Merge pull request #28 from UnavailableDev/game-engine

Game engine

22 files changed, 521 insertions, 149 deletions

diff --git a/src/.gitignore b/src/.gitignore
index d8325cf..504b995 100644
--- a/src/.gitignore
+++ b/src/.gitignore
@@ -4,3 +4,4 @@ main.bin
 main
 main.exe
 static/
+*.bin
diff --git a/src/demo.c b/src/demo.c
index baaf73d..95347cb 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -1,12 +1,18 @@
 #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
@@ -32,64 +38,26 @@ uint8_t g_hh_data_send[3];
 int g_hh_tile_x;
 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,
-									});
-	}
+typedef struct {
+	vec2 pos;
+	uint8_t idx;
+}hh_s_tiles;
 
-	// 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
 
+hh_entity hh_g_player, hh_g_player_new;
+void hh_demo_setup() {
 
-	// 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_setup_palettes();
+	hh_setup_screen();
 
+}
 
+void hh_demo_loop(unsigned long frame) {
 
+	// hh_player_movement();
 
-	// 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]);
+	hh_player_actions();
 
-	// 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,
-	});
 }
 
 // void sendData(uint8_t address, uint16_t data) {
diff --git a/src/engine/TODO/entity.c b/src/engine/TODO/entity.c
deleted file mode 100644
index fa550d5..0000000
--- a/src/engine/TODO/entity.c
+++ /dev/null
@@ -1,41 +0,0 @@
-#include <stdbool.h>
-
-#include "hh_entity.h"
-#include "maths.h"
-
-/*
-    PLAYER: (pos on X)
-    ,___,
-    |   |
-    | X |
-    |___|
-
-*/
-
-bool hh_collision(vec2* pos1, vec2* pos2){
-    if (pos2->x == CLAMP(pos2->x,pos1->x,pos1->x+1.0f)){// hit x
-        return true;
-    }
-
-    if (pos2->y == CLAMP(pos2->y,pos1->y,pos1->y+0.99f)){// hit y
-        return true;
-    }
-    return false;
-}
-
-void hh_solve_collision(vec2* pos_environment, hh_entity* entity){
-    if (entity->vec.x > 0.0f){
-        entity->pos.x = MIN(entity->pos.x,pos_environment->x-1.0f);
-        entity->vec.x = 0.0f;
-    } else if (entity->vec.x < 0.0f){
-        entity->pos.x = MAX(entity->pos.x,pos_environment->x+1.0f);
-        entity->vec.x = 0.0f;
-    } else if (entity->vec.y > 0.0f){
-        entity->pos.x = MIN(entity->pos.x,pos_environment->x-1.0f);
-        entity->vec.x = 0.0f;
-    } else if (entity->vec.y < 0.0f){
-        entity->pos.x = MAX(entity->pos.x,pos_environment->x+1.0f);
-        entity->vec.x = 0.0f;
-    }
-}
-
diff --git a/src/engine/TODO/entity.h b/src/engine/TODO/entity.h
deleted file mode 100644
index fdbeb8a..0000000
--- a/src/engine/TODO/entity.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-
-#include "maths.h"
-
-typedef struct {
-    vec2 pos, vec;
-    bool is_grounded;
-    int8_t hp;
-    //armor/block?
-}hh_entity;
-
-/// @brief detect for collision enity and eviroment
-/// @param pos1 position of environment tile to be checked
-/// @param pos2 position entity
-/// @return true if collision between enity and environment
-bool hh_collision(vec2* pos1, vec2* pos2);
-
-/// @brief solve collisions
-/// @param environment position
-/// @param entity position
-/// @return solved new entity position
-void hh_solve_collision(vec2* pos_environment, hh_entity* entity);
diff --git a/src/engine/TODO/player_controller.h b/src/engine/TODO/player_controller.h
deleted file mode 100644
index 1e9b86c..0000000
--- a/src/engine/TODO/player_controller.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#include "maths.h"
-#include "hh_entity.h"
-
-// inputs
diff --git a/src/engine/TODO/sprite_controller.h b/src/engine/TODO/sprite_controller.h
deleted file mode 100644
index c1fadff..0000000
--- a/src/engine/TODO/sprite_controller.h
+++ /dev/null
@@ -1,6 +0,0 @@
-// handles sprites
-
-// Bg sprites
-
-
-// Fg or entity sprites
diff --git a/src/engine/camera.c b/src/engine/camera.c
new file mode 100644
index 0000000..e756bd4
--- /dev/null
+++ b/src/engine/camera.c
@@ -0,0 +1,34 @@
+#include "engine/camera.h"
+
+#include "ppu/consts.h"
+
+
+vec_cor hh_update_camera(vec_cen new, vec2 min, vec2 max){
+
+	//TODO: change floating point math to fix point math
+	//TODO: fix buggy y-axis ??
+
+	// new = vec_cen2cor(new,(vec2){.x=max.x/2,.y=max.y/2});
+	new = vec_cen2cor((vec2){.x=new.x+(HH_PPU_SPRITE_WIDTH/2),.y=(new.y+(HH_PPU_SPRITE_HEIGHT/2))*2},(vec2){.x=max.x/2,.y=max.y/2});
+	// new.x = new.x << HH_MATH_FIXED_POINT;
+	// new.y = new.y << HH_MATH_FIXED_POINT;
+	static vec_cor old;
+	// old.x = old.x << HH_MATH_FIXED_POINT;
+	// old.y = old.y << HH_MATH_FIXED_POINT;
+
+	// int16_t some = 0;
+	// some = some <<= HH_MATH_FIXED_POINT-1;
+
+	new.x = (int)((float)new.x*0.1f + (float)old.x*0.9f);
+	new.y = (int)((float)new.y*0.1f + (float)old.y*0.9f);
+
+	// old.x = old.x >> HH_MATH_FIXED_POINT;
+	// old.y = old.y >> HH_MATH_FIXED_POINT;
+
+
+	old.x = CLAMP(new.x,min.x,max.x);
+	old.y = CLAMP(new.y,min.y,max.y);
+
+	return old;
+}
+
diff --git a/src/engine/camera.h b/src/engine/camera.h
new file mode 100644
index 0000000..b3ffb52
--- /dev/null
+++ b/src/engine/camera.h
@@ -0,0 +1,6 @@
+#pragma once
+
+#include "engine/maths.h"
+
+vec_cor hh_update_camera(vec_cor new, vec2 min, vec2 max);
+
diff --git a/src/engine/draw_screen.c b/src/engine/draw_screen.c
index acf5b41..c4f3389 100644
--- a/src/engine/draw_screen.c
+++ b/src/engine/draw_screen.c
@@ -1,21 +1,22 @@
-#include "draw_screen.h"
+#include "engine/draw_screen.h"
+#include "engine/sprite_controller.h"
 
