From 854a80001b9798d1454e4308e4efba96431e44d8 Mon Sep 17 00:00:00 2001
From: NielsCoding <48092678+heavydemon21@users.noreply.github.com>
Date: Tue, 4 Apr 2023 15:25:34 +0200
Subject: bullet/player/enemy/gameplay

bullet only needs different directions
player is done
enemy needs ai(Bjorn)
gameplay may need some finetuning
---
 src/demo.c                     |  2 +-
 src/engine/bullet.c            | 43 +++++++++++++++++-------------------
 src/engine/bullet.h            | 12 +++++-----
 src/engine/draw_screen.c       |  4 ++--
 src/engine/draw_screen.h       | 14 +++++-------
 src/engine/enemy.c             | 31 ++++++++++++++++++++++++++
 src/engine/enemy.h             | 18 +++++++++++++++
 src/engine/entity.c            | 22 +++++++++++++++++++
 src/engine/entity.h            | 12 +++++++---
 src/engine/level_const.h       |  1 +
 src/engine/player_controller.c | 35 +----------------------------
 src/engine/player_controller.h |  2 +-
 src/game_loop/game_over.h      |  2 +-
 src/game_loop/gameplay.c       | 50 +++++++++++++++++++++++++++++-------------
 src/game_loop/gameplay.h       | 11 +++++++---
 src/makefile                   |  1 +
 16 files changed, 164 insertions(+), 96 deletions(-)
 create mode 100644 src/engine/enemy.c
 create mode 100644 src/engine/enemy.h

diff --git a/src/demo.c b/src/demo.c
index 725e560..aae1729 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -62,7 +62,7 @@ void hh_demo_loop(unsigned long frame) {
 		hh_shop(&hh_game_states);
 		break;
 	case hh_e_state_gameplay:
-		hh_gameplay(hh_game, &hh_game_states);
+		hh_gameplay(&hh_game, &hh_game_states);
 		break;
 	case hh_e_state_game_over:
 		// todo:
diff --git a/src/engine/bullet.c b/src/engine/bullet.c
index 40f33d9..55b20cc 100644
--- a/src/engine/bullet.c
+++ b/src/engine/bullet.c
@@ -2,10 +2,13 @@
 int bullets_size=0;
 static int current_bullet=0;
 
-
+hh_entity* all_bullets=NULL;
 hh_entity* hh_init_bullets(int size) {
+    if (all_bullets != NULL) {
+        free(all_bullets);
+    }
     bullets_size = size;
-    hh_entity* all_bullets = malloc(size * sizeof(hh_entity));
+    all_bullets = malloc(size * sizeof(hh_entity));
     hh_entity bullet = {
         .speed = 1,
         .is_grounded = true,
@@ -13,7 +16,7 @@ hh_entity* hh_init_bullets(int size) {
         .radius = 4,
         .pos = (vec2){-16,-16},
         .vel = (vec2){0,0},
-		  .size = (vec2) { 13,16},
+        .size = (vec2) { 13,16},
         .render = {
             .frame0 = 84,
             .palette = 3,
@@ -39,7 +42,7 @@ bool rising_edge(bool signal, bool* prev) {
     return edge;
 }
 bool prev_signal = false;
-void hh_shoot_bullet(vec2 player, vec_cor cam_pos, hh_entity* bullet){
+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;
@@ -49,36 +52,30 @@ void hh_shoot_bullet(vec2 player, vec_cor cam_pos, hh_entity* bullet){
 
 }
 
-void hh_update_bullet(hh_entity* bullet, vec_cor cam_pos){
+void hh_update_bullet(hh_entity* bullet){
 	if(hh_background_collision_bulllet(*bullet)){
-		bullet->is_grounded=true;
-		bullet->pos.x=-16;
-		bullet->pos.y=-16;
+		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;	
 	}
-	
 
-	// update bullet sprite on ppu
-	bullet->render.fam.position_x = (bullet->pos.x - cam_pos.x);
-	bullet->render.fam.position_y = (bullet->pos.y - cam_pos.y);
-
-}
-void hh_draw_bullet(hh_entity bullet,int number){
-	// hh_s_ppu_loc_fam_entry temp = bullet.render.fam;
-	// hh_ppu_update_foreground(hh_ppu_bullet_fg_offset_idx + number,temp);
-	
 }
-void hh_multiple_bullets(vec2 player, vec_cor cam_pos, hh_entity* bullets){
 
