package main

import "core:fmt"
import "ecs"
import rl "vendor:raylib"

World :: struct {
	entities: map[rl.Vector2]Entity,
}

world: World
player: Player
enemy: Enemy
camera: rl.Camera2D
CELL_SIZE :: 20

main :: proc() {
	ecs.ping()
	fmt.println("hello world")
	rl.InitWindow(800, 600, "grimm gameplay prototype")
	defer rl.CloseWindow()

	player = Player {
		transform = Transform{position = {4, 8}},
		camera = rl.Camera2D{target = {0, 0}, zoom = 1.5},
	}
	world.entities[player.transform.position] = player
	enemy = Enemy {
		transform = Transform{position = {8, 8}},
	}
	world.entities[enemy.transform.position] = enemy

	for !rl.WindowShouldClose() {
		update()
		rl.BeginDrawing()
		rl.ClearBackground(rl.PURPLE)
		rl.BeginMode2D(player.camera)
		draw()
		rl.EndMode2D()
		rl.EndDrawing()
	}
}

update :: proc() {
	if rl.IsKeyPressed(rl.KeyboardKey.W) {
		move(&player.transform, 0, -1)
	}
	if rl.IsKeyPressed(rl.KeyboardKey.A) {
		move(&player.transform, -1, 0)
	}
	if rl.IsKeyPressed(rl.KeyboardKey.S) {
		move(&player.transform, 0, 1)
	}
	if rl.IsKeyPressed(rl.KeyboardKey.D) {
		move(&player.transform, 1, 0)
	}

	if rl.IsKeyPressed(rl.KeyboardKey.SPACE) {
		move(&enemy.transform, 1, 0)
	}

}

draw :: proc() {
	rl.DrawRectangle(
		i32(player.transform.position.x * CELL_SIZE),
		i32(player.transform.position.y * CELL_SIZE),
		CELL_SIZE,
		CELL_SIZE,
		rl.WHITE,
	)
	rl.DrawRectangle(
		i32(enemy.transform.position.x * CELL_SIZE),
		i32(enemy.transform.position.y * CELL_SIZE),
		CELL_SIZE,
		CELL_SIZE,
		rl.BLUE,
	)


	for x in 0 ..< 26 {
		for y in 0 ..< 26 {
			rl.DrawRectangleLines(
				i32(x) * CELL_SIZE,
				i32(y) * CELL_SIZE,
				CELL_SIZE,
				CELL_SIZE,
				rl.BLANK,
			)
		}
	}

	if rl.IsMouseButtonDown(rl.MouseButton.LEFT) {
		pos := rl.GetScreenToWorld2D(rl.GetMousePosition(), player.camera)
		pos_x := int(pos.x / CELL_SIZE) * CELL_SIZE
		pos_y := int(pos.y / CELL_SIZE) * CELL_SIZE
		shoot({f32(pos_x), f32(pos_y)}, player.transform)
	}

}