Merge branch 'feat/ex-query' into dev

c-krit · Nov 29, 2023 · 46816ca · 46816ca
2 parents 0bde9cb + 0a2f6bb
commit 46816ca
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diff --git a/examples/Makefile b/examples/Makefile
@@ -43,6 +43,7 @@ TARGETS ?= \
 	${SOURCE_PATH}/basic.out   \
 	${SOURCE_PATH}/cows.out    \
 	${SOURCE_PATH}/melon.out   \
+	${SOURCE_PATH}/query.out   \
 	${SOURCE_PATH}/raycast.out \
 	${SOURCE_PATH}/raylib.out
 

diff --git a/examples/Makefile.emcc b/examples/Makefile.emcc
@@ -35,6 +35,7 @@ TARGETS = \
 	${SOURCE_PATH}/basic.html   \
 	${SOURCE_PATH}/cows.html    \
 	${SOURCE_PATH}/melon.html   \
+	${SOURCE_PATH}/query.html   \
 	${SOURCE_PATH}/raycast.html \
 	${SOURCE_PATH}/raylib.html
 

diff --git a/examples/Makefile.mingw b/examples/Makefile.mingw
@@ -34,6 +34,7 @@ TARGETS = \
 	${SOURCE_PATH}/basic.exe   \
 	${SOURCE_PATH}/cows.exe    \
 	${SOURCE_PATH}/melon.exe   \
+	${SOURCE_PATH}/query.exe   \
 	${SOURCE_PATH}/raycast.exe \
 	${SOURCE_PATH}/raylib.exe
 

