initial attempt to add a visual food low warning (consumable falls to 25% and balance is ticking down)

source/glest_game/graphics/renderer.cpp

@@ -1605,16 +1605,35 @@ void Renderer::renderResourceStatus() {
 
 		//draw resource status
 		if(showResource) {
-
 			string str= intToStr(r->getAmount());
 
 			glEnable(GL_TEXTURE_2D);
+
+			Vec4f resourceFontColor = fontColor;
+
+			bool isNegativeConsumableDisplayCycle = false;
+			if(rt->getClass() == rcConsumable) {
+				// Show in red font if negative
+				const double minWarnPercent = 25.0;
+				//if(r->getBalance() < 0) {
+				if(r->getBalance() < 0 &&
+					((thisFaction->getStoreAmount(rt) > 0 && (double)r->getAmount() / (double)thisFaction->getStoreAmount(rt) * 100.0 <= minWarnPercent) ||
+					 (thisFaction->getStoreAmount(rt) <= 0 && (double)r->getAmount() <= minWarnPercent))) {
+					if(time(NULL) % 2 == 0) {
+						isNegativeConsumableDisplayCycle = true;
+						glColor3f(RED.x,RED.y,RED.z);
+						resourceFontColor = RED;
+					}
+					//printf("Balance is negative!");
+				}
+			}
+			if(isNegativeConsumableDisplayCycle == false) {
 				glColor3f(1.f, 1.f, 1.f);
+			}
 
 			renderQuad(j*100+200, metrics.getVirtualH()-30, 16, 16, rt->getImage());
 
-			if(rt->getClass() != rcStatic)
+			if(rt->getClass() != rcStatic) {
-			{
 				str+= "/" + intToStr(thisFaction->getStoreAmount(rt));
 			}
 			if(rt->getClass() == rcConsumable) {
@@ -1630,18 +1649,17 @@ void Renderer::renderResourceStatus() {
 			if(renderText3DEnabled == true) {
 				renderTextShadow3D(
 					str, CoreData::getInstance().getDisplayFontSmall3D(),
-					fontColor,
+					resourceFontColor,
 					j*100+220, metrics.getVirtualH()-30, false);
 			}
 			else {
 				renderTextShadow(
 					str, CoreData::getInstance().getDisplayFontSmall(),
-					fontColor,
+					resourceFontColor,
 					j*100+220, metrics.getVirtualH()-30, false);
 			}
 			++j;
 		}
-
 	}
 
 	glPopAttrib();

source/shared_lib/include/graphics/vec.h

@@ -407,6 +407,13 @@ public:
 	Vec4() {
 	};
 
+	explicit Vec4(const T *p){
+		this->x= p[0];
+		this->y= p[1];
+		this->z= p[2];
+		this->w= p[3];
+	}
+
 	explicit Vec4(T *p){
 		this->x= p[0];
 		this->y= p[1];