-	hh_shoot_bullet(player,cam_pos, &bullets[current_bullet]);
+void hh_multiple_bullets(vec2 player, hh_entity* bullets){
+
+	hh_shoot_bullet(player, &bullets[current_bullet]);
 	for(int i=0; i < bullets_size;i++){
 		if(!bullets[i].is_grounded){
-			hh_update_bullet(&bullets[i] , cam_pos);
-			hh_update_sprite(hh_ppu_bullet_fg_offset_idx + i, bullets[i], cam_pos);
+			hh_update_bullet(&bullets[i]);
 		}
-
 	}
 }
+
+void hh_bullet_death(hh_entity* bullet){
+	bullet->is_grounded=true;
+	bullet->pos.x= -16;
+	bullet->pos.y= -16;
+}
diff --git a/src/engine/bullet.h b/src/engine/bullet.h
index 4084327..4133032 100644
--- a/src/engine/bullet.h
+++ b/src/engine/bullet.h
@@ -4,13 +4,15 @@
 #include "types.h"
 #include "input.h"
 
-#define hh_ppu_bullet_fg_offset_idx 10
 hh_entity* hh_init_bullets(int size);
 
-static void hh_shoot_bullet(vec2 playerPos, vec_cor cam_pos, hh_entity*);
+/** @brief checks if player hit button and sets the activate bullet*/
+void hh_shoot_bullet(vec2 playerPos, hh_entity*);
 
-static void hh_update_bullet(hh_entity* , vec_cor );
+/** @brief updates single bullet position*/
+void hh_update_bullet(hh_entity* );
 
-static void hh_draw_bullet(hh_entity, int);
+/** @brief calculates all the bullets positions and which to shoot */
+void hh_multiple_bullets(vec2 player, hh_entity* bullets);
 
-void hh_multiple_bullets(vec2 player, vec_cor cam_pos, hh_entity* bullets);
+void hh_bullet_death(hh_entity* bullet);
diff --git a/src/engine/draw_screen.c b/src/engine/draw_screen.c
index 823c284..74b4ff2 100644
--- a/src/engine/draw_screen.c
+++ b/src/engine/draw_screen.c
@@ -10,7 +10,7 @@ uint8_t hh_world_to_tile(vec2 pos){
 	return tile;
 }
 
-void hh_update_screen(vec2 view, vec2 player){
+void hh_update_screen(vec2 view){
 	int current_tile_y = view.y / HH_PPU_SPRITE_HEIGHT;
 	int current_tile_x = view.x / HH_PPU_SPRITE_WIDTH;
 	int offset_py = view.y - (offsetY / 40 * HH_PPU_SPRITE_HEIGHT);
@@ -86,7 +86,7 @@ vec_cor hh_draw_screen(vec2 player) {
 	viewport.x = CLAMP(viewport.x, 0, level.size.x * HH_PPU_SPRITE_WIDTH - HH_PPU_SCREEN_WIDTH);
 	viewport.y = CLAMP(viewport.y, 0, level.size.y * HH_PPU_SPRITE_HEIGHT - HH_PPU_SCREEN_HEIGHT);
 	
-	hh_update_screen((vec2){.y=viewport.y,.x=viewport.x},player);
+	hh_update_screen((vec2){.y=viewport.y,.x=viewport.x});
    if (viewport.x == previousViewport.x && viewport.y == previousViewport.y){}
 	else{
 		hh_ppu_update_aux((hh_s_ppu_loc_aux){
diff --git a/src/engine/draw_screen.h b/src/engine/draw_screen.h
index 9130842..4829bc6 100644
--- a/src/engine/draw_screen.h
+++ b/src/engine/draw_screen.h
@@ -11,24 +11,22 @@
 #include <stdlib.h>
 #include "engine/camera.h"
 
-#define hh_max_x_size 40 
-#define hh_max_y_size 30
-
-/** @brief return a single tile from world binary */
+/** @brief return a single tile from world */
 uint8_t hh_world_to_tile(vec2 pos);
 