diff --git a/examples/src/query.c b/examples/src/query.c
@@ -0,0 +1,216 @@
+/*
+    Copyright (c) 2021-2023 Jaedeok Kim <[email protected]>
+
+    Permission is hereby granted, free of charge, to any person obtaining a 
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation 
+    the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+    and/or sell copies of the Software, and to permit persons to whom the 
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included 
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
+    DEALINGS IN THE SOFTWARE.
+*/
+
+/* Includes ================================================================ */
+
+#include "ferox.h"
+#include "raylib.h"
+
+#define FEROX_RAYLIB_IMPLEMENTATION
+#include "ferox-raylib.h"
+
+#ifdef PLATFORM_WEB
+    #include <emscripten/emscripten.h>
+#endif
+
+/* Macros ================================================================== */
+
+// clang-format off
+
+#define TARGET_FPS             60
+
+#define SCREEN_WIDTH           1280
+#define SCREEN_HEIGHT          800
+
+#define CURSOR_SIZE_IN_PIXELS  128.0f
+
+#define MAX_OBJECT_COUNT       256
+
+// clang-format on
+
+/* Constants =============================================================== */
+
+static const Rectangle SCREEN_BOUNDS = { .width = SCREEN_WIDTH,
+                                         .height = SCREEN_HEIGHT };
+
+static const float CELL_SIZE = 2.0f, DELTA_TIME = 1.0f / TARGET_FPS;
+
+/* Private Variables ======================================================= */
+
+static frSpatialHash *hash;
+
+static frBody *bodies[MAX_OBJECT_COUNT];
+
+static Color primaryColor, secondaryColor, greenColor;
+
+/* Private Function Prototypes ============================================= */
+
+static void InitExample(void);
+static void UpdateExample(void);
+static void DeinitExample(void);
+
+static void DrawCursor(void);
+static frAABB GetCursorBounds(void);
+
+static bool OnHashQuery(int index, void *ctx);
+
+/* Public Functions ======================================================== */
+
+int main(void) {
+    SetConfigFlags(FLAG_MSAA_4X_HINT);
+
+    InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "c-krit/ferox | query.c");
+
+    InitExample();
+
+#ifdef PLATFORM_WEB
+    emscripten_set_main_loop(UpdateExample, 0, 1);
+#else
+    SetTargetFPS(TARGET_FPS);
+
+    while (!WindowShouldClose())
+        UpdateExample();
+#endif
+
+    DeinitExample();
+
+    CloseWindow();
+
+    return 0;
+}
+
+/* Private Functions ======================================================= */
+
+static void InitExample(void) {
+    hash = frCreateSpatialHash(CELL_SIZE);
+
+    primaryColor = ColorAlpha(LIGHTGRAY, 0.35f);
+    secondaryColor = ColorAlpha(LIME, 0.85f);
+
+    for (int i = 0; i < MAX_OBJECT_COUNT; i++) {
+        frVector2 position = {
+            .x = GetRandomValue(0.02f * SCREEN_WIDTH, 0.98f * SCREEN_WIDTH),
+            .y = GetRandomValue(0.02f * SCREEN_HEIGHT, 0.98f * SCREEN_HEIGHT)
+        };
+
+        bodies[i] = frCreateBodyFromShape(
+            FR_BODY_STATIC,
+            frVector2PixelsToUnits(position),
+            frCreateRectangle(FR_API_STRUCT_ZERO(frMaterial),
+                              0.35f * GetRandomValue(1, 3),
+                              0.35f * GetRandomValue(1, 3)));
+
+        frSetBodyAngle(bodies[i], DEG2RAD * GetRandomValue(0, 360));
+    }
+
+    HideCursor();
+
+#ifdef PLATFORM_WEB
+    // TODO: https://github.com/emscripten-core/emscripten/issues/5446
+    emscripten_hide_mouse();
+#endif
+
+    SetMousePosition(0.5f * SCREEN_WIDTH, 0.5f * SCREEN_HEIGHT);
+}
+
+static void UpdateExample(void) {
+    {
+        frClearSpatialHash(hash);
+
+        for (int i = 0; i < MAX_OBJECT_COUNT; i++) {
+            frSetBodyUserData(bodies[i], (void *) &primaryColor);
+
+            frInsertToSpatialHash(hash, frGetBodyAABB(bodies[i]), i);
+        }
+
+        frQuerySpatialHash(hash, GetCursorBounds(), OnHashQuery, NULL);
+    }
+
+    {
+        BeginDrawing();
+
+        ClearBackground(FR_DRAW_COLOR_MATTEBLACK);
+
+        frDrawGrid(SCREEN_BOUNDS,
+                   CELL_SIZE,
+                   0.25f,
+                   ColorAlpha(DARKGRAY, 0.75f));
+
+        for (int i = 0; i < MAX_OBJECT_COUNT; i++) {
+            const Color *color = frGetBodyUserData(bodies[i]);
+
+            frDrawBodyLines(bodies[i], 2.0f, *color);
+        }
+
+        DrawCursor();
+
+        DrawFPS(8, 8);
+
+        EndDrawing();
+    }
+}
+
+static void DeinitExample(void) {
+    for (int i = 0; i < MAX_OBJECT_COUNT; i++)
+        frReleaseBody(bodies[i]);
+
+    frReleaseSpatialHash(hash);
+}
+
+static void DrawCursor(void) {
+    const Vector2 mousePosition = GetMousePosition();
+
+    Rectangle bounds = { .x = mousePosition.x - 0.5f * CURSOR_SIZE_IN_PIXELS,
+                         .y = mousePosition.y - 0.5f * CURSOR_SIZE_IN_PIXELS,
+                         .width = CURSOR_SIZE_IN_PIXELS,
+                         .height = CURSOR_SIZE_IN_PIXELS };
+
+    Color color = ColorAlpha(GREEN, 0.85f);
+
+    DrawLineEx((Vector2) { .x = mousePosition.x - 4.0f, .y = mousePosition.y },
+               (Vector2) { .x = mousePosition.x + 4.0f, .y = mousePosition.y },
+               2.0f,
+               color);
+
+    DrawLineEx((Vector2) { .x = mousePosition.x, .y = mousePosition.y - 4.0f },
+               (Vector2) { .x = mousePosition.x, .y = mousePosition.y + 4.0f },
+               2.0f,
+               color);
+
+    DrawRectangleLinesEx(bounds, 2.0f, color);
+}
+
+static frAABB GetCursorBounds(void) {
+    const Vector2 mousePosition = GetMousePosition();
+
+    return (frAABB) {
+        .x = frPixelsToUnits(mousePosition.x - 0.5f * CURSOR_SIZE_IN_PIXELS),
+        .y = frPixelsToUnits(mousePosition.y - 0.5f * CURSOR_SIZE_IN_PIXELS),
+        .width = frPixelsToUnits(CURSOR_SIZE_IN_PIXELS),
+        .height = frPixelsToUnits(CURSOR_SIZE_IN_PIXELS)
+    };
+}
+
+static bool OnHashQuery(int index, void *ctx) {
+    frSetBodyUserData(bodies[index], (void *) &secondaryColor);
+    return true;
+}