Player-Enemy collision

Added player with enemy collision. Also changed input system to a vector system with friction and gravity. Jump also works. Enemy is 1 stationary object.

5 files changed, 253 insertions, 184 deletions

diff --git a/src/demo.c b/src/demo.c
index baaf73d..d4d1bf7 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -1,26 +1,21 @@
 #include <math.h>
 
 #include "demo.h"
-#include "entity.h"
 #include "input.h"
+#include "entity.h"
 #include "ppu/ppu.h"
 
-#define HH_DEMO_BALL_COUNT 1
-hh_s_ppu_loc_fam_entry g_hh_demo_balls[HH_DEMO_BALL_COUNT];
+#include "engine/maths.h"
+#include "engine/camera.h"
+#include "engine/entity.h"
+#include "engine/draw_screen.h"
+#include "engine/player_controller.h"
+#include "engine/sprite_controller.h"
 
-hh_s_entity_player g_hh_player_1 = {
-	.pos_x		 = 31000, // 0b0000 0001 0011 0110
-	.pos_y		 = 21000,
-	.radius		 = 8,
-	.speed		 = 100,
-	.direction_x = 1,
-	.rotation	 = 8,
-	.in_air		 = false,
-};
 
-void hh_player_movement();
 
-uint16_t g_hh_pos_x; // 0b0000 0001 0011 0110
+
+uint16_t g_hh_pos_x = 1000; // 0b0000 0001 0011 0110
 uint16_t g_hh_pos_y;
 uint8_t g_hh_left  = 0;
 uint8_t g_hh_right = 0;
@@ -29,67 +24,29 @@ uint8_t g_hh_down  = 0;
 uint8_t g_hh_pos_x_bit[2];
 uint8_t g_hh_pos_y_bit[2];
 uint8_t g_hh_data_send[3];
-int g_hh_tile_x;
+int g_hh_tile_size = 8;
 int g_hh_tile_y;
 
-void hh_demo_setup() {
-	// load sprites
-	hh_ppu_update_sprite(0, HH_DBG_SPRITE_BALL);
-	hh_ppu_update_sprite(1, HH_DBG_SPRITE_CHECKERBOARD);
-
-	// background pattern
-	hh_ppu_update_color(0, 1, (hh_ppu_rgb_color_t){0x4, 0x4, 0x4});
-	for (unsigned i = 0; i < HH_PPU_BG_CANVAS_TILES_H * HH_PPU_BG_CANVAS_TILES_V; i++) {
-		hh_ppu_update_background(i, (hh_s_ppu_loc_bam_entry){
-										.horizontal_flip = false,
-										.vertical_flip	 = false,
-										.palette_index	 = 0,
-										.tilemap_index	 = 1,
-									});
-	}
-
-	// cool colors
-	hh_ppu_update_color(1, 1, (hh_ppu_rgb_color_t){0xf, 0x0, 0xf});
-	hh_ppu_update_color(2, 1, (hh_ppu_rgb_color_t){0xf, 0xf, 0xf});
-	hh_ppu_update_color(3, 1, (hh_ppu_rgb_color_t){0xf, 0x0, 0x0});
-	hh_ppu_update_color(4, 1, (hh_ppu_rgb_color_t){0x0, 0xf, 0xf});
-	hh_ppu_update_color(5, 1, (hh_ppu_rgb_color_t){0x0, 0x0, 0xf});
-
-	// balls
-	for (unsigned i = 0; i < HH_DEMO_BALL_COUNT; i++) {
-		g_hh_demo_balls[i].horizontal_flip = false;
-		g_hh_demo_balls[i].vertical_flip   = false;
-		g_hh_demo_balls[i].palette_index   = i + 1;
-		g_hh_demo_balls[i].tilemap_index   = 0;
-	}
-}
-
-void hh_demo_loop(unsigned long frame) {
-	hh_player_movement();
-	// input testing (no hitbox stuff)
-	// g_hh_player_1.pos_x  += ((-1 * g_hh_controller_p1.dpad_left) + (1 * g_hh_controller_p1.dpad_right)) * g_hh_player_1.speed; // -1 = L || 1 == R
-	// g_hh_player_1.pos_y  += ((-1 * g_hh_controller_p1.dpad_up) + (1 * g_hh_controller_p1.dpad_down)) * g_hh_player_1.speed; // -1 = D || 1 == U
+typedef struct {
+	vec2 pos;
+	uint8_t idx;
+}hh_s_tiles;
 