-/** @brief shift to level if viewport changed position */
+/** @brief main function for the screen. shift through the map and update the camera based on the player */
 vec_cor hh_draw_screen(vec2 player);
 
-/** @brief send data to BAM memory from binary level */
+/** @brief sets the start of a level */
 void hh_setup_screen(hh_level_entity currentlevel);
-/** @brief updates screen based on view and maybe player position if it needs to turn back*/
-void hh_update_screen(vec2 view, vec2 );
+/** @brief updates screen if view is at the beginning or end */
+void hh_update_screen(vec2 view);
 
 /** @brief send black screen to background memory */
 void hh_clear_screen();
 
 /** @brief clears all sprite data */
 void hh_clear_sprite();
+
 /** @brief send data to BAM memory from binary from shop */
 void hh_setup_Shop();
diff --git a/src/engine/enemy.c b/src/engine/enemy.c
new file mode 100644
index 0000000..186cfa0
--- /dev/null
+++ b/src/engine/enemy.c
@@ -0,0 +1,31 @@
+#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){
+	for(int i=0; i < total_enemies;i++){
+			hh_update_enemy(&enemies[i] , cam_pos);
+		}
+
+}
+
+void hh_enemy_death_check(hh_entity* enemy){
+	if(enemy->hp == 0){
+		enemy->is_hit=false;
+		enemy->pos = (vec2){-16, -16};
+	}
+	else{
+		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){
+			hh_enemy_death_check(&enemies[i]);
+		}
+	}
+}
diff --git a/src/engine/enemy.h b/src/engine/enemy.h
new file mode 100644
index 0000000..80498f5
--- /dev/null
+++ b/src/engine/enemy.h
@@ -0,0 +1,18 @@
+#pragma once
+#include "player_controller.h"
+#include "engine/sprite_controller.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);
+
+/** @brief checks if the enemy has zero hp else it takes hp from the enemy */
+void hh_enemy_death_check(hh_entity* enemy);
+
+/** @brieg all the given enemies get controlled if there hit and than calculates the dmg */
+void hh_solve_hitted_enemies(hh_entity* enemies, int total_enemies);
+
diff --git a/src/engine/entity.c b/src/engine/entity.c
index 43a1b73..1cb88be 100644
--- a/src/engine/entity.c
+++ b/src/engine/entity.c
@@ -212,3 +212,25 @@ void hh_hit_entity(hh_entity* object_1, int8_t* hit_timer, int8_t* direction){
 	}
 	
 }
+
+void hh_check_all_collisions(hh_entity* player, hh_entity* enemies, int total_enemies, hh_entity* bullets, int total_bullets, vec_cor cam_pos){
+	for(int enemy = 0; enemy < total_enemies; enemy++){
+		*player = hh_enemy_collision(*player, enemies[enemy]);
+		enemies[enemy].is_hit=false;
+	}
+
+	for(int i = 0; i < total_bullets; i++){
+		if(!bullets[i].is_grounded){ 
+			for (int enemy = 0; enemy < total_enemies; enemy++){
+				
+				if(hh_distance_circles(bullets[i].pos,enemies[enemy].pos,bullets[i].radius,enemies[enemy].radius)){
+					enemies[enemy].is_hit=true;
+					hh_bullet_death(&bullets[i]);
+				}
+			}	
+		}
+	}
+	
+}
+
+
diff --git a/src/engine/entity.h b/src/engine/entity.h
index 9a1d51e..fde9341 100644
--- a/src/engine/entity.h
+++ b/src/engine/entity.h
@@ -7,6 +7,9 @@
 #include "ppu/types.h"
 #include "engine/maths.h"
 #include "engine/types.h"
+#include "engine/animator.h"
+#include "engine/sprite_controller.h"
+
 // #include "engine/animator.h"
 
 // TODO: make a sprite update function (and required data structs?)
@@ -43,11 +46,14 @@ hh_entity hh_enemy_collision(hh_entity temp_player, hh_entity temp_enemy);
 /// @return true if objects collids
 bool hh_distance_circles(vec2 object_1, vec2 object_2, int radius_1, int radius_2);
 