 uint8_t hh_world_to_tile(vec2 pos){
 	
-    FILE* level = fopen("../test/bin/test_map.bin", "rb"); /* open binary file */
+    FILE* level = fopen("../test/bin/level1_test.bin", "rb"); /* open binary file */
     if (!level) { /* check if file opened successfully */
         fprintf(stderr, "Error: Failed to open file.\n");
         return 0;
     }
-	int index = (pos.y + pos.x);
+	int index = ((pos.y/16)*40 + pos.x/16);//TODO: remove magic number(s)
 	fseek(level, (index * sizeof(int)) + sizeof(int), SEEK_SET);
-	int* tile = (int*)malloc(sizeof(int));
-   fread(tile, sizeof(int), 1, level); // read 1 tile from binary
+	int tile;// = (int*)malloc(sizeof(int));
+   fread(&tile, sizeof(int), 1, level); // read 1 tile from binary
 
 	fclose(level);
-	int val = *tile;
-	free(tile);
-	return val;
+	// int val = tile;
+	// free(tile);
+	return tile;
 }
 
 
@@ -25,8 +26,8 @@ void hh_draw_screen(vec_cor viewport){
 	if (viewport.x == previousViewport.x && viewport.y == previousViewport.y) return;
 	
 	hh_ppu_update_aux((hh_s_ppu_loc_aux){
-		.bg_shift_x = viewport.x*HH_PPU_SPRITE_WIDTH,
-		.bg_shift_y = viewport.y*HH_PPU_SPRITE_HEIGHT,
+		.bg_shift_x = viewport.x,
+		.bg_shift_y = viewport.y,
 		.fg_fetch	= 0,
 		.sysreset	= 0,
 	});
@@ -37,8 +38,8 @@ void hh_draw_screen(vec_cor viewport){
 
 void hh_setup_screen(){
 	//(HH_map_size_X*HH_map_size_Y)
-	int size = 3200; // max X = 40 en max Y = 80
-	FILE* level = fopen("../test/bin/test_map.bin", "rb"); /* open binary file */
+	int size = 2400; // max X = 40 en max Y = 80
+	FILE* level = fopen("../test/bin/level1_test.bin", "rb"); /* open binary file */
 	if (!level) { /* check if file opened successfully */
 		fprintf(stderr, "Error: Failed to open file.\n");
 		return;
@@ -53,7 +54,7 @@ void hh_setup_screen(){
 		hh_ppu_update_background(BAM_index, (hh_s_ppu_loc_bam_entry){
 			.horizontal_flip = false,
 			.vertical_flip   = false,
-			.palette_index   = tile[BAM_index]+1,
+			.palette_index   = hh_get_palette(tile[BAM_index]),
 			.tilemap_index   = tile[BAM_index],
 		});
 	}
diff --git a/src/engine/draw_screen.h b/src/engine/draw_screen.h
index 8d7df47..b181108 100644
--- a/src/engine/draw_screen.h
+++ b/src/engine/draw_screen.h
@@ -2,7 +2,7 @@
 
 
 // every function call for drawing the screen goes here.
-#include "../engine/maths.h"
+#include "engine/maths.h"
 #include "ppu/ppu.h"
 
 #include <stdio.h>
diff --git a/src/engine/engine.c b/src/engine/engine.c
index f3410a4..799ee7c 100644
--- a/src/engine/engine.c
+++ b/src/engine/engine.c
@@ -1,3 +1,4 @@
 #include "engine/draw_screen.h"
 #include "engine/level.h"
 #include "engine/maths.h"
+#include "engine/sprite_controller.h"
diff --git a/src/engine/entity.c b/src/engine/entity.c
new file mode 100644
index 0000000..153e7e1
--- /dev/null
+++ b/src/engine/entity.c
@@ -0,0 +1,46 @@
+#include <stdbool.h>
+
+#include "engine/entity.h"
+#include "engine/maths.h"
+
+/*
