Merge remote-tracking branch 'origin'

Fixed typo in calculate camera
Removed some warning

code/core/impl/math.c

@@ -160,4 +160,46 @@ Mat4x4FInv M4x4F_CameraView(V3f x, V3f y, V3f z, V3f p) {
 	return result;
 }
 
+// Random
 
+Random Random_Seed(U64 seed) {
+	Random result = { seed };
+	return result;
+}
+
+U64 Random_Next(Random *rnd) {
+	U64 result = rnd->state;
+
+	result ^= (result << 13);
+	result ^= (result >>  7);
+	result ^= (result << 17);
+
+	rnd->state = result;
+
+	return result;
+}
+
+F32 Random_F32(Random *rnd, F32 min, F32 max) {
+	F32 result = min + (Random_Unilateral(rnd) * (max - min));
+	return result;
+}
+
+F64 Random_F64(Random *rnd, F64 min, F64 max) {
+	F64 result = min + (Random_Unilateral(rnd) * (max - min));
+	return result;
+}
+
+U32 Random_U32(Random *rnd, U32 min, U32 max) {
+	U32 result = min + (U32) (Random_Unilateral(rnd) * (max - min));
+	return result;
+}
+
+F32 Random_Unilateral(Random *rnd) {
+	F32 result = Random_Next(rnd) / (F32) U64_MAX;
+	return result;
+}
+
+F32 Random_Bilateral(Random *rnd) {
+	F32 result = -1.0f + (2.0f * Random_Unilateral(rnd));
+	return result;
+}

code/core/math.h

@@ -4,6 +4,13 @@
 #define PI_F32  (3.14159265358979323846264338f)
 #define TAU_F32 (2.0f * PI_F32)
 
+#define Abs(x) (((x) < 0 ? -(x) : (x)))
+
+typedef struct Random Random;
+struct Random {
+	U64 state;
+};
+
 typedef union V2f V2f;
 union V2f {
 	struct {
@@ -114,4 +121,18 @@ function V3f M4x4F_VMul3(Mat4x4F m, V3f v);
 function Mat4x4FInv M4x4F_Perspective(F32 fov, F32 aspect, F32 nearp, F32 farp);
 function Mat4x4FInv M4x4F_CameraView(V3f x, V3f y, V3f z, V3f p);
 
+// Random
+
+function Random Random_Seed(U64 seed);
+
+function U64 Random_Next(Random *rnd);
+
+function F32 Random_F32(Random *rnd, F32 min, F32 max);
+function F64 Random_F64(Random *rnd, F64 min, F64 max);
+
+function U32 Random_U32(Random *rnd, U32 min, U32 max);
+
+function F32 Random_Unilateral(Random *rnd);
+function F32 Random_Bilateral(Random *rnd);
+
 #endif  // LD_CORE_MATH_H_

code/draw/core.h

@@ -1,7 +1,7 @@
 #if !defined(LD_DRAW_CORE_H_)
 #define LD_DRAW_CORE_H_
 
-#define D_MAX_RECTS 1024
+#define D_MAX_RECTS (262144)
 
 typedef struct D_Image D_Image;
 struct D_Image {

code/first.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdbool.h>
 #include <SDL3/SDL.h>
+#include <SDL3/SDL_keycode.h>
 
 #define STB_IMAGE_IMPLEMENTATION 1
 #include <stb_image.h>
@@ -62,34 +63,46 @@ int main(int argc, char **argv)
 		camera->farp = 1000.0f;
 
 		game->draw.camera = camera;
+    game->camera.p.z = 200;
+		World *world = M_ArenaPush(arena, World);
+    game->world = world;
+    world->random = Random_Seed(29237489723847);
+    world->npcCount = 100;
+    for(int i = 0; i < 100; i++) {
+    NPC *npc1 = &world->npcs[i];
+      npc1->collision.pos.x = 15;
+      npc1->collision.pos.y = 15;
+      npc1->collision.size.x = 10;
+      npc1->collision.size.y = 10;
+      npc1->name = S("Matt");
+      npc1->mode = NPC_ACTION_WAITING;
+      npc1->waitTime = 0;
+      npc1->maxWaitTime = 5;
+      npc1->currentNavNode = 0;
+      npc1->collision.pos.x = 15;
+      npc1->collision.pos.y = 15;
+      npc1->collision.size.x = 10;
+      npc1->collision.size.y = 10;
+    }
+
+		NPC *npc2 = &world->npcs[1];
+		npc2->collision.pos.x = 15;
+		npc2->collision.pos.y = 15;
+		npc2->collision.size.x = 10;
+		npc2->collision.size.y = 10;
+		npc2->name = S("James");
+		npc2->mode = NPC_ACTION_WAITING;
+		npc2->waitTime = 0;
+		npc2->maxWaitTime = 10;
+		npc2->currentNavNode = 0;
+
+		world->navMesh = &TestNavMesh;
+		world->npcPOI[0] = 100;
+		world->player.pos.x = 0;
+		world->player.pos.y = 0;
 	}
 
