Wall collisions

src/main.cpp

@@ -11,8 +11,10 @@ int main() {
 
 	SetTargetFPS(60);
 	
-	world = create_world_with(1./10.);
+	create_world_with(1./10.);
 	
+	World& world = get_world();
+
 	loadmap(world);
 
 	world.setup();

src/pacman.cpp

@@ -1,6 +1,7 @@
 #include <raylib.h>
 #include <raymath.h>
 #include "components.h"
+#include "world.h"
 
 // Pacman definitions
 
@@ -37,7 +38,11 @@ void Pacman::tick() {
 	// Movement in direction
 	double angle = PI/2.0*facing;
 	Vector2 direction = {(float)(cos(angle)),(float)(sin(-angle))};
-	this->position = Vector2Add(this->position,Vector2Scale(direction, (float)speed)); 
+	Vector2 new_position = Vector2Add(this->position,Vector2Scale(direction, (float)speed)); 
+	
+	if (get_world().grid[indexify_position(new_position)] == nullptr){
+		this->position=new_position;
+	}
 
 	// Bound check
 	if (this->position.x < 0){

src/world.cpp

@@ -1,5 +1,7 @@
 #include "world.h"
+#include "components.h"
 #include <raylib.h>
+#include <string>
 
 World::World(){
 	this->entities = {};
@@ -50,8 +52,27 @@ void World::draw() const {
 
 	DrawText(TextFormat("entities: %i",this->entities.size()), 0, 0, 14, WHITE);
 	DrawText(TextFormat("seconds_per_tick: %f",this->seconds_per_tick), 0, 16, 14, WHITE);
+	if (IsKeyDown(KEY_F4))
+	{
+		std::string str = "";
+		for(int i = 0; i < GRID_CAPACITY; i++)
+		{
+			if (i!=0 && i%GRID_COLUMNS==0)
+			{
+				str += '\n';
+			}
+			if (dynamic_cast<Wall*>(grid[i]))
+					str += '#';
+			else if (dynamic_cast<Pacman*>(grid[i]))
+				str += 'P';
+			else
+				str += ' ';
+		}
+		DrawText(str.c_str(), 32, 0, 14, WHITE);
+	}
 }
 
+
 int indexify_position(Vector2 vector){
 	return (int)(vector.x / 16.0) + GRID_COLUMNS * (int)(vector.y / 16.0);
 }
@@ -71,10 +92,11 @@ void World::update_grid() {
 
 
 
-World create_world_with(float seconds_per_tick){
-	World result = World();
-	
-	result.seconds_per_tick = seconds_per_tick;
-
-	return result;
+void create_world_with(float seconds_per_tick){
+	get_world().seconds_per_tick = seconds_per_tick;
+}
+
+World& get_world() {
+	static World world;
+	return world;
 }

src/world.h

@@ -1,7 +1,9 @@
 #ifndef WORLD_H
+
 #define WORLD_H
 
 #include "components.h"
+#include <string>
 #include <vector>
 
 const int GRID_ROWS = 20;
@@ -31,9 +33,8 @@ class World {
 		void update_grid();
 };
 
-static World world; /// World singleton
-
-World create_world_with(float seconds_per_tick);
+void create_world_with(float seconds_per_tick);
+World& get_world(); // Thanks, 2ndbeam, helps a lot
 int indexify_position(Vector2 vector);
 
 #endif