev_signal) && bullet->is_grounded){
 			bullet->is_grounded=false;
 			bullet->pos = player;
 			current_bullet = (current_bullet + 1) % bullets_size;
+			hh_handle_bullet_direction(bullet);
 	}
 
 }
@@ -55,11 +90,10 @@ void hh_shoot_bullet(vec2 player, hh_entity* bullet){
 void hh_update_bullet(hh_entity* bullet){
 	if(hh_background_collision_bulllet(*bullet)){
 		hh_bullet_death(bullet);
-
-		// printf("x %d y %d\n",(bullet->pos.x-cam_pos.x),(bullet->pos.y-cam_pos.y));
 	}
 	else{
-		bullet->pos.x += bullet->speed;	
+		bullet->pos.x = bullet->pos.x + bullet->vel.x * bullet->speed;	
+		bullet->pos.y = bullet->pos.y  + bullet->vel.y * bullet->speed;	
 	}
 
 }
diff --git a/src/engine/enemy.c b/src/engine/enemy.c
index 186cfa0..4ed48a2 100644
--- a/src/engine/enemy.c
+++ b/src/engine/enemy.c
@@ -1,14 +1,9 @@
 #include "engine/enemy.h"
 
-void hh_update_enemy(hh_entity* enemy, vec_cor cam_pos){
-	//Bjorn functions
 
-
-}
-
-void hh_multiple_enemies( vec_cor cam_pos, hh_entity* enemies, int total_enemies){
+void hh_multiple_enemies(hh_entity* enemies, hh_entity player, vec_cor cam_pos, int total_enemies){
 	for(int i=0; i < total_enemies;i++){
-			hh_update_enemy(&enemies[i] , cam_pos);
+			hh_update_enemy(&enemies[i] , player, cam_pos);
 		}
 
 }
@@ -22,6 +17,7 @@ void hh_enemy_death_check(hh_entity* enemy){
 		enemy->hp--;
 	}
 }
+
 void hh_solve_hitted_enemies(hh_entity* enemies, int total_enemies){
 	for(int i = 0; i < total_enemies; i++){
 		if(enemies[i].is_hit){
diff --git a/src/engine/enemy.h b/src/engine/enemy.h
index 80498f5..c8a3f20 100644
--- a/src/engine/enemy.h
+++ b/src/engine/enemy.h
@@ -1,14 +1,13 @@
 #pragma once
 #include "player_controller.h"
 #include "engine/sprite_controller.h"
+#include "engine/enemy_ai.h"
 #include "types.h"
 #include "input.h"
 
-/** @brief updates a single enemy locations TODO: Bjorn sets functions in here*/
-void hh_update_enemy(hh_entity* , vec_cor );
 
 /** @brief calculates all the given enemies positions*/
-void hh_multiple_enemies( vec_cor cam_pos, hh_entity* enemies, int total_enemies);
+void hh_multiple_enemies(hh_entity* enemies, hh_entity player, vec_cor cam_pos, int total_enemies);
 