-	Vk_Buffer rbo = {0};
-	rbo.usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
-	rbo.size = KB(4);
-	rbo.host_visible = true;
-
-	Vk_BufferCreate(&rbo);
-
 	bool running = true;
-	World world = {
-		.npcCount = 2,
-		.npcs = {
-			{.collision = {{10, 10}, {10, 10}},
-			 .name = S("Matt"),
-			 .mode = NPC_ACTION_WAITING,
-			 .waitTime = 0,
-			 .maxWaitTime = 5,
-			 .currentNavNode = 87},
-			{.collision = {{15, 15}, {10, 10}},
-			 .name = S("James"),
-			 .mode = NPC_ACTION_WAITING,
-			 .waitTime = 0,
-			 .maxWaitTime = 10,
-			 .currentNavNode = 0}},
-		.navMesh = &TestNavMesh,
-		.npcPOI = {100},
-		.player = {.pos = {0, 0}}};
 
 	printf("%zu size in bytes\n", sizeof(TestNavMesh));
 
@@ -102,9 +115,23 @@ int main(int argc, char **argv)
 			{
 				running = false;
 			}
-			ProcessEvents(&e, &world);
+      if (e.type == SDL_EVENT_KEY_DOWN) {
+        if(e.key.key == SDLK_DOWN) {
+          game->camera.p.y += 5;
+        }
+        if(e.key.key == SDLK_UP) {
+          game->camera.p.y -= 5;
+        }
+        if(e.key.key == SDLK_RIGHT) {
+          game->camera.p.x += 5;
+        }
+        if(e.key.key == SDLK_LEFT) {
+          game->camera.p.x -= 5;
+        }
+      }
+      ProcessEvents(&e, game->world);
 		}
-		UpdateWorld(1.0 / 60.0, &world);
+		UpdateWorld(1.0 / 60.0, game->world);
 
 		int w, h;
 		SDL_GetWindowSizeInPixels(window, &w, &h);
@@ -112,7 +139,7 @@ int main(int argc, char **argv)
 		game->draw.window_width = w;
 		game->draw.window_height = h;
 
-		G_CalulateCamera(&game->camera, (F32)w / (F32)h);
+		G_CalculateCamera(&game->camera, (F32)w / (F32)h);
 
 		Vk_Frame *frame = Vk_FrameBegin(window);
 		VkCommandBuffer cmd = frame->cmd;
@@ -142,6 +169,7 @@ int main(int argc, char **argv)
 
 		D_Begin(&game->draw, frame, D_MAX_RECTS);
 
+    RenderWorld(game->world, &game->draw);
 		D_Rect(&game->draw, 0.0f, 0.0f, .texture = 1);
 		D_Rect(&game->draw, -8.0f, 0.0f, .texture = 2, .scale = 2.0f);
 		D_Rect(&game->draw, 6.0f, 0.0f, .texture = 3);

code/game/core.c

@@ -290,7 +290,7 @@ void G_PipelinesLoad(G_State *game) {
 	Vk_PipelineCreate(basic);
 }
 
-void G_CalulateCamera(G_Camera *camera, F32 aspect) {
+void G_CalculateCamera(G_Camera *camera, F32 aspect) {
 	Mat4x4FInv proj = M4x4F_Perspective(camera->fov, aspect, camera->nearp, camera->farp);
 	Mat4x4FInv view = M4x4F_CameraView(camera->x, camera->y, camera->z, camera->p);
 

code/game/core.h

@@ -1,5 +1,6 @@
 #if !defined(LD_GAME_CORE_H_)
 #define LD_GAME_CORE_H_
+#include "world.h"
 
 typedef struct G_Camera G_Camera;
 struct G_Camera {
@@ -18,17 +19,18 @@ struct G_State {
 
