Add line collision checking to geom2d functions.

Crawler/Crawler.cpp

@@ -831,13 +831,10 @@ void Crawler::LoadLevel(MapName map){
 					int tileSheetY=tileSheetIndex/tileSheetWidth;
 					if(IsForegroundTile(tileSheet,tileSheetIndex)){
 						TileRenderData tile={tileSheet.tileset.tileset->Decal(),vi2d{x,y}*24,vi2d{tileSheetX,tileSheetY}*24};
-						std::cout<<"Tile "<<vi2d{x,y}<<" w/Tile ID "<<tileSheetIndex<<" is foreground tile."<<std::endl;
 						bool foundGroup=false;
 						for(TileGroup&group:foregroundTileGroups){
 							if(geom2d::overlaps(geom2d::rect<int>{vi2d{x,y}*24-vi2d{1,1},{26,26}},group.GetRange())){
-								std::cout<<" Group found: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
 								group.InsertTile(tile);
-								std::cout<<"  After: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
 								foundGroup=true;
 								break;
 							}
@@ -845,7 +842,6 @@ void Crawler::LoadLevel(MapName map){
 						if(!foundGroup){
 							TileGroup group;
 							group.InsertTile(tile);
-							std::cout<<" No Group found. New group: "<<group.GetRange().pos<<"/"<<group.GetRange().size<<std::endl;
 							foregroundTileGroups.push_back(group);
 						}
 					}

Crawler/Monster.cpp

@@ -90,6 +90,9 @@ void Monster::PerformJumpAnimation(){
 		case SLIME_RED:{
 			animation.ChangeState(internal_animState,AnimationState::RED_SLIME_JUMP);
 		}break;
+		case SLIME_YELLOW:{
+			animation.ChangeState(internal_animState,AnimationState::YELLOW_SLIME_JUMP);
+		}break;
 	}
 }
 void Monster::PerformShootAnimation(){
@@ -103,6 +106,9 @@ void Monster::PerformShootAnimation(){
 	case SLIME_RED:{
 		animation.ChangeState(internal_animState,AnimationState::RED_SLIME_SPIT);
 	}break;
+	case SLIME_YELLOW:{
+		animation.ChangeState(internal_animState,AnimationState::YELLOW_SLIME_SPIT);
+	}break;
 	}
 }
 void Monster::SetX(float x){

Crawler/Version.h

@@ -2,7 +2,7 @@
 #define VERSION_MAJOR 0
 #define VERSION_MINOR 2
 #define VERSION_PATCH 0
-#define VERSION_BUILD 217
+#define VERSION_BUILD 221
 
 #define stringify(a) stringify_(a)
 #define stringify_(a) #a

Crawler/olcUTIL_Geometry2D.h

@@ -585,8 +585,9 @@ namespace olc::utils::geom2d
 	template<typename T1, typename T2>
 	inline constexpr bool overlaps(const line<T1>& l1, const line<T2>& l2)
 	{
-		// TODO: 
-		return false;
+		float uA = ((l2.end.x-l2.start.x)*(l1.start.y-l2.start.y) - (l2.end.y-l2.start.y)*(l1.start.x-l2.start.x)) / ((l2.end.y-l2.start.y)*(l1.end.x-l1.start.x) - (l2.end.x-l2.start.x)*(l1.end.y-l1.start.y));
+		float uB = ((l1.end.x-l1.start.x)*(l1.start.y-l2.start.y) - (l1.end.y-l1.start.y)*(l1.start.x-l2.start.x)) / ((l2.end.y-l2.start.y)*(l1.end.x-l1.start.x) - (l2.end.x-l2.start.x)*(l1.end.y-l1.start.y));
+		return uA >= 0 && uA <= 1 && uB >= 0 && uB <= 1;
 	}
 
 	// Check if rectangle overlaps line segment
@@ -633,7 +634,14 @@ namespace olc::utils::geom2d
 	template<typename T1, typename T2>
 	inline std::vector<olc::v2d_generic<T2>> intersects(const line<T1>& l1, const line<T2>& l2)
 	{
-		// TODO:
+		float uA = ((l2.end.x-l2.start.x)*(l1.start.y-l2.start.y) - (l2.end.y-l2.start.y)*(l1.start.x-l2.start.x)) / ((l2.end.y-l2.start.y)*(l1.end.x-l1.start.x) - (l2.end.x-l2.start.x)*(l1.end.y-l1.start.y));
+		float uB = ((l1.end.x-l1.start.x)*(l1.start.y-l2.start.y) - (l1.end.y-l1.start.y)*(l1.start.x-l2.start.x)) / ((l2.end.y-l2.start.y)*(l1.end.x-l1.start.x) - (l2.end.x-l2.start.x)*(l1.end.y-l1.start.y));
+
+		if (uA >= 0 && uA <= 1 && uB >= 0 && uB <= 1) {
+			float intersectionX = l1.start.x + (uA * (l1.end.x-l1.start.x));
+			float intersectionY = l1.start.y + (uA * (l1.end.y-l1.start.y));
+			return {{intersectionX,intersectionY}};
+		}
 		return {};
 	}