 /** @brief checks if the enemy has zero hp else it takes hp from the enemy */
 void hh_enemy_death_check(hh_entity* enemy);
diff --git a/src/engine/enemy_ai.c b/src/engine/enemy_ai.c
new file mode 100644
index 0000000..81d04d9
--- /dev/null
+++ b/src/engine/enemy_ai.c
@@ -0,0 +1,99 @@
+#include "engine/enemy_ai.h"
+
+int8_t hh_get_direction(int32_t player_x, int32_t enemy_x){
+	int movement_direction = player_x - enemy_x; // = player.pos.x - player.prev_pos.x;
+	if (movement_direction > 0) {
+		return 1; // move in positive direction
+	} else if (movement_direction < 0) {
+		return -1; // move in negative direction
+	} else {
+		return 0; // don't move
+	}
+}
+void hh_update_enemy_movement(hh_entity* enemy){
+	hh_entity enemy_new = {0};
+	enemy_new = *enemy;
+	enemy_new.vel = (vec2){
+		.x = enemy->vel.x,
+		.y = enemy->vel.y,
+	};
+	
+	enemy_new.pos = (vec2){
+		.x = enemy->pos.x + enemy_new.vel.x,
+		.y = enemy->pos.y + enemy_new.vel.y,
+	};
+
+
+	*enemy =  hh_background_collision ( *enemy, enemy_new);
+}
+void hh_slime_ai(hh_entity* enemy, hh_entity player){
+	int8_t direction = hh_get_direction(player.pos.x, enemy->pos.x);
+	if((player.pos.x - enemy->pos.x) >= -hunt_player && (player.pos.x - enemy->pos.x) <= hunt_player){
+   	hh_movement_entity(enemy, direction);
+	}
+	hh_gravity_entity(enemy);
+	hh_update_enemy_movement(enemy);
+
+}
+
+void hh_jump_slime_ai(hh_entity* enemy, hh_entity player){
+	int8_t direction = hh_get_direction(player.pos.x, enemy->pos.x);
+	hh_gravity_entity(enemy);
+	if((player.pos.x - enemy->pos.x) >= -hunt_player && (player.pos.x - enemy->pos.x) <= hunt_player){
+   	hh_movement_entity(enemy, direction);
+		// TODO: fix this if statement and make it cleaner. this makes the enemy jump when the player mets the condition
+		if((player.pos.y - enemy->pos.y) < -16 && (player.pos.y - enemy->pos.y) >= -100 && (player.pos.x - enemy->pos.x) >= -10 && (player.pos.x - enemy->pos.x) <= 10){
+			hh_jump_entity(enemy);
+		}
+	}
+
+	hh_update_enemy_movement(enemy);
+
+}
+#define terror_owl_attack_timer 100
+#define terror_owl_follow_player_delay 5 
+#define terror_owl_attack_player_delay 12
+#define terror_owl_dive_speed 3
+#define delay_frames 2
+#define terror_owl_minimal_distance_from_player 100
+void hh_terror_owl_ai(hh_entity* enemy, hh_entity player){
+	static int count=0;
+	static int last_y_location=0;
+    
+	if (count < terror_owl_attack_timer) {
+		// Move towards player position smoothly
+		int delta_x = (-50 + player.pos.x - enemy->pos.x) / terror_owl_follow_player_delay;
+		enemy->pos.x += delta_x;
+		enemy->pos.y = player.pos.y - terror_owl_minimal_distance_from_player;
+
+		count++;
+		last_y_location=player.pos.y;
+	} else {
+		if(enemy->pos.y <= last_y_location){
+			int delta_x = (player.pos.x - enemy->pos.x) / terror_owl_attack_player_delay;
+			enemy->pos.x += delta_x;
+			enemy->pos.y += terror_owl_dive_speed;
+		}
+		else{
+			count = 0;
+		}
+	}
+
+}
+void hh_update_enemy(hh_entity* enemy ,  hh_entity player, vec_cor cam_pos){
+	// static hh_e_entity_type type;
+	switch (enemy->object_type)
+	{
+	case slime:
+		hh_slime_ai(enemy,player);
+		break;
+	case jumping_slime:
+		hh_jump_slime_ai(enemy,player);
+		break;
+	case terror_owl:
+		hh_terror_owl_ai(enemy,player);
+		break;
+	default:
+		break;
+	}
+}
diff --git a/src/engine/enemy_ai.h b/src/engine/enemy_ai.h
new file mode 100644
index 0000000..d68f50f
--- /dev/null
+++ b/src/engine/enemy_ai.h
@@ -0,0 +1,10 @@
+#pragma once
+#include "player_controller.h"
+#include "engine/sprite_controller.h"
+#include "types.h"
+#include "input.h"
+#include <math.h>
+
+
+#define hunt_player 100
+void hh_update_enemy(hh_entity* enemy ,  hh_entity player, vec_cor cam_pos);
diff --git a/src/engine/entity.c b/src/engine/entity.c
index 1cb88be..eba6481 100644
--- a/src/engine/entity.c
+++ b/src/engine/entity.c
@@ -43,6 +43,7 @@ void hh_solve_collision(vec2 pos_environment, hh_entity* entity){
 	// 	entity->vel.x = 0;
 	// } 
 }
+
 hh_entity hh_background_collision (hh_entity temp_old_entity,hh_entity temp_new_entity){
 