+    PLAYER: (pos on X)
+    ,___,
+    |   |
+    | X |
+    |___|
+
+*/
+
+bool hh_collision(vec_cor pos1, vec2 pos2){
+    if (pos2.x == CLAMP(pos2.x, pos1.x, pos1.x+16)){// hit x
+        return true;
+    }
+
+    if (pos2.y == CLAMP(pos2.y, pos1.y, pos1.y+16)){// hit y
+        return true;
+    }
+    return false;
+}
+
+void hh_solve_collision(vec2 pos_environment, hh_entity* entity){
+	if (!hh_collision(pos_environment,entity->pos))
+		return;
+
+	printf("BONK!/n");
+	// if (entity->vel.y > 0){
+	// 	entity->pos.y = MAX(entity->pos.y,pos_environment.y);
+	// 	entity->vel.y = 0;
+	// } else {
+	// 	entity->pos.y = MIN(entity->pos.y,pos_environment.y);
+	// 	entity->vel.y = 0;
+	// }
+	// if (entity->vel.x <= 0){
+	// 	entity->pos.x = MIN(entity->pos.x,pos_environment.x-16);
+	// 	entity->vel.x = 0;
+	// } else {
+	// 	entity->pos.x = MAX(entity->pos.x,pos_environment.x+16);
+	// 	entity->vel.x = 0;
+	// } 
+}
+
diff --git a/src/engine/entity.h b/src/engine/entity.h
new file mode 100644
index 0000000..f45dae2
--- /dev/null
+++ b/src/engine/entity.h
@@ -0,0 +1,57 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "ppu/types.h"
+
+#include "engine/maths.h"
+
+typedef uint8_t hh_idx_t;
+
+typedef enum {
+	fire, ice, poison
+}hh_e_damage_t;
+
+typedef struct {
+	hh_s_ppu_loc_fam_entry fam; //screen
+	hh_idx_t frame0;
+	hh_idx_t palette;
+	
+}hh_s_rendering;
+
+typedef struct {
+	int8_t hp;
+	int8_t dmg;
+	hh_e_damage_t dmg_type;
+	int8_t speed_x, speed_y;
+
+} hh_s_atributes;
+
+
+typedef struct {
+    vec2 pos, vel, vec;
+    bool is_grounded;
+    int8_t hp;
+    int8_t speed;
+	 hh_s_rendering render;
+    //armor/block?
+}hh_entity;
+
+typedef struct {
+	hh_entity p;
+	hh_s_atributes atr;
+}hh_s_player;
+
+
+/// @brief detect for collision enity and eviroment
+/// @param pos1 position of environment tile to be checked
+/// @param pos2 position entity
+/// @return true if collision between enity and environment
+bool hh_collision(vec2 pos1, vec2 pos2);
+
+/// @brief solve collisions
+/// @param environment position
+/// @param entity position
+/// @return solved new entity position
+void hh_solve_collision(vec2 pos_environment, hh_entity* entity);
diff --git a/src/engine/maths.c b/src/engine/maths.c
new file mode 100644
index 0000000..475bba2
--- /dev/null
+++ b/src/engine/maths.c
@@ -0,0 +1,19 @@
+#include "engine/maths.h"
+
+vec2 vec_add(vec2 a, vec2 b){
+	return (vec2){a.x + b.x, a.y + b.y};
+}
+
+vec_cor vec_cen2cor(vec_cen in, vec2 halfDistance){
+	return (vec_cor){
+		.x = in.x - halfDistance.x,
+		.y = in.y - halfDistance.y,
+	};
+}
+
+vec_cen vec_cor2cen(vec_cor in, vec2 halfDistance){
+	return (vec_cen){
+		.x = in.x + halfDistance.x,
+		.y = in.y + halfDistance.y,
+	};
+}
diff --git a/src/engine/maths.h b/src/engine/maths.h
index c7f1b44..bef287e 100644
--- a/src/engine/maths.h
+++ b/src/engine/maths.h
@@ -3,12 +3,17 @@
 // #include <math.h>
 