-// TODO: comments on functions below
+/** @brief jumps a entity. TODO: input jumping how high and no magic number*/  
 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);
 
-
+/** @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.h b/src/engine/level_const.h
index b86ae7b..6275b72 100644
--- a/src/engine/level_const.h
+++ b/src/engine/level_const.h
@@ -28,4 +28,5 @@ typedef struct  {
 
 }hh_g_all_levels;
 
+/** @brief init all the levels*/
 hh_g_all_levels hh_init_game_levels();
diff --git a/src/engine/player_controller.c b/src/engine/player_controller.c
index ee0dfc5..83c5966 100644
--- a/src/engine/player_controller.c
+++ b/src/engine/player_controller.c
@@ -7,7 +7,7 @@
 
 #include "engine/animator.h"
 #include "engine/bullet.h"
-void hh_player_actions(hh_entity* player, vec_cor cam_pos){
+void hh_player_actions(hh_entity* player){
 
 	static hh_entity player_new = {0};
 	player_new = *player;
@@ -35,39 +35,6 @@ void hh_player_actions(hh_entity* player, vec_cor cam_pos){
 
 
 	*player =  hh_background_collision ( *player, player_new);
-	
-	uint16_t idx = 16;
-	idx = hh_update_sprite(idx, player, cam_pos);
-	// idx = hh_update_sprite(idx, &enemy, cam_pos);
-
-	idx =16;
-
-	// TODO: make this a function call
-	// update player sprite on ppu
-	// player.render.fam.position_x = (player.pos.x-cam_pos.x);
-	// player.render.fam.position_y = (player.pos.y-cam_pos.y);
-
-	// enemy.render.fam.position_x = (enemy.pos.x-cam_pos.x);
-	// enemy.render.fam.position_y = (enemy.pos.y-cam_pos.y);
-
-
-	// TODO: make this loop a function call
-	// for (int i = 0; i < 4; i++)
-	// {
-	// 	hh_s_ppu_loc_fam_entry temp = player.render.fam;
-	// 	temp.position_x = player.render.fam.position_x+(!(player.vel.x>0)?-1:1)*(i%2?8:-8);
-	// 	temp.position_y = player.render.fam.position_y+(i>1?0:-16);
-	// 	temp.tilemap_index = player.render.fam.tilemap_index + i;
-	// 	temp.horizontal_flip = !(player.vel.x>0);
-	// 	hh_ppu_update_foreground(i,temp);
-
-	// 	// hh_s_ppu_loc_fam_entry temp = {
-	// 	// 	.position_x = player.render.fam.position_x+(!(player.vel.x>0)?-1:1)*(i%2?8:-8)
-	// 	// };
-
-	// }
-
-	// hh_ppu_update_foreground(4, enemy.render.fam);
 
 }
 
diff --git a/src/engine/player_controller.h b/src/engine/player_controller.h
index 4a325e8..23749e5 100644
--- a/src/engine/player_controller.h
+++ b/src/engine/player_controller.h
@@ -4,4 +4,4 @@
 #include "engine/entity.h"
 // inputs
 
-void hh_player_actions(hh_entity* player, vec_cor cam_pos);
+void hh_player_actions(hh_entity* player);
diff --git a/src/game_loop/game_over.h b/src/game_loop/game_over.h
index 80db667..47318df 100644
--- a/src/game_loop/game_over.h
+++ b/src/game_loop/game_over.h
@@ -14,5 +14,5 @@ typedef enum {
 	hh_e_game_over_end,
 } hh_e_game_over;
 
-
+/** @brief game loop  function game over*/
 void hh_game_over(hh_e_game_state*);
diff --git a/src/game_loop/gameplay.c b/src/game_loop/gameplay.c
index 521ab85..da029f3 100644
--- a/src/game_loop/gameplay.c
+++ b/src/game_loop/gameplay.c
@@ -1,9 +1,9 @@
 #include "gameplay.h"
-
+#include "engine/entity.h"
 // player struct
 