 		temp_new_entity.is_grounded = false;
@@ -119,6 +120,7 @@ bool hh_background_collision_bulllet (hh_entity temp_old_entity){
 	// temp_old_entity.vel = temp_new_entity.vel;
 	return false;
 }
+
 hh_entity hh_enemy_collision(hh_entity temp_player, hh_entity temp_enemy){
 	
 	bool collide = hh_distance_circles( temp_player.pos,  temp_enemy.pos, temp_player.radius, temp_enemy.radius);
@@ -138,7 +140,7 @@ hh_entity hh_enemy_collision(hh_entity temp_player, hh_entity temp_enemy){
 			temp_player.vel.x = 8;
 		}
 		// ghost mode / invulnerable or other things on hit
-		//	temp_player.hp--;
+		temp_player.hp--;
 			
 	} else {
 		temp_player.is_hit = false;
@@ -170,14 +172,35 @@ void hh_jump_entity(hh_entity* object_1){
 	}
 }
 void hh_gravity_entity(hh_entity* object_1){
-	if (object_1->is_grounded == false && object_1->vel.y < 6) {
+	if (object_1->is_grounded == false) {
 		object_1->vel.y += 1; //gravity
 	}
 }
-void hh_hit_entity(hh_entity* object_1, int8_t* hit_timer, int8_t* direction){
+
+void hh_movement_entity(hh_entity* object_1, int8_t* direction){
+	if(direction != 0){
+		if(object_1->vel.x > -1 * object_1->speed && object_1->vel.x < object_1->speed) {
+			object_1->vel.x = object_1->vel.x + direction;
+		} else {
+			if (object_1->vel.x > 0) {
+				object_1->vel.x--;
+			} else if(object_1->vel.x < 0) {
+				object_1->vel.x++; 
+			}
+		}
+	} else {
+		if (object_1->vel.x > 0) {
+			object_1->vel.x--;
+		} else if(object_1->vel.x < 0) {
+		object_1->vel.x++; 
+		}
+	}
+	
+}
+void hh_player_move_hit(hh_entity* object_1, int8_t* hit_timer, int8_t* direction){
 	if(object_1->is_hit == true){
 		hit_timer = 9;
-		object_1->is_hit = false;	
+		//object_1->is_hit = false;
 	} 
 	if(hit_timer > -10){
 			hit_timer--;
diff --git a/src/engine/entity.h b/src/engine/entity.h
index fde9341..fb1c905 100644
--- a/src/engine/entity.h
+++ b/src/engine/entity.h
@@ -51,9 +51,12 @@ void hh_jump_entity(hh_entity* );
 /** @brief looks if the player is grounded and if not it sets the position down */
 void hh_gravity_entity(hh_entity* );
 /** @brief if object is hit bounches in specific direction and moves the object */
-void hh_hit_entity(hh_entity* object_1, int8_t* hit_timer, int8_t* direction);
+void hh_player_move_hit(hh_entity* object_1, int8_t* hit_timer, int8_t* direction);
+
+void hh_movement_entity(hh_entity* object_1, int8_t* direction);
 