 typedef struct {
-    uint32_t x,y;
+	int32_t x,y;
 } vec2;
 
 typedef vec2 vec_cen;//centered
 typedef vec2 vec_cor;//left upper corner
 
+vec2 vec_add(vec2 a, vec2 b);
+
+vec_cor vec_cen2cor(vec_cen in, vec2 halfDistance);
+vec_cor vec_cor2cen(vec_cen in, vec2 halfDistance);
+
 //fixed point at decimal 7lsb (world positions in pixels (with fixed decimal point))
 #define HH_MATH_FIXED_POINT 7
 
diff --git a/src/engine/player_controller.c b/src/engine/player_controller.c
new file mode 100644
index 0000000..6735620
--- /dev/null
+++ b/src/engine/player_controller.c
@@ -0,0 +1,167 @@
+#include "ppu/types.h"
+#include "engine/camera.h"
+#include "engine/draw_screen.h"
+#include "engine/sprite_controller.h"
+#include "engine/player_controller.h"
+
+#include "demo.h"
+#include <stdio.h>
+
+#include "input.h"
+
+void hh_player_actions() {
+	static hh_entity player={
+		.hp = 4,
+		.speed = 6,
+		.is_grounded = false,
+		.pos = (vec2){32,32},
+		.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 = 2,
+			}
+		}
+	}, player_new = {0};
+
+	// hh_input_read();
+	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) };
+	// const int8_t maa = 3;
+	// const int8_t mbb = -3;
+	// if (g_hh_controller_p1.dpad_up)
+	//
+	// if (g_hh_controller_p1.dpad_down)
+	//
+	// if (g_hh_controller_p1.dpad_left) {
+	// 	player.vel.x += mbb;
+	// 	// g_hh_demo_balls[0].horizontal_flip = true;
+	// }
+	// if (g_hh_controller_p1.dpad_right) {
+	// 	player.vel.x += maa;
+	// 	// g_hh_demo_balls[0].horizontal_flip = true;
+	// }
+	// if (g_hh_controller_p1.button_primary /*&& player.is_grounded*/) //JUMP
+	// 	player.vel.y += -6;
+	// // // if (g_hh_controller_p1.button_secondary)
+
+	// player.render.fam.palette_index = 7;
+	// player.render.fam.tilemap_index = 7;
+
+	// printf("%x ",player.render.fam.palette_index);
+
+	// player.vel.y += 1; //gravity
+
+
+	//END OF VECTOR CHANGES
+	// player.vel.y = CLAMP(player.vel.y,-32,32);
+	// 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,
+	};
+
+
+
+	// const uint8_t empty = 0;
+	// hh_s_tiles tiles[9];
+	// const vec2 tile_offset[9] = {
+	// 	(vec2){-16,-16},(vec2){0,-16},(vec2){+16,-16},
+	// 	(vec2){-16,0},  (vec2){0,0},  (vec2){+16,0},
+	// 	(vec2){-16,+16},(vec2){0,+16},(vec2){+16,+16},
+	// };
+	// for (int i = 0; i < 9; i++) {
+	// 	vec2 temp_pos = vec_add(player.pos, tile_offset[i]);
+	// 	temp_pos =(vec2){
+	// 		.x = temp_pos.x,
+	// 		.y = temp_pos.y,
+	// 	};
+	// 	hh_s_tiles tile = {
+	// 		.pos = temp_pos,
+	// 		.idx = hh_world_to_tile(temp_pos)
+	// 	};
+	// 	if(hh_colidable(tile.idx)) {
+	// 		tiles[i]=tile;
+	// 		// printf(" collidable near!");
+	// 	} else {
+	// 		tiles[i].idx = 0;
+	// 	}
+	// }
+	/*
+	012
+	345
+	678
+	*/
+	// for (int i = 0; i < 9; i++)
+	// {
+	// 	if (tiles[i].idx != 0){
+	// 		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;
+
+	vec_cor cam_pos;//value in tiles
+	// cam_pos = (vec2){0,0};
+	cam_pos = hh_update_camera(player.pos,(vec2){0,0},(vec2){.x=20*16,.y=30*16});//TODO: remove magic number(s)
+	// printf("%i, %i:%i, %i\n",player.pos.x,player.pos.y,cam_pos.x,cam_pos.y);
+	hh_draw_screen(cam_pos);
+	// 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);