 
-void hh_gameplay(hh_g_all_levels game, hh_e_game_state* hh_game_state){
+void hh_gameplay(hh_g_all_levels* game, hh_e_game_state* hh_game_state){
 	static hh_e_gameplay gameplay = hh_e_setup_screen;
 	static hh_entity* bullets;
 	static hh_entity player1={
@@ -16,7 +16,7 @@ void hh_gameplay(hh_g_all_levels game, hh_e_game_state* hh_game_state){
 		.size = (vec2){32,32},
 		.vel = (vec2){0,0},
 		.render = {
-			.frame0 = 80,
+			.frame0 = 3,
 			.palette = 3,
 			.fam = (hh_s_ppu_loc_fam_entry){
 				.horizontal_flip = false,
@@ -33,11 +33,12 @@ void hh_gameplay(hh_g_all_levels game, hh_e_game_state* hh_game_state){
 		.is_grounded = false, 
 		.is_hit = false,
 		.radius = 8,
-		.pos = (vec2){128,48},
+		.pos = (vec2){128,24},
+		.size = (vec2){16,16},
 		.vel = (vec2){0,0},
 		// .vec = (vec2){0,0},
 		.render = {
-			.frame0 = 20,
+			.frame0 = 1,
 			.palette = 7,
 			.fam = (hh_s_ppu_loc_fam_entry){
 				.horizontal_flip = false,
@@ -47,31 +48,36 @@ void hh_gameplay(hh_g_all_levels game, hh_e_game_state* hh_game_state){
 			}
 		}
 	};
-
+	static int total_bullets = 5;
 	switch (gameplay)
 	{
 	case hh_e_setup_screen:
-		bullets = hh_init_bullets(10);
-		hh_setup_screen(game.level[game.current_level]);
+		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
 		cam_pos = hh_draw_screen(player1.pos);
-		hh_player_actions(&player1 ,cam_pos);
-		hh_multiple_bullets(player1.pos, cam_pos,bullets);
-		// enemy's
-
+		hh_player_actions(&player1);
+		hh_multiple_bullets(player1.pos,bullets);
+		hh_multiple_enemies(cam_pos, &enemy,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);
 
 
-		if(game.level[game.current_level].hh_level_completed){
+		
+		if(game->level[game->current_level].hh_level_completed){ 
 			gameplay = hh_e_level_complete;
 		}
 		break;
 	case hh_e_level_complete:
-		if(game.current_level < 3){
-			game.current_level++;
+		if(game->current_level < 3){
+			game->current_level+=1;
 			gameplay = hh_e_setup_screen;
 		}
 		else {
@@ -90,3 +96,17 @@ void hh_gameplay(hh_g_all_levels game, hh_e_game_state* hh_game_state){
 	
 }
 void hh_reset_levels(){}
+
+
+void hh_render_all_entities(hh_entity* player, hh_entity* bullets, hh_entity* enemies, int bullet_size, int enemy_size, vec_cor cam_pos){
+
+	int index = 0;
+	hh_update_sprite(0 , player, cam_pos);
+	
+	for (int i = 0; i < bullet_size; i++) {
+		hh_update_sprite(i+5,&bullets[i],cam_pos);
+ 	}
+	for (int i = 0; i < enemy_size; i++) {
+		hh_update_sprite(i+5+bullet_size,&enemies[i],cam_pos);
+	}
+}
diff --git a/src/game_loop/gameplay.h b/src/game_loop/gameplay.h
index fb5637c..9d66c37 100644
--- a/src/game_loop/gameplay.h
+++ b/src/game_loop/gameplay.h
@@ -5,6 +5,9 @@
 #include "engine/sprite_controller.h"
 #include "game_loop/starting_screen.h"
 #include "engine/level_const.h"
+#include "engine/animator.h"
+#include "engine/enemy.h"
+
 
 typedef enum {
 	hh_e_setup_screen,
@@ -12,7 +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_gameplay(hh_g_all_levels, hh_e_game_state*);
-
+/** @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*/
+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/makefile b/src/makefile
index c30840d..fdd8ab5 100644
--- a/src/makefile
+++ b/src/makefile
@@ -41,6 +41,7 @@ LOCAL_SRCS += main.c \
 							engine/bullet.c \
 							engine/title_screen.c \
 							engine/level_const.c \
+							engine/enemy.c \
 							engine/animator.c \
 							game_loop/shop.c \
 							game_loop/gameplay.c \
-- 
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