 	D_Context draw;
 	G_Camera camera;
+
+  World *world;
 };
 
 function void G_ImagesLoad(G_State *game);
 function void G_PipelinesLoad(G_State *game);
 
-function void G_CalulateCamera(G_Camera *camera, F32 aspect);
+function void G_CalculateCamera(G_Camera *camera, F32 aspect);
 
 #include "aabb.h"
 #include "player.h"
 #include "nav.h"
 #include "npc.h"
-#include "world.h"
 
 #endif  // LD_GAME_CORE_H_

code/game/impl/aabb.c

@@ -23,14 +23,14 @@ bool AABB_Slab(V2f origin, V2f point, AABB a)
   // x
   F32 tLow = (start.x - origin.x) * invdirection.x;
   F32 tHigh = (finish.x - origin.x) * invdirection.x;
-  F32 tMin = min(tLow, tHigh);
-  F32 tMax = max(tLow, tHigh);
+  F32 tMin = Min(tLow, tHigh);
+  F32 tMax = Max(tLow, tHigh);
   // y
   tLow = (start.y - origin.y) * invdirection.y;
   tHigh = (finish.y - origin.y) * invdirection.y;
 
-  tMin = max(tMin, min(tLow, tHigh));
-  tMax = min(tMax, max(tLow, tHigh));
+  tMin = Max(tMin, Min(tLow, tHigh));
+  tMax = Min(tMax, Max(tLow, tHigh));
 
   return tMax >= tMin;
 }

code/game/impl/nav.c

@@ -9,7 +9,7 @@ typedef struct navSearchNodeState navSearchNodeState;
 struct navSearchNodeState
 {
   bool visited;
-  U64 distance;
+  F64 distance;
   U32 shortest;
   bool addedToUnvisited;
 };
@@ -61,8 +61,13 @@ U32 getLowestState(U32 unfinishedIndexes[128], U32 unfinishedCount, navSearchSta
 }
 
 // Generate a path to follow between the start and end node.
-NavPath Nav_Path(NavMesh *mesh, U32 start, U32 end)
-{
+NavPath Nav_Path(NavMesh *mesh, U32 start, U32 end) {
+  // This is a stupid fix, since it's easier to work backwards
+  // to generate a path, I'm swapping the start / end, to generate
+  // it backwards
+  U32 tmp = end;
+  end = start;
+  start = tmp;
   navSearchState state = initState(start, mesh->nodeCount);
   U32 unfinishedCount = 1;
   U32 unfinishedIndexes[NAV_MAX_NODES] = {start};
@@ -73,21 +78,15 @@ NavPath Nav_Path(NavMesh *mesh, U32 start, U32 end)
   U32 unfinishedOffset = 0;
   U32 lowestNodeIndex = start;
   bool found = false;
-  while (!found)
-  {
-    for (int connectionI = 0; connectionI < mesh->nodes[lowestNodeIndex].connectionCount; connectionI++)
-    {
-      NavConnection *connection = &mesh->nodes[lowestNodeIndex].connections[connectionI];
-      navSearchNodeState *testNode = &state.nodeStates[connection->NodeIndex];
-      if (testNode->visited)
-      {
-        continue;
-      }
-      U32 distance = cast(U32)(state.nodeStates[lowestNodeIndex].distance + connection->Cost);
-      distance += cast(U32)(mesh->nodes[end].pos.x - mesh->nodes[connection->NodeIndex].pos.x);
-      distance += cast(U32)(mesh->nodes[end].pos.y - mesh->nodes[connection->NodeIndex].pos.y);
-      if (testNode->distance > distance)
-      {
+  while(!found) {
+    for(int connectionI = 0 ; connectionI < mesh->nodes[lowestNodeIndex].connectionCount; connectionI++) {
+      NavConnection      *connection = &mesh->nodes[lowestNodeIndex].connections[connectionI];
+      navSearchNodeState *testNode   = &state.nodeStates[connection->NodeIndex];
+      if(testNode->visited) {continue;}
+      F64 distance = cast(F64) (state.nodeStates[lowestNodeIndex].distance + connection->Cost);
+      distance += cast(F64) Abs((mesh->nodes[end].pos.x - mesh->nodes[connection->NodeIndex].pos.x));
+      distance += cast(F64) Abs((mesh->nodes[end].pos.y - mesh->nodes[connection->NodeIndex].pos.y));
+      if(testNode->distance > distance) {
         testNode->distance = distance;
         testNode->shortest = lowestNodeIndex;
       }

code/game/impl/npc.c

@@ -1,6 +1,7 @@
 #include "game/npc.h"
 #include "game/world.h"
 #include "core/types.h"
+#include "core/math.h"
 