 
-	// adjust map size
-	g_hh_pos_x = g_hh_player_1.pos_x / 100;
-	g_hh_pos_y = g_hh_player_1.pos_y / 100;
+hh_entity hh_g_player, hh_g_player_new;
+void hh_demo_setup() {
 
+	hh_setup_palettes();
+	hh_setup_screen();
 
 
+}
 
-	// update player sprite on ppu
-	g_hh_demo_balls[0].position_x = g_hh_pos_x;
-	g_hh_demo_balls[0].position_y = g_hh_pos_y;
-	hh_ppu_update_foreground(0, g_hh_demo_balls[0]);
+void hh_demo_loop(unsigned long frame) {
 
-	// set background pattern position
-	hh_ppu_update_aux((hh_s_ppu_loc_aux){
-		.bg_shift_x = (frame / 2) % HH_PPU_SPRITE_WIDTH,
-		.bg_shift_y = (frame / 8) % HH_PPU_SPRITE_HEIGHT,
-		.fg_fetch	= 0,
-		.sysreset	= 0,
-	});
+	
+	hh_player_actions();
+	
 }
 
 // void sendData(uint8_t address, uint16_t data) {
@@ -103,84 +60,8 @@ void hh_demo_loop(unsigned long frame) {
 // 	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
 // }
 
