renderable grid that doesn't crash

1 files changed, 120 insertions, 7 deletions

diff --git a/src/render.c b/src/render.c
index 9203ece..d4734c6 100644
--- a/src/render.c
+++ b/src/render.c
@@ -2,6 +2,113 @@
 #include "rlgl.h"
 
 void
+drawLine(Vector3 start, Vector3 end, float width, int up, Color color)
+{
+	start.x *= 100;
+	start.y *= 100;
+	start.z *= 100;
+	end.x *= 100;
+	end.y *= 100;
+	end.z *= 100;
+	width *= 2;
+	// 2 is z up for some reason /shrug
+	int ox = 0;
+	int oy = 0;
+	int oz = 0;
+
+	if(up == 1)
+	{
+		ox = (width / 2);
+	}
+	else if(up == 2)
+	{
+		oy = (width / 2);
+	}
+	else if(up == 3)
+	{
+		oz = (width / 2);
+	}
+	else if(up == -1)
+	{
+		ox = -(width / 2);
+	}
+	else if(up == -2)
+	{
+		oy = -(width / 2);
+	}
+	else if(up == -3)
+	{
+		oz = -(width / 2);
+	}
+
+
+	Vector3 points[4] = {
+		(Vector3){ (start.x + ox) * 1, (start.y + oy) * 1, (start.z + oz) * 1 },
+		(Vector3){ (start.x - ox) * 1, (start.y - oy) * 1, (start.z - oz) * 1 },
+		(Vector3){ (end.x + ox) * 1, (end.y + oy) * 1, (end.z + oz) * 1 },
+		(Vector3){ (end.x - ox) * 1, (end.y - oy) * 1, (end.z - oz) * 1 },
+	};
+
+	//Vector3 points[4] = {
+	//	(Vector3){ 0, 0, 0 },
+	//	(Vector3){ 10, 0, 0 },
+	//	(Vector3){ 0, 10, 0 },
+	//	(Vector3){ 10, 10, 0 },
+	//};
+	rlPushMatrix();
+	rlScalef(0.01, 0.01, 0.01);
+	DrawTriangleStrip3D(points, 4, color);
+	rlPopMatrix();
+}
+
+void
+drawGrid(Vector3 position, int lines, int size, Color color)
+{
+	position.x -= lines * size / 2;
+	position.y -= lines * size / 2;
+	for(int i = 0; i < lines + 1; ++i)
+	{
+		float mx = position.x;
+		float my = position.y + (i * size);
+		float mz = position.z;
+		drawLine(
+				(Vector3){
+				mx,
+				my,
+				mz
+				},
+				(Vector3){
+				mx + (size * lines),
+				my,
+				mz
+				},
+				4.0f,
+				2,
+				BLACK);
+	}
+	for(int i = 0; i < lines + 1; ++i)
+	{
+		float mx = position.x + (i * size);
+		float my = position.y;
+		float mz = position.z;
+		drawLine(
+				(Vector3){
+				mx,
+				my,
+				mz
+				},
+				(Vector3){
+				mx,
+				my + (size * lines),
+				mz
+				},
+				4.0f,
+				-1,
+				BLACK);
+	}
+}
+
+void
 renderWorld(World* world, Camera camera)
 {
 	//Vector3 lookat = camera.target;
@@ -19,16 +126,22 @@ renderWorld(World* world, Camera camera)
 	drawPlayer(&world->players[0]);
 	drawPlayer(&world->players[1]);
 
-	for(int i = 0; i <= 3; ++i){
+	//drawGrid((Vector3){0}, 10, 1);
+
+	for(int i = -3; i <= 3; ++i){
 		DrawCube((Vector3){i,3,3}, 0.5f, 0.5f, 0.5f, YELLOW);
 		DrawCube((Vector3){i,4,3}, 0.5f, 0.5f, 0.5f, DARKPURPLE);
-		DrawCube((Vector3){i,5,3}, 0.5f, 0.5f, 0.5f, YELLOW);
-		DrawCube((Vector3){i,3,4}, 0.5f, 0.5f, 0.5f, MAGENTA);
-		DrawCube((Vector3){i,4,4}, 0.5f, 0.5f, 0.5f, GREEN);
-		DrawCube((Vector3){i,5,4}, 0.5f, 0.5f, 0.5f, MAGENTA);
-		//DrawLineV((Vector2){i, -3}, (Vector2){i, 3}, BLACK);
-		//DrawLineV((Vector2){-3, i}, (Vector2){3, i}, BLACK);
+		//DrawCube((Vector3){i,5,3}, 0.5f, 0.5f, 0.5f, YELLOW);
+		//DrawCube((Vector3){i,3,4}, 0.5f, 0.5f, 0.5f, MAGENTA);
+		//DrawCube((Vector3){i,4,4}, 0.5f, 0.5f, 0.5f, GREEN);
+		//DrawCube((Vector3){i,5,4}, 0.5f, 0.5f, 0.5f, MAGENTA);
+		//DrawLineEx((Vector2){i, 3},(Vector2){i, -3},  5, BLACK);
+		//DrawLineEx((Vector2){3, i},(Vector2){-3, i},  5, BLACK);
 	}
+	//drawLine((Vector3){0}, (Vector3){10,0,0}, 2.0f, 2, BLACK);
+
+	drawGrid((Vector3){0}, 10, 1, BLACK);
+
 	//rlPopMatrix();
 	EndMode3D();
 }