 #include <stdio.h>
 
@@ -10,9 +11,9 @@ void updateNPC(F32 delta, NPC *npc, World *world) {
       npc->waitTime+=delta;
       if(npc->waitTime > npc->maxWaitTime) {
         npc->mode = NPC_ACTION_WALKING;
-        U32 next = npc->targetNavNode == 100 ? 20 : 100;
-        npc->targetNavNode = next; // TODO RANDOM
-        printf("Starting to nav path\n");
+        // TODO change targets to poi's rather than just random nodes
+        npc->targetNavNode = Random_U32(&world->random, 0, world->navMesh->nodeCount);
+        printf("Starting to nav path from %d to %d\n", npc->currentNavNode, npc->targetNavNode);
         npc->path = Nav_Path(world->navMesh, npc->currentNavNode, npc->targetNavNode);
         printf("done\n");
         npc->walkTimer = 0;
@@ -26,16 +27,17 @@ void updateNPC(F32 delta, NPC *npc, World *world) {
         if(npc->path.nodeCount == npc->pathIndex+1){
           printf("Finished! so I'm waiting\n");
           npc->mode = NPC_ACTION_WAITING;
-          npc->maxWaitTime = 20; // TODO RANDOM
+          npc->maxWaitTime = Random_F32(&world->random, 10, 40);
           npc->waitTime = 0;
+          npc->currentNavNode = npc->targetNavNode;
           npc->pathIndex = 0;
           return;
         }
-        npc->pathIndex+=1;
         npc->currentNavNode = npc->path.indexes[npc->pathIndex];
+        npc->pathIndex+=1;
       }
       NavNode cNav = world->navMesh->nodes[npc->currentNavNode];
-      NavNode tNav = world->navMesh->nodes[npc->pathIndex];
+      NavNode tNav = world->navMesh->nodes[npc->path.indexes[npc->pathIndex]];
       npc->collision.pos.x = cNav.pos.x * (1 - npc->walkTimer/NPC_SPEED) + tNav.pos.x * npc->walkTimer/NPC_SPEED;
       npc->collision.pos.y = cNav.pos.y * (1 - npc->walkTimer/NPC_SPEED) + tNav.pos.y * npc->walkTimer/NPC_SPEED;
     break;

code/game/impl/world.c

@@ -5,12 +5,12 @@
 
 void UpdateWorld(F32 delta, World *world)
 {
-  // UpdateNPCs(delta, world);
+  UpdateNPCs(delta, world);
 }
 
 void UpdateNPCs(F32 delta, World *world)
 {
-  for (int i = 0; i < world->npcCount; i++)
+  for (U32 i = 0; i < world->npcCount; i++)
   {
     updateNPC(delta, &world->npcs[i], world);
   }
@@ -20,3 +20,9 @@ void ProcessEvents(SDL_Event *event, World *world)
 {
   PlayerUpdate(event, &world->player);
 }
+
+void RenderWorld(World *world, D_Context *draw) {
+  for(int i = 0; i < world->npcCount; i++) {
+    D_Rect(draw, world->npcs[i].collision.pos.x, world->npcs[i].collision.pos.y, .texture = 1); 
+  }
+}

code/game/npc.h

@@ -5,7 +5,7 @@
 #include "npc_look.h"
 #include "../core/types.h"
 
-#define NPC_SPEED 0.2f
+#define NPC_SPEED 1.0f
 
 typedef enum NPC_ACTION NPC_ACTION;
 enum NPC_ACTION {

code/game/world.h

@@ -4,6 +4,7 @@
 #include "player.h"
 #include "npc.h"
 #include "bandit.h"
+#include "../core/math.h"
 
 // Areas are which
 typedef U32 World_Area;
@@ -16,6 +17,7 @@ typedef struct World World;
 struct World {
   //// Static stuff
   NavMesh *navMesh;
+  Random random;
 
   //// Player
 	Player player;
@@ -33,6 +35,7 @@ struct World {
 };
 
 function void UpdateWorld(F32 delta, World *world);
+function void RenderWorld(World *world, D_Context *drawContext );
 function void ProcessEvents(SDL_Event *event, World *world);
 function void UpdateNPCs(F32 delta, World *world);
 function void updateNPC(F32 delta, NPC *npc, World *world);