-void hh_player_movement() {
-	int8_t directionX = (-1 * g_hh_controller_p1.dpad_left) + (1 * g_hh_controller_p1.dpad_right); // -1 = L || 1 == R
-	int8_t directionY = (-1 * g_hh_controller_p1.dpad_up) + (1 * g_hh_controller_p1.dpad_down);	   // -1 = D || 1 == U
-
-	uint8_t i, j;
-	uint8_t rotation = 0; // 0-7
-
-	// rotation calc
-	for (i = -1; i < 2; i++) {
-		for (j = -1; j < 2; j++) {
-			if (directionX == i) {
-				if (directionY == j) {
-					if (i != 0 && j != 0) // dont update when player idle
-					{
-						g_hh_player_1.rotation = rotation;
-					}
-				}
-			}
-			rotation++;
-		}
-	}
-	// direction calc
-	if (directionX != 0) // update direction if player is not idle
-	{
-		g_hh_player_1.direction_x = directionX;
-	}
-	// collision map x-axis
-
-	// tile calc including radius and direction for background coliision
-
-	uint16_t tileColX;
-	uint16_t tileColY = (g_hh_player_1.pos_y / 100) / 16;
-	;
-
-	// remaining space between grid and exact
-	uint8_t modTileX;
-	uint8_t modTileY;
-
-	if (g_hh_player_1.in_air == false && directionX != 0) {
-		if (directionX == 1) {
-			tileColX = ((g_hh_player_1.pos_x / 100) + g_hh_player_1.radius) / 16;
-			modTileX = (g_hh_player_1.pos_x + (100 * g_hh_player_1.radius)) % 1600;
-		} else if (directionX == -1) {
-			tileColX = ((g_hh_player_1.pos_x / 100) - g_hh_player_1.radius) / 16;
-			modTileX = (g_hh_player_1.pos_x - (100 * g_hh_player_1.radius)) % 1600;
-		}
-
-		if (HH_DEMO_HITBOX_TILEMAP[tileColY][tileColX + directionX] != 1) {
-			g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * g_hh_player_1.speed); // NEW x set
-		}
-
-		else if (HH_DEMO_HITBOX_TILEMAP[tileColY][tileColX + directionX] == 1) {
-			if (modTileX < g_hh_player_1.speed) {
-				g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * modTileX); // NEW x set
-			} else {
-				g_hh_player_1.pos_x = g_hh_player_1.pos_x + (directionX * g_hh_player_1.speed); // NEW x set
-			}
-		}
-
-	} else // if in air different all borders have to be checked
-	{
-	}
-
-
-	if(directionY != 0)
-	{
-	//	g_hh_player_1.pos_y = g_hh_player_1.pos_y + (directionY * g_hh_player_1.speed * 2); // NEW x set
-	}
-	// collision map floor (y-axis) (falling)
-	//  if falling no jump press (implement)
-	/*
-	tileColY = (( g_hh_player_1.pos_y / 100) + g_hh_player_1.radius) / 16; //bottom of player box
-	modTileY = 1;
-	if(HH_DEMO_HITBOX_TILEMAP[tileColY+1][tileColX] != 1) //rework after jumping
-	{
-		g_hh_player_1.pos_y = g_hh_player_1.pos_y + 5 ;// NEW y set //makew var gravity
-		//playerStat = falling; //for later use of graphics/sound
-	}
-	*/
-	// else if(HH_DEMO_HITBOX_TILEMAP[])
-}
+
+
+
+
+
diff --git a/src/engine/entity.c b/src/engine/entity.c
index 153e7e1..535759d 100644
--- a/src/engine/entity.c
+++ b/src/engine/entity.c
@@ -43,4 +43,85 @@ 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_old_entity.is_grounded = false;
+ 
+// solves x collision
+	if (temp_old_entity.vel.x <= 0) {
+		if (hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 0, .y=temp_old_entity.pos.y + 0})) || 
+			hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 0, .y=temp_old_entity.pos.y + 15}))) {
+			temp_new_entity.pos.x = (temp_new_entity.pos.x & ~15) + 16,
+			temp_new_entity.vel.x = 0;
+		}
+	} else {
+		if (hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 16, .y=temp_old_entity.pos.y + 0})) || 
+			hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 16, .y=temp_old_entity.pos.y + 15}))) {
+			temp_new_entity.pos.x = temp_new_entity.pos.x & ~15, // <-- magic comma, NOT TOUCHY
+			temp_new_entity.vel.x = 0;
+		}
+	}
+
+	//solves y collision
+	if (temp_old_entity.vel.y <= 0) {
+		if (hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 0, .y=temp_new_entity.pos.y + 0})) || 
+			hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 15, .y=temp_new_entity.pos.y + 0}))) {
+			temp_new_entity.pos.y = (temp_new_entity.pos.y & ~15) + 16,
+			temp_new_entity.vel.y = 0;
+		}
+	} else {
+		if (hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 0, .y=temp_new_entity.pos.y + 15})) || 
+			hh_colidable(hh_world_to_tile((vec2){.x=temp_new_entity.pos.x + 15, .y=temp_new_entity.pos.y + 15}))) {
+			temp_new_entity.pos.y = temp_new_entity.pos.y & ~15,
+			temp_new_entity.vel.y = 0;
+			temp_old_entity.is_grounded = true;
+		}
+	}
+	temp_old_entity.pos = temp_new_entity.pos; 
+	temp_old_entity.vel = temp_new_entity.vel;
+	return temp_old_entity;
+}
+
+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);
+
+	if (collide == true && temp_player.is_hit == false)
+	{
+		temp_player.is_hit = true;
+		//angle = atan2( tempEntity.pos_y - tempPlayer.pos_y, tempEntity.pos_x - tempPlayer.pos_x);
+		if(temp_player.pos.x <= temp_enemy.pos.x) //player left of enemy -- creates flinch movement L or R
+		{
+		//	printf("BONK-left!/n");
+			temp_player.vel.y = -5;
+			temp_player.vel.x = -8;
+		}	else {
+		//	printf("BONK-right!/n");
+			temp_player.vel.y = -5;
+			temp_player.vel.x = 8;
+		}
+		// ghost mode / invulnerable or other things on hit
+		//	temp_player.hp--;
+			
+	} else {
+		temp_player.is_hit = false;
+		
+	}
+
+
+return temp_player;
+}
+
+
+bool hh_distance_circles (vec2 object_1, vec2 object_2, int radius_1, int radius_2){
+	int a_squared = (object_1.x - object_2.x) * (object_1.x - object_2.x);
+	int b_squared = (object_1.y - object_2.y) * (object_1.y - object_2.y);
+	int c_squared = a_squared + b_squared; 
+	int radius = ( radius_1 + radius_2) * ( radius_1 + radius_2 );
+
+		if( c_squared <= radius ){
+			return true;
+		} else {
+			return false;
+		}
+}
diff --git a/src/engine/entity.h b/src/engine/entity.h
index f45dae2..cad6ba4 100644
--- a/src/engine/entity.h
+++ b/src/engine/entity.h
@@ -2,6 +2,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <stdio.h>
 