+
+
+	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_s_ppu_loc_fam_entry sprite = {
+		.position_x = 16,
+		.position_y = 16,
+		.palette_index = 7,
+		.tilemap_index = 2,
+	};
+	hh_ppu_update_foreground(1, sprite);
+
+}
+
diff --git a/src/engine/player_controller.h b/src/engine/player_controller.h
new file mode 100644
index 0000000..400c18e
--- /dev/null
+++ b/src/engine/player_controller.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include "engine/maths.h"
+#include "engine/entity.h"
+// inputs
+
+void hh_player_actions();
diff --git a/src/engine/sprite_controller.c b/src/engine/sprite_controller.c
new file mode 100644
index 0000000..5d93cf8
--- /dev/null
+++ b/src/engine/sprite_controller.c
@@ -0,0 +1,22 @@
+#include <stdint.h>
+
+#include "engine/sprite_controller.h"
+#include "ppu/types.h"
+#include "ppu/consts.h"
+#include "ppu/ppu.h"
+
+uint8_t hh_get_palette(uint8_t tile_idx) {
+	return hh_g_sprite_palette[tile_idx];
+}
+
+void hh_setup_palettes(){
+	for (int idx = 0; idx < HH_PPU_PALETTE_COUNT; idx++) {
+		for (int col = 0; col < HH_PPU_PALETTE_COLOR_COUNT; col++) {
+			hh_ppu_update_color(idx,col,hh_g_palette[idx][col]);
+		}
+	}	
+}
+
+bool hh_colidable(uint8_t tile_idx){
+	return (hh_get_palette(tile_idx) != 0);
+}
diff --git a/src/engine/sprite_controller.h b/src/engine/sprite_controller.h
new file mode 100644
index 0000000..001a459
--- /dev/null
+++ b/src/engine/sprite_controller.h
@@ -0,0 +1,106 @@
+#pragma once
+#include <stdint.h>
+
+#include "ppu/types.h"
+
+// handles sprites
+
+// Bg sprites
+
+// Fg or entity sprites
+
+//TODO: pack data inside of sprite_palette LUT
+//HH_PPU_PALETTE_COUNT
+#define HH_SPRITE_COUNT 40
+#define HH_PAL_IDX_SKY 0
+#define HH_PAL_IDX_BRICK 1
+const static uint8_t hh_g_sprite_palette[HH_SPRITE_COUNT] = {
+	0,1,1,1,1,1,1,1,1,1, //1+9
+	1,1,1,1,1,1,1,1,1,1, //6+4
+	1,1,1,1,1,1,1,1,1,	//9
+	7,7,7,2,7,7,1,2,7
+	//other palettes here:
+};
+
+
+const static hh_ppu_loc_palette_table_t hh_g_palette = {
+	{//palette info here
+		{0x1,0x2,0x3},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{//Bricks
+		{0x1,0x2,0x3},//01
+		{0xd,0x8,0xa},//24
+		{0x0,0x0,0x1},//25
+		{0x1,0x1,0x1},//26
+		{0x1,0x1,0x2},//27
+		{0x2,0x2,0x3},//28
+		{0x3,0x4,0x5},//29
+		{0x5,0x1,0x7}},
+	{//slime
+		{0x1,0x2,0x3},
+		{0x1,0x3,0x2},
+		{0x4,0x8,0x3},
+		{0x7,0xa,0x4},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0},
+		{0x0,0x0,0x0}},
+	{
+		{0x0,0xf,0xf},
+		{0xf,0xf,0xf},
+		{0xf,0x0,0xf},
+		{0xf,0xf,0x0},
+		{0xf,0x0,0x0},
+		{0x0,0xf,0x0},
+		{0x0,0x0,0xf},
+		{0x0,0x0,0x0}}
+};
+
+void hh_setup_palettes();
+
+/** @brief return palette index that belongs to tilemap index */
+uint8_t hh_get_palette(uint8_t tile_idx);
+
+bool hh_colidable(uint8_t tile_idx);
diff --git a/src/makefile b/src/makefile
index 96f3108..d7d9087 100644
--- a/src/makefile
+++ b/src/makefile
@@ -32,7 +32,12 @@ LOCAL_SRCS += main.c \
 							ppu/ppu.c \
 							demo.c \
 							engine/engine.c \
-							engine/draw_screen.c
+							engine/sprite_controller.c \
+							engine/player_controller.c \
+							engine/draw_screen.c \
+							engine/camera.c \
+							engine/maths.c \
+							engine/entity.c
 
