From 21a0d0c1c424f7db90c3282aad4bf6ad4ef809b7 Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 8 Jul 2023 14:37:29 -0700
Subject: Load tile maps and tile sets from files.
---
gfx-iso/app/checkerboard.c | 120 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)
create mode 100644 gfx-iso/app/checkerboard.c
(limited to 'gfx-iso/app/checkerboard.c')
diff --git a/gfx-iso/app/checkerboard.c b/gfx-iso/app/checkerboard.c
new file mode 100644
index 0000000..8b394c4
--- /dev/null
+++ b/gfx-iso/app/checkerboard.c
@@ -0,0 +1,120 @@
+#include "isogfx-demo.h"
+
+#include <gfx/gfx_app.h>
+#include <isogfx/isogfx.h>
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static const int TILE_WIDTH = 64;
+static const int TILE_HEIGHT = TILE_WIDTH / 2;
+static const int WORLD_WIDTH = 20;
+static const int WORLD_HEIGHT = 20;
+
+static const TileDesc tile_set[] = {
+ {.type = TileFromColour,
+ .width = TILE_WIDTH,
+ .height = TILE_HEIGHT,
+ .colour = (Pixel){.r = 0x38, .g = 0x3b, .b = 0x46, .a = 0xff}},
+ {.type = TileFromColour,
+ .width = TILE_WIDTH,
+ .height = TILE_HEIGHT,
+ .colour = (Pixel){.r = 0xA5, .g = 0xb3, .b = 0xc0, .a = 0xff}},
+ {.type = TileFromColour,
+ .width = TILE_WIDTH,
+ .height = TILE_HEIGHT,
+ .colour = (Pixel){.r = 0xdc, .g = 0x76, .b = 0x84, .a = 0xff}},
+};
+
+typedef enum Colour {
+ Black,
+ White,
+ Red,
+} Colour;
+
+typedef struct State {
+ Tile red;
+ int xpick;
+ int ypick;
+} State;
+
+static void make_checkerboard(IsoGfx* iso, Tile black, Tile white) {
+ assert(iso);
+ for (int y = 0; y < isogfx_world_height(iso); ++y) {
+ for (int x = 0; x < isogfx_world_width(iso); ++x) {
+ const int odd_col = x & 1;
+ const int odd_row = y & 1;
+ const Tile value = (odd_row ^ odd_col) == 0 ? black : white;
+ isogfx_set_tile(iso, x, y, value);
+ }
+ }
+}
+
+static void shutdown(IsoGfx* iso, void* app_state) {
+ assert(iso);
+ if (app_state) {
+ free(app_state);
+ }
+}
+
+static void update(IsoGfx* iso, void* app_state, double t, double dt) {
+ assert(iso);
+ assert(app_state);
+ State* state = (State*)(app_state);
+
+ double mouse_x, mouse_y;
+ gfx_app_get_mouse_position(&mouse_x, &mouse_y);
+
+ isogfx_pick_tile(iso, mouse_x, mouse_y, &state->xpick, &state->ypick);
+
+ printf("Picked tile: (%d, %d)\n", state->xpick, state->ypick);
+}
+
+static void render(IsoGfx* iso, void* app_state) {
+ assert(iso);
+ assert(app_state);
+ State* state = (State*)(app_state);
+
+ isogfx_render(iso);
+ if ((state->xpick != -1) && (state->ypick != -1)) {
+ isogfx_draw_tile(iso, state->xpick, state->ypick, state->red);
+ }
+}
+
+bool make_checkerboard_app(IsoGfx* iso, IsoGfxApp* app) {
+ assert(iso);
+ assert(app);
+
+ State* state = calloc(1, sizeof(State));
+ if (!state) {
+ return false;
+ }
+
+ if (!isogfx_make_world(
+ iso, &(WorldDesc){
+ .tile_width = TILE_WIDTH,
+ .tile_height = TILE_HEIGHT,
+ .world_width = WORLD_WIDTH,
+ .world_height = WORLD_HEIGHT})) {
+ goto cleanup;
+ }
+
+ const Tile black = isogfx_make_tile(iso, &tile_set[Black]);
+ const Tile white = isogfx_make_tile(iso, &tile_set[White]);
+ state->red = isogfx_make_tile(iso, &tile_set[Red]);
+ make_checkerboard(iso, black, white);
+ isogfx_render(iso);
+
+ app->state = state;
+ app->shutdown = shutdown;
+ app->update = update;
+ app->render = render;
+
+ return true;
+
+cleanup:
+ free(state);
+ return false;
+}
--
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