 #include "ppu/types.h"
 
@@ -32,6 +33,8 @@ typedef struct {
 typedef struct {
     vec2 pos, vel, vec;
     bool is_grounded;
+	 bool is_hit;
+	 uint8_t radius;
     int8_t hp;
     int8_t speed;
 	 hh_s_rendering render;
@@ -55,3 +58,25 @@ bool hh_collision(vec2 pos1, vec2 pos2);
 /// @param entity position
 /// @return solved new entity position
 void hh_solve_collision(vec2 pos_environment, hh_entity* entity);
+
+/// @brief solve collision of entity with background tiles
+/// @param temp_old_entity old data of entity 
+/// @param temp_new_entity new data of entity where it wants to go to
+/// @return updated new entity where it actually can go to
+hh_entity hh_background_collision (hh_entity temp_old_entity, hh_entity temp_new_entity);
+
+/// @brief solve collision of player with enemy 
+/// @param temp_player data of player 
+/// @param temp_enemy data of enemy
+/// @return updated player with new stats if hitted with enemy
+hh_entity hh_enemy_collision(hh_entity temp_player, hh_entity temp_enemy);
+
+/// @brief calculate if circles (entity) hit each other 
+/// @param object_1 position of first object (entity)
+/// @param object_2 position of second object (entity)
+/// @param radius_1 radius of first object (entity)
+/// @param radius_2 radius of second object (entity)
+/// @return true if objects collids
+bool hh_distance_circles (vec2 object_1, vec2 object_2, int radius_1, int radius_2);
+
+
diff --git a/src/engine/player_controller.c b/src/engine/player_controller.c
index 22f6eb6..d351bee 100644
--- a/src/engine/player_controller.c
+++ b/src/engine/player_controller.c
@@ -11,6 +11,8 @@ void hh_player_actions() {
 		.hp = 4,
 		.speed = 6,
 		.is_grounded = false,
+		.is_hit = false,
+		.radius = 8,
 		.pos = (vec2){32,32},
 		.vel = (vec2){0,0},
 		.vec = (vec2){0,0},
@@ -26,9 +28,113 @@ void hh_player_actions() {
 		}
 	}, player_new = {0};
 
+
+	static hh_entity enemy={
+		.hp = 4,
+		.speed = 6,
+		.is_grounded = false,
+		.is_hit = false,
+		.radius = 8,
+		.pos = (vec2){128,48},
+		.vel = (vec2){0,0},
+		.vec = (vec2){0,0},
+		.render = {
+			.frame0 = 20,
+			.palette = 7,
+			.fam = (hh_s_ppu_loc_fam_entry){
+				.horizontal_flip = false,
+				.vertical_flip = false,
+				.palette_index = 7,
+				.tilemap_index = 1,
+			}
+		}
+	};
+	player_new = player;
 	// hh_input_read();
+	static uint8_t hit = 0;
+	int8_t hit_timer = 0;
+	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);
+
+	if(player.is_hit == true){
+		hit_timer = 9;
+		player.is_hit = false;	
+	} 
+	if(hit_timer > -10){
+			hit_timer--;
+	}
+
+	if(hit_timer <= 0){
+		if(direction_x != 0){
+			if(player.vel.x > -1 * player.speed && player.vel.x < player.speed) {
+				player.vel.x = player.vel.x + direction_x;
+			} else {
+				if (player.vel.x > 0) {
+					player.vel.x--;
+				} else if(player.vel.x < 0) {
+					player.vel.x++; 
+				}
+			}
+		} else {
+			if (player.vel.x > 0) {
+				player.vel.x--;
+			} else if(player.vel.x < 0) {
+			player.vel.x++; 
+			}
+		}
+		
+		/* // movement Y (w-s) disable gravity to use this
+		if(direction_y != 0){
+			if(player.vel.y > -4 && player.vel.y < 4 ) {
+				player.vel.y =  player.vel.y + direction_y;
+			}
+		} else {
+			if (player.vel.y > 0) {
+				player.vel.y--;
+			} else if(player.vel.y < 0) {
+				player.vel.y++; 
+			}
+		}		
+		
+		*/
+	} else {
+		if (player.vel.x > 0) {
+			player.vel.x--;
+		} else if(player.vel.x < 0) {
+			player.vel.x++; 
+		}
+			player.vel.y++;
+	}
+	
+
+	if (g_hh_controller_p1.button_primary && player.is_grounded == true) {//JUMP
+	 	player.vel.y = -10;
+		player.is_grounded = false;
+	} else if (player.vel.y < 6){
+		 player.vel.y += 1; //gravity
+	}
+
+
+
+	
+/*
 	player.vel = (vec2){.x = (-1 * g_hh_controller_p1.dpad_left) + (1 * g_hh_controller_p1.dpad_right),
 	.y = (-1 * g_hh_controller_p1.dpad_up) + (1 * g_hh_controller_p1.dpad_down) };
+
+		player_new.vel = (vec2){
+		.x = player.vel.x,
+		.y = player.vel.y,
+	};
+*/
+
+		player_new.vel = (vec2){
+		.x = player.vel.x,
+		.y = player.vel.y,
+	};
+
+		player_new = hh_enemy_collision(player, enemy);
+	
+	
 	// const int8_t maa = 3;
 	// const int8_t mbb = -3;
 	// if (g_hh_controller_p1.dpad_up)
@@ -55,8 +161,8 @@ void hh_player_actions() {
 	// player.vel.x = CLAMP(player.vel.x,-32,32);
 