 /** @brief specific bullet background collisions detection */
 bool hh_background_collision_bulllet (hh_entity temp_old_entity);
 /** @brief checks any entity has a hit on each othe*/
 void hh_check_all_collisions(hh_entity* player, hh_entity* enemies, int total_enemies, hh_entity* bullets, int total_bullets, vec_cor cam_pos);
+
diff --git a/src/engine/level_const.c b/src/engine/level_const.c
index 896d0e0..a6a7c84 100644
--- a/src/engine/level_const.c
+++ b/src/engine/level_const.c
@@ -4,7 +4,7 @@
 
 hh_g_all_levels hh_init_game_levels(){
 	hh_g_all_levels levels;
-	levels.current_level=0;
+	levels.current_level=1;
 	
 	levels.level[0].size.x=40;
 	levels.level[0].size.y=100;
diff --git a/src/engine/player_controller.c b/src/engine/player_controller.c
index 83c5966..5b0da99 100644
--- a/src/engine/player_controller.c
+++ b/src/engine/player_controller.c
@@ -16,7 +16,7 @@ void hh_player_actions(hh_entity* player){
 	int8_t direction_x = (-1 * g_hh_controller_p1.dpad_left) + (1 * g_hh_controller_p1.dpad_right);
 	int8_t direction_y = (-1 * g_hh_controller_p1.dpad_up) + (1 * g_hh_controller_p1.dpad_down);
 
-	hh_hit_entity(player,hit_timer,direction_x);
+	hh_player_move_hit(player,hit_timer,direction_x);
 	hh_gravity_entity(player);
 	if(g_hh_controller_p1.button_primary){
 		hh_jump_entity(player);
diff --git a/src/engine/types.h b/src/engine/types.h
index 00b381b..8040e46 100644
--- a/src/engine/types.h
+++ b/src/engine/types.h
@@ -4,6 +4,9 @@
 
 typedef uint8_t hh_ppu_fg_idx;
 // typedef uint16_t hh_bg_idx;
+typedef enum {
+	slime, jumping_slime, terror_owl,
+}hh_e_all_objects_game_type;
 
 typedef enum {
 	fire, ice, poison
@@ -31,6 +34,7 @@ typedef struct {
 	vec2 pos, vel, size;
 	bool is_grounded;
 	bool is_hit;
+	hh_e_all_objects_game_type object_type;
 	uint8_t radius;
 	int8_t hp;
 	int8_t speed;
diff --git a/src/game_loop/gameplay.c b/src/game_loop/gameplay.c
index da029f3..b7da04f 100644
--- a/src/game_loop/gameplay.c
+++ b/src/game_loop/gameplay.c
@@ -1,6 +1,5 @@
 #include "gameplay.h"
 #include "engine/entity.h"
-// player struct
 
