Car and pathfinding implementation setup

src/common/constants.odin

@@ -16,7 +16,7 @@ NODE_RADIUS		 :: 20
 // Size of designated radius that determines when position is within node's 'sphere'
 NODE_SNAP_RADIUS :: 3 * NODE_RADIUS
 // Default text size
-TEXT_SIZE		 :: 50
+TEXT_SIZE		 :: 35
 
 // Default road colour
 ROAD_COLOUR		      :: rl.BLACK

src/draw.odin

@@ -73,6 +73,6 @@ draw_temp_road :: proc(self: ^Simulator, pos: rl.Vector2) {
 // Drawing UI text, mostly for debugging purposes
 @(private="file")
 draw_ui :: proc(self: ^Simulator) {
-	entity_count := fmt.ctprintf("Nodes: %d\nRoads: %d", len(self.nodes), len(self.roads))
-	rl.DrawText(entity_count, i32(common.WIDTH - 13 * len(entity_count)), common.HEIGHT - 2 * common.TEXT_SIZE, common.TEXT_SIZE, common.TEXT_COLOUR)
+	entity_count := fmt.ctprintf("Nodes: %d, Roads: %d, Cars: %d", len(self.nodes), len(self.roads), len(self.cars))
+	rl.DrawText(entity_count, i32(len(entity_count)), common.HEIGHT - common.TEXT_SIZE, common.TEXT_SIZE, common.TEXT_COLOUR)
 }

src/infrastructure/node.odin

@@ -59,3 +59,8 @@ node_update_road_reference :: proc(self: ^Node, old_ref: u32, new_ref: u32) -> b
 	
 	return false
 }
+
+// Returns whether this node is final
+node_is_end :: proc(self: ^Node) -> bool {
+	return len(self.roads) == 1
+}

src/infrastructure_helpers.odin

@@ -96,3 +96,8 @@ delete_entity :: proc(self: ^Simulator, entity_index: u32, type: common.Entity)
 	
 	return {}, false
 }
+
+// Returns a random node that has no cars on it
+get_free_node :: proc(self: ^Simulator) -> u32 {
+	
+}

src/input.odin

@@ -20,6 +20,7 @@ handle_keyboard_input :: proc(self: ^Simulator) {
 
 	if rl.IsKeyReleased(.C) {
 		self.temp_node = nil
+		clear(&self.cars)
 		clear(&self.roads)
 		clear(&self.nodes)
 	}

src/simulator.odin

@@ -28,16 +28,16 @@ Simulator :: struct {
 
 // Destructor
 deinit :: proc(self: ^Simulator) {
+	delete(self.cars)
+	
 	self.temp_node = nil
 	self.highlighted_road = nil
 	
 	delete(self.roads)
-	
 	for &node in self.nodes {
 		inf.node_deinit(&node)
 	}
 	delete(self.nodes)
-	delete(self.cars)
 }
 
 // Functionality that runs every tick regardless of input

src/system/pathfinding.odin

@@ -0,0 +1,11 @@
+package system
+
+import inf "../infrastructure"
+
+get_path_to_destination :: proc(source: u32, destination: u32, nodes: []inf.Node) {
+	source_node := nodes[source]
+	destination_node := nodes[destination]
+	
+	
+}
+

src/vehicles/car.odin

@@ -1,8 +1,10 @@
 package vehicles
 
 import "core:math/rand"
+import rl "vendor:raylib"
 
 import "../common"
+import inf "../infrastructure"
 
 Car :: struct {
 	// Fuel level 0-100%
@@ -16,14 +18,22 @@ Car :: struct {
 	origin: u32,
 	// Car's destination node
 	destination: Maybe(u32),
+	// Tracks on which node car has been last
+	node_pos: u32,
+	road_pos: Maybe(u32),
+	actual_pos: rl.Vector2,
 }
 
 // Constructor
-car_init :: proc(nodes_len: u32) -> Car {
+car_init :: proc(nodes: []inf.Node) -> Car {
+	rand_origin := rand.uint32_max(nodes_len)
+	
 	return {
 		fuel_level = common.FUEL_MAX,
 		max_speed = common.CAR_MAX_SPEED,
-		origin = rand.uint32_max(nodes_len)
+		origin = rand_origin,
+		node_pos = rand_origin,
+		actual_pos = 
 	}
 }