 CFLAGS += $(SHARED_FLAGS)
 LFLAGS += $(SHARED_FLAGS)
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];
 }
diff --git a/src/ppusim/sim.c b/src/ppusim/sim.c
index 1fceb82..a5fec45 100644
--- a/src/ppusim/sim.c
+++ b/src/ppusim/sim.c
@@ -29,20 +29,21 @@ void hh_ppu_init() {
 }
 
 void hh_ppu_load_tilemap() {
-	char* filename = "tiles.bin";
+	char* filename = "../test/bin/tiles.bin";
 	FILE* fp = fopen(filename,"rb");
 	if (!fp){
+		fprintf(stderr,"Error: Failed to load tiles.");
 		return;//error
 	}
-
+	int sprite_size = (HH_PPU_SPRITE_WIDTH * HH_PPU_SPRITE_HEIGHT);
 	fseek(fp, 0, SEEK_END);//goto EOF
-	int _size = ftell(fp)/HH_PPU_VRAM_TMM_SPRITE_SIZE;
+	int _size = ftell(fp)/sprite_size;
 	fseek(fp, 0, 0);//goto start of file
 
 	for (int i = 0; i < _size; i++) {
-		uint8_t data[HH_PPU_VRAM_TMM_SPRITE_SIZE];
+		uint8_t data[sprite_size];
 
-		fread(data,HH_PPU_VRAM_TMM_SPRITE_SIZE,1,fp);
+		fread(data,sizeof(uint8_t),sprite_size,fp);
 		
 		hh_s_ppu_vram_data sprite = hh_ppu_2nat_sprite(data);
 		sprite.offset = i*HH_PPU_VRAM_TMM_SPRITE_SIZE;