 
 void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
@@ -11,7 +10,7 @@ void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 		.speed = 6,
 		.is_grounded = false,
 		.is_hit = false,
-		.radius = 8,
+		.radius = 16,
 		.pos = (vec2){32,32},
 		.size = (vec2){32,32},
 		.vel = (vec2){0,0},
@@ -28,12 +27,13 @@ void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 	};
 	// enemy gets replaced here is just for reference
 	static hh_entity enemy={
+		.object_type = jumping_slime,
 		.hp = 4,
-		.speed = 6,
+		.speed = 2,
 		.is_grounded = false, 
 		.is_hit = false,
 		.radius = 8,
-		.pos = (vec2){128,24},
+		.pos = (vec2){200,200},
 		.size = (vec2){16,16},
 		.vel = (vec2){0,0},
 		// .vec = (vec2){0,0},
@@ -52,19 +52,17 @@ void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 	switch (gameplay)
 	{
 	case hh_e_setup_screen:
-		printf("%d\n",game->current_level);
 		bullets = hh_init_bullets(total_bullets);
 		hh_setup_screen(game->level[game->current_level]);
 		gameplay = hh_e_play_level;
-		enemy.hp=4;
 		break;
 	case hh_e_play_level:
-		// TODO: here come all the different functions for the gameplay
-		vec_cor cam_pos;//value in tiles
+
+		vec_cor cam_pos;
 		cam_pos = hh_draw_screen(player1.pos);
 		hh_player_actions(&player1);
 		hh_multiple_bullets(player1.pos,bullets);
-		hh_multiple_enemies(cam_pos, &enemy,1);
+		hh_multiple_enemies(&enemy, player1, cam_pos, 1);
 		hh_check_all_collisions(&player1,&enemy,1,bullets,total_bullets,cam_pos);
 		hh_solve_hitted_enemies(&enemy,1);
 	  	hh_render_all_entities(&player1,bullets,&enemy,total_bullets,1, cam_pos);
@@ -74,19 +72,24 @@ void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 		if(game->level[game->current_level].hh_level_completed){ 
 			gameplay = hh_e_level_complete;
 		}
+		else if(player1.hp == 0){
+			gameplay = hh_e_game_over;
+		}
 		break;
 	case hh_e_level_complete:
+		// TODO: from complete to shop or game_over
 		if(game->current_level < 3){
 			game->current_level+=1;
 			gameplay = hh_e_setup_screen;
 		}
 		else {
+			
          gameplay = hh_e_game_over;
       }
 		break;
 	case hh_e_game_over:
 		// todo make reset levels
-		hh_reset_levels();
+		hh_reset_levels(&player1);
 		gameplay = hh_e_setup_screen;
 		*hh_game_state = 	hh_e_state_game_over;
 		break;
@@ -95,7 +98,28 @@ void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 	}
 	
 }
-void hh_reset_levels(){}
+void hh_reset_levels(hh_entity* player){
+	*player = (hh_entity){
+		.hp = 4,
+		.speed = 6,
+		.is_grounded = false,
+		.is_hit = false,
+		.radius = 16,
+		.pos = (vec2){32,32},
+		.size = (vec2){32,32},
+		.vel = (vec2){0,0},
+		.render = {
+			.frame0 = 3,
+			.palette = 3,
+			.fam = (hh_s_ppu_loc_fam_entry){
+				.horizontal_flip = false,
+				.vertical_flip = false,
+				.palette_index = 3,
+				.tilemap_index = 80,
+			}
+		}
+	};
+}
 
 
 void hh_render_all_entities(hh_entity* player, hh_entity* bullets, hh_entity* enemies, int bullet_size, int enemy_size, vec_cor cam_pos){
diff --git a/src/game_loop/gameplay.h b/src/game_loop/gameplay.h
index 9d66c37..8adddb4 100644
--- a/src/game_loop/gameplay.h
+++ b/src/game_loop/gameplay.h
@@ -15,8 +15,9 @@ typedef enum {
 	hh_e_level_complete,
 	hh_e_game_over,
 }hh_e_gameplay;
+
 /** @brief resets all the levels the first condition */
-void hh_reset_levels();
+void hh_reset_levels(hh_entity* player);
 /** @brief game loop function to handle the gameplay*/
 void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state);
 /** @brief renders all the entities*/
diff --git a/src/game_loop/starting_screen.c b/src/game_loop/starting_screen.c
index c11e4fc..d9f8ea6 100644
--- a/src/game_loop/starting_screen.c
+++ b/src/game_loop/starting_screen.c
@@ -11,6 +11,7 @@ bool hh_show_starting_screen(){
 	{
 	case hh_e_state_show:
 		hh_clear_screen();
+		hh_clear_sprite();
 		hh_init_title_screen();
 		hh_e_starting_screen = hh_e_state_input;
 		return false;
diff --git a/src/makefile b/src/makefile
index fdd8ab5..7f2cdc1 100644
--- a/src/makefile
+++ b/src/makefile
@@ -42,6 +42,7 @@ LOCAL_SRCS += main.c \
 							engine/title_screen.c \
 							engine/level_const.c \
 							engine/enemy.c \
+							engine/enemy_ai.c \
 							engine/animator.c \
 							game_loop/shop.c \
 							game_loop/gameplay.c \