 	player_new.pos = (vec2){
-		.x = player.pos.x + player.vel.x,
-		.y = player.pos.y + player.vel.y,
+		.x = player.pos.x + player_new.vel.x,
+		.y = player.pos.y + player_new.vel.y,
 	};
 
 
@@ -96,41 +202,10 @@ void hh_player_actions() {
 	// 		hh_solve_collision(tiles[i].pos, &player);
 	// 	}
 	// }
-
-	player_new.is_grounded = false;
-
-	// solves x collision
-	if (player.vel.x <= 0) {
-		if (hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 0, .y=player.pos.y + 0})) || 
-			hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 0, .y=player.pos.y + 15}))) {
-			player_new.pos.x = (player_new.pos.x & ~15) + 16,
-			player_new.vel.x = 0;
-		}
-	} else {
-		if (hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 16, .y=player.pos.y + 0})) || 
-			hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 16, .y=player.pos.y + 15}))) {
-			player_new.pos.x = player_new.pos.x & ~15, // <-- magic comma, NOT TOUCHY
-			player_new.vel.x = 0;
-		}
-	}
-
-	//solves y collision
-	if (player.vel.y <= 0) {
-		if (hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 0, .y=player_new.pos.y + 0})) || 
-			hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 0, .y=player_new.pos.y + 15}))) {
-			player_new.pos.y = (player_new.pos.y & ~15) + 16,
-			player_new.vel.y = 0;
-		}
-	} else {
-		if (hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 0, .y=player_new.pos.y + 16})) || 
-			hh_colidable(hh_world_to_tile((vec2){.x=player_new.pos.x + 16, .y=player_new.pos.y + 15}))) {
-			player_new.pos.y = player_new.pos.y & ~15,
-			player_new.vel.y = 0;
-			player_new.is_grounded = true;
-		}
-	}
-
-	player = player_new;
+	
+	player =  hh_background_collision ( player, player_new);
+	
+	//player = player_new;
 
 	vec_cor cam_pos;//value in tiles
 	// cam_pos = (vec2){0,0};
@@ -141,10 +216,16 @@ void hh_player_actions() {
 	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);
 
 	player.render.fam.tilemap_index = 2;//TODO: these two lines should be redundant
 	player.render.fam.palette_index = 7;
 	hh_ppu_update_foreground(0, player.render.fam);
 
+	hh_ppu_update_foreground(1, enemy.render.fam);
+
 }
 
+
+
diff --git a/src/ppusim/input.c b/src/ppusim/input.c
index 08bc382..5323fb1 100644
--- a/src/ppusim/input.c
+++ b/src/ppusim/input.c
@@ -12,4 +12,5 @@ void hh_input_read() {
 	g_hh_controller_p1.dpad_down  = kb[SDL_SCANCODE_S];
 	g_hh_controller_p1.dpad_left  = kb[SDL_SCANCODE_A];
 	g_hh_controller_p1.dpad_right = kb[SDL_SCANCODE_D];
+	g_hh_controller_p1.button_primary = kb[SDL_SCANCODE_SPACE];
 }