From d08f9e82d51b984a9402aedc87ae3b730c02b041 Mon Sep 17 00:00:00 2001
From: beppe <beppe.vanrolleghem@gmail.com>
Date: Thu, 14 Oct 2021 15:20:38 +0200
Subject: [PATCH] trying to get a "character" in the engine

---
 main.lua | 39 ++++++++++++++++++++++++++++-----------
 1 file changed, 28 insertions(+), 11 deletions(-)

diff --git a/main.lua b/main.lua
index 79d052d..d41bd28 100644
--- a/main.lua
+++ b/main.lua
@@ -1,5 +1,5 @@
-LOGLEVEL = 2
-
+LOGLEVEL = 0
+HC = require 'lib/HC'
 
 
 -- severity levels:
@@ -13,13 +13,14 @@ local pixelcode = [[
 	extern number h;
 	extern number lum;
 	extern vec2 mouse;
+	extern vec2 player;
 	vec4 effect( vec4 color, Image tex, vec2 texture_coords, vec2 screen_coords )
 	{
 		float r = screen_coords.x/w;
 		float g = screen_coords.y/h;
-		float b = (r + g) / 2;
-		float a = 1 - distance(screen_coords, mouse)/ (lum) ;
-		color = vec4(r, g, b, a+0.5);
+		float b = 1 - distance(screen_coords, mouse)/ (lum) ;
+		float a = 1 - distance(screen_coords, player)/ (lum) ;
+		color = vec4(r, g, b, a+1);
 		return Texel(tex, texture_coords) * color;
 	}
 ]]
@@ -50,22 +51,24 @@ end
 function love.load()
 
 	shader = love.graphics.newShader(pixelcode, vertexcode)
-	
+	world = love.physics.newWorld( 0, 0, true )
 	h = love.graphics.getHeight( )
 	w = love.graphics.getWidth( )
+	player = love.physics.newBody( world, 500, 500, "dynamic")
+	circle = HC.circle(400,300,20)
 end
 
 
 function love.update(dt)
 	t = t + dt
 	mouse_x, mouse_y = love.mouse.getPosition( )
-	log("mouse x " .. mouse_x)
-	log("mouse y " .. mouse_y)
+	player_x, player_y = mouse_x, mouse_y
+	--player:applyForce()
 	shader:send("w", w)
 	shader:send("h", h)
 	shader:send("mouse", {mouse_x, mouse_y})
+	shader:send("player", {player_x, player_y})
 	shader:send("lum", lum)
-	log("dt = " .. dt)
 	if love.keyboard.isDown('space') then
 		lum = lum + 1
 	elseif love.keyboard.isDown('rctrl') then
@@ -75,13 +78,27 @@ function love.update(dt)
   	end
 end
 
+function getAngle(x1, y1, x2, y2)
+	return math.atan2(y2 - y1, x2 - x1) * 180 / math.pi
+end
+
+function drawPlayer()
+	x, y = player:getPosition( )
+	angle = getAngle(x, y, mouse_x, mouse_y)
+	love.graphics.print( angle, 0, 0, 0, 1, 1, 0, 0, 0, 0 )
+	player:setAngle(angle)
+	player:applyForce(100, 100)
+	log(player:getAngularVelocity())
+
+	love.graphics.circle( "fill", x, y, 5 )
+end
+
 
 function love.draw(dt)
 	love.graphics.setShader(shader)
     love.graphics.rectangle("fill", 0, 0, w, h)
 	love.graphics.setShader()
-    love.graphics.rectangle("fill", 400, 400, 100, 100)
-
+    drawPlayer()
 end