From bc403da11b441aee651782ceac72314720fc228d Mon Sep 17 00:00:00 2001
From: xolatile <xolatile@proton.me>
Date: Fri, 22 Dec 2023 02:09:39 -0500
Subject: [PATCH] Added map scrolling and camera...

---
 source/engine.c | 14 ++++++++------
 source/engine.h |  5 ++++-
 source/game.h   |  2 ++
 source/main.c   | 33 +++++++++++++++++++++++++++------
 4 files changed, 41 insertions(+), 13 deletions(-)

diff --git a/source/engine.c b/source/engine.c
index 0e758b0..b4a7e7e 100644
--- a/source/engine.c
+++ b/source/engine.c
@@ -1,5 +1,8 @@
 #include "engine.h"
 
+int camera_x = 30;
+int camera_y = 30;
+
 void view_unit (int race, int unit, int x, int y) {
 	int u, v, width, height;
 
@@ -100,14 +103,13 @@ void view_neon_menu (int menu, int align, int x, int y) {
 	}
 }
 
-void view_map (void) {
+void view_map (int offset_x, int offset_y) {
 	int x, y;
 
-	for (x = 0; x < CHAD_WORLD_WIDTH; ++x) {
-		if (x * BASE_SIZE * render_zoom > render_width () - SIDE_SIZE) break;
-
-		for (y = 0; y < CHAD_WORLD_HEIGHT; ++y) {
-			render_sprite (ashlands, (int) (x * BASE_SIZE * render_zoom), (int) (y * BASE_SIZE * render_zoom), 0, chad_world [0] [x] [y] * BASE_SIZE, BASE_SIZE, BASE_SIZE);
+	for (x = 0; x < (render_width () - SIDE_SIZE) / (BASE_SIZE * render_zoom); ++x) {
+		for (y = 0; y < render_height () / (BASE_SIZE * render_zoom); ++y) {
+			render_sprite (ashlands, (int) (x * BASE_SIZE * render_zoom), (int) (y * BASE_SIZE * render_zoom), 0,
+				chad_world [0] [offset_x + x] [offset_y + y] * BASE_SIZE, BASE_SIZE, BASE_SIZE);
 		}
 	}
 }
diff --git a/source/engine.h b/source/engine.h
index 460dded..d92b918 100644
--- a/source/engine.h
+++ b/source/engine.h
@@ -7,6 +7,9 @@
 
 #include <string.h>
 
+extern int camera_x;
+extern int camera_y;
+
 extern void view_unit (int race, int unit, int x, int y);
 
 extern void view_menu (int menu, int align, int x, int y);
@@ -15,7 +18,7 @@ extern void view_hud (int alpha, int width, int height, int x, int y);
 
 extern void view_neon_menu (int menu, int align, int x, int y);
 
-extern void view_map (void);
+extern void view_map (int offset_x, int offset_y);
 
 extern void view_base_1 (int index, int x, int y);
 extern void view_base_2 (int index, int x, int y);
diff --git a/source/game.h b/source/game.h
index b8683d6..14d4160 100644
--- a/source/game.h
+++ b/source/game.h
@@ -12,8 +12,10 @@
 #define CHAD_UNIT_LIMIT   (54)
 #define CHAD_HERO_LIMIT   ( 1)
 #define CHAD_BLOCK_LIMIT  (28)
+#define CHAD_MODEL_LIMIT  (72)
 #define CHAD_WORLD_LIMIT  ( 1)
 
+#define CHAD_WORLD_MODEL  (120)
 #define CHAD_WORLD_WIDTH  (120)
 #define CHAD_WORLD_HEIGHT ( 60)
 
diff --git a/source/main.c b/source/main.c
index 2aa2e19..183a3b3 100644
--- a/source/main.c
+++ b/source/main.c
@@ -3,6 +3,22 @@
 #include "engine.h"
 #include "menu.h"
 
+#include <stdio.h>
+
+extern int snprintf (char *, unsigned long, const char *, ...);
+
+static void limit (int * pointer, int minimum, int maximum) {
+	if ((* pointer >= minimum) && (* pointer <= maximum)) { return; }
+	if (* pointer < minimum) { * pointer = minimum; }
+	if (* pointer > maximum) { * pointer = maximum; }
+}
+
+static void debug (void) {
+	char string [64] = "";
+	snprintf (string, 64, "%i -- %i", camera_x, camera_y);
+	render_string (string, 0, 0);
+}
+
 int main (void) {
 	game_configure ();
 
@@ -17,7 +33,7 @@ int main (void) {
 
 		ClearBackground (tint);
 
-		view_map ();
+		view_map (camera_x, camera_y);
 
 		view_base_1 (0, 32, 128);
 		view_base_1 (1, 32, 512);
@@ -31,14 +47,19 @@ int main (void) {
 			view_unit (elf,   i, 900 + 32 * i, 96);
 		}
 */
-		if (IsKeyPressed (KEY_RIGHT)) { menu_show [menu_traits]    = menu_show [menu_traits]    ? 0 : 1; }
-		if (IsKeyPressed (KEY_LEFT))  { menu_show [menu_skills]    = menu_show [menu_skills]    ? 0 : 1; }
-		if (IsKeyPressed (KEY_DOWN))  { menu_show [menu_values]    = menu_show [menu_values]    ? 0 : 1; }
-		if (IsKeyPressed (KEY_UP))    { menu_show [menu_resources] = menu_show [menu_resources] ? 0 : 1; }
+		if (IsKeyPressed (KEY_RIGHT)) { camera_x++; limit (& camera_x, 0, CHAD_WORLD_WIDTH  * BASE_SIZE - render_width  ()); }
+		if (IsKeyPressed (KEY_LEFT))  { camera_x--; limit (& camera_x, 0, CHAD_WORLD_WIDTH  * BASE_SIZE - render_width  ()); }
+		if (IsKeyPressed (KEY_DOWN))  { camera_y++; limit (& camera_y, 0, CHAD_WORLD_HEIGHT * BASE_SIZE - render_height ()); }
+		if (IsKeyPressed (KEY_UP))    { camera_y--; limit (& camera_y, 0, CHAD_WORLD_HEIGHT * BASE_SIZE - render_height ()); }
+
+		if (IsKeyPressed (KEY_T)) { menu_show [menu_traits]    = menu_show [menu_traits]    ? 0 : 1; }
+		if (IsKeyPressed (KEY_S)) { menu_show [menu_skills]    = menu_show [menu_skills]    ? 0 : 1; }
+		if (IsKeyPressed (KEY_V)) { menu_show [menu_values]    = menu_show [menu_values]    ? 0 : 1; }
+		if (IsKeyPressed (KEY_R)) { menu_show [menu_resources] = menu_show [menu_resources] ? 0 : 1; }
 
 		view_hud (0, SIDE_SIZE, render_height (), render_width () - SIDE_SIZE, 0);
 		view_hud (1, render_width () - SIDE_SIZE, render_height (), 0, 0);
-
+debug ();
 		view_neon_menu (menu_resources, 1, 0, 0);
 
 		view_neon_menu (menu_traits, 1, 0, 0);