From 866af1f3a0d3c3371906f90fac8cdf5231df5e42 Mon Sep 17 00:00:00 2001
From: cinnaboot <cinnaboot@protonmail.com>
Date: Tue, 15 Jan 2019 18:59:09 -0500
Subject: [PATCH] add/remove painting

---
 src/hexgame.cpp | 46 ++++++++++++++++++++++++++++++----------------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/src/hexgame.cpp b/src/hexgame.cpp
index 2ba4f9c..3e05bca 100644
--- a/src/hexgame.cpp
+++ b/src/hexgame.cpp
@@ -153,14 +153,6 @@ mapMouseToViewport(int32 x, int32 y)
 	return coords;
 }
 
-void
-setStartHex(hex_info *hex)
-{
-	hex->selected = true;
-	g_game_state->grid.start_hex = g_game_state->grid.current_hex = hex;
-	g_game_state->grid.is_selecting = true;
-}
-
 void
 startDrawHelper(int32 x, int32 y)
 {
@@ -168,8 +160,10 @@ startDrawHelper(int32 x, int32 y)
 	v2i dims = g_render_state->viewport_dims;
 	v2f v = cameraUnproject(g_render_state->cam, x, y, dims.x, dims.y);
 	hex_info *hex = hgGetSingleHex(g_game_state->grid, v.x, v.y);
-	if (hex)
-		setStartHex(hex);
+	if (hex) {
+		hex->selected = true;
+		g_game_state->grid.start_hex = g_game_state->grid.current_hex = hex;
+	}
 }
 
 void
@@ -223,22 +217,42 @@ handleMouseDown(SDL_MouseButtonEvent &e)
 void
 handleMouseMove(SDL_MouseMotionEvent &e)
 {
+	game_state* gs = g_game_state;
+	render_state* rs = g_render_state;
 	v2i coords = mapMouseToViewport(e.x, e.y);
-	v2i dims = g_render_state->viewport_dims;
-	v2f v = cameraUnproject(g_render_state->cam, coords.x, coords.y, dims.x, dims.y);
+	v2i dims = rs->viewport_dims;
+	v2f v = cameraUnproject(rs->cam, coords.x, coords.y, dims.x, dims.y);
 
-	switch (g_game_state->grid.draw_mode) {
+	switch (gs->grid.draw_mode) {
 		case FILL:
-			hgUpdateHexFill(g_game_state->grid, v.x, v.y);
+			hgUpdateHexFill(gs->grid, v.x, v.y);
 			break;
 		case LINE:
-			hgUpdateHexLineDraw(g_game_state->grid, v.x, v.y);
+			hgUpdateHexLineDraw(gs->grid, v.x, v.y);
 			break;
 		case CONE_FILL:
-			hgUpdateHexConeFill(g_game_state->grid, v.x, v.y, CONE_ANGLE, g_polygon_select_vertices);
+			hgUpdateHexConeFill(gs->grid, v.x, v.y, CONE_ANGLE, g_polygon_select_vertices);
 			break;
 		case PATHFINDING:
 			break;
+		case ADD_HEXES: {
+			if (gs->grid.is_selecting) {
+				v3f ray = cameraCreateRay(rs->cam, coords, dims);
+				v3f xsect;
+				if (cameraIntersectPlane(rs->cam, ray, gs->grid.position, gs->grid.normal, xsect))
+					hgAddHex(gs->grid, xsect, rs->filled_hex_render_group, rs->hex_line_render_group);
+			}
+			break;
+		}
+		case REMOVE_HEXES: {
+			if (gs->grid.is_selecting) {
+				v3f ray = cameraCreateRay(rs->cam, coords, dims);
+				v3f xsect;
+				if (cameraIntersectPlane(rs->cam, ray, gs->grid.position, gs->grid.normal, xsect))
+					hgRemoveHex(gs->grid, xsect, rs->filled_hex_render_group, rs->hex_line_render_group);
+			}
+			break;
+		}
 		case NONE:
